a12 a pumpthe pump must be protected against excess pressure. it can be delivered with a internal...

126
A12 A pump INSTALLATION OPERATION MAINTENANCE INSTRUCTIONS 1012-B00 e Section 1012 Effective November 2013 Replaces September 2013 Original instructions Your distributor : Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17 [email protected] - www.mouvex.com

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Page 1: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

A12 A pump

INSTALLATION

OPERATION

MAINTENANCE

INSTRUCTIONS 1012-B00 e

Section 1012

Effective November 2013

Replaces September 2013

Original instructions

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

Page 2: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

2/35NT 1012-B00 11 13 Pump A12 A e

ECCENTRIC PISTON PUMPMOUVEX PRINCIPLE

SAFETY, STORAGE, INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL : A12 A

Definition of safety symbols

This is a SAFETY ALERT SYMBOL.

When you see this symbol on the product, or in the manual,

look for one of the following signal words and be alert to the

potential for personal injury, death or major property damage.

Warns of hazards that WILL cause serious personal injury,

death or major property damage.

Warns of hazards that CAN cause serious personal injury,death or major property damage.

Warns of hazards that CAN cause personal injury or propertydamage.

NOTICEIndicates special instructions which are very important andmust be followed.

DANGER

WARNING

CAUTION

TABLE OF CONTENTS Page

1. GENERAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.3 Identification and pump marking . . . . . . . . . . . . . . . . .4

2. GENERAL SAFETY INFORMATIONS . . . . . . . . . . . . . . . .53. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.1 Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.2 Installation design . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3 Installation and pump protection . . . . . . . . . . . . . . . . . .7

3.4 Hoisting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.5 Unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4. USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94.1 Noise level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.3 Operation without any pumped product . . . . . . . . . . .10

4.4 Shutting down the pump . . . . . . . . . . . . . . . . . . . . . . .10

5. OPENING OF THE PUMP . . . . . . . . . . . . . . . . . . . . . . . .115.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.2 Reverse of main rotation direction . . . . . . . . . . . . . . .12

5.3 Cylinder - piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5.4 Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.5 Mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

5.6 Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.7 Piston bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.8 Slide block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.9 Slide block shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.10 Slide block pads . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.11 Piston rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.12 Relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.13 O-rings replacement . . . . . . . . . . . . . . . . . . . . . . . . .25

5.14 Stirrup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276.1 Greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.2 Checking of parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

7. PARTICULAR VARIANTS . . . . . . . . . . . . . . . . . . . . . . . .287.1 Pump with heating jacket . . . . . . . . . . . . . . . . . . . . . .28

8. STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288.1 Short duration (≤ 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.2 Long duration (> 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.3 Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

9. SCRAPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

10. TECHNICAL CHARACTERISTICS . . . . . . . . . . . . . . . . .2910.1 Weight and center of gravity . . . . . . . . . . . . . . . . . .29

10.2 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.3 Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.4 Operation limits and characteristics . . . . . . . . . . . . .29

11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .3212. CERTIFICATE OF CONFORMITY . . . . . . . . . . . . . . . . .35

Unit without suffix :

Differential pressure, for example, pressure difference between

equipment suction and discharge.

Unit with suffix "a" :

Absolute pressure.

Unit with suffix "g" :

Gauge pressure, given regarding to atmospheric pressure

(~101325 Pa, taken at 1 bar / 14,5 psi in this IOM).

PumpPdisPsuc

Pompe

Pasp Pref Example :

Psuc = -0,2 barg = 0,8 bara

Pdis = 8,8 barg = 9,8 bara

∆P = Pdis - Psuc = 9 bar

USED PRESSURE UNITS

These Instructions contains important information concerning the reception, the installation, the operation, the adaptation, the

dismantling, the maintenance and the disposal of the A12A pump.

These Instructions MUST accompany the pump. Read these whole instructions before using the pump.

If necessary, do not remove the warning and use label stickers that are found on the pump.

The information given in this document are based on the most recent data available at the time of its diffusion. MOUVEX keeps

the right to modify without prior notice information and illustrations contained in this document.

Page 3: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.1 Principle of operationPumps MOUVEX A II Series are volumetric pumps with

eccentric piston (following the MOUVEX™ principle).

When piston moves inside cylinder, drvien by eccentruc

shaft, it creates four chambers that increase and des-

crease, thus creating suction and discharge.

These chambers are moving two by two with a 180°

opposition, thus giving to fluid crossing the pump a cons-

tant flow rate.

3/35NT 1012-B00 11 13 Pump A12 A e

1. GENERAL DATA

suction port

discharge port

Page 4: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.2 Codification

1.3 Identification and pump marking

A12A ST VT BCA MSTTVT C 10

ConceptionST StandardEV Jacket

SealsVT FKMCVT FEP encapsulated FKM

FlangesBCA Flanges compatibles with old A SeriePN16/20 Flanges compatibles PN16 and PN20

Mechanical sealMSTTVT Mouvex Seal tungsten carbide / tungsten

carbide / FKMMSCSVT Mouvex Seal carbone / stainless steel / FKMMSTTCVT Mouvex Seal tungsten carbide / tungsten

carbide / FEP FKMMSCSCVT Mouvex Seal carbon / stainless steel / FEP

FKMPGSN Provided for normalized single mechanical

seal

Internal relief valveC Single2C DoubleET Stirrup

Internal relief valve springS Without spring (stirrup)3 3 bar6 6 bar9 9 bar10 10 bar

Serial number

Short description

(ex : A12A-ST-ST-VT-BCA-MSTTVT-C-10-)Year

Additional information (ex : ATEX marking)

4/35NT 1012-B00 11 13 Pump A12 A e

1. GENERAL DATA (continued)

Page 5: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5/35NT 1012-B00 11 13 Pump A12 A e

2. GENERAL SAFETY INFORMATIONS

WARNING

DO NOT PERFORM STARTUP WHEN THE

PUMP IS NOT COMPLETELY RISE AND ITS

PROTECTIONS WERE NOT REPLACED.

Do not operate

without guard

in place.

WARNING

DO NOT MAKE GETTING STARTED IN THE

ABSENCE OF PROTECTION AGAINST

OVERPRESSURE.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

DURING THE INSTALLATION AND MAINTE-

NANCE PROCEDURES, ALL ELECTRICAL

WORK MUST BE PERFORMED BY QUALI-

FIED PERSONNEL.

Dangerous voltage.

Can cause

injury and death.

WARNING

DISCONNECT THE ELECTRICITY SUP-

PLY BEFORE ANY MAINTENANCE

OPERATION.

Dangerous voltage.

Can cause

injury and death.

WARNING

RELEASE PRESSURE FROM THE SYSTEM

BEFORE ANY WORK ON THE INSTALLA-

TION.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

STOP THE PUMP AND PREVENT RESTAR-

TING, EVEN ACCIDENTALLY, BEFORE ANY

WORK ON THE INSTALLATION.

Do not operate

without guard

in place.

WARNING

USE THE APPROPRIATE MEANS OF

HANDLING TO THE WEIGHT OF THE PARTS.

The weight ot the parts can

be dangerous and may

provoke bodily injuries or

material damages.

WARNING

IF PUMPING HAZARDOUS OR TOXIC

FLUIDS, THE PUMP MUST BE PURGED,

FLUSHED AND CLEANED UP PRIOR TO

PERFORMING ANY SERVICE OPERATION.

Hazardous or toxic

fluids can cause

serious injury.

CAUTION

EXTERNAL SURFACES OF THE PUMP

CAN BE AT A TEMPERATURE LIABLE TO

CAUSE INJURY OR SEVERE DAMAGE.

Extreme heat can

cause injury or

property damage.

CAUTION

CONTROL THE PARTS TEMPERATURE

BEFORE ANY WORK ON THE INSTALLATION.

Extreme heat can

cause injury or

property damage.

CAUTION

CLEAN ALL PUMPED LIQUID FLOWS OR

LUBRICANT THAT COULD CAUSE A FALL.

Slippery lubricant.

Spills should be

cleaned up.

Page 6: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.1 ReceptionMOUVEX is not responsible for any material damage

resulting from transportation or unpacking.

On receipt, visually inspect the packaging to ensure it is

not damaged. If necessary, indicate the appropriate

reservations on the transport and send a registered letter

to the carrier within 48 hours (if possible accompanied by

photos).

When unpacking, check that the pump and any other

materials are not damaged. If necessary, send a registered

letter to the carrier within 48 hours (if possible accompa-

nied by photos).

The pump must be supplied by the following documen-

tation :

• Delivery note,

• Pump Instructions,

• If necessary, complementary Instructions (ex : ATEX),

• If necessary, Instructions materials provided with the

pump (ex : motor, sensors…).

3.2 Installation design

3.2.1 Pump

To obtain the service expected from a MOUVEX pump,

regarding both performance and longevity, it is vital that

the type of pump, its speed and the materials used for its

construction are determined as a function of the pump

output, its installation and operating conditions.

You can contact our Technical Services at any time to

ask for the information you require.

3.2.2 Piping

Suction pipe length

Length should be as short as possible.

Suction pipe diameter

Diameter must be at least equal to pump port diameter

and even more if required by pumping conditions.

Suction pipe configuration

Check tightness to avoid accidental air intake.

--------------------------------------------------------------------

Not recommanded

To be avoided if possible

Recommanded

L = 10 x Dminimum

R = 3 x D minimum

6/35NT 1012-B00 11 13 Pump A12 A e

3. INSTALLATION

Page 7: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Pipe alignment and supporting

Pump must not support piping nor endure stress resul-

ting from piping weight or dilatation effects. For latters,

expansion loops should be included.

Pipe equipment

• Place valves close to the pump to avoid draining pipe

during maintenance operations. Preferably select full

bore ball or butterfly valves.

Pressure connections on pump suction and discharge

are recommended for settings an controls.

Protect pump by using a MOUVEX prefilter on suction.

Make sure piping, vessels valves and other installation

devices are carefully cleaned before mounting.

• MOUVEX pumps are self priming. However, if line

emptying should be avoided and/or if suction lift is high,

a foot valve can be added.

• If pumped liquid presents a risk of in pipe solidification

and potential dilatation, low points on the pipe should

be avoided or equipped with drain valve.

• If installation is heated, it must be designed so that fluid

dilatation can evacuate through piping. Therefore fluid

contained in piping must be heated before fluid contained

in the pump. Also check that a heated pump is not iso-

lated by closed valves.

3.3 Installation and pump protection

Do not startup the pump if there is no protection against

overpressure.

The pump must be protected against excess pressure. It

can be delivered with a internal relief valve or a pressure

switch to carry out this function.

If pump is used in both directions, the pump must be

protected in both directions of operation.

3.3.1 Protection by integrated relief valve

NOTICE

Pump internal relief valve cannot be used to protect

the installation.

3.3.1.1 Internal relief valve operation

The compensated internal relief valve operates like a

valve, by automatically limiting the discharge pressure at

the value for which it is adjusted.

When the discharge pressure reaches the adjusted

pressure of the spring, the valve opens, thus permitting

the partial or total return of the liquid to the inlet side of

the pump.

When the discharge is closed, the compensated internal

relief valve is designed to generate a very small increase

of pressure, relative to the setting pressure, which means

that the motor will economically supply the necessary

additional power for specific working conditions.

It should be noted that the role of the internal relief valve

is limited to protecting the pump against accidental over-

pressure.

It is vital to provide an appropriate overload protection for

the drive, unless the model used can handle the increased

load due to maximum overpressure (pump sending its flow

through the internal relief valve with the spring tightened

to the maximum).

The double internal relief valve assembly consists of two

single internal relief valves in opposition. This protects

the pump in both directions of rotation without the need

for mechanical intervention. Operation on each direction

is identical as above. The operation of each direction is

identical to the above. The setting of this internal relief

valve must be performed for both directions of operation.

WARNING

7/35NT 1012-B00 11 13 Pump A12 A e

3. INSTALLATION (continued)

Page 8: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.3.1.2 Internal relief valve orientation

Contrary to double internal relief valve designed for pro-

tect the pump in the two directions of rotation, the single

internal relief valve only protects the pump in one direc-

tion of operation. It is therefore imperative to check for

proper orientation before the first start of the installation

or after any modification in the pumping circuit or inter-

vention on the drive, by verifying that the cap 44827 is

located on the inlet side and reverse the mounting direc-

tion of the internal relief valve if necessary.

This control is not necessary in the case of a double

internal relief valve, protecting the pump in both directions

of operation.

To modify the mounting direction of the internal relief

valve, see § RELIEF VALVE.

3.4 Hoisting devicesUsing a lifting ring, fixed to the upper part of the pump,

to raise it.

• Pump with relief valve : threaded hole M10 on the

relief valve.

• Pump with stirrup : threaded hole M12 on the pump

main body.

Pump weight : see § OVERALL DIMENSIONS.

3.5 Unit assembly

3.5.1 Anchoring the pump units

The correct seating of the pump is vital for its efficient

operation and its longevity.

The surface must be resistant enough to absorb the

stresses due to the pump unit without deformation.

In the case where the unit is fastened by anchor lugs or

bolts, it must be carefully wedged to prevent any defor-

mation of the chassis when tightening the bolts.

Deformation of the chassis will cause stress prejudicial

to the pump and the drive device and put the coupling

out of true, thereby causing vibrations, noise and prema-

ture wear. Care must be taken so that the chassis is

clear of the ground, apart from the base plates.

The chassis is equipped with a ground connection that

must be used.

We recommend leaving an unoccupied space of about

50 cm, on either end of the chassis, to permit access to

the bolts fastening the pump, reduction gear and motor

together.

3.5.2 Coupling selection

NOTICE

Over 5 bar, the pump should be mounted with a double

coupling type.

3.5.3 Alignment of motor / pump and reduction

gearbox / pump shafts

Do not start the pump as long as it is not secured

and its protections not in place.

It is important to control the alignment of motor / pump

and reduction gearbox / pump shafts at every step of

installation in order to ensure that none of these steps

generates stress on the pump unit or the pump itself :

• after fastening on foundations,

• after fastening the piping,

• after the pump has operated at normal operating

temperature.

SuctionDischarge

WARNING

8/35NT 1012-B00 11 13 Pump A12 A e

3. INSTALLATION (continued)

Page 9: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

The 3 figures below show the operation clearly.

Refer to manufacturer’s instructions to determine the

acceptable values.

NOTICE

Do not rely on the flexible coupling to compensate

for misalignment.

3.5.4 Motorisation

The engine choices must be made in order to comply

with the conditions of the pump (speeds, absorbed

power).

The direction of rotation of the pump unit must be chec-

ked before the first startup and after any work on the

gear motor that may have affect its rotation direction. To

do this, follow the instructions in § COMMISSIONING -

DIRECTION OF ROTATION .

3.5.4.1 Electric motors

Refer to manufacturer’s instructions for the motor instal-

lation.

A particular attention should be given to the following

instructions :

• check that the supply voltage matches the indica-

tions on the motor rating plate,

• comply with the wiring diagram, make sure the

wires are rated for the power and take care with the

contacts which must be thoroughly tightened,

• the motors must be protected by appropriate circuit

breakers and fuses,

• connect the regulatory ground connections.

3.5.4.2 Diesel engine drive

Refer to manufacturer’s instructions for the motor instal-

lation.

Make this check for 4 points:up - down - left - right

Correct

Out-of-parallelism

Angular defect

9/35NT 1012-B00 11 13 Pump A12 A e

3. INSTALLATION (continued)

4.1 Noise levelThe sound level of a pump is greatly influenced by its

conditions of use. Cavitation and pumping products with

high gas contents generally increases the sound level.

Under the following pumping conditions :

• excluding cavitation

• suction pressure ......................... 0 barg

• differential pressure .................... 10 bar

• speed of rotation......................... 500 rpm

• pumped product viscosity........... 10 cSt.

The sound level reached for a A12A pump in good

conditions without the drive is less than 80 dB(A).

With no particular installation design being retained,

sound level has been measured at 1 m from pump sur-

face and 1.6 m. above ground. Maximum value measu-

red from discharge port was 78 dB(A).

4.2 Commissioning

4.2.1 Cleaning

The pumps are delivered well greased, it may be neces-

sary to clean them before putting them in use.

The cleaning can be done either by circulating a appro-

priate liquid, or by removing the pump front cover and

carefully cleaning the internal parts (see § OPENING OF

THE PUMP).

4.2.2 Direction of rotation

The MOUVEX pump is reversible; this allows it to always

circulate the liquid in the desired direction by choosing

the corresponding direction of rotation. In standard ver-

sion, the two directions of rotation do not allow achieving

the same hydraulic performance and a direction of rota-

tion should be privileged for normal operation.

To reverse the main rotation direction of the pump, see

§ REVERSE OF MAIN ROTATION DIRECTION .

For applications requiring the two directions of rotation

provide the same hydraulic performance, contact our

Technical Services.

4. USE

Page 10: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

10/35NT 1012-B00 11 13 Pump A12 A e

The suction and discharge sides are defined as follows :

when an observer faces the shaft, if rotation takes place

clockwise, the intake is on the left; on the contrary if the

rotation is anticlockwise, the intake is on the right.

The reverse of the direction of rotation should be done

after a full stop of the pump.

Controlling the direction of rotation of the motor :

This control must be done without pump product and

suction and discharge circuits vented to avoid genera-

ting unexpected pressure (at suction for example).

Start up vacuum to control the connections are good and

check the direction of rotation corresponds to the direc-

tion of inlet and outlet installation.

4.2.3 Starting-up

Before starting-up, make sure that the pumping condi-

tions are met. The circuit must be in one of its pumping

configurations with corresponding valves open and

especially the inlet valve.

NOTICE

With a product requiring heating, the product must be

brought to its pumping temperature before starting up

the pump.

See also the recommendations in § INSTALLATION

DESIGN - PIPING).

4.2.4 Surface temperature

Depending on the operating conditions (temperature of

the pumped liquid, differential pressure ...), the use of

the pump can generate high surface temperatures.

When these temperatures exceed 80°C, protective mea-

sures must be implemented, like :

• reduction of contact with heated surfaces ;

• warning to operators.

These measures must be taken from 68°C in case of

reduced space around pump, possibly leading to a longer

contact with pump surface.

4.3 Operation without any pumped productPumps using the MOUVEX principle can be run dry,

without any pumped product in the pump (for example

during the priming) for a period of five minutes, without

causing damage.

Additional restrictions may apply to certain applications.

If necessary, refer to additional instructions supplied with

the pump (ex : ATEX additional instructions).

4.4 Shutting down the pumpWhen shutting down the pump, we recommend waiting

for the pump to stop completely before closing the val-

ves, especially the inlet valve.

If the pump circuit is to be located between valves and/or

a non-return valve, you need to take account of the

variations in temperature that can lead to contraction of

the liquid in the circuit. In this case, you need to provide

some means of compensating for the contraction (see §

INSTALLATION DESIGN - PIPING for examples of possible

measures). The opening pressure for this valve should

be compatible with the permitted pressure for the other

components in the circuit.

In the case of liquids containing particles settling on

shut-down, it is necessary to make sure the consistency

of the deposit will not impede restarting the pump.

CAUTION

4. UTILISATION (continued)

Page 11: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1 Preparation

5.1.1 Necessary tools

Reverseof

mainrotatio

ndirection

Cylinde

rpiston

Bushings

Mecha

nicalseal

Bearing

Piston

bearing

Slideblock

Slideblockshaft

Slideblockpa

ds

Piston

rear

seat

Shaft

Internalreliefvalve

Stirrup

13 mm Open end and socket wrenches x x x x x x x x x x x

16 mm Open end and socket wrenches x

17 mm Open end and socket wrenches x x x x

18 mm Open end and socket wrenches x x

19 mm Open end and socket wrenches x x x x x x x x x x x x x

Adjustable open end wrench 44 mm x

Allen wrench size 2,5 x

Allen wrench size 6 x x x x x

Allen wrench size 10 x

Flat screwdriver x x x

Mallet x

Bearing puller (bore Ø 28 mm depth 50 mm) x

Pin punch Ø 2,5 mm x

Pin punch Ø 3 mm x

Pin punch Ø 5 mm x x x x x x x x

Block (see § CYLINDER PISTON) x x x x x x x x

Cylinder Ø 58 x

Tube outside Ø 61 x

Press x x

Medium thread lock type Loctite® 243* or equivalent. x x x x x x x x x x xTightness product for flat surfaces :

applications on solvents :GEB oil® or equivalent ;

other applications :Loctite® 574* or equivalent

x

Fixing product type Loctite® 640* or equivalent x

Flat file x

Sand paper (n°320) x x

Stud remover M8 x

Stud remover M10 x x

Bearing grease (see § MAINTENANCE) x x x x

For setting or control operationFor spare parts replacement operation

11/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP

* Loctite® est une marque déposée.

Page 12: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1.2 Assembly torques

M8 .......................... 11±5.5 N.m

M10 (studs) ............. 35±8 N.m

M10 (others) ............ 20±6 N.m

G1/4 ....................... 3,5±1 N.m

G1/2 conical ........... 6±2 N.m

5.1.3 Pump preparation

Before any intervention on the pump :

If pumping hazardous or toxic fluids, the pump must

be purged, flushed and cleaned up prior to perfor-

ming any service operation.

Stop the pump and prevent restarting, even acciden-

tally, before any work on the installation.

Disconnect the installation.

Relieve the system pressure.

Control the parts temperature.

Drain the pump.

Make sure the isolation valves, if any, are closed before

pulling out the drain plug 12434 and its seal 12412.

Remove the seal 12412 and check its condition. Replace

it if necessary.

Once the pump is drained, fit the plug 12434 and its seal

12412.

5.2 Reverse of main rotation directionDisconnect the pump from the engine and remove the

coupling.

• Coupling supplied by MOUVEX

Remove the locking screw, then remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Remove the screws 12706 and theirs washers 12721.

Without remove the parts from the main body, rotate

bearing cover 12705 – bearing cage 12701 subassembly

to obtain the desired position (drain holes must remain

in vertical position ; do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

WARNING

Drain hole

12/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 13: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If bearing cage 12701 remain stucked to the main body

12101, apply the following procedure :

• Remove the key 12508.

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 into the threaded holes of

the bearing cage 12701. Keep tightening screws 12706,

with balanced tightening between the two screws until

parts separate.

• If necessary, clean the bearing 12703 and fill it with

grease.

• Refit the bearing cover with its screw 12706A.

Positions détail

5.2.1 Pump with single relief valve

Reverse internal relief valve position as follow.

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Position the seals 44858 in their grooves.

Turn the internal relief valve through 180° (the internal

relief valve cap 44827 must be oriented suction side).

Take care not to pinch the seal 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic was-

hers 44859A. Tighten the screws making sure tightening

is balanced between the two screws.

Main clockwise direction of rotation

Main anticlockwise direction of rotation

SuctionDischarge

13/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 14: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.2.2 Pump with double relief valve

Check that pressure settings correspond to requirements

for each direction of rotation.

If necessary, proceed to settings (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

5.3 Cylinder - piston

5.3.1 Dismantling

Dismantling of front cover

Remove the front cover bolts (screw 12409, nuts

12409A and washers 12409E - 12409F).

Remove the front cover set (12401-12403-12414-

12415-12416-12417-12420-12310-12311) by progressi-

vely separating it from the pump body. If necessary, use

the threaded holes on the front cover by screwing pro-

gressively two screws 12409.

Remove the seal 12403 and check its condition.

Replace it if necessary.

Check the front cover bushing 12415 condition. Replace

it if necessary.

Dismantling of piston

Remove the pin 12524.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Remove the sleeve 12521.

Remove the piston 12301O by softly pulling on slide block

12312. If necessary, use a screwdriver as a lever to pull

it away from cylinder 12201 (be careful not to damage

friction faces).

Check piston 12301O condition. Replace it if necessary.

Check piston bushing 12303 condition. Replace it if neces-

sary.

126

14/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 15: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of cylinder

Remove the nuts 12206-12115 and theirs washers

12207-12116.

Separate the cylinder 12201 from the main body 12101

with a mallet and remove the seal 12104 and check its

condition. Replace it if necessary.

Check the cylinder 12201 condition. Replace it if necessary.

CAUTION

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

5.3.2 Reassembly

Assembly of cylinder

Clean the seal housing 12104.

Fit the seal 12104 in the main body 12101.

Applying a sealing product between the main body 12101

faces and the cylinder 12201 (see § PREPARATION).

Fit the nuts 12206 and 12215 with theirs new ridged

conic washers 12207 and 12116.

Take care not to pinch the seal 12104 during the assembly.

Assembly of piston

Lubricate the friction surfaces of the piston 12301O with

a product compatible with the pumped liquid.

Fit the piston 12301O on its piston bearing 12503.

Fit he sleeve 12521 on the shaft 12501.

Fit the pin 12524 (until it cannot move any forward) taking

care not to damage the sleeve.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Sealing product application zone

126

15/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 16: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of front cover

Clean the seal housing 12403.

Fit the seal 12403 on the cylinder 12201.

Orientate the slide block 12312 to make it pass between

the pads 12404.

Fit the front cover 12401 on the cylinder 12403.

Take care not to pinch the seal 12403 during the assembly.

Take care not to damage the bushing 12415 during the

assembly.

Fit the screws 12409 and nuts 12409A with theirs new

ridged conic washers 12409E and 12409F.

5.4 Bushings

5.4.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Piston bushing

Remove the bushing 12303 of the piston 12301O with a

press and a cylinder.

Front cover bushing

Remove the screws 12417 and theirs washers 12420.

Remove the set front cover bearing - bushing (referen-

ces 12414 - 12415 - 12416) from the front cover 12401.

Remove the seal 12416 and check its condition.

Replace it if necessary.

Remove the bushing 12415 of front cover bearing 12414

with a puller.

16/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 17: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.4.2 Reassembly

Piston bushing

Insert the bushing 12303 in the piston 12301O with a

press and a cylinder until the faces of the bushing and

the piston are aligned (on both sides).

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Front cover bushing

Orientate bushing chamfer on the outer side (see sche-

me above).

Insert the bushing 12415 in the front cover bearing

12414 using a press and a cylinder until bushing 12415

and front cover bearing 12414 faces are aligned.

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Clean the O-ring housing 12416.

Fit the O-ring 12416 on the front cover bearing 12414.

Fit the screws 12417 and theirs new ridged conic was-

hers 12420 with medium thread lock.

Follow the instructions in § CYLINDER-PISTON to finish the

reassembly.

5.5 Mechanical seal

5.5.1 Type

The A12A pumps can be equipped with :

• standardized mechanical seals Ø 30 (short types

standardized mechanical seals - K - according to

EN 12756),

• MOUVEX mechanical seals Ø 30.

5.5.2 Operation

The shaft drive the one piece rotating part in a rotary

motion.

The stationary seal face is fixed on the pump body.

Sealing is done :

• Static, by the O-rings located between the rotating

part and the shaft and between the stationary seal

face and the pump body.

• Dynamic, by the contact surfaces between the rota-

ting part and the stationary seal face.

Sealing is therefore done as a function of the condition

of these contact surfaces and the seals.

5.5.3 Dismantling

Preparation

Disconnect the pump from drive and remove the coupling

and the key 12508.

• Coupling supplied by MOUVEX

Remove the locking screw, remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Follow the instructions in § CYLINDER - PISTON.

17/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 18: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of bearing cover

Note the position of the screw 12706A (right or left).

Remove the screws 12706 and theirs washers 12721.

Remove from the main body 12101 the set shaft - bearing

cover - bearing cage - seal - bearing - mechanical seal -

piston bearing (references 12501 - 12503 - 12504 -

12511 - 12600 - 12627 - (12641 - 12642) - 12701 -

12703 - 12704 - 12705 - 12706A - 12707 - 12708 -

12717 - 12733).

Remove the screw 12706A.

Refit the bearing cover 12705, taking care not to dama-

ge the lip seal 12707 on the key housing edges.

Check the lip seal 12707 condition. Replace it if neces-

sary.

If bearing cage 12701 would remain stucked on main

body 12101, follow the following procedure :

• Note the position of the screw 12706A (right or left).

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 in the bearing cage

12701 threaded holes. Keep tightening the screws

12706, with balanced tightening between the two

screws until parts separate.

NOTICE

Once bearing cover 12705 is removed, shaft is hold

only be bearing and may fall which could damage

the mechanical seal. To prevent this, keep holding

shaft 12501 and bearing cage 12701 to limit ball joint

movement, for instance by putting it vertically).

NOTICE

Once bearing cover 12705 is removed, the bearing is

no longer protected against impurities. To prevent

any pollution of bearing grease, cover bearing with

a protection sheet.

Dismantling of the bearing cage

Remove the seal 12717 and check its condition.

Replace it if necessary.

Remove the ring 12704.

Remove the shaft 12501 from the set bearing cage -

bearing (references 12701 - 12703 - 12733 - 12627 and

stationary seal face mechanical seal), taking care not to

damage the Nilos seal 12733.

Dismantling of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Dismantling of the mechanical seal rotating part

Remove the rotating part 12697 (mechanical seal driver

12641 and its screws 12642 can be left in place) from

shaft 12501 taking care not to scratch it.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

18/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 19: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

• Dismantling of the mechanical seal stationary seal

face

Remove the stationary seal face 12604 and its seal

12605.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Dismantling of mechanical seal (other)

Refer to manufacturer’s instructions.

5.5.4 Reassembly

Reassembly of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Assembly of mechanical seal stationary seal face

If necessary, clean the bearing 12703 of its grease.

Clean the seal housing in the bearing cage 12701.

Fit the seal 12605 in the bearing cage 12701.

Fit the stationary seal face 12604 in the bearing cage

12701, taking care of aligning pin 12627 located in

the bearing cage 12701 with groove on the stationary

seal face 12604.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

• Assembly of mechanical seal rotating part

Check shaft 12501 surface condition. Rub it down with

thin sand paper if there are scratches on seal rotating

part O-ring place. In particular, it must be check that

there are no scratches parallel to shaft axle.

If necessary, fit the mechanical seal driver 12641 and

its screws 12642 on the shaft 12501, and position it

so that it cannot move any forward. Fit the screws

12642 with medium thread lock.

To reduce friction, wet with water or alcohol surfaces

on which O-rings will slip during assembly.

If seal includes FEP coated FKM O-rings, use moun-

ting cone supplied with mechanical seal.

Fit the rotating part 12697 aligning ergots driver 12641

grooves.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Reassembly of mechanical seal (other)

Refer to manufacturer’s instructions.

Fit the mechanical seal rotating part on the shaft 12501

and position it so that it cannot move any forward.

NOTICE

If seal presents a large inlet chamfer, position seal

manually so that its end correspond to the stop.

19/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 20: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of the bearing cage

Fit the set bearing cage (12701 - 12703 - 12733 - 12627

and mechanical seal stationary seal face) on the shaft

12501.

NOTICE

As long as bearing cover 12705 is not mounted,

shaft is hold only be bearing and may fall which

could damage the mechanical seal. To prevent this,

keep holding shaft 12501 and bearing cage 12701 to

limit ball joint movement, for instance by putting it

vertically.

Fit the ring 12704 on the shaft 12501.

If necessary, fill the bearing 12703 with grease (see §

MAINTENANCE).

Clean the seal housing 12717.

Fit the seal 12717 on the bearing cage 12701.

Assembly of bearing cover

If necessary, fit the lip seal 12707, lip orientated outside

in the bearing cover 12705.

Fit the bearing cover 12705 in the bearing cage 12701.

Fit the screw 12706A.

Insert shaft assembly in the main body 12101 taking care

to :

• position the screw 12706A on same side as before

dismantling. When changing the direction of rotation of

the pump, see § REVERSE OF MAIN ROTATION DIRECTION ;

• position bearing cage 12701 drain holes in vertical

position (do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

If necessary, grease the bearing (see § GREASING).

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

5.6 Bearing

5.6.1 Dismantling

Follow the instructions in § MECHANICAL SEAL.

After removing the bearing cage 12701, remove the

bearing 12703 of the cage 12701 with a press.

5.6.2 Reassembly

Clean the bearing housing 12705.

Fit the Nilos seal 12733 in its housing.

Fit the bearing 12705 in the bearing cage 12701 by pres-

sing on its outer ring with a press and a tube.

Follow the instructions in § MECHANICAL SEAL to finish the

reassembly.

Drain hole

20/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 21: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.7 Piston bearing

5.7.1 Dismantling

Follow the instructions in § MECHANICAL SEAL to remove the

set shaft - bearing cover - bearing cage - seal - bearing

- mechanical seal - piston bearing (references 12501 -

12503 - 12504 - 12511 - 12600 - 12627 - (12641 -

12642) - 12701 - 12703 - 12704 - 12705 - 12707 - 12708 -

12717 - 12733).

Remove the screws 12511.

Remove the springs 12504 and check their condition.

Replace them if necessary.

Remove piston bearing 12503.

5.7.2 Reassembly

Fit piston bearing 12503.

Fit the springs 12504 in theirs housings.

Fit the screws 12511.

5.8 Slide block

5.8.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nut 12309 and its washer 12308.

Remove the slide block 12312 and its bushing 12306

and check their condition. Replace them if necessary.

5.8.2 Reassembly

Fit the slide block bushing 12306 and the slide block

12312.

Fit the nut 12309 and its washer 12308.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

21/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 22: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.9 Slide block shaft

5.9.1 Dismantling

Follow the instructions in § SLIDE BLOCK.

Heat the slide block shaft 12304 to destroy fixing product

taking care not to twist the piston.

Remove the slide block shaft 12304.

Check parts temperature before dismantling.

5.9.2 Reassembly

Clean threading in piston 12301.

Fit the slide block shaft 12304 until it cannot move any

forward with fixing product. Groove must be on piston side.

Adjust slide block shaft 12304 to piston 12301 face by

filing section raising above piston face. Do surface finish

with thin sandpaper. Piston face must not show scratches.

Follow the instructions in § SLIDE BLOCK to finish the reas-

sembly.

5.10 Slide block pads

5.10.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nuts 12408 and theirs seals 12407. Check

seals condition and replace them if necessary.

Remove the slide block pads 12404 with theirs studs

12405 and theirs seals 12406. Check parts condition and

replace them if necessary.

5.10.2 Reassembly

Fit the studs 12405 in the slide block pads 12404.

Fit the seals 12406 on the studs 12405 taking care not

to damage the seals 12406 on studs 12405 threading.

Fit the slide block pads sets (references 12404 - 12405

- 12406) in the front cover 12401.

Fit the nuts 12408 with theirs seals 12407.

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

Pump with heating jacket :

Remove the plugs 12462 to reach the nuts 12405.

WARNING

22/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 23: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.11 Piston rear seat

5.11.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the piston rear seat 12311 by rotating it to release

pins 12314 from their grooves.

Remove the spring 12310. Check its condition and replace

it if necessary.

Caution: Spring is always slightly pressed.

5.11.2 Reassembly

Position the spring 12310 in the front cover 12401.

Fit the piston rear seat in the front cover 12401 by rotating

it to engage pins 12314 in their grooves.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

5.12 Relief valve

5.12.1 Opening pressure setting

Before any modification on setting, check :

• That there is a pressure measurement mean on

pump discharge ;

• Maximum allowable pressure for discharge installa-

tion. This pression corresponds to the lowest maxi-

mum allowable pressure among all discharge

installation components.

During setting operation, operator must make sure

never exceeding discharge installation maximum

pressure.

Loosen the nut 44835.

Turn the adjusting nut 44834 clockwise to increase dis-

charge pressure, anticlockwise to reduce it.

Once setting is done, tighten counternut 44835.

Setting is correct when flow rate is conform to expecta-

tion and when motor endures without incident absorbed

power peak when discharge is closed. This is how relief

valves of complete pumping sets are set, basing on

information given to our technical services.

Pumps supplied bare shaft are delivered with a standard

setting that should be adjusted depending on exact

installation and operation conditions, following procedure

above.

WARNING

WARNING

23/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 24: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.12.2 Spring replacement

5.12.2.1 Dismantling

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Remove relief valve and put it on a workbench or a flat

and clean surface.

Set relief valve opening pressure to its minimum (see §

RELIEF VALVE - OPENING PRESSURE SETTING).

Keep relief valve vertical for the rest of the operation.

Progressively untight screws 44856.

Caution: Spring is always slightly compressed.

Remove the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Remove the seal 44807 and check its condition.

Replace it if necessary.

Remove spring 44824 from relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

5.12.2.2 Reassembly

Keep relief valve vertical during operation.

Introduce spring 44824 in the relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

Check position of valve 44823. It must rest flat on its seat

and move freely in its housing.

Position the seal 44807.

Put back the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Tighten screws 44856 keeping tightening balanced bet-

ween the screws.

NOTICE

It is necessary to press the spring before being able

to tighten.

Position the seals 44858 in their grooves.

Put back the relief valve on the pump respection correct

orientation (the internal relief valve cap 44827 must be

on suction side).

Take care not to pinch the seals 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic washers

44859A. Tighten the screws keeping tightening balanced

between the screws to keep relief valve in correct position.

Set spring pressure at required value (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

WARNING

24/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 25: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.13 O-rings replacement

5.13.1 Dismantling

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT.

Dismantle the adjusting screw set as follows.

Remove the pin 44831.

Remove the nut 44834 and its nut 44835.

Remove the adjusting screw 44826 and its subassembly

(references : 44825 - 44826A - 44837).

Remove the seal 44837 and check its condition.

Replace it if necessary.

Remove the plug 44857.

Remove the seal 44850 and check its condition.

Replace it if necessary.

5.13.2 Reassembly

Position the seal 44850.

Refit the plug 44857.

Fit the spring guide 44825 on the adjusting screw

44826.

Position the washer 44826A and the seal 44837 on the

adjusting screw 44826.

Fit the set in the cap 44827.

Fit the nut 44835 and the nut 44834.

Fit the pin 44831 in the adjusting screw 44826.

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT to finish the reassembly.

25/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 26: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.14 Stirrup

5.14.1 Dismantling

Remove the screw 44859 and its washer 44859A.

Remove stirrup 44867.

Remove the stirrup plugs 44865.

Remove the seals 44858 and check their condition.

Replace them if necessary.

5.14.2 Reassembly

Position the seals 44858 in their grooves.

Refit the stirrup plugs 44865 on the pump.

Take care not to pinch the seals 44858 during the assem-

bly.

Position stirrup 44867.

Fit the screw 44859 with its washer 44859A.

26/35NT 1012-B00 11 13 Pump A12 A e

5. OPENING OF THE PUMP (continued)

Page 27: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

6.1 GreasingExcept for special cases, the MOUVEX pump only requi-

res lubrication of the shaft inlet bearing.

Use a grease for ball bearings.

Lubrication must be done every 1,000 hours of operation

or at least once a year. or in case of accidental soiling of

the grease.

In this case, clean the bearing and its housing before

replacing the grease.

The quantity of grease to be added must not exceed 17 cm3.

For pumps operating at high temperatures (in principle

from 100°C upwards) use a grease with a high drop point.

Preference should be given to lubricants insoluble in the

product pumped and, in the case of hot products, lubri-

cants that maintain good viscosity at the operating tem-

perature.

The other elements of the pump unit (motor, reduction

gear) should be maintained in conformity with their spe-

cific technical instructions.

6.2 Checking of partsDefects listed below require the replacement of parts.

6.2.1 Bushings (12303 - 12415)

Ø interior higher than :

- piston bushing 12303 ...............44,25 mm

- front cover bushing 12415 .......28,90 mm

6.2.2 Cylinder and piston (12201 - 12301)

thickness rating less than :

- piston 12301............................. 8,0 mm

- cylinder 12201..........................57,3 mm

NOTICE

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

6.2.3 Slide block (12312)

- rating on flat less than 27,87 mm

- inside Ø higher than Ø 16,04 mm

6.2.4 Slide block bushing (12306)

- outside Ø less than 15,90 mm

6.2.5 Slide block pads (12404)

- thickness rating less than 9,45 mm

6.2.6 Piston bearing (12503)

- outside Ø less than 42,75 mm

6.2.7 Sleeve (12521)

- outside Ø less than 27,80 mm

6.2.8 Shaft (12501)

- Ø under the lip seal surface less than 24,85 mm

- Ø under the mechanical seal O-ring surface less than

29,90 mm

6.2.9 Springs (12310 – 12504 – 12703A)

- non-rectilinear spring axis

- spring 12310 : free height less than 31 mm

- spring 12504 : free height less than 16,60 mm

6.2.10 Seals

- scratch

- break

- holes

- permanent deformation of the seal

6.2.11 Bearing (12703)

- Life time exceeded (lifetime : 20 000 hours)

- Feel able hard point during manual bearing rotation

- Unusual noise during pump operation (squeaking…)

NOTICE

The lifetime for the bearing is a theoretical lifetime

calculated according to the standard ISO 281 recom-

mendations.

This calculation was performed with the values of

speed and acceptable maximal differential pressure

and for a acceptable failure rate of 10%.

27/35NT 1012-B00 11 13 Pump A12 A e

6. MAINTENANCE

Page 28: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If necessary, refer to § OPENING OF THE PUMP for pump disas-

sembly.

7.1 Pump with heating jacketThe jacketed front cover 12401 permits the circulation of

steam or liquid.

The plug 12462 permits the draining of the heating jacket.

To connect the heating jacket, see § OVERALL DIMENSIONS.

28/35NT 1012-B00 11 13 Pump A12 A e

7. PARTICULAR VARIANTS

If necessary, refer to § OPENING OF THE PUMP for pump

disassembly.

8.1 Short duration (≤ 1 month)MOUVEX pumps and motor-driven pumps are well lubri-

cated when delivered to protect the internal parts during

brief storage in a building where :

• the temperature remains between 10°C and 50°C.

• the relative humidity does not exceed 60%.

• exposure to vibration is limited.

• pump is stored in an area sheltered from bad weather

and sun.

NOTICE

In the case of pumps ordered without testing characte-

ristics, it is necessary to grease the inside of the pump

before any storage.

8.2 Long duration (> 1 month)The recommendations from the manufacturer should be

followed if the pump is stored with its gear motor.

Pump ports should be filled with a non-corrosive liquid

that it compatible with the pump components in order to

prevent corrosion.

Unpainted external surfaces of the pump (e.g. shafts,

couplings, etc.) should be covered in some form of anti-

corrosion protection.

The bearing should be well greased. If the pump is to be

stored for more than the life of the grease, this one

should be replaced in time to prevent an excessive

degradation of its qualities.

The best storage conditions are inside a building that

meets the conditions set out above.

If inside storage is not possible, the materials should be

covered to prevent direct exposure to sun and bad wea-

ther. This protection should also prevent condensation.

Rotate pump shaft manually a few revolutions every two

months.

8.3 RestartingFollow the standard start-up procedure for the pump/

motor-driven pump, as well as the instructions below.

Turn the pump by hand to make sure the parts move

freely.

Replace the grease used to lubricate the bearing.

If the pump has a safety relief valve, remove it and

inspect the parts and make sure they move freely (see §

RELIEF VALVE for removal instructions).

8. STORAGE

The pump must be scrapped in compliance with the regula-

tions in force.

During this operation, particular care must be paid to the drai-

nage stages of the pump (pumped product).

9. SCRAPPING

Page 29: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

29/35NT 1012-B00 11 13 Pump A12 A e

10.1 Weight and center of gravity

10.1.1 Weight

From 40 to 50 kg depending on variants.

10.1.2 Center of gravity

NOTICE

The position of the center of gravity may vary slightly

depending on the chosen options (relief valve, stirrup,

front cover with heating jacket...) and the position of

the moving parts inside the pump.

10.2 Overall dimensionsSee following pages.

10.3 CurvesConsult our Technical Services.

10.4 Operation limits and characteristicsAcceptable maximum suction pressure.................. 9 barga

Acceptable maximal differential pressure...............10 bar

Acceptable maximum discharge pressure..............12 barg

Acceptable maximum pressure in heating jacket ... 8 barg

Acceptable maximum speed ..................................500 rpm

Acceptable minimum temperature..........................-15°C

Acceptable maximum temperature ........................80°Cb

Acceptable maximum temperature

in heating jacket......................................................80°Cb

Maximum flowratec .................................................12 m3.h-1

Cylinder capacity ....................................................0,402 L

10. TECHNICAL CHARACTERISTICS

a NOTICE : In the case of a pressure suction higher than the atmospheric

pressure, provide a valve to prevent the flow of liquid when the pump is

stopped.

b Consult our Technical Services for higher temperatures.

c This value can vary depending on your application parameters. You can

contact our Technical Services at any time to ask for the information you

require.

Page 30: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

30/35NT 1012-B00 11 13 Pump A12 A e

Overall dimensions

10. CARACTÉRISTIQUES TECHNIQUES (suite)

ER

elie

f valv

e s

ettin

g.

PP

um

p p

late

.

P1

Pum

p r

ota

tion d

ire

ction p

late

.

RM

ain

rota

tion d

irection index.

Sp

Mounting p

oin

t fo

r pum

p p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

Sr

Mounting p

oin

t fo

r re

lief

valv

e p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

VP

um

p d

rain

G1/4

”.

Variant

double

relie

f valv

e

Variant

stirr

up

Fla

nges c

om

patible

with o

ld A

K s

eries

Fla

nges P

N16 /

PN

20

Page 31: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

31/35NT 1012-B00 11 13 Pump A12 A e

10. TECHNICAL CHARACTERISTICS (continued)

A12

A

with h

eating jacket

OH

eating jacket

dra

in G

1”.

PP

um

p p

late

.

P1

Pum

p r

ota

tion d

irection p

late

.

U1

Heating jacket

inle

tfo

r liq

uid

Heating jacket

outlet

for

ste

am

U2

Heating jacket

outlet

for

liquid

Heating jacket

inle

t fo

r ste

am

VP

um

p d

rain

G1/4

”.

2 x

1/2

” B

SP

Depth

max.

: 15

Page 32: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

32/35NT 1012-B00 11 13 Pump A12 A e

11. TROUBLESHOOTING

ZERO OR INSUFFICIENT FLOW

1 PRELIMINARY CHECKS

1-1

Make sure that the plastic plugs have been taken away from the ports of the pump and that the pump is

running (defective drive, damaged motor, etc., faulty transmission : broken coupling, sliding belt, worn or

poorly coupled clutch, etc.).

1-2

Make sure that the pump rotates in the correct direction corresponding to the direction in which the liquid

circulates in the installation (cf. the pump plate). If necessary, change the electric motor connections or

adjust the piping as necessary (diesel engine drive).

1-3Make sure that there is liquid in the tank from which the pump draws and that the end of the inlet piping is

constantly submerged.

1-4Make sure that the pump rotation speed is sufficient. Determine this by checking the speed of the pump

motor (see motor plate) and the speed reduction ratio (see reduction gearbox plate) or use a rev. counter.

If these checks do not highlight the problem :

2MEASURE THE DISCHARGE PRESSURE (as close to the outlet of the pump as possible, with a mini-

mum distance of 5 pipe diameters).

2-1 If the pressure is lower than the figures given for the material, or null, this could be due to :

2-1-1A poorly adjusted relief valve, the valve setting is lower than the discharge pressure (tighten the set screw

or replace the spring after checking that the electric motor is suitably protected).

2-1-2The valve is not closed ; either the plunger has not returned to its initial position, or there is dirt on the

valve seat.

2-1-3 The pump is worn, this will also affect the suction capacity of the pump (cf 3-2-2 c).

2-2 If the pressure complies with the equipment data (pump speed and motor output) it is possible that :

2-2-1

The pressure required for the given installation to obtain the required flow rate is too high and the flow is

partially or totally circulating via the relief valve, or :

a. the height of the discharge is too great (reduce it by bringing the discharge tank to the level where the

pump is). If suction conditions are favourable, the pump can also be moved closer to the discharge tank.

b. that head losses are too high because :

- the piping is unsuitable (too many "bends", too long or the diameter is too narrow) for the process

conditions : Flowrate, Specific Gravity, Viscosity (this can change considerably with temperature).

Reduce the head losses by simplifying the circuit : reduce of the number of fittings, valves, elbows,

etc... Move the pump closer to the discharge tank or vice versa, if conditions permit. Increase the

diameter of the piping, etc... Reduce the product viscosity via heating. Reduce the flow, etc...

- of partially blocked piping (valve partially closed, tap partially shut, cloth obscuring flow, etc.).

2-2-2The discharge piping is completely blocked (valve fully closed, tap completely closed, cloth plugging flow,

full protection seal left by carelessness, etc...), in this case, all the liquid passes via the relief valve.

Page 33: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

33/35NT 1012-B00 11 13 Pump A12 A e

11. TROUBLESHOOTING (continued)

3 MEASURING THE VACUUM PRESSURE (as close as possible to the pump inlet, inlet side).

3-1If the vacuum is high, e.g. higher than or equal to 6 to 7 metres WC (0.6 to 0.7 bara i.e. about 45 or

50 cm of mercury), this can result in pump noise. The cause could be :

3-1-1

a. the suction lift is too high (reduce it by taking the pump down closer to the level of the liquid)

b. the dynamic suction losses are too high :

1. cf 2-2-1 b

2. the inlet piping orifice is too close to the bottom of the tank.

3-1-2 The inlet piping is completely blocked (valve, tap, filter, cloth, full seal forgotten, etc.)

3-1-3

The liquid vapour pressure is too high (or has become too high following, for example, a change of tem-

perature). Bring the pump closer to the level of the liquid, install the pump closer to the feed or cool the

liquid to reduce the vapour pressure.

3-2

If the vacuum is low, for example, less than 3 metres WC (i.e. about 20 cm of mercury), check for leaks

on the inlet pipe, isolate the pump from the inlet piping (by closing the valve nearest the pump or by inser-

ting a full flange seal) and measuring the vacuum once again.

3-2-1

If the vacuum is high with the isolating valve closed on suction line, e.g. higher than or equal to 6 or 7

metres WC (i.e. about 45 to 50 cm of mercury), the pump is not the cause :

a. there must be an air inlet upstream of the pump isolating valve.

b. the liquid vapour pressure is or has become too elevated due to a change of temperature (cf 3-1-3).

3-2-2

If the vacuum is low or non-existent, the reason could be :

a. that the valve is not closing properly, due to dirt on the valve seat.

b. air is entering the pump (check the front cover seals, flanges, etc...)

c. the pump is worn and the internal tightness is out of specification (the piston bushings are worn, worn

piston and cylinder, broken piston wear compensation springs, worn partition, broken shaft).

ABNORMAL HEATING OF BEARINGS

4 This heating can be caused by :

4-1 - excessive tension in the transmission (belt or chain) on the pump shaft.

4-2- excessive pulling on the pump flanges by the piping (in this case, it must have been necessary to force

the piping into position to connect it to the pump).

4-3- poor alignment of the pump - due for example to 4-2 (the pump is partially or totally uncoupled, the

pump shaft and drive shaft are not aligned with each other).

4-4- inadequate anchoring of the pump unit leading to deformation of the chassis (make sure that the chas-

sis is clear of the ground except for the 3 anchoring points).

4-5 - seizing of the bushings (cured product preventing lubrication and cooling, excess power, etc...).

4-6- running in period for new bearings. The temperature should return to normal values after a few operating

hours.

LEAKING SEALS

5

The seal may leak if :

a. it was damaged during assembly (scratching on the shaft), damage to ‘O’rings in seal,

b. it is incompatible with the product (chemical and mechanical aggression / abrasion of ‘o’ rings and seal faces),

c. it is worn through normal use.

6The shaft is worn at the seal or does not rotate correctly due to poor alignment, excessive tension on the

transmission belts, chains, etc...

Page 34: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

34/35NT 1012-B00 11 13 Pump A12 A e

11. TROUBLESHOOTING ( continued)

ABNORMAL NOISES

These noises can be caused by hydraulic and mechanical sources. They can be distinguished by the fact

that only the former disappear (or at least lessen) when air is allowed into the inlet pipe.

7 HYDRAULIC NOISES

These noises can come from insufficient product being supplied to the pump, or :

7-1- the rotation speed is too high for the installation conditions (increase of viscosity due to a change of

product or a reduction of temperature, etc.).

7-2- that the suction head is too high or has become too high due to excessive head losses following clog-

ging of the piping or filter, a change of viscosity of the liquid, etc.,

7-3 - an increase of the vapour pressure with a rise of temperature.

8 MECHANICAL NOISES

These can stem from :

8-1- the relief valve knocking on the seat when the discharge pressure is close to the relief valve adjustment

pressure (turn the adjustment screw after making sure that the electric motor is suitably protected).

8-2- abnormal stress on the pump : the transmission is pulling on the shaft, pulling on the flanges by the

piping.

8-3 - a broken part or foreign body has entered the pump.

EXCESS POWER CONSUMPTION

9 The most spectacular event occurs when a diesel engine stalls or the power to an electric motor is shut off.

9-1

If this incident occurs when closing the discharge line, the cause may be :

a. the relief valve is assembled back to front.

b. the relief valve is adjusted too tight.

c. the motor protection is adjusted too low or wrong circuit breaker have been fitted.

9-2

If the incident occurs during operation, the cause could be :

a. an inadequate motor (in this case, the discharge pressure complies with what was expected).

b. head losses higher than expected - following higher viscosity or specific gravity than planned initially

(in this case, the discharge pressure is higher than that planned. The pressure can be reduced by

loosening the relief valve adjustment screw - the flow is decreased).

c. excessive speed of rotation.

d. a fault of the equipment (faulty alignment, deformation of the chassis, stress exerted by the piping on

the flanges, seizing, etc.).

Excessive consumption of electricity can also be due to a poor motor connection (e.g. a 3 phase motor

operating on 2 phases).

Page 35: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

35/35NT 1012-B00 11 13 Pump A12 A e

Es

t co

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aux

disp

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aux

mac

hine

s to

urna

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NF

EN 8

09:2

009

N

F EN

167

2-2:

2009

NF

EN I

SO 1

3857

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8

NF

EN 1

2162

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9

Dir

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« A

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du

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mar

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et

aux

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ATEX

dél

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à l’u

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6/42

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and

elec

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appl

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tive

mac

hine

s.

NF

EN 8

09:2

009

N

F EN

167

2-2:

2009

NF

EN I

SO 1

3857

:200

8

NF

EN 1

2162

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9

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as

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with

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the

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it po

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ax T

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Con

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on :

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12. CERTIFICATE OF CONFORMITY

Page 36: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

A18 A pump

INSTALLATION

OPERATION

MAINTENANCE

INSTRUCTIONS 1012-C00 e

Section 1012

Effective November 2013

Replaces September 2013

Original instructions

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

Page 37: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

2/35NT 1012-C00 11 13 Pump A18 A e

ECCENTRIC PISTON PUMPMOUVEX PRINCIPLE

SAFETY, STORAGE, INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL : A18 A

Definition of safety symbols

This is a SAFETY ALERT SYMBOL.

When you see this symbol on the product, or in the manual,

look for one of the following signal words and be alert to the

potential for personal injury, death or major property damage.

Warns of hazards that WILL cause serious personal injury,

death or major property damage.

Warns of hazards that CAN cause serious personal injury,death or major property damage.

Warns of hazards that CAN cause personal injury or propertydamage.

NOTICEIndicates special instructions which are very important andmust be followed.

DANGER

WARNING

CAUTION

TABLE OF CONTENTS Page

1. GENERAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.3 Identification and pump marking . . . . . . . . . . . . . . . . .4

2. GENERAL SAFETY INFORMATIONS . . . . . . . . . . . . . . . .53. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.1 Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.2 Installation design . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3 Installation and pump protection . . . . . . . . . . . . . . . . . .7

3.4 Hoisting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.5 Unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4. USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94.1 Noise level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.3 Operation without any pumped product . . . . . . . . . . .10

4.4 Shutting down the pump . . . . . . . . . . . . . . . . . . . . . . .10

5. OPENING OF THE PUMP . . . . . . . . . . . . . . . . . . . . . . . .115.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.2 Reverse of main rotation direction . . . . . . . . . . . . . . .12

5.3 Cylinder - piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5.4 Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.5 Mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

5.6 Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.7 Piston bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.8 Slide block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.9 Slide block shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.10 Slide block pads . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.11 Piston rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.12 Relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.13 O-rings replacement . . . . . . . . . . . . . . . . . . . . . . . . .25

5.14 Stirrup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276.1 Greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.2 Checking of parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

7. PARTICULAR VARIANTS . . . . . . . . . . . . . . . . . . . . . . . .287.1 Pump with heating jacket . . . . . . . . . . . . . . . . . . . . . .28

8. STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288.1 Short duration (≤ 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.2 Long duration (> 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.3 Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

9. SCRAPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

10. TECHNICAL CHARACTERISTICS . . . . . . . . . . . . . . . . .2910.1 Weight and center of gravity . . . . . . . . . . . . . . . . . .29

10.2 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.3 Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.4 Operation limits and characteristics . . . . . . . . . . . . .29

11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .3212. CERTIFICATE OF CONFORMITY . . . . . . . . . . . . . . . . .35

Unit without suffix :

Differential pressure, for example, pressure difference between

equipment suction and discharge.

Unit with suffix "a" :

Absolute pressure.

Unit with suffix "g" :

Gauge pressure, given regarding to atmospheric pressure

(~101325 Pa, taken at 1 bar / 14,5 psi in this IOM).

PumpPdisPsuc

Pompe

Pasp Pref Example :

Psuc = -0,2 barg = 0,8 bara

Pdis = 8,8 barg = 9,8 bara

∆P = Pdis - Psuc = 9 bar

USED PRESSURE UNITS

These Instructions contains important information concerning the reception, the installation, the operation, the adaptation, the

dismantling, the maintenance and the disposal of the A18A pump.

These Instructions MUST accompany the pump. Read these whole instructions before using the pump.

If necessary, do not remove the warning and use label stickers that are found on the pump.

The information given in this document are based on the most recent data available at the time of its diffusion. MOUVEX keeps

the right to modify without prior notice information and illustrations contained in this document.

Page 38: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.1 Principle of operationPumps MOUVEX A II Series are volumetric pumps with

eccentric piston (following the MOUVEX™ principle).

When piston moves inside cylinder, drvien by eccentruc

shaft, it creates four chambers that increase and des-

crease, thus creating suction and discharge.

These chambers are moving two by two with A180°

opposition, thus giving to fluid crossing the pump a cons-

tant flow rate.

3/35NT 1012-C00 11 13 Pump A18 A e

1. GENERAL DATA

suction port

discharge port

Page 39: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.2 Codification

1.3 Identification and pump marking

A18A ST VT BCA MSTTVT C 10

ConceptionST StandardEV Jacket

SealsVT FKMCVT FKM encapsulated FEP

FlangesBCA Flanges compatibles with old A SeriePN16/20 Flanges compatibles PN16 and PN20

Mechanical sealMSTTVT Mouvex Seal tungsten carbide / tungsten

carbide / FKMMSCSVT Mouvex Seal carbone / stainless steel / FKMMSTTCVT Mouvex Seal tungsten carbide / tungsten

carbide / FEP FKMMSCSCVT Mouvex Seal carbon / stainless steel / FEP

FKMPGSN Provided for normalized single mechanical

seal

Internal relief valveC Single2C DoubleET Stirrup

Internal relief valve springS Without spring (stirrup)3 3 bar6 6 bar9 9 bar10 10 bar

Serial number

Short description

(ex : A18A-ST-ST-VT-BCA-MSTTVT-C-10-)Year

Additional information (ex : ATEX marking)

4/35NT 1012-C00 11 13 Pump A18 A e

1. GENERAL DATA (continued)

Page 40: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5/35NT 1012-C00 11 13 Pump A18 A e

2. GENERAL SAFETY INFORMATIONS

WARNING

DO NOT PERFORM STARTUP WHEN THE

PUMP IS NOT COMPLETELY RISE AND ITS

PROTECTIONS WERE NOT REPLACED.

Do not operate

without guard

in place.

WARNING

DO NOT MAKE GETTING STARTED IN THE

ABSENCE OF PROTECTION AGAINST

OVERPRESSURE.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

DURING THE INSTALLATION AND MAINTE-

NANCE PROCEDURES, ALL ELECTRICAL

WORK MUST BE PERFORMED BY QUALI-

FIED PERSONNEL.

Dangerous voltage.

Can cause

injury and death.

WARNING

DISCONNECT THE ELECTRICITY SUP-

PLY BEFORE ANY MAINTENANCE

OPERATION.

Dangerous voltage.

Can cause

injury and death.

WARNING

RELEASE PRESSURE FROM THE SYSTEM

BEFORE ANY WORK ON THE INSTALLA-

TION.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

STOP THE PUMP AND PREVENT RESTAR-

TING, EVEN ACCIDENTALLY, BEFORE ANY

WORK ON THE INSTALLATION.

Do not operate

without guard

in place.

WARNING

USE THE APPROPRIATE MEANS OF

HANDLING TO THE WEIGHT OF THE PARTS.

The weight ot the parts can

be dangerous and may

provoke bodily injuries or

material damages.

WARNING

IF PUMPING HAZARDOUS OR TOXIC

FLUIDS, THE PUMP MUST BE PURGED,

FLUSHED AND CLEANED UP PRIOR TO

PERFORMING ANY SERVICE OPERATION.

Hazardous or toxic

fluids can cause

serious injury.

CAUTION

EXTERNAL SURFACES OF THE PUMP

CAN BE AT A TEMPERATURE LIABLE TO

CAUSE INJURY OR SEVERE DAMAGE.

Extreme heat can

cause injury or

property damage.

CAUTION

CONTROL THE PARTS TEMPERATURE

BEFORE ANY WORK ON THE INSTALLATION.

Extreme heat can

cause injury or

property damage.

CAUTION

CLEAN ALL PUMPED LIQUID FLOWS OR

LUBRICANT THAT COULD CAUSE A FALL.

Slippery lubricant.

Spills should be

cleaned up.

Page 41: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.1 ReceptionMOUVEX is not responsible for any material damage

resulting from transportation or unpacking.

On receipt, visually inspect the packaging to ensure it is

not damaged. If necessary, indicate the appropriate

reservations on the transport and send a registered letter

to the carrier within 48 hours (if possible accompanied by

photos).

When unpacking, check that the pump and any other

materials are not damaged. If necessary, send a registered

letter to the carrier within 48 hours (if possible accompa-

nied by photos).

The pump must be supplied by the following documen-

tation :

• Delivery note,

• Pump Instructions,

• If necessary, complementary Instructions (ex : ATEX),

• If necessary, Instructions materials provided with the

pump (ex : motor, sensors…).

3.2 Installation design

3.2.1 Pump

To obtain the service expected from a MOUVEX pump,

regarding both performance and longevity, it is vital that

the type of pump, its speed and the materials used for its

construction are determined as a function of the pump

output, its installation and operating conditions.

You can contact our Technical Services at any time to

ask for the information you require.

3.2.2 Piping

Suction pipe length

Length should be as short as possible.

Suction pipe diameter

Diameter must be at least equal to pump port diameter

and even more if required by pumping conditions.

Suction pipe configuration

Check tightness to avoid accidental air intake.

--------------------------------------------------------------------

Not recommanded

To be avoided if possible

Recommanded

L = 10 x Dminimum

R = 3 x D minimum

6/35NT 1012-C00 11 13 Pump A18 A e

3. INSTALLATION

Page 42: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Pipe alignment and supporting

Pump must not support piping nor endure stress resul-

ting from piping weight or dilatation effects. For latters,

expansion loops should be included.

Pipe equipment

• Place valves close to the pump to avoid draining pipe

during maintenance operations. Preferably select full

bore ball or butterfly valves.

Pressure connections on pump suction and discharge

are recommended for settings an controls.

Protect pump by using a MOUVEX prefilter on suction.

Make sure piping, vessels valves and other installation

devices are carefully cleaned before mounting.

• MOUVEX pumps are self priming. However, if line

emptying should be avoided and/or if suction lift is high,

a foot valve can be added.

• If pumped liquid presents a risk of in pipe solidification

and potential dilatation, low points on the pipe should

be avoided or equipped with drain valve.

• If installation is heated, it must be designed so that fluid

dilatation can evacuate through piping. Therefore fluid

contained in piping must be heated before fluid contained

in the pump. Also check that a heated pump is not iso-

lated by closed valves.

3.3 Installation and pump protection

Do not startup the pump if there is no protection against

overpressure.

The pump must be protected against excess pressure. It

can be delivered with a internal relief valve or a pressure

switch to carry out this function.

If pump is used in both directions, the pump must be

protected in both directions of operation.

3.3.1 Protection by integrated relief valve

NOTICE

Pump internal relief valve cannot be used to protect

the installation.

3.3.1.1 Internal relief valve operation

The compensated internal relief valve operates like a

valve, by automatically limiting the discharge pressure at

the value for which it is adjusted.

When the discharge pressure reaches the adjusted

pressure of the spring, the valve opens, thus permitting

the partial or total return of the liquid to the inlet side of

the pump.

When the discharge is closed, the compensated internal

relief valve is designed to generate a very small increase

of pressure, relative to the setting pressure, which means

that the motor will economically supply the necessary

additional power for specific working conditions.

It should be noted that the role of the internal relief valve

is limited to protecting the pump against accidental over-

pressure.

It is vital to provide an appropriate overload protection for

the drive, unless the model used can handle the increased

load due to maximum overpressure (pump sending its flow

through the internal relief valve with the spring tightened

to the maximum).

The double internal relief valve assembly consists of two

single internal relief valves in opposition. This protects

the pump in both directions of rotation without the need

for mechanical intervention. Operation on each direction

is identical as above. The operation of each direction is

identical to the above. The setting of this internal relief

valve must be performed for both directions of operation.

WARNING

7/35NT 1012-C00 11 13 Pump A18 A e

3. INSTALLATION (continued)

Page 43: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.3.1.2 Internal relief valve orientation

Contrary to double internal relief valve designed for pro-

tect the pump in the two directions of rotation, the single

internal relief valve only protects the pump in one direc-

tion of operation. It is therefore imperative to check for

proper orientation before the first start of the installation

or after any modification in the pumping circuit or inter-

vention on the drive, by verifying that the cap 44827 is

located on the inlet side and reverse the mounting direc-

tion of the internal relief valve if necessary.

This control is not necessary in the case of a double

internal relief valve, protecting the pump in both directions

of operation.

To modify the mounting direction of the internal relief

valve, see § RELIEF VALVE.

3.4 Hoisting devicesUsing a lifting ring, fixed to the upper part of the pump,

to raise it.

• Pump with relief valve : threaded hole M10 on the

relief valve.

• Pump with stirrup : threaded hole M12 on the pump

main body.

Pump weight : see § OVERALL DIMENSIONS.

3.5 Unit assembly

3.5.1 Anchoring the pump units

The correct seating of the pump is vital for its efficient

operation and its longevity.

The surface must be resistant enough to absorb the

stresses due to the pump unit without deformation.

In the case where the unit is fastened by anchor lugs or

bolts, it must be carefully wedged to prevent any defor-

mation of the chassis when tightening the bolts.

Deformation of the chassis will cause stress prejudicial

to the pump and the drive device and put the coupling

out of true, thereby causing vibrations, noise and prema-

ture wear. Care must be taken so that the chassis is

clear of the ground, apart from the base plates.

The chassis is equipped with a ground connection that

must be used.

We recommend leaving an unoccupied space of about

50 cm, on either end of the chassis, to permit access to

the bolts fastening the pump, reduction gear and motor

together.

3.5.2 Coupling selection

NOTICE

Over 5 bar, the pump should be mounted with a double

coupling type.

3.5.3 Alignment of motor / pump and reduction

gearbox / pump shafts

Do not start the pump as long as it is not secured

and its protections not in place.

It is important to control the alignment of motor / pump

and reduction gearbox / pump shafts at every step of

installation in order to ensure that none of these steps

generates stress on the pump unit or the pump itself :

• after fastening on foundations,

• after fastening the piping,

• after the pump has operated at normal operating

temperature.

SuctionDischarge

WARNING

8/35NT 1012-C00 11 13 Pump A18 A e

3. INSTALLATION (continued)

Page 44: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

The 3 figures below show the operation clearly.

Refer to manufacturer’s instructions to determine the

acceptable values.

NOTICE

Do not rely on the flexible coupling to compensate

for misalignment.

3.5.4 Motorisation

The engine choices must be made in order to comply

with the conditions of the pump (speeds, absorbed

power).

The direction of rotation of the pump unit must be chec-

ked before the first startup and after any work on the

gear motor that may have affect its rotation direction. To

do this, follow the instructions in § COMMISSIONING -

DIRECTION OF ROTATION .

3.5.4.1 Electric motors

Refer to manufacturer’s instructions for the motor instal-

lation.

A particular attention should be given to the following

instructions :

• check that the supply voltage matches the indica-

tions on the motor rating plate,

• comply with the wiring diagram, make sure the

wires are rated for the power and take care with the

contacts which must be thoroughly tightened,

• the motors must be protected by appropriate circuit

breakers and fuses,

• connect the regulatory ground connections.

3.5.4.2 Diesel engine drive

Refer to manufacturer’s instructions for the motor instal-

lation.

Make this check for 4 points:up - down - left - right

Correct

Out-of-parallelism

Angular defect

9/35NT 1012-C00 11 13 Pump A18 A e

3. INSTALLATION (continued)

4.1 Noise levelThe sound level of a pump is greatly influenced by its

conditions of use. Cavitation and pumping products with

high gas contents generally increases the sound level.

Under the following pumping conditions :

• excluding cavitation

• suction pressure ......................... 0 barg

• differential pressure .................... 10 bar

• speed of rotation......................... 450 rpm

• pumped product viscosity........... 10 cSt.

The sound level reached for a A18A pump in good

conditions without the drive is less than 80 dB(A).

With no particular installation design being retained,

sound level has been measured at 1 m from pump sur-

face and 1.6 m. above ground. Maximum value measu-

red from discharge port was 75 dB(A).

4.2 Commissioning

4.2.1 Cleaning

The pumps are delivered well greased, it may be neces-

sary to clean them before putting them in use.

The cleaning can be done either by circulating a appro-

priate liquid, or by removing the pump front cover and

carefully cleaning the internal parts (see § OPENING OF

THE PUMP).

4.2.2 Direction of rotation

The MOUVEX pump is reversible; this allows it to always

circulate the liquid in the desired direction by choosing

the corresponding direction of rotation. In standard ver-

sion, the two directions of rotation do not allow achieving

the same hydraulic performance and a direction of rota-

tion should be privileged for normal operation.

To reverse the main rotation direction of the pump, see

§ REVERSE OF MAIN ROTATION DIRECTION .

For applications requiring the two directions of rotation

provide the same hydraulic performance, contact our

Technical Services.

4. USE

Page 45: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

10/35NT 1012-C00 11 13 Pump A18 A e

The suction and discharge sides are defined as follows :

when an observer faces the shaft, if rotation takes place

clockwise, the intake is on the left; on the contrary if the

rotation is anticlockwise, the intake is on the right.

The reverse of the direction of rotation should be done

after a full stop of the pump.

Controlling the direction of rotation of the motor :

This control must be done without pump product and

suction and discharge circuits vented to avoid genera-

ting unexpected pressure (at suction for example).

Start up vacuum to control the connections are good and

check the direction of rotation corresponds to the direc-

tion of inlet and outlet installation.

4.2.3 Starting-up

Before starting-up, make sure that the pumping condi-

tions are met. The circuit must be in one of its pumping

configurations with corresponding valves open and

especially the inlet valve.

NOTICE

With a product requiring heating, the product must be

brought to its pumping temperature before starting up

the pump.

See also the recommendations in § INSTALLATION

DESIGN - PIPING).

4.2.4 Surface temperature

Depending on the operating conditions (temperature of

the pumped liquid, differential pressure ...), the use of

the pump can generate high surface temperatures.

When these temperatures exceed 80°C, protective mea-

sures must be implemented, like :

• reduction of contact with heated surfaces ;

• warning to operators.

These measures must be taken from 68°C in case of

reduced space around pump, possibly leading to a longer

contact with pump surface.

4.3 Operation without any pumped productPumps using the MOUVEX principle can be run dry,

without any pumped product in the pump (for example

during the priming) for a period of five minutes, without

causing damage.

Additional restrictions may apply to certain applications.

If necessary, refer to additional instructions supplied with

the pump (ex : ATEX additional instructions).

4.4 Shutting down the pumpWhen shutting down the pump, we recommend waiting

for the pump to stop completely before closing the val-

ves, especially the inlet valve.

If the pump circuit is to be located between valves and/or

a non-return valve, you need to take account of the

variations in temperature that can lead to contraction of

the liquid in the circuit. In this case, you need to provide

some means of compensating for the contraction (see §

INSTALLATION DESIGN - PIPING for examples of possible

measures). The opening pressure for this valve should

be compatible with the permitted pressure for the other

components in the circuit.

In the case of liquids containing particles settling on

shut-down, it is necessary to make sure the consistency

of the deposit will not impede restarting the pump.

CAUTION

4. UTILISATION (continued)

Page 46: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1 Preparation

5.1.1 Necessary tools

Reverseof

mainrotatio

ndirection

Cylinde

rpiston

Bushings

Mecha

nicalseal

Bearing

Piston

bearing

Slideblock

Slideblockshaft

Slideblockpa

ds

Piston

rear

seat

Shaft

Internalreliefvalve

Stirrup

13 mm Open end and socket wrenches x x x x x x x x x

16 mm Open end and socket wrenches x x x x x x x x x x x

17 mm Open end and socket wrenches x x x x x x x x x x x

18 mm Open end and socket wrenches x x

19 mm Open end and socket wrenches x x x x x x x x x x x x x

Adjustable open end wrench 44 mm x

Allen wrench size 2,5 x

Allen wrench size 6 x x x x

Allen wrench size 10 x

Flat screwdriver x x x

Mallet x

Bearing puller (bore Ø 30 mm depth 65 mm) x

Pin punch Ø 2,5 mm x

Pin punch Ø 3 mm x

Pin punch Ø 6 mm x x x x x x x x

Block (see § CYLINDER PISTON) x x x x x x x x

Cylinder Ø 65 x

Tube outside Ø 61 x

Press x x

Medium thread lock type Loctite® 243* or equivalent. x x x x x x x x x x xTightness product for flat surfaces :

applications on solvents :GEB oil® or equivalent ;

other applications :Loctite® 574* or equivalent

x

Fixing product type Loctite® 640* or equivalent x

Flat file x

Sand paper (n°320) x x

Stud remover M10 x x

Stud remover M12 x

Bearing grease (see § MAINTENANCE) x x x x

For setting or control operationFor spare parts replacement operation

11/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP

* Loctite® est une marque déposée.

Page 47: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1.2 Assembly torques

M6 ...........................5 ±2 N.m

M8 ...........................11 ±5,5 N.m

M8 x 125 .................5 ±2 N.m

M10 (studs) .............35 ±8 N.m

M10 (others) ............20 ±6 N.m

M12 .........................45 ±8 N.m

G1/4.........................3,5 ±1 N.m

G1/2 conical ...........6 ±2 N.m

5.1.3 Pump preparation

Before any intervention on the pump :

If pumping hazardous or toxic fluids, the pump must

be purged, flushed and cleaned up prior to perfor-

ming any service operation.

Stop the pump and prevent restarting, even acciden-

tally, before any work on the installation.

Disconnect the installation.

Relieve the system pressure.

Control the parts temperature.

Drain the pump.

Make sure the isolation valves, if any, are closed before

pulling out the drain plug 12434 and its seal 12412.

Remove the seal 12412 and check its condition. Replace

it if necessary.

Once the pump is drained, fit the plug 12434 and its seal

12412.

5.2 Reverse of main rotation directionDisconnect the pump from the engine and remove the

coupling.

• Coupling supplied by MOUVEX

Remove the locking screw, then remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Remove the screws 12706 and theirs washers 12721.

Without remove the parts from the main body, rotate

bearing cover 12705 – bearing cage 12701 subassembly

to obtain the desired position (drain holes must remain

in vertical position ; do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

WARNING

Drain hole

12/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 48: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If bearing cage 12701 remain stucked to the main body

12101, apply the following procedure :

• Remove the key 12508.

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 into the threaded holes of

the bearing cage 12701. Keep tightening screws 12706,

with balanced tightening between the two screws until

parts separate.

• If necessary, clean the bearing 12703 and fill it with

grease.

• Refit the bearing cover with its screw 12706A.

Positions détail

5.2.1 Pump with single relief valve

Reverse internal relief valve position as follow.

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Position the seals 44858 in their grooves.

Turn the internal relief valve through 180° (the internal

relief valve cap 44827 must be oriented suction side).

Take care not to pinch the seal 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic was-

hers 44859A. Tighten the screws making sure tightening

is balanced between the two screws.

Main clockwise direction of rotation

Main anticlockwise direction of rotation

SuctionDischarge

13/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 49: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.2.2 Pump with double relief valve

Check that pressure settings correspond to requirements

for each direction of rotation.

If necessary, proceed to settings (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

5.3 Cylinder - piston

5.3.1 Dismantling

Dismantling of front cover

Remove the front cover bolts (screw 12409, nuts

12409A and washers 12409E - 12409F).

Remove the front cover set (12401-12403-12414-

12415-12416-12417-12420-12310-12311) by progressi-

vely separating it from the pump body. If necessary, use

the threaded holes on the front cover by screwing pro-

gressively two screws 12409.

Remove the seal 12403 and check its condition.

Replace it if necessary.

Check the front cover bushing 12415 condition. Replace

it if necessary.

Dismantling of piston

Remove the pin 12524.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Remove the sleeve 12521.

Remove the piston 12301O by softly pulling on slide block

12312. If necessary, use a screwdriver as a lever to pull

it away from cylinder 12201 (be careful not to damage

friction faces).

Check piston 12301O condition. Replace it if necessary.

Check piston bushing 12303 condition. Replace it if neces-

sary.

150

14/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 50: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of cylinder

Remove the nuts 12206-12115 and theirs washers

12207-12116.

Separate the cylinder 12201 from the main body 12101

with a mallet and remove the seal 12104 and check its

condition. Replace it if necessary.

Check the cylinder 12201 condition. Replace it if necessary.

CAUTION

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

5.3.2 Reassembly

Assembly of cylinder

Clean the seal housing 12104.

Fit the seal 12104 in the main body 12101.

Applying a sealing product between the main body 12101

faces and the cylinder 12201 (see § PREPARATION).

Fit the nuts 12206 and 12215 with theirs new ridged

conic washers 12207 and 12116.

Take care not to pinch the seal 12104 during the assembly.

Assembly of piston

Lubricate the friction surfaces of the piston 12301O with

a product compatible with the pumped liquid.

Fit the piston 12301O on its piston bearing 12503.

Fit he sleeve 12521 on the shaft 12501.

Fit the pin 12524 (until it cannot move any forward) taking

care not to damage the sleeve.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Sealing product application zone

150

15/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 51: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of front cover

Clean the seal housing 12403.

Fit the seal 12403 on the cylinder 12201.

Orientate the slide block 12312 to make it pass between

the pads 12404.

Fit the front cover 12401 on the cylinder 12403.

Take care not to pinch the seal 12403 during the assembly.

Take care not to damage the bushing 12415 during the

assembly.

Fit the screws 12409 and nuts 12409A with theirs new

ridged conic washers 12409E and 12409F.

5.4 Bushings

5.4.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Piston bushing

Remove the bushing 12303 of the piston 12301O with a

press and a cylinder.

Front cover bushing

Remove the screws 12417 and theirs washers 12420.

Remove the set front cover bearing - bushing (referen-

ces 12414 - 12415 - 12416) from the front cover 12401.

Remove the seal 12416 and check its condition.

Replace it if necessary.

Remove the bushing 12415 of front cover bearing 12414

with a puller.

16/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 52: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.4.2 Reassembly

Piston bushing

Insert the bushing 12303 in the piston 12301O with a

press and a cylinder until the faces of the bushing and

the piston are aligned (on both sides).

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Front cover bushing

Orientate bushing chamfer on the outer side (see sche-

me above).

Insert the bushing 12415 in the front cover bearing

12414 using a press and a cylinder until bushing 12415

and front cover bearing 12414 faces are aligned.

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Clean the O-ring housing 12416.

Fit the O-ring 12416 on the front cover bearing 12414.

Fit the screws 12417 and theirs new ridged conic was-

hers 12420 with medium thread lock.

Follow the instructions in § CYLINDER-PISTON to finish the

reassembly.

5.5 Mechanical seal

5.5.1 Type

The A18A pumps can be equipped with :

• standardized mechanical seals Ø 35 (short types

standardized mechanical seals - K - according to

EN 12756),

• MOUVEX mechanical seals Ø 35.

5.5.2 Operation

The shaft drive the one piece rotating part in a rotary

motion.

The stationary seal face is fixed on the pump body.

Sealing is done :

• Static, by the O-rings located between the rotating

part and the shaft and between the stationary seal

face and the pump body.

• Dynamic, by the contact surfaces between the rota-

ting part and the stationary seal face.

Sealing is therefore done as a function of the condition

of these contact surfaces and the seals.

5.5.3 Dismantling

Preparation

Disconnect the pump from drive and remove the coupling

and the key 12508.

• Coupling supplied by MOUVEX

Remove the locking screw, remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Follow the instructions in § CYLINDER - PISTON.

17/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 53: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of bearing cover

Note the position of the screw 12706A (right or left).

Remove the screws 12706 and theirs washers 12721.

Remove from the main body 12101 the set shaft - bearing

cover - bearing cage - seal - bearing - mechanical seal -

piston bearing (references 12501 - 12503 - 12504 -

12511 - 12600 - 12627 - (12641 - 12642) - 12701 -

12703 - 12704 - 12705 - 12706A - 12707 - 12708 -

12717 - 12733).

Remove the screw 12706A.

Refit the bearing cover 12705, taking care not to dama-

ge the lip seal 12707 on the key housing edges.

Check the lip seal 12707 condition. Replace it if neces-

sary.

If bearing cage 12701 would remain stucked on main

body 12101, follow the following procedure :

• Note the position of the screw 12706A (right or left).

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 in the bearing cage

12701 threaded holes. Keep tightening the screws

12706, with balanced tightening between the two

screws until parts separate.

NOTICE

Once bearing cover 12705 is removed, shaft is hold

only be bearing and may fall which could damage

the mechanical seal. To prevent this, keep holding

shaft 12501 and bearing cage 12701 to limit ball joint

movement, for instance by putting it vertically).

NOTICE

Once bearing cover 12705 is removed, the bearing is

no longer protected against impurities. To prevent

any pollution of bearing grease, cover bearing with

a protection sheet.

Dismantling of the bearing cage

Remove the seal 12717 and check its condition.

Replace it if necessary.

Remove the ring 12704.

Remove the shaft 12501 from the set bearing cage -

bearing (references 12701 - 12703 - 12733 - 12627 and

stationary seal face mechanical seal), taking care not to

damage the Nilos seal 12733.

Dismantling of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Dismantling of the mechanical seal rotating part

Remove the rotating part 12697 (mechanical seal driver

12641 and its screws 12642 can be left in place) from

shaft 12501 taking care not to scratch it.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

18/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 54: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

• Dismantling of the mechanical seal stationary seal

face

Remove the stationary seal face 12604 and its seal

12605.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Dismantling of mechanical seal (other)

Refer to manufacturer’s instructions.

5.5.4 Reassembly

Reassembly of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Assembly of mechanical seal stationary seal face

If necessary, clean the bearing 12703 of its grease.

Clean the seal housing in the bearing cage 12701.

Fit the seal 12605 in the bearing cage 12701.

Fit the stationary seal face 12604 in the bearing cage

12701, taking care of aligning pin 12627 located in

the bearing cage 12701 with groove on the stationary

seal face 12604.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

• Assembly of mechanical seal rotating part

Check shaft 12501 surface condition. Rub it down with

thin sand paper if there are scratches on seal rotating

part O-ring place. In particular, it must be check that

there are no scratches parallel to shaft axle.

If necessary, fit the mechanical seal driver 12641 and

its screws 12642 on the shaft 12501, and position it

so that it cannot move any forward. Fit the screws

12642 with medium thread lock.

To reduce friction, wet with water or alcohol surfaces

on which O-rings will slip during assembly.

If seal includes FEP coated FKM O-rings, use moun-

ting cone supplied with mechanical seal.

Fit the rotating part 12697 aligning ergots driver 12641

grooves.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Reassembly of mechanical seal (other)

Refer to manufacturer’s instructions.

Fit the mechanical seal rotating part on the shaft 12501

and position it so that it cannot move any forward.

NOTICE

If seal presents a large inlet chamfer, position seal

manually so that its end correspond to the stop.

19/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 55: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of the bearing cage

Fit the set bearing cage (12701 - 12703 - 12733 - 12627

and mechanical seal stationary seal face) on the shaft

12501.

NOTICE

As long as bearing cover 12705 is not mounted,

shaft is hold only be bearing and may fall which

could damage the mechanical seal. To prevent this,

keep holding shaft 12501 and bearing cage 12701 to

limit ball joint movement, for instance by putting it

vertically.

Fit the ring 12704 on the shaft 12501.

If necessary, fill the bearing 12703 with grease (see §

MAINTENANCE).

Clean the seal housing 12717.

Fit the seal 12717 on the bearing cage 12701.

Assembly of bearing cover

If necessary, fit the lip seal 12707, lip orientated outside

in the bearing cover 12705.

Fit the bearing cover 12705 in the bearing cage 12701.

Fit the screw 12706A.

Insert shaft assembly in the main body 12101 taking care

to :

• position the screw 12706A on same side as before

dismantling. When changing the direction of rotation of

the pump, see § REVERSE OF MAIN ROTATION DIRECTION ;

• position bearing cage 12701 drain holes in vertical

position (do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

If necessary, grease the bearing (see § GREASING).

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

5.6 Bearing

5.6.1 Dismantling

Follow the instructions in § MECHANICAL SEAL.

After removing the bearing cage 12701, remove the

bearing 12703 of the cage 12701 with a press.

5.6.2 Reassembly

Clean the bearing housing 12705.

Fit the Nilos seal 12733 in its housing.

Fit the bearing 12705 in the bearing cage 12701 by pres-

sing on its outer ring with a press and a tube.

Follow the instructions in § MECHANICAL SEAL to finish the

reassembly.

Drain hole

20/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 56: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.7 Piston bearing

5.7.1 Dismantling

Follow the instructions in § MECHANICAL SEAL to remove the

set shaft - bearing cover - bearing cage - seal - bearing

- mechanical seal - piston bearing (references 12501 -

12503 - 12504 - 12511 - 12600 - 12627 - (12641 -

12642) - 12701 - 12703 - 12704 - 12705 - 12707 - 12708 -

12717 - 12733).

Remove the screws 12511.

Remove the springs 12504 and check their condition.

Replace them if necessary.

Remove piston bearing 12503.

5.7.2 Reassembly

Fit piston bearing 12503.

Fit the springs 12504 in theirs housings.

Fit the screws 12511.

5.8 Slide block

5.8.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nut 12309 and its washer 12308.

Remove the slide block 12312 and its bushing 12306

and check their condition. Replace them if necessary.

5.8.2 Reassembly

Fit the slide block bushing 12306 and the slide block

12312.

Fit the nut 12309 and its washer 12308.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

21/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 57: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.9 Slide block shaft

5.9.1 Dismantling

Follow the instructions in § SLIDE BLOCK.

Heat the slide block shaft 12304 to destroy fixing product

taking care not to twist the piston.

Remove the slide block shaft 12304.

Check parts temperature before dismantling.

5.9.2 Reassembly

Clean threading in piston 12301.

Fit the slide block shaft 12304 until it cannot move any

forward with fixing product. Groove must be on piston side.

Adjust slide block shaft 12304 to piston 12301 face by

filing section raising above piston face. Do surface finish

with thin sandpaper. Piston face must not show scratches.

Follow the instructions in § SLIDE BLOCK to finish the reas-

sembly.

5.10 Slide block pads

5.10.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nuts 12408 and theirs seals 12407. Check

seals condition and replace them if necessary.

Remove the slide block pads 12404 with theirs studs

12405 and theirs seals 12406. Check parts condition and

replace them if necessary.

5.10.2 Reassembly

Fit the studs 12405 in the slide block pads 12404.

Fit the seals 12406 on the studs 12405 taking care not

to damage the seals 12406 on studs 12405 threading.

Fit the slide block pads sets (references 12404 - 12405

- 12406) in the front cover 12401.

Fit the nuts 12408 with theirs seals 12407.

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

Pump with heating jacket :

Remove the plugs 12462 to reach the nuts 12405.

WARNING

22/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 58: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.11 Piston rear seat

5.11.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the piston rear seat 12311 by rotating it to release

pins 12314 from their grooves.

Remove the spring 12310. Check its condition and replace

it if necessary.

Caution: Spring is always slightly pressed.

5.11.2 Reassembly

Position the spring 12310 in the front cover 12401.

Fit the piston rear seat in the front cover 12401 by rotating

it to engage pins 12314 in their grooves.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

5.12 Relief valve

5.12.1 Opening pressure setting

Before any modification on setting, check :

• That there is a pressure measurement mean on

pump discharge ;

• Maximum allowable pressure for discharge installa-

tion. This pression corresponds to the lowest maxi-

mum allowable pressure among all discharge

installation components.

During setting operation, operator must make sure

never exceeding discharge installation maximum

pressure.

Loosen the nut 44835.

Turn the adjusting nut 44834 clockwise to increase dis-

charge pressure, anticlockwise to reduce it.

Once setting is done, tighten counternut 44835.

Setting is correct when flow rate is conform to expecta-

tion and when motor endures without incident absorbed

power peak when discharge is closed. This is how relief

valves of complete pumping sets are set, basing on

information given to our technical services.

Pumps supplied bare shaft are delivered with a standard

setting that should be adjusted depending on exact

installation and operation conditions, following procedure

above.

WARNING

WARNING

23/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 59: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.12.2 Spring replacement

5.12.2.1 Dismantling

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Remove relief valve and put it on a workbench or a flat

and clean surface.

Set relief valve opening pressure to its minimum (see §

RELIEF VALVE - OPENING PRESSURE SETTING).

Keep relief valve vertical for the rest of the operation.

Progressively untight screws 44856.

Caution: Spring is always slightly compressed.

Remove the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Remove the seal 44807 and check its condition.

Replace it if necessary.

Remove spring 44824 from relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

5.12.2.2 Reassembly

Keep relief valve vertical during operation.

Introduce spring 44824 in the relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

Check position of valve 44823. It must rest flat on its seat

and move freely in its housing.

Position the seal 44807.

Put back the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Tighten screws 44856 keeping tightening balanced bet-

ween the screws.

NOTICE

It is necessary to press the spring before being able

to tighten.

Position the seals 44858 in their grooves.

Put back the relief valve on the pump respection correct

orientation (the internal relief valve cap 44827 must be

on suction side).

Take care not to pinch the seals 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic washers

44859A. Tighten the screws keeping tightening balanced

between the screws to keep relief valve in correct position.

Set spring pressure at required value (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

WARNING

24/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 60: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.13 O-rings replacement

5.13.1 Dismantling

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT.

Dismantle the adjusting screw set as follows.

Remove the pin 44831.

Remove the nut 44834 and its nut 44835.

Remove the adjusting screw 44826 and its subassembly

(references : 44825 - 44826A - 44837).

Remove the seal 44837 and check its condition.

Replace it if necessary.

Remove the plug 44857.

Remove the seal 44850 and check its condition.

Replace it if necessary.

5.13.2 Reassembly

Position the seal 44850.

Refit the plug 44857.

Fit the spring guide 44825 on the adjusting screw

44826.

Position the washer 44826A and the seal 44837 on the

adjusting screw 44826.

Fit the set in the cap 44827.

Fit the nut 44835 and the nut 44834.

Fit the pin 44831 in the adjusting screw 44826.

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT to finish the reassembly.

25/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 61: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.14 Stirrup

5.14.1 Dismantling

Remove the screw 44859 and its washer 44859A.

Remove stirrup 44867.

Remove the stirrup plugs 44865.

Remove the seals 44858 and check their condition.

Replace them if necessary.

5.14.2 Reassembly

Position the seals 44858 in their grooves.

Refit the stirrup plugs 44865 on the pump.

Take care not to pinch the seals 44858 during the assem-

bly.

Position stirrup 44867.

Fit the screw 44859 with its washer 44859A.

26/35NT 1012-C00 11 13 Pump A18 A e

5. OPENING OF THE PUMP (continued)

Page 62: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

6.1 GreasingExcept for special cases, the MOUVEX pump only requi-

res lubrication of the shaft inlet bearing.

Use a grease for ball bearings.

Lubrication must be done every 1,000 hours of operation

or at least once a year. or in case of accidental soiling of

the grease.

In this case, clean the bearing and its housing before

replacing the grease.

The quantity of grease to be added must not exceed 17 cm3.

For pumps operating at high temperatures (in principle

from 100°C upwards) use a grease with a high drop point.

Preference should be given to lubricants insoluble in the

product pumped and, in the case of hot products, lubri-

cants that maintain good viscosity at the operating tem-

perature.

The other elements of the pump unit (motor, reduction

gear) should be maintained in conformity with their spe-

cific technical instructions.

6.2 Checking of partsDefects listed below require the replacement of parts.

6.2.1 Bushings (12303 - 12415)

Ø interior higher than :

- piston bushing 12303 ...............51,45 mm

- front cover bushing 12415 .......31 mm

6.2.2 Cylinder and piston (12201 - 12301)

thickness rating less than :

- piston 12301............................. 9,6 mm

- cylinder 12201..........................67,4 mm

NOTICE

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

6.2.3 Slide block (12312)

- rating on flat less than 31,86 mm

- inside Ø higher than Ø 18,04 mm

6.2.4 Slide block bushing (12306)

- outside Ø less than 17,90 mm

6.2.5 Slide block pads (12404)

- thickness rating less than 11,45 mm

6.2.6 Piston bearing (12503)

- outside Ø less than 49,75 mm

6.2.7 Sleeve (12521)

- outside Ø less than 29,75 mm

6.2.8 Shaft (12501)

- Ø under the lip seal surface less than 29,85 mm

- Ø under the mechanical seal O-ring surface less than

34,89 mm

6.2.9 Springs (12310 – 12504 – 12703A)

- non-rectilinear spring axis

- spring 12310 : free height less than 33 mm

- spring 12504 : free height less than 24 mm

6.2.10 Seals

- scratch

- break

- holes

- permanent deformation of the seal

6.2.11 Bearing (12703)

- Life time exceeded (lifetime : 20 000 hours)

- Feel able hard point during manual bearing rotation

- Unusual noise during pump operation (squeaking…)

NOTICE

The lifetime for the bearing is a theoretical lifetime

calculated according to the standard ISO 281 recom-

mendations.

This calculation was performed with the values of

speed and acceptable maximal differential pressure

and for a acceptable failure rate of 10%.

27/35NT 1012-C00 11 13 Pump A18 A e

6. MAINTENANCE

Page 63: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If necessary, refer to § OPENING OF THE PUMP for pump disas-

sembly.

7.1 Pump with heating jacketThe jacketed front cover 12401 permits the circulation of

steam or liquid.

The plug 12462 permits the draining of the heating jacket.

To connect the heating jacket, see § OVERALL DIMENSIONS.

28/35NT 1012-C00 11 13 Pump A18 A e

7. PARTICULAR VARIANTS

If necessary, refer to § OPENING OF THE PUMP for pump

disassembly.

8.1 Short duration (≤ 1 month)MOUVEX pumps and motor-driven pumps are well lubri-

cated when delivered to protect the internal parts during

brief storage in a building where :

• the temperature remains between 10°C and 50°C.

• the relative humidity does not exceed 60%.

• exposure to vibration is limited.

• pump is stored in an area sheltered from bad weather

and sun.

NOTICE

In the case of pumps ordered without testing characte-

ristics, it is necessary to grease the inside of the pump

before any storage.

8.2 Long duration (> 1 month)The recommendations from the manufacturer should be

followed if the pump is stored with its gear motor.

Pump ports should be filled with a non-corrosive liquid

that it compatible with the pump components in order to

prevent corrosion.

Unpainted external surfaces of the pump (e.g. shafts,

couplings, etc.) should be covered in some form of anti-

corrosion protection.

The bearing should be well greased. If the pump is to be

stored for more than the life of the grease, this one

should be replaced in time to prevent an excessive

degradation of its qualities.

The best storage conditions are inside a building that

meets the conditions set out above.

If inside storage is not possible, the materials should be

covered to prevent direct exposure to sun and bad wea-

ther. This protection should also prevent condensation.

Rotate pump shaft manually a few revolutions every two

months.

8.3 RestartingFollow the standard start-up procedure for the pump/

motor-driven pump, as well as the instructions below.

Turn the pump by hand to make sure the parts move

freely.

Replace the grease used to lubricate the bearing.

If the pump has a safety relief valve, remove it and

inspect the parts and make sure they move freely (see §

RELIEF VALVE for removal instructions).

8. STORAGE

The pump must be scrapped in compliance with the regula-

tions in force.

During this operation, particular care must be paid to the drai-

nage stages of the pump (pumped product).

9. SCRAPPING

Page 64: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

29/35NT 1012-C00 11 13 Pump A18 A e

10.1 Weight and center of gravity

10.1.1 Weight

From 60 to 75 kg depending on variants.

10.1.2 Center of gravity

NOTICE

The position of the center of gravity may vary slightly

depending on the chosen options (relief valve, stirrup,

front cover with heating jacket...) and the position of

the moving parts inside the pump.

10.2 Overall dimensionsSee following pages.

10.3 CurvesConsult our Technical Services.

10.4 Operating limits and characteristicsAcceptable maximum suction pressure.................. 9 barga

Acceptable maximal differential pressure...............10 bar

Acceptable maximum discharge pressure..............12 barg

Acceptable maximum pressure in heating jacket ... 8 barg

Acceptable maximum speed ..................................450 rpm

Acceptable minimum temperature..........................-15°C

Acceptable maximum temperature ........................80°Cb

Acceptable maximum temperature

in heating jacket......................................................80°Cb

Maximum flowratec .................................................19 m3.h-1

Cylinder capacity ....................................................0,704 L

10. TECHNICAL CHARACTERISTICS

a NOTICE : In the case of a pressure suction higher than the atmospheric

pressure, provide a valve to prevent the flow of liquid when the pump is

stopped.

b Consult our Technical Services for higher temperatures.

c This value can vary depending on your application parameters. You can

contact our Technical Services at any time to ask for the information you

require.

Page 65: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

30/35NT 1012-C00 11 13 Pump A18 A e

10. TECHNICAL CHARACTERISTICS (continued)

Overall dimensions

Variant

double

relie

f valv

e

Variant

stirr

up

Fla

nges c

om

patible

with o

ld A

L s

eries

Fla

nges P

N16 /

PN

20

CR

OS

S-S

EC

TIO

NA

-A

ER

elie

f valv

e s

ettin

g.

PP

um

p p

late

.

P1

Pum

p r

ota

tion d

irection p

late

.

RM

ain

rota

tion d

irection index.

Sp

Mounting p

oin

t fo

r pum

p p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

Sr

Mounting p

oin

t fo

r re

lief

valv

e p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

VP

um

p d

rain

G1/4

”.

Page 66: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

31/35NT 1012-C00 11 13 Pump A18 A e

10. TECHNICAL CHARACTERISTICS (continued)

A18 A

with h

eating jacket

2 x

1/2

” B

SP

Depth

max.

: 15

OH

eating jacket

dra

in G

1”.

PP

um

p p

late

.

U1

Heating jacket

inle

tfo

r liq

uid

Heating jacket

outlet

for

ste

am

U2

Heating jacket

outlet

for

liquid

Heating jacket

inle

t fo

r ste

am

VP

um

p d

rain

G1/4

”.

Page 67: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

32/35NT 1012-C00 11 13 Pump A18 A e

11. TROUBLESHOOTING

ZERO OR INSUFFICIENT FLOW

1 PRELIMINARY CHECKS

1-1

Make sure that the plastic plugs have been taken away from the ports of the pump and that the pump is

running (defective drive, damaged motor, etc., faulty transmission : broken coupling, sliding belt, worn or

poorly coupled clutch, etc.).

1-2

Make sure that the pump rotates in the correct direction corresponding to the direction in which the liquid

circulates in the installation (cf. the pump plate). If necessary, change the electric motor connections or

adjust the piping as necessary (diesel engine drive).

1-3Make sure that there is liquid in the tank from which the pump draws and that the end of the inlet piping is

constantly submerged.

1-4Make sure that the pump rotation speed is sufficient. Determine this by checking the speed of the pump

motor (see motor plate) and the speed reduction ratio (see reduction gearbox plate) or use a rev. counter.

If these checks do not highlight the problem :

2MEASURE THE DISCHARGE PRESSURE (as close to the outlet of the pump as possible, with a mini-

mum distance of 5 pipe diameters).

2-1 If the pressure is lower than the figures given for the material, or null, this could be due to :

2-1-1A poorly adjusted relief valve, the valve setting is lower than the discharge pressure (tighten the set screw

or replace the spring after checking that the electric motor is suitably protected).

2-1-2The valve is not closed ; either the plunger has not returned to its initial position, or there is dirt on the

valve seat.

2-1-3 The pump is worn, this will also affect the suction capacity of the pump (cf 3-2-2 c).

2-2 If the pressure complies with the equipment data (pump speed and motor output) it is possible that :

2-2-1

The pressure required for the given installation to obtain the required flow rate is too high and the flow is

partially or totally circulating via the relief valve, or :

a. the height of the discharge is too great (reduce it by bringing the discharge tank to the level where the

pump is). If suction conditions are favourable, the pump can also be moved closer to the discharge tank.

b. that head losses are too high because :

- the piping is unsuitable (too many "bends", too long or the diameter is too narrow) for the process

conditions : Flowrate, Specific Gravity, Viscosity (this can change considerably with temperature).

Reduce the head losses by simplifying the circuit : reduce of the number of fittings, valves, elbows,

etc... Move the pump closer to the discharge tank or vice versa, if conditions permit. Increase the

diameter of the piping, etc... Reduce the product viscosity via heating. Reduce the flow, etc...

- of partially blocked piping (valve partially closed, tap partially shut, cloth obscuring flow, etc.).

2-2-2The discharge piping is completely blocked (valve fully closed, tap completely closed, cloth plugging flow,

full protection seal left by carelessness, etc...), in this case, all the liquid passes via the relief valve.

Page 68: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

33/35NT 1012-C00 11 13 Pump A18 A e

11. TROUBLESHOOTING (continued)

3 MEASURING THE VACUUM PRESSURE (as close as possible to the pump inlet, inlet side).

3-1If the vacuum is high, e.g. higher than or equal to 6 to 7 metres WC (0.6 to 0.7 bara i.e. about 45 or

50 cm of mercury), this can result in pump noise. The cause could be :

3-1-1

a. the suction lift is too high (reduce it by taking the pump down closer to the level of the liquid)

b. the dynamic suction losses are too high :

1. cf 2-2-1 b

2. the inlet piping orifice is too close to the bottom of the tank.

3-1-2 The inlet piping is completely blocked (valve, tap, filter, cloth, full seal forgotten, etc.)

3-1-3

The liquid vapour pressure is too high (or has become too high following, for example, a change of tem-

perature). Bring the pump closer to the level of the liquid, install the pump closer to the feed or cool the

liquid to reduce the vapour pressure.

3-2

If the vacuum is low, for example, less than 3 metres WC (i.e. about 20 cm of mercury), check for leaks

on the inlet pipe, isolate the pump from the inlet piping (by closing the valve nearest the pump or by inser-

ting a full flange seal) and measuring the vacuum once again.

3-2-1

If the vacuum is high with the isolating valve closed on suction line, e.g. higher than or equal to 6 or 7

metres WC (i.e. about 45 to 50 cm of mercury), the pump is not the cause :

a. there must be an air inlet upstream of the pump isolating valve.

b. the liquid vapour pressure is or has become too elevated due to a change of temperature (cf 3-1-3).

3-2-2

If the vacuum is low or non-existent, the reason could be :

a. that the valve is not closing properly, due to dirt on the valve seat.

b. air is entering the pump (check the front cover seals, flanges, etc...)

c. the pump is worn and the internal tightness is out of specification (the piston bushings are worn, worn

piston and cylinder, broken piston wear compensation springs, worn partition, broken shaft).

ABNORMAL HEATING OF BEARINGS

4 This heating can be caused by :

4-1 - excessive tension in the transmission (belt or chain) on the pump shaft.

4-2- excessive pulling on the pump flanges by the piping (in this case, it must have been necessary to force

the piping into position to connect it to the pump).

4-3- poor alignment of the pump - due for example to 4-2 (the pump is partially or totally uncoupled, the

pump shaft and drive shaft are not aligned with each other).

4-4- inadequate anchoring of the pump unit leading to deformation of the chassis (make sure that the chas-

sis is clear of the ground except for the 3 anchoring points).

4-5 - seizing of the bushings (cured product preventing lubrication and cooling, excess power, etc...).

4-6- running in period for new bearings. The temperature should return to normal values after a few operating

hours.

LEAKING SEALS

5

The seal may leak if :

a. it was damaged during assembly (scratching on the shaft), damage to ‘O’rings in seal,

b. it is incompatible with the product (chemical and mechanical aggression / abrasion of ‘o’ rings and seal faces),

c. it is worn through normal use.

6The shaft is worn at the seal or does not rotate correctly due to poor alignment, excessive tension on the

transmission belts, chains, etc...

Page 69: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

34/35NT 1012-C00 11 13 Pump A18 A e

11. TROUBLESHOOTING ( continued)

ABNORMAL NOISES

These noises can be caused by hydraulic and mechanical sources. They can be distinguished by the fact

that only the former disappear (or at least lessen) when air is allowed into the inlet pipe.

7 HYDRAULIC NOISES

These noises can come from insufficient product being supplied to the pump, or :

7-1- the rotation speed is too high for the installation conditions (increase of viscosity due to a change of

product or a reduction of temperature, etc.).

7-2- that the suction head is too high or has become too high due to excessive head losses following clog-

ging of the piping or filter, a change of viscosity of the liquid, etc.,

7-3 - an increase of the vapour pressure with a rise of temperature.

8 MECHANICAL NOISES

These can stem from :

8-1- the relief valve knocking on the seat when the discharge pressure is close to the relief valve adjustment

pressure (turn the adjustment screw after making sure that the electric motor is suitably protected).

8-2- abnormal stress on the pump : the transmission is pulling on the shaft, pulling on the flanges by the

piping.

8-3 - a broken part or foreign body has entered the pump.

EXCESS POWER CONSUMPTION

9 The most spectacular event occurs when a diesel engine stalls or the power to an electric motor is shut off.

9-1

If this incident occurs when closing the discharge line, the cause may be :

a. the relief valve is assembled back to front.

b. the relief valve is adjusted too tight.

c. the motor protection is adjusted too low or wrong circuit breaker have been fitted.

9-2

If the incident occurs during operation, the cause could be :

a. an inadequate motor (in this case, the discharge pressure complies with what was expected).

b. head losses higher than expected - following higher viscosity or specific gravity than planned initially

(in this case, the discharge pressure is higher than that planned. The pressure can be reduced by

loosening the relief valve adjustment screw - the flow is decreased).

c. excessive speed of rotation.

d. a fault of the equipment (faulty alignment, deformation of the chassis, stress exerted by the piping on

the flanges, seizing, etc.).

Excessive consumption of electricity can also be due to a poor motor connection (e.g. a 3 phase motor

operating on 2 phases).

Page 70: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

35/35NT 1012-C00 11 13 Pump A18 A e

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1/2

12. CERTIFICATE OF CONFORMITY

Page 71: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

A31 A pump

INSTALLATION

OPERATION

MAINTENANCE

INSTRUCTIONS 1012-D00 e

Section 1012

Effective November 2013

Replaces September 2013

Original instructions

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

Page 72: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

2/35NT 1012-D00 11 13 Pump A31 A e

ECCENTRIC PISTON PUMPMOUVEX PRINCIPLE

SAFETY, STORAGE, INSTALLATION AND MAINTENANCE INSTRUCTIONS

MODEL : A31 A

Definition of safety symbols

This is a SAFETY ALERT SYMBOL.

When you see this symbol on the product, or in the manual,

look for one of the following signal words and be alert to the

potential for personal injury, death or major property damage.

Warns of hazards that WILL cause serious personal injury,

death or major property damage.

Warns of hazards that CAN cause serious personal injury,death or major property damage.

Warns of hazards that CAN cause personal injury or propertydamage.

NOTICEIndicates special instructions which are very important andmust be followed.

DANGER

WARNING

CAUTION

TABLE OF CONTENTS Page

1. GENERAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31.1 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 Codification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.3 Identification and pump marking . . . . . . . . . . . . . . . . .4

2. GENERAL SAFETY INFORMATIONS . . . . . . . . . . . . . . . .53. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.1 Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.2 Installation design . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3 Installation and pump protection . . . . . . . . . . . . . . . . . .7

3.4 Hoisting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.5 Unit assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4. USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94.1 Noise level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.3 Operation without any pumped product . . . . . . . . . . .10

4.4 Shutting down the pump . . . . . . . . . . . . . . . . . . . . . . .10

5. OPENING OF THE PUMP . . . . . . . . . . . . . . . . . . . . . . . .115.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.2 Reverse of main rotation direction . . . . . . . . . . . . . . .12

5.3 Cylinder - piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5.4 Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.5 Mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

5.6 Bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

5.7 Piston bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.8 Slide block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

5.9 Slide block shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.10 Slide block pads . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5.11 Piston rear seat . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.12 Relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.13 O-rings replacement . . . . . . . . . . . . . . . . . . . . . . . . .25

5.14 Stirrup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .276.1 Greasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.2 Checking of parts . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

7. PARTICULAR VARIANTS . . . . . . . . . . . . . . . . . . . . . . . .287.1 Pump with heating jacket . . . . . . . . . . . . . . . . . . . . . .28

8. STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288.1 Short duration (≤ 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.2 Long duration (> 1 month) . . . . . . . . . . . . . . . . . . . . .28

8.3 Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

9. SCRAPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

10. TECHNICAL CHARACTERISTICS . . . . . . . . . . . . . . . . .2910.1 Weight and center of gravity . . . . . . . . . . . . . . . . . .29

10.2 Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.3 Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

10.4 Operation limits and characteristics . . . . . . . . . . . . .29

11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .3212. CERTIFICATE OF CONFORMITY . . . . . . . . . . . . . . . . .35

Unit without suffix :

Differential pressure, for example, pressure difference between

equipment suction and discharge.

Unit with suffix "a" :

Absolute pressure.

Unit with suffix "g" :

Gauge pressure, given regarding to atmospheric pressure

(~101325 Pa, taken at 1 bar / 14,5 psi in this IOM).

PumpPdisPsuc

Pompe

Pasp Pref Example :

Psuc = -0,2 barg = 0,8 bara

Pdis = 8,8 barg = 9,8 bara

∆P = Pdis - Psuc = 9 bar

USED PRESSURE UNITS

These Instructions contains important information concerning the reception, the installation, the operation, the adaptation, the

dismantling, the maintenance and the disposal of the A31A pump.

These Instructions MUST accompany the pump. Read these whole instructions before using the pump.

If necessary, do not remove the warning and use label stickers that are found on the pump.

The information given in this document are based on the most recent data available at the time of its diffusion. MOUVEX keeps

the right to modify without prior notice information and illustrations contained in this document.

Page 73: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.1 Principle of operationPumps MOUVEX A II Series are volumetric pumps with

eccentric piston (following the MOUVEX™ principle).

When piston moves inside cylinder, drvien by eccentruc

shaft, it creates four chambers that increase and des-

crease, thus creating suction and discharge.

These chambers are moving two by two with a 180°

opposition, thus giving to fluid crossing the pump a cons-

tant flow rate.

3/35NT 1012-D00 11 13 Pump A31 A e

1. GENERAL DATA

suction port

discharge port

Page 74: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

1.2 Codification

1.3 Identification and pump marking

A31A ST VT BCA MSTTVT C 10

ConceptionST StandardEV Jacket

SealsVT FKMCVT FKM encapsulated FEP

FlangesBCA Flanges compatibles with old A SeriePN16 Flanges compatibles PN16PN20 Flanges compatibles PN20

Mechanical sealMSTTVT Mouvex Seal tungsten carbide / tungsten

carbide / FKMMSCSVT Mouvex Seal carbone / stainless steel / FKMMSTTCVT Mouvex Seal tungsten carbide / tungsten

carbide / FEP FKMMSCSCVT Mouvex Seal carbon / stainless steel / FEP

FKMPGSN Provided for normalized single mechanical

seal

Internal relief valveC Single2C DoubleET Stirrup

Internal relief valve springS Without spring (stirrup)3 3 bar6 6 bar9 9 bar10 10 bar

Serial number

Short description

(ex : A31A-ST-ST-VT-BCA-MSTTVT-C-10-)Year

Additional information (ex : ATEX marking)

4/35NT 1012-D00 11 13 Pump A31 A e

1. GENERAL DATA (continued)

Page 75: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5/35NT 1012-D00 11 13 Pump A31 A e

2. GENERAL SAFETY INFORMATIONS

WARNING

DO NOT PERFORM STARTUP WHEN THE

PUMP IS NOT COMPLETELY RISE AND ITS

PROTECTIONS WERE NOT REPLACED.

Do not operate

without guard

in place.

WARNING

DO NOT MAKE GETTING STARTED IN THE

ABSENCE OF PROTECTION AGAINST

OVERPRESSURE.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

DURING THE INSTALLATION AND MAINTE-

NANCE PROCEDURES, ALL ELECTRICAL

WORK MUST BE PERFORMED BY QUALI-

FIED PERSONNEL.

Dangerous voltage.

Can cause

injury and death.

WARNING

DISCONNECT THE ELECTRICITY SUP-

PLY BEFORE ANY MAINTENANCE

OPERATION.

Dangerous voltage.

Can cause

injury and death.

WARNING

RELEASE PRESSURE FROM THE SYSTEM

BEFORE ANY WORK ON THE INSTALLA-

TION.

Hazardous pressure

can cause

personal injury

or property damage.

WARNING

STOP THE PUMP AND PREVENT RESTAR-

TING, EVEN ACCIDENTALLY, BEFORE ANY

WORK ON THE INSTALLATION.

Do not operate

without guard

in place.

WARNING

USE THE APPROPRIATE MEANS OF

HANDLING TO THE WEIGHT OF THE PARTS.

The weight ot the parts can

be dangerous and may

provoke bodily injuries or

material damages.

WARNING

IF PUMPING HAZARDOUS OR TOXIC

FLUIDS, THE PUMP MUST BE PURGED,

FLUSHED AND CLEANED UP PRIOR TO

PERFORMING ANY SERVICE OPERATION.

Hazardous or toxic

fluids can cause

serious injury.

CAUTION

EXTERNAL SURFACES OF THE PUMP

CAN BE AT A TEMPERATURE LIABLE TO

CAUSE INJURY OR SEVERE DAMAGE.

Extreme heat can

cause injury or

property damage.

CAUTION

CONTROL THE PARTS TEMPERATURE

BEFORE ANY WORK ON THE INSTALLATION.

Extreme heat can

cause injury or

property damage.

CAUTION

CLEAN ALL PUMPED LIQUID FLOWS OR

LUBRICANT THAT COULD CAUSE A FALL.

Slippery lubricant.

Spills should be

cleaned up.

Page 76: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.1 ReceptionMOUVEX is not responsible for any material damage

resulting from transportation or unpacking.

On receipt, visually inspect the packaging to ensure it is

not damaged. If necessary, indicate the appropriate

reservations on the transport and send a registered letter

to the carrier within 48 hours (if possible accompanied by

photos).

When unpacking, check that the pump and any other

materials are not damaged. If necessary, send a registered

letter to the carrier within 48 hours (if possible accompa-

nied by photos).

The pump must be supplied by the following documen-

tation :

• Delivery note,

• Pump Instructions,

• If necessary, complementary Instructions (ex : ATEX),

• If necessary, Instructions materials provided with the

pump (ex : motor, sensors…).

3.2 Installation design

3.2.1 Pump

To obtain the service expected from a MOUVEX pump,

regarding both performance and longevity, it is vital that

the type of pump, its speed and the materials used for its

construction are determined as a function of the pump

output, its installation and operating conditions.

You can contact our Technical Services at any time to

ask for the information you require.

3.2.2 Piping

Suction pipe length

Length should be as short as possible.

Suction pipe diameter

Diameter must be at least equal to pump port diameter

and even more if required by pumping conditions.

Suction pipe configuration

Check tightness to avoid accidental air intake.

--------------------------------------------------------------------

Not recommanded

To be avoided if possible

Recommanded

L = 10 x Dminimum

R = 3 x D minimum

6/35NT 1012-D00 11 13 Pump A31 A e

3. INSTALLATION

Page 77: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Pipe alignment and supporting

Pump must not support piping nor endure stress resul-

ting from piping weight or dilatation effects. For latters,

expansion loops should be included.

Pipe equipment

• Place valves close to the pump to avoid draining pipe

during maintenance operations. Preferably select full

bore ball or butterfly valves.

Pressure connections on pump suction and discharge

are recommended for settings an controls.

Protect pump by using a MOUVEX prefilter on suction.

Make sure piping, vessels valves and other installation

devices are carefully cleaned before mounting.

• MOUVEX pumps are self priming. However, if line

emptying should be avoided and/or if suction lift is high,

a foot valve can be added.

• If pumped liquid presents a risk of in pipe solidification

and potential dilatation, low points on the pipe should

be avoided or equipped with drain valve.

• If installation is heated, it must be designed so that fluid

dilatation can evacuate through piping. Therefore fluid

contained in piping must be heated before fluid contained

in the pump. Also check that a heated pump is not iso-

lated by closed valves.

3.3 Installation and pump protection

Do not startup the pump if there is no protection against

overpressure.

The pump must be protected against excess pressure. It

can be delivered with a internal relief valve or a pressure

switch to carry out this function.

If pump is used in both directions, the pump must be

protected in both directions of operation.

3.3.1 Protection by integrated relief valve

NOTICE

Pump internal relief valve cannot be used to protect

the installation.

3.3.1.1 Internal relief valve operation

The compensated internal relief valve operates like a

valve, by automatically limiting the discharge pressure at

the value for which it is adjusted.

When the discharge pressure reaches the adjusted

pressure of the spring, the valve opens, thus permitting

the partial or total return of the liquid to the inlet side of

the pump.

When the discharge is closed, the compensated internal

relief valve is designed to generate a very small increase

of pressure, relative to the setting pressure, which means

that the motor will economically supply the necessary

additional power for specific working conditions.

It should be noted that the role of the internal relief valve

is limited to protecting the pump against accidental over-

pressure.

It is vital to provide an appropriate overload protection for

the drive, unless the model used can handle the increased

load due to maximum overpressure (pump sending its flow

through the internal relief valve with the spring tightened

to the maximum).

The double internal relief valve assembly consists of two

single internal relief valves in opposition. This protects

the pump in both directions of rotation without the need

for mechanical intervention. Operation on each direction

is identical as above. The operation of each direction is

identical to the above. The setting of this internal relief

valve must be performed for both directions of operation.

WARNING

7/35NT 1012-D00 11 13 Pump A31 A e

3. INSTALLATION (continued)

Page 78: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3.3.1.2 Internal relief valve orientation

Contrary to double internal relief valve designed for pro-

tect the pump in the two directions of rotation, the single

internal relief valve only protects the pump in one direc-

tion of operation. It is therefore imperative to check for

proper orientation before the first start of the installation

or after any modification in the pumping circuit or inter-

vention on the drive, by verifying that the cap 44827 is

located on the inlet side and reverse the mounting direc-

tion of the internal relief valve if necessary.

This control is not necessary in the case of a double

internal relief valve, protecting the pump in both directions

of operation.

To modify the mounting direction of the internal relief

valve, see § RELIEF VALVE.

3.4 Hoisting devicesUsing a lifting ring, fixed to the upper part of the pump,

to raise it.

• Pump with relief valve : threaded hole M10 on the

relief valve.

• Pump with stirrup : threaded hole M12 on the pump

main body.

Pump weight : see § OVERALL DIMENSIONS.

3.5 Unit assembly

3.5.1 Anchoring the pump units

The correct seating of the pump is vital for its efficient

operation and its longevity.

The surface must be resistant enough to absorb the

stresses due to the pump unit without deformation.

In the case where the unit is fastened by anchor lugs or

bolts, it must be carefully wedged to prevent any defor-

mation of the chassis when tightening the bolts.

Deformation of the chassis will cause stress prejudicial

to the pump and the drive device and put the coupling

out of true, thereby causing vibrations, noise and prema-

ture wear. Care must be taken so that the chassis is

clear of the ground, apart from the base plates.

The chassis is equipped with a ground connection that

must be used.

We recommend leaving an unoccupied space of about

50 cm, on either end of the chassis, to permit access to

the bolts fastening the pump, reduction gear and motor

together.

3.5.2 Coupling selection

NOTICE

Over 5 bar, the pump should be mounted with a double

coupling type.

3.5.3 Alignment of motor / pump and reduction

gearbox / pump shafts

Do not start the pump as long as it is not secured

and its protections not in place.

It is important to control the alignment of motor / pump

and reduction gearbox / pump shafts at every step of

installation in order to ensure that none of these steps

generates stress on the pump unit or the pump itself :

• after fastening on foundations,

• after fastening the piping,

• after the pump has operated at normal operating

temperature.

SuctionDischarge

WARNING

8/35NT 1012-D00 11 13 Pump A31 A e

3. INSTALLATION (continued)

Page 79: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

The 3 figures below show the operation clearly.

Refer to manufacturer’s instructions to determine the

acceptable values.

NOTICE

Do not rely on the flexible coupling to compensate

for misalignment.

3.5.4 Motorisation

The engine choices must be made in order to comply

with the conditions of the pump (speeds, absorbed

power).

The direction of rotation of the pump unit must be chec-

ked before the first startup and after any work on the

gear motor that may have affect its rotation direction. To

do this, follow the instructions in § COMMISSIONING -

DIRECTION OF ROTATION .

3.5.4.1 Electric motors

Refer to manufacturer’s instructions for the motor instal-

lation.

A particular attention should be given to the following

instructions :

• check that the supply voltage matches the indica-

tions on the motor rating plate,

• comply with the wiring diagram, make sure the

wires are rated for the power and take care with the

contacts which must be thoroughly tightened,

• the motors must be protected by appropriate circuit

breakers and fuses,

• connect the regulatory ground connections.

3.5.4.2 Diesel engine drive

Refer to manufacturer’s instructions for the motor instal-

lation.

Make this check for 4 points:up - down - left - right

Correct

Out-of-parallelism

Angular defect

9/35NT 1012-D00 11 13 Pump A31 A e

3. INSTALLATION (continued)

4.1 Noise levelThe sound level of a pump is greatly influenced by its

conditions of use. Cavitation and pumping products with

high gas contents generally increases the sound level.

Under the following pumping conditions :

• excluding cavitation

• suction pressure ......................... 0 barg

• differential pressure .................... 10 bar

• speed of rotation......................... 400 rpm

• pumped product viscosity........... 10 cSt.

The sound level reached for a A31A pump in good

conditions without the drive is less than 80 dB(A).

With no particular installation design being retained,

sound level has been measured at 1 m from pump sur-

face and 1.6 m. above ground. Maximum value measu-

red from discharge port was 76 dB(A).

4.2 Commissioning

4.2.1 Cleaning

The pumps are delivered well greased, it may be neces-

sary to clean them before putting them in use.

The cleaning can be done either by circulating a appro-

priate liquid, or by removing the pump front cover and

carefully cleaning the internal parts (see § OPENING OF

THE PUMP).

4.2.2 Direction of rotation

The MOUVEX pump is reversible; this allows it to always

circulate the liquid in the desired direction by choosing

the corresponding direction of rotation. In standard ver-

sion, the two directions of rotation do not allow achieving

the same hydraulic performance and a direction of rota-

tion should be privileged for normal operation.

To reverse the main rotation direction of the pump, see

§ REVERSE OF MAIN ROTATION DIRECTION .

For applications requiring the two directions of rotation

provide the same hydraulic performance, contact our

Technical Services.

4. USE

Page 80: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

10/35NT 1012-D00 11 13 Pump A31 A e

The suction and discharge sides are defined as follows :

when an observer faces the shaft, if rotation takes place

clockwise, the intake is on the left; on the contrary if the

rotation is anticlockwise, the intake is on the right.

The reverse of the direction of rotation should be done

after a full stop of the pump.

Controlling the direction of rotation of the motor :

This control must be done without pump product and

suction and discharge circuits vented to avoid genera-

ting unexpected pressure (at suction for example).

Start up vacuum to control the connections are good and

check the direction of rotation corresponds to the direc-

tion of inlet and outlet installation.

4.2.3 Starting-up

Before starting-up, make sure that the pumping condi-

tions are met. The circuit must be in one of its pumping

configurations with corresponding valves open and

especially the inlet valve.

NOTICE

With a product requiring heating, the product must be

brought to its pumping temperature before starting up

the pump.

See also the recommendations in § INSTALLATION

DESIGN - PIPING).

4.2.4 Surface temperature

Depending on the operating conditions (temperature of

the pumped liquid, differential pressure ...), the use of

the pump can generate high surface temperatures.

When these temperatures exceed 80°C, protective mea-

sures must be implemented, like :

• reduction of contact with heated surfaces ;

• warning to operators.

These measures must be taken from 68°C in case of

reduced space around pump, possibly leading to a longer

contact with pump surface.

4.3 Operation without any pumped productPumps using the MOUVEX principle can be run dry,

without any pumped product in the pump (for example

during the priming) for a period of five minutes, without

causing damage.

Additional restrictions may apply to certain applications.

If necessary, refer to additional instructions supplied with

the pump (ex : ATEX additional instructions).

4.4 Shutting down the pumpWhen shutting down the pump, we recommend waiting

for the pump to stop completely before closing the val-

ves, especially the inlet valve.

If the pump circuit is to be located between valves and/or

a non-return valve, you need to take account of the

variations in temperature that can lead to contraction of

the liquid in the circuit. In this case, you need to provide

some means of compensating for the contraction (see §

INSTALLATION DESIGN - PIPING for examples of possible

measures). The opening pressure for this valve should

be compatible with the permitted pressure for the other

components in the circuit.

In the case of liquids containing particles settling on

shut-down, it is necessary to make sure the consistency

of the deposit will not impede restarting the pump.

CAUTION

4. UTILISATION (continued)

Page 81: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1 Preparation

5.1.1 Necessary tools

Reverseof

mainrotatio

ndirection

Cylinde

rpiston

Bushings

Mecha

nicalseal

Bearing

Piston

bearing

Slideblock

Slideblockshaft

Slideblockpa

ds

Piston

rear

seat

Shaft

Internalreliefvalve

Stirrup

16 mm Open end and socket wrenches x x x x x x x x x x x x

17 mm Open end and socket wrenches x x x x x x x x x x x

18 mm Open end and socket wrenches x x

24 mm Open end and socket wrenches x x

27 mm Open end and socket wrenches x x x x x x x x x x x x x

Adjustable open end wrench 44 mm x

Allen wrench size 2,5 x

Allen wrench size 8 x x x x x

Allen wrench size 10 x

Flat screwdriver x x x

Mallet x

Bearing puller (bore Ø 40 mm depth 79 mm) x

Pin punch Ø 2,5 mm x

Pin punch Ø 4 mm x

Pin punch Ø 8 mm x x x x x x x x

Block (see § CYLINDER PISTON) x x x x x x x x

Cylinder Ø 70 x

Tube outside Ø 71 x

Press x x

Medium thread lock type Loctite® 243* or equivalent. x x x x x x x x x x xTightness product for flat surfaces :

applications on solvents :GEB oil® or equivalent ;

other applications :Loctite® 574* or equivalent

x

Fixing product type Loctite® 640* or equivalent x

Flat file x

Sand paper (n°320) x x

Stud remover M10 x x

Stud remover M16 x

Bearing grease (see § MAINTENANCE) x x x x

For setting or control operationFor spare parts replacement operation

11/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP

* Loctite® est une marque déposée.

Page 82: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.1.2 Assembly torques

M6.......................................5 ±2 N.m

M8 x 125.............................5 ±2 N.m

M10 (reference 12409) .......23 ±6 N.m

M10 (studs).........................35 ±8 N.m

M10 (others) .......................20 ±10 N.m

M16.....................................45 ±8 N.m

G3/8....................................3,5 ±1 N.m

G1 conical...........................6 ±2 N.m

5.1.3 Pump preparation

Before any intervention on the pump :

If pumping hazardous or toxic fluids, the pump must

be purged, flushed and cleaned up prior to perfor-

ming any service operation.

Stop the pump and prevent restarting, even acciden-

tally, before any work on the installation.

Disconnect the installation.

Relieve the system pressure.

Control the parts temperature.

Drain the pump.

Make sure the isolation valves, if any, are closed before

pulling out the drain plug 12434 and its seal 12412.

Remove the seal 12412 and check its condition. Replace

it if necessary.

Once the pump is drained, fit the plug 12434 and its seal

12412.

5.2 Reverse of main rotation directionDisconnect the pump from the engine and remove the

coupling.

• Coupling supplied by MOUVEX

Remove the locking screw, then remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Remove the screws 12706 and theirs washers 12721.

Without remove the parts from the main body, rotate

bearing cover 12705 – bearing cage 12701 subassembly

to obtain the desired position (drain holes must remain

in vertical position ; do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

WARNING

Drain hole

12/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 83: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If bearing cage 12701 remain stucked to the main body

12101, apply the following procedure :

• Remove the key 12508.

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 into the threaded holes of

the bearing cage 12701. Keep tightening screws 12706,

with balanced tightening between the two screws until

parts separate.

• If necessary, clean the bearing 12703 and fill it with

grease.

• Refit the bearing cover with its screw 12706A.

Positions détail

5.2.1 Pump with single relief valve

Reverse internal relief valve position as follow.

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Position the seals 44858 in their grooves.

Turn the internal relief valve through 180° (the internal

relief valve cap 44827 must be oriented suction side).

Take care not to pinch the seal 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic was-

hers 44859A. Tighten the screws making sure tightening

is balanced between the two screws.

Main clockwise direction of rotation

Main anticlockwise direction of rotation

SuctionDischarge

13/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 84: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.2.2 Pump with double relief valve

Check that pressure settings correspond to requirements

for each direction of rotation.

If necessary, proceed to settings (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

5.3 Cylinder - piston

5.3.1 Dismantling

Dismantling of front cover

Remove the front cover bolts (screw 12409, nuts

12409A and washers 12409E - 12409F).

Remove the front cover set (12401-12403-12414-

12415-12416-12417-12420-12310-12311) by progressi-

vely separating it from the pump body. If necessary, use

the threaded holes on the front cover by screwing pro-

gressively two screws 12409.

Remove the seal 12403 and check its condition.

Replace it if necessary.

Check the front cover bushing 12415 condition. Replace

it if necessary.

Dismantling of piston

Remove the pin 12524.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Remove the sleeve 12521.

Remove the piston 12301O by softly pulling on slide block

12312. If necessary, use a screwdriver as a lever to pull

it away from cylinder 12201 (be careful not to damage

friction faces).

Check piston 12301O condition. Replace it if necessary.

Check piston bushing 12303 condition. Replace it if neces-

sary.

165

14/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 85: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of cylinder

Remove the screws 12106, the nuts 12115 and theirs

washers 12207-12116.

Separate the cylinder 12201 from the main body 12101

with a mallet and remove the seal 12104 and check its

condition. Replace it if necessary.

Check the cylinder 12201 condition. Replace it if necessary.

CAUTION

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

5.3.2 Reassembly

Assembly of cylinder

Clean the seal housing 12104.

Fit the seal 12104 in the main body 12101.

Applying a sealing product between the main body 12101

faces and the cylinder 12201 (see § PREPARATION).

Fit the screws 12106, the nuts 12215 with theirs new rid-

ged conic washers 12207 and 12116.

Take care not to pinch the seal 12104 during the assembly.

Assembly of piston

Lubricate the friction surfaces of the piston 12301O with

a product compatible with the pumped liquid.

Fit the piston 12301O on its piston bearing 12503.

Fit he sleeve 12521 on the shaft 12501.

Fit the pin 12524 (until it cannot move any forward) taking

care not to damage the sleeve.

NOTICETo avoid damaging mechanical seal during this ope-

ration, shaft must be supported by a block (select a

non-hard material to avoid damaging the sleeve).

Sealing product application zone

165

15/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 86: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of front cover

Clean the seal housing 12403.

Fit the seal 12403 on the cylinder 12201.

Orientate the slide block 12312 to make it pass between

the pads 12404.

Fit the front cover 12401 on the cylinder 12403.

Take care not to pinch the seal 12403 during the assembly.

Take care not to damage the bushing 12415 during the

assembly.

Fit the screws 12409 and nuts 12409A with theirs new

ridged conic washers 12409E and 12409F.

5.4 Bushings

5.4.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Piston bushing

Remove the bushing 12303 of the piston 12301O with a

press and a cylinder.

Front cover bushing

Remove the screws 12417 and theirs washers 12420.

Remove the set front cover bearing - bushing (referen-

ces 12414 - 12415 - 12416) from the front cover 12401.

Remove the seal 12416 and check its condition.

Replace it if necessary.

Remove the bushing 12415 of front cover bearing 12414

with a puller.

16/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 87: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.4.2 Reassembly

Piston bushing

Insert the bushing 12303 in the piston 12301O with a

press and a cylinder until the faces of the bushing and

the piston are aligned (on both sides).

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Front cover bushing

Orientate bushing chamfer on the outer side (see sche-

me above).

Insert the bushing 12415 in the front cover bearing

12414 using a press and a cylinder until bushing 12415

and front cover bearing 12414 faces are aligned.

NOTICE

Do not add glue or grease.

NOTICE

Effort must be made only on metal liner and not on the

carbon bushing.

Clean the O-ring housing 12416.

Fit the O-ring 12416 on the front cover bearing 12414.

Fit the screws 12417 and theirs new ridged conic was-

hers 12420 with medium thread lock.

Follow the instructions in § CYLINDER-PISTON to finish the

reassembly.

5.5 Mechanical seal

5.5.1 Type

The A31A pumps can be equipped with :

• standardized mechanical seals Ø 40 (short types

standardized mechanical seals - K - according to

EN 12756),

• MOUVEX mechanical seals Ø 40.

5.5.2 Operation

The shaft drive the one piece rotating part in a rotary

motion.

The stationary seal face is fixed on the pump body.

Sealing is done :

• Static, by the O-rings located between the rotating

part and the shaft and between the stationary seal

face and the pump body.

• Dynamic, by the contact surfaces between the rota-

ting part and the stationary seal face.

Sealing is therefore done as a function of the condition

of these contact surfaces and the seals.

5.5.3 Dismantling

Preparation

Disconnect the pump from drive and remove the coupling

and the key 12508.

• Coupling supplied by MOUVEX

Remove the locking screw, remove the coupling

and check its condition. Replace it if necessary.

• Other coupling

Refer to manufacturer’s instructions.

Follow the instructions in § CYLINDER - PISTON.

17/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 88: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Dismantling of bearing cover

Note the position of the screw 12706A (right or left).

Remove the screws 12706 and theirs washers 12721.

Remove from the main body 12101 the set shaft - bearing

cover - bearing cage - seal - bearing - mechanical seal -

piston bearing (references 12501 - 12503 - 12504 -

12511 - 12600 - 12627 - (12641 - 12642) - 12701 -

12703 - 12704 - 12705 - 12706A - 12707 - 12708 -

12717 - 12733).

Remove the screw 12706A.

Refit the bearing cover 12705, taking care not to dama-

ge the lip seal 12707 on the key housing edges.

Check the lip seal 12707 condition. Replace it if neces-

sary.

If bearing cage 12701 would remain stucked on main

body 12101, follow the following procedure :

• Note the position of the screw 12706A (right or left).

• Remove the screw 12706A.

• Remove the bearing cover 12705 taking care not to

damage the lip seal 12707 on the key housing edges.

• Position two screws 12706 in the bearing cage

12701 threaded holes. Keep tightening the screws

12706, with balanced tightening between the two

screws until parts separate.

NOTICE

Once bearing cover 12705 is removed, shaft is hold

only be bearing and may fall which could damage

the mechanical seal. To prevent this, keep holding

shaft 12501 and bearing cage 12701 to limit ball joint

movement, for instance by putting it vertically).

NOTICE

Once bearing cover 12705 is removed, the bearing is

no longer protected against impurities. To prevent

any pollution of bearing grease, cover bearing with

a protection sheet.

Dismantling of the bearing cage

Remove the seal 12717 and check its condition.

Replace it if necessary.

Remove the ring 12704.

Remove the shaft 12501 from the set bearing cage -

bearing (references 12701 - 12703 - 12733 - 12627 and

stationary seal face mechanical seal), taking care not to

damage the Nilos seal 12733.

Dismantling of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Dismantling of the mechanical seal rotating part

Remove the rotating part 12697 (mechanical seal driver

12641 and its screws 12642 can be left in place) from

shaft 12501 taking care not to scratch it.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

18/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 89: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

• Dismantling of the mechanical seal stationary seal

face

Remove the stationary seal face 12604 and its seal

12605.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Dismantling of mechanical seal (other)

Refer to manufacturer’s instructions.

5.5.4 Reassembly

Reassembly of MOUVEX mechanical seal

NOTICE

Mechanical seal components must never be put on

friction faces without protection sheets.

• Assembly of mechanical seal stationary seal face

If necessary, clean the bearing 12703 of its grease.

Clean the seal housing in the bearing cage 12701.

Fit the seal 12605 in the bearing cage 12701.

Fit the stationary seal face 12604 in the bearing cage

12701, taking care of aligning pin 12627 located in

the bearing cage 12701 with groove on the stationary

seal face 12604.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

• Assembly of mechanical seal rotating part

Check shaft 12501 surface condition. Rub it down with

thin sand paper if there are scratches on seal rotating

part O-ring place. In particular, it must be check that

there are no scratches parallel to shaft axle.

If necessary, fit the mechanical seal driver 12641 and

its screws 12642 on the shaft 12501, and position it

so that it cannot move any forward. Fit the screws

12642 with medium thread lock.

To reduce friction, wet with water or alcohol surfaces

on which O-rings will slip during assembly.

If seal includes FEP coated FKM O-rings, use moun-

ting cone supplied with mechanical seal.

Fit the rotating part 12697 aligning ergots driver 12641

grooves.

If necessary, clean friction face with a clean, soft

cloth. Caution not to scratch friction face.

Reassembly of mechanical seal (other)

Refer to manufacturer’s instructions.

Fit the mechanical seal rotating part on the shaft 12501

and position it so that it cannot move any forward.

NOTICE

If seal presents a large inlet chamfer, position seal

manually so that its end correspond to the stop.

19/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 90: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Assembly of the bearing cage

Fit the set bearing cage (12701 - 12703 - 12733 - 12627

and mechanical seal stationary seal face) on the shaft

12501.

NOTICE

As long as bearing cover 12705 is not mounted,

shaft is hold only be bearing and may fall which

could damage the mechanical seal. To prevent this,

keep holding shaft 12501 and bearing cage 12701 to

limit ball joint movement, for instance by putting it

vertically.

Fit the ring 12704 on the shaft 12501.

If necessary, fill the bearing 12703 with grease (see §

MAINTENANCE).

Clean the seal housing 12717.

Fit the seal 12717 on the bearing cage 12701.

Assembly of bearing cover

If necessary, fit the lip seal 12707, lip orientated outside

in the bearing cover 12705.

Fit the bearing cover 12705 in the bearing cage 12701.

Fit the screw 12706A.

Insert shaft assembly in the main body 12101 taking care

to :

• position the screw 12706A on same side as before

dismantling. When changing the direction of rotation of

the pump, see § REVERSE OF MAIN ROTATION DIRECTION ;

• position bearing cage 12701 drain holes in vertical

position (do not confuse with pin hole).

Fit the screws 12706 and theirs new ridged conic was-

hers 12721 with medium thread lock.

If necessary, grease the bearing (see § GREASING).

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

5.6 Bearing

5.6.1 Dismantling

Follow the instructions in § MECHANICAL SEAL.

After removing the bearing cage 12701, remove the

bearing 12703 of the cage 12701 with a press.

5.6.2 Reassembly

Clean the bearing housing 12705.

Fit the Nilos seal 12733 in its housing.

Fit the bearing 12705 in the bearing cage 12701 by pres-

sing on its outer ring with a press and a tube.

Follow the instructions in § MECHANICAL SEAL to finish the

reassembly.

Drain hole

20/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 91: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.7 Piston bearing

5.7.1 Dismantling

Follow the instructions in § MECHANICAL SEAL to remove the

set shaft - bearing cover - bearing cage - seal - bearing

- mechanical seal - piston bearing (references 12501 -

12503 - 12504 - 12511 - 12600 - 12627 - (12641 -

12642) - 12701 - 12703 - 12704 - 12705 - 12707 - 12708 -

12717 - 12733).

Remove the screws 12511.

Remove the springs 12504 and check their condition.

Replace them if necessary.

Remove piston bearing 12503.

5.7.2 Reassembly

Fit piston bearing 12503.

Fit the springs 12504 in theirs housings.

Fit the screws 12511.

5.8 Slide block

5.8.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nut 12309 and its washer 12308.

Remove the slide block 12312 and its bushing 12306

and check their condition. Replace them if necessary.

5.8.2 Reassembly

Fit the slide block bushing 12306 and the slide block

12312.

Fit the nut 12309 and its washer 12308.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

21/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 92: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.9 Slide block shaft

5.9.1 Dismantling

Follow the instructions in § SLIDE BLOCK.

Heat the slide block shaft 12304 to destroy fixing product

taking care not to twist the piston.

Remove the slide block shaft 12304.

Check parts temperature before dismantling.

5.9.2 Reassembly

Clean threading in piston 12301.

Fit the slide block shaft 12304 until it cannot move any

forward with fixing product. Groove must be on piston side.

Adjust slide block shaft 12304 to piston 12301 face by

filing section raising above piston face. Do surface finish

with thin sandpaper. Piston face must not show scratches.

Follow the instructions in § SLIDE BLOCK to finish the reas-

sembly.

5.10 Slide block pads

5.10.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the nuts 12408 and theirs seals 12407. Check

seals condition and replace them if necessary.

Remove the slide block pads 12404 with theirs studs

12405 and theirs seals 12406. Check parts condition and

replace them if necessary.

5.10.2 Reassembly

Fit the studs 12405 in the slide block pads 12404.

Fit the seals 12406 on the studs 12405 taking care not

to damage the seals 12406 on studs 12405 threading.

Fit the slide block pads sets (references 12404 - 12405

- 12406) in the front cover 12401.

Fit the nuts 12408 with theirs seals 12407.

Follow the instructions in § CYLINDER - PISTON to complete

reassembly.

Pump with heating jacket :

Remove the plugs 12462 to reach the nuts 12405.

WARNING

22/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 93: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.11 Piston rear seat

5.11.1 Dismantling

Follow the instructions in § CYLINDER - PISTON.

Remove the piston rear seat 12311 by rotating it to release

pins 12314 from their grooves.

Remove the spring 12310. Check its condition and replace

it if necessary.

Caution: Spring is always slightly pressed.

5.11.2 Reassembly

Position the spring 12310 in the front cover 12401.

Fit the piston rear seat in the front cover 12401 by rotating

it to engage pins 12314 in their grooves.

Follow the instructions in § CYLINDER - PISTON to finish the

reassembly.

5.12 Relief valve

5.12.1 Opening pressure setting

Before any modification on setting, check :

• That there is a pressure measurement mean on

pump discharge ;

• Maximum allowable pressure for discharge installa-

tion. This pression corresponds to the lowest maxi-

mum allowable pressure among all discharge

installation components.

During setting operation, operator must make sure

never exceeding discharge installation maximum

pressure.

Loosen the nut 44835.

Turn the adjusting nut 44834 clockwise to increase dis-

charge pressure, anticlockwise to reduce it.

Once setting is done, tighten counternut 44835.

Setting is correct when flow rate is conform to expecta-

tion and when motor endures without incident absorbed

power peak when discharge is closed. This is how relief

valves of complete pumping sets are set, basing on

information given to our technical services.

Pumps supplied bare shaft are delivered with a standard

setting that should be adjusted depending on exact

installation and operation conditions, following procedure

above.

WARNING

WARNING

23/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 94: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.12.2 Spring replacement

5.12.2.1 Dismantling

Remove the screws 44859 and theirs washers 44859A.

Remove the seals 44858 and check their condition.

Replace them if necessary.

Remove relief valve and put it on a workbench or a flat

and clean surface.

Set relief valve opening pressure to its minimum (see §

RELIEF VALVE - OPENING PRESSURE SETTING).

Keep relief valve vertical for the rest of the operation.

Progressively untight screws 44856.

Caution: Spring is always slightly compressed.

Remove the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Remove the seal 44807 and check its condition.

Replace it if necessary.

Remove spring 44824 from relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

5.12.2.2 Reassembly

Keep relief valve vertical during operation.

Introduce spring 44824 in the relief valve (and its guide

44829 if spring is 3 bar one; and its spacer 44828 if

spring is a 10 bar one).

Check position of valve 44823. It must rest flat on its seat

and move freely in its housing.

Position the seal 44807.

Put back the internal relief valve cap 44827 with its

adjusting screw set (references 44825 - 44826 - 44826A

- 44831 - 44834 - 44835 - 44837).

Tighten screws 44856 keeping tightening balanced bet-

ween the screws.

NOTICE

It is necessary to press the spring before being able

to tighten.

Position the seals 44858 in their grooves.

Put back the relief valve on the pump respection correct

orientation (the internal relief valve cap 44827 must be

on suction side).

Take care not to pinch the seals 44858 during the assem-

bly.

Fit the screws 44859 with theirs new ridged conic washers

44859A. Tighten the screws keeping tightening balanced

between the screws to keep relief valve in correct position.

Set spring pressure at required value (see § RELIEF VALVE -

OPENING PRESSURE SETTING).

WARNING

24/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 95: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.13 O-rings replacement

5.13.1 Dismantling

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT.

Dismantle the adjusting screw set as follows.

Remove the pin 44831.

Remove the nut 44834 and its nut 44835.

Remove the adjusting screw 44826 and its subassembly

(references : 44825 - 44826A - 44837).

Remove the seal 44837 and check its condition.

Replace it if necessary.

Remove the plug 44857.

Remove the seal 44850 and check its condition.

Replace it if necessary.

5.13.2 Reassembly

Position the seal 44850.

Refit the plug 44857.

Fit the spring guide 44825 on the adjusting screw

44826.

Position the washer 44826A and the seal 44837 on the

adjusting screw 44826.

Fit the set in the cap 44827.

Fit the nut 44835 and the nut 44834.

Fit the pin 44831 in the adjusting screw 44826.

Follow the instructions in § RELIEF VALVE - SPRING REPLA-

CEMENT to finish the reassembly.

25/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Spring 6 bar

Spring 9 bar

Spring 10 barSpring 3 bar

Page 96: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5.14 Stirrup

5.14.1 Dismantling

Remove the screw 44859 and its washer 44859A.

Remove stirrup 44867.

Remove the stirrup plugs 44865.

Remove the seals 44858 and check their condition.

Replace them if necessary.

5.14.2 Reassembly

Position the seals 44858 in their grooves.

Refit the stirrup plugs 44865 on the pump.

Take care not to pinch the seals 44858 during the assem-

bly.

Position stirrup 44867.

Fit the screw 44859 with its washer 44859A.

26/35NT 1012-D00 11 13 Pump A31 A e

5. OPENING OF THE PUMP (continued)

Page 97: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

6.1 GreasingExcept for special cases, the MOUVEX pump only requi-

res lubrication of the shaft inlet bearing.

Use a grease for ball bearings.

Lubrication must be done every 1,000 hours of operation

or at least once a year. or in case of accidental soiling of

the grease.

In this case, clean the bearing and its housing before

replacing the grease.

The quantity of grease to be added must not exceed 17 cm3.

For pumps operating at high temperatures (in principle

from 100°C upwards) use a grease with a high drop point.

Preference should be given to lubricants insoluble in the

product pumped and, in the case of hot products, lubri-

cants that maintain good viscosity at the operating tem-

perature.

The other elements of the pump unit (motor, reduction

gear) should be maintained in conformity with their spe-

cific technical instructions.

6.2 Checking of partsDefects listed below require the replacement of parts.

6.2.1 Bushings (12303 - 12415)

Ø interior higher than :

- piston bushing 12303 ...............56,7 mm

- front cover bushing 12415 .......41,1 mm

6.2.2 Cylinder and piston (12201 - 12301)

thickness rating less than :

- piston 12301.............................10,4 mm

- cylinder 12201..........................98,2 mm

NOTICE

Proper pumping characteristics require a piston and

cylinder couple with paired dimensions. Therefore

replacement of piston or cylinder requires replace-

ment of the piston/cylinder couple.

6.2.3 Slide block (12312)

- rating on flat less than 39,86 mm

- inside Ø higher than Ø 25,05 mm

6.2.4 Slide block bushing (12306)

- outside Ø less than 24,90 mm

6.2.5 Slide block pads (12404)

- thickness rating less than 11,45 mm

6.2.6 Piston bearing (12503)

- outside Ø less than 54,65 mm

6.2.7 Sleeve (12521)

- outside Ø less than 39,70 mm

6.2.8 Shaft (12501)

- Ø under the lip seal surface less than 34,85 mm

- Ø under the mechanical seal O-ring surface less than

39,95 mm

6.2.9 Springs (12310 – 12504 – 12703A)

- non-rectilinear spring axis

- spring 12310 : free height less than 52 mm

- spring 12504 : free height less than 24 mm

6.2.10 Seals

- scratch

- break

- holes

- permanent deformation of the seal

6.2.11 Bearing (12703)

- Life time exceeded (lifetime : 20 000 hours)

- Feel able hard point during manual bearing rotation

- Unusual noise during pump operation (squeaking…)

NOTICE

The lifetime for the bearing is a theoretical lifetime

calculated according to the standard ISO 281 recom-

mendations.

This calculation was performed with the values of

speed and acceptable maximal differential pressure

and for a acceptable failure rate of 10%.

27/35NT 1012-D00 11 13 Pump A31 A e

6. MAINTENANCE

Page 98: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

If necessary, refer to § OPENING OF THE PUMP for pump disas-

sembly.

7.1 Pump with heating jacketThe jacketed front cover 12401 permits the circulation of

steam or liquid.

The plug 12462 permits the draining of the heating jacket.

To connect the heating jacket, see § OVERALL DIMENSIONS.

28/35NT 1012-D00 11 13 Pump A31 A e

7. PARTICULAR VARIANTS

If necessary, refer to § OPENING OF THE PUMP for pump

disassembly.

8.1 Short duration (≤ 1 month)MOUVEX pumps and motor-driven pumps are well lubri-

cated when delivered to protect the internal parts during

brief storage in a building where :

• the temperature remains between 10°C and 50°C.

• the relative humidity does not exceed 60%.

• exposure to vibration is limited.

• pump is stored in an area sheltered from bad weather

and sun.

NOTICE

In the case of pumps ordered without testing characte-

ristics, it is necessary to grease the inside of the pump

before any storage.

8.2 Long duration (> 1 month)The recommendations from the manufacturer should be

followed if the pump is stored with its gear motor.

Pump ports should be filled with a non-corrosive liquid

that it compatible with the pump components in order to

prevent corrosion.

Unpainted external surfaces of the pump (e.g. shafts,

couplings, etc.) should be covered in some form of anti-

corrosion protection.

The bearing should be well greased. If the pump is to be

stored for more than the life of the grease, this one

should be replaced in time to prevent an excessive

degradation of its qualities.

The best storage conditions are inside a building that

meets the conditions set out above.

If inside storage is not possible, the materials should be

covered to prevent direct exposure to sun and bad wea-

ther. This protection should also prevent condensation.

Rotate pump shaft manually a few revolutions every two

months.

8.3 RestartingFollow the standard start-up procedure for the pump/

motor-driven pump, as well as the instructions below.

Turn the pump by hand to make sure the parts move

freely.

Replace the grease used to lubricate the bearing.

If the pump has a safety relief valve, remove it and

inspect the parts and make sure they move freely (see §

RELIEF VALVE for removal instructions).

8. STORAGE

The pump must be scrapped in compliance with the regula-

tions in force.

During this operation, particular care must be paid to the drai-

nage stages of the pump (pumped product).

9. SCRAPPING

Page 99: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

29/35NT 1012-D00 11 13 Pump A31 A e

10.1 Weight and center of gravity

10.1.1 Weight

From 90 to 110 kg depending on variants.

10.1.2 Center of gravity

NOTICE

The position of the center of gravity may vary slightly

depending on the chosen options (relief valve, stirrup,

front cover with heating jacket...) and the position of

the moving parts inside the pump.

10.2 Overall dimensionsSee following pages.

10.3 CurvesConsult our Technical Services.

10.4 Operation limits and characteristicsAcceptable maximum suction pressure.................. 9 barga

Acceptable maximal differential pressure...............10 bar

Acceptable maximum discharge pressure..............12 barg

Acceptable maximum pressure in heating jacket ... 8 barg

Acceptable maximum speed ..................................400 rpm

Acceptable minimum temperature..........................-15°C

Acceptable maximum temperature ........................80°Cb

Acceptable maximum temperature

in heating jacket......................................................80°Cb

Maximum flowratec .................................................33 m3.h-1

Cylinder capacity ....................................................1,392 L

10. TECHNICAL CHARACTERISTICS

a NOTICE : In the case of a pressure suction higher than the atmospheric

pressure, provide a valve to prevent the flow of liquid when the pump is

stopped.

b Consult our Technical Services for higher temperatures.

c This value can vary depending on your application parameters. You can

contact our Technical Services at any time to ask for the information you

require.

Page 100: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

30/35NT 1012-D00 11 13 Pump A31 A e

10. TECHNICAL CHARACTERISTICS (continued)

Overall dimensions

Variant

double

relie

f valv

e

Variant

stirr

up

Fla

ng

es c

om

pa

tib

le w

ith

old

AM

se

rie

s

Fla

nges P

N16

Fla

nges P

N20

CR

OS

S-S

EC

TIO

NA

-A

ER

elie

f valv

e s

ettin

g.

PP

um

p p

late

.

P1

Pum

p r

ota

tion d

irection p

late

.

RM

ain

rota

tion d

irection index.

Sp

Mounting p

oin

t fo

r pum

p p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

Sr

Mounting p

oin

t fo

r re

lief

valv

e p

robe :

M6 -

thre

aded w

idth

: m

ax.

8 m

m.

VP

um

p d

rain

G3/8

”.

Page 101: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

31/35NT 1012-D00 11 13 Pump A31 A e

10. TECHNICAL CHARACTERISTICS (continued)

A31 A

with h

eating jacket

2 x

3/4

” B

SP

Depth

max.

: 15

OH

eating jacket

dra

in G

1”.

PP

um

p p

late

.

P1

Pum

p r

ota

tion d

irection p

late

.

U1

Heating jacket

inle

tfo

r liq

uid

Heating jacket

outlet

for

ste

am

U2

Heating jacket

outlet

for

liquid

Heating jacket

inle

t fo

r ste

am

VP

um

p d

rain

G3/8

”.

Page 102: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

32/35NT 1012-D00 11 13 Pump A31 A e

11. TROUBLESHOOTING

ZERO OR INSUFFICIENT FLOW

1 PRELIMINARY CHECKS

1-1

Make sure that the plastic plugs have been taken away from the ports of the pump and that the pump is

running (defective drive, damaged motor, etc., faulty transmission : broken coupling, sliding belt, worn or

poorly coupled clutch, etc.).

1-2

Make sure that the pump rotates in the correct direction corresponding to the direction in which the liquid

circulates in the installation (cf. the pump plate). If necessary, change the electric motor connections or

adjust the piping as necessary (diesel engine drive).

1-3Make sure that there is liquid in the tank from which the pump draws and that the end of the inlet piping is

constantly submerged.

1-4Make sure that the pump rotation speed is sufficient. Determine this by checking the speed of the pump

motor (see motor plate) and the speed reduction ratio (see reduction gearbox plate) or use a rev. counter.

If these checks do not highlight the problem :

2MEASURE THE DISCHARGE PRESSURE (as close to the outlet of the pump as possible, with a mini-

mum distance of 5 pipe diameters).

2-1 If the pressure is lower than the figures given for the material, or null, this could be due to :

2-1-1A poorly adjusted relief valve, the valve setting is lower than the discharge pressure (tighten the set screw

or replace the spring after checking that the electric motor is suitably protected).

2-1-2The valve is not closed ; either the plunger has not returned to its initial position, or there is dirt on the

valve seat.

2-1-3 The pump is worn, this will also affect the suction capacity of the pump (cf 3-2-2 c).

2-2 If the pressure complies with the equipment data (pump speed and motor output) it is possible that :

2-2-1

The pressure required for the given installation to obtain the required flow rate is too high and the flow is

partially or totally circulating via the relief valve, or :

a. the height of the discharge is too great (reduce it by bringing the discharge tank to the level where the

pump is). If suction conditions are favourable, the pump can also be moved closer to the discharge tank.

b. that head losses are too high because :

- the piping is unsuitable (too many "bends", too long or the diameter is too narrow) for the process

conditions : Flowrate, Specific Gravity, Viscosity (this can change considerably with temperature).

Reduce the head losses by simplifying the circuit : reduce of the number of fittings, valves, elbows,

etc... Move the pump closer to the discharge tank or vice versa, if conditions permit. Increase the

diameter of the piping, etc... Reduce the product viscosity via heating. Reduce the flow, etc...

- of partially blocked piping (valve partially closed, tap partially shut, cloth obscuring flow, etc.).

2-2-2The discharge piping is completely blocked (valve fully closed, tap completely closed, cloth plugging flow,

full protection seal left by carelessness, etc...), in this case, all the liquid passes via the relief valve.

Page 103: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

33/35NT 1012-D00 11 13 Pump A31 A e

11. TROUBLESHOOTING (continued)

3 MEASURING THE VACUUM PRESSURE (as close as possible to the pump inlet, inlet side).

3-1If the vacuum is high, e.g. higher than or equal to 6 to 7 metres WC (0.6 to 0.7 bara i.e. about 45 or

50 cm of mercury), this can result in pump noise. The cause could be :

3-1-1

a. the suction lift is too high (reduce it by taking the pump down closer to the level of the liquid)

b. the dynamic suction losses are too high :

1. cf 2-2-1 b

2. the inlet piping orifice is too close to the bottom of the tank.

3-1-2 The inlet piping is completely blocked (valve, tap, filter, cloth, full seal forgotten, etc.)

3-1-3

The liquid vapour pressure is too high (or has become too high following, for example, a change of tem-

perature). Bring the pump closer to the level of the liquid, install the pump closer to the feed or cool the

liquid to reduce the vapour pressure.

3-2

If the vacuum is low, for example, less than 3 metres WC (i.e. about 20 cm of mercury), check for leaks

on the inlet pipe, isolate the pump from the inlet piping (by closing the valve nearest the pump or by inser-

ting a full flange seal) and measuring the vacuum once again.

3-2-1

If the vacuum is high with the isolating valve closed on suction line, e.g. higher than or equal to 6 or 7

metres WC (i.e. about 45 to 50 cm of mercury), the pump is not the cause :

a. there must be an air inlet upstream of the pump isolating valve.

b. the liquid vapour pressure is or has become too elevated due to a change of temperature (cf 3-1-3).

3-2-2

If the vacuum is low or non-existent, the reason could be :

a. that the valve is not closing properly, due to dirt on the valve seat.

b. air is entering the pump (check the front cover seals, flanges, etc...)

c. the pump is worn and the internal tightness is out of specification (the piston bushings are worn, worn

piston and cylinder, broken piston wear compensation springs, worn partition, broken shaft).

ABNORMAL HEATING OF BEARINGS

4 This heating can be caused by :

4-1 - excessive tension in the transmission (belt or chain) on the pump shaft.

4-2- excessive pulling on the pump flanges by the piping (in this case, it must have been necessary to force

the piping into position to connect it to the pump).

4-3- poor alignment of the pump - due for example to 4-2 (the pump is partially or totally uncoupled, the

pump shaft and drive shaft are not aligned with each other).

4-4- inadequate anchoring of the pump unit leading to deformation of the chassis (make sure that the chas-

sis is clear of the ground except for the 3 anchoring points).

4-5 - seizing of the bushings (cured product preventing lubrication and cooling, excess power, etc...).

4-6- running in period for new bearings. The temperature should return to normal values after a few operating

hours.

LEAKING SEALS

5

The seal may leak if :

a. it was damaged during assembly (scratching on the shaft), damage to ‘O’rings in seal,

b. it is incompatible with the product (chemical and mechanical aggression / abrasion of ‘o’ rings and seal faces),

c. it is worn through normal use.

6The shaft is worn at the seal or does not rotate correctly due to poor alignment, excessive tension on the

transmission belts, chains, etc...

Page 104: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

34/35NT 1012-D00 11 13 Pump A31 A e

11. TROUBLESHOOTING ( continued)

ABNORMAL NOISES

These noises can be caused by hydraulic and mechanical sources. They can be distinguished by the fact

that only the former disappear (or at least lessen) when air is allowed into the inlet pipe.

7 HYDRAULIC NOISES

These noises can come from insufficient product being supplied to the pump, or :

7-1- the rotation speed is too high for the installation conditions (increase of viscosity due to a change of

product or a reduction of temperature, etc.).

7-2- that the suction head is too high or has become too high due to excessive head losses following clog-

ging of the piping or filter, a change of viscosity of the liquid, etc.,

7-3 - an increase of the vapour pressure with a rise of temperature.

8 MECHANICAL NOISES

These can stem from :

8-1- the relief valve knocking on the seat when the discharge pressure is close to the relief valve adjustment

pressure (turn the adjustment screw after making sure that the electric motor is suitably protected).

8-2- abnormal stress on the pump : the transmission is pulling on the shaft, pulling on the flanges by the

piping.

8-3 - a broken part or foreign body has entered the pump.

EXCESS POWER CONSUMPTION

9 The most spectacular event occurs when a diesel engine stalls or the power to an electric motor is shut off.

9-1

If this incident occurs when closing the discharge line, the cause may be :

a. the relief valve is assembled back to front.

b. the relief valve is adjusted too tight.

c. the motor protection is adjusted too low or wrong circuit breaker have been fitted.

9-2

If the incident occurs during operation, the cause could be :

a. an inadequate motor (in this case, the discharge pressure complies with what was expected).

b. head losses higher than expected - following higher viscosity or specific gravity than planned initially

(in this case, the discharge pressure is higher than that planned. The pressure can be reduced by

loosening the relief valve adjustment screw - the flow is decreased).

c. excessive speed of rotation.

d. a fault of the equipment (faulty alignment, deformation of the chassis, stress exerted by the piping on

the flanges, seizing, etc.).

Excessive consumption of electricity can also be due to a poor motor connection (e.g. a 3 phase motor

operating on 2 phases).

Page 105: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

35/35NT 1012-D00 11 13 Pump A31 A e

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12. CERTIFICATE OF CONFORMITY

Page 106: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

INSTRUCTIONS 1075 e

Section

Effective November 2013

Replaces October 2013

Original instructions

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

Additional instructions for ATEX certified equipment

Pumps and pumping unitsA12 A - A18 A - A31 A

Page 107: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

2/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

The following instructions must be read at the same time as:

1. standard NF C 15 100,

2. standard NF EN 60 079-14 (electric installations in explo-

sive gaseous atmospheres),

3. standard NF EN 60 079-17 (inspection and maintenance

in dangerous locations),

4. rulings, orders, laws, directives, circulars for application,

standards, professional practices and any other docu-

ment related to its place of installation.

We disclaim any responsibility in the case of non-conformity

with these documents.

This manual is an addition to our general manual.

For equipment other than the pump (probe, motor, etc.), the

instructions in this manual are intended to help during assem-

bly, but shall in no way replace the specific instruction

manuals of equipment manufacturers. These specific instruc-

tion manuals must be read before assembling the equipment.

The equipment must be installed by qualified, skilled and

authorised personnel.

Our equipment is labelled CE by virtue of directive ATEX

94/9/CE.

It is designed for use in explosive atmospheres from 0,8 bar

to 1,1 bar and temperatures from -20°C to +40°C and for the

gas groups and zones below :

• gas group IIA or IIB

• category 2GD or 3GD

• zone 1, 21, 2 or 22

• gas group IIC

• category 3GD

• zone 2 or 22

Check the compatibility between the informations on the

rating plate, the explosive atmosphere present, the area of

use and the ambient and surface temperatures.

According to the directive 94/9/CE, the accessories or (and)

components assembled and equipping the motors of our

pumps must have a standard CE declaration of inspection.

ECCENTRIC PISTON PUMPSMOUVEX PRINCIPLE

ADDITIONAL INSTRUCTIONS FOR ATEX CERTIFIED PUMPS AND PUMPING UNITS

MODELS : Pumps and pumping units A12 A - A18 A - A31 A

TABLE OF CONTENTS Page

1. CATEGORY 2 AND 3 CERTIFICATION FOR MOUVEX

2. TABLE OF PUMP CHARACTERISTICS . . . . . . . . . . . . . . .3

3. REPLACEMENT OF PARTS . . . . . . . . . . . . . . . . . . . . . . . .33.1 Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.2 Pumping units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

4. TEMPERATURE CLASS OF PUMPS AND PUMPING UNITS 44.1 Protection by limiting the temperature of the pumped

product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

4.2 Pumping units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

5. OPERATION WITHOUT ANY PUMPED PRODUCT . . . . . .55.1 Operation on a product that does not generate its

own explosive atmosphere or generate an explosive

atmosphere with an ignition temperature that is

higher than 160°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

5.2 Operation on a product that generates its own

explosible atmosphere and with an ignition

temperature of less than 160°C . . . . . . . . . . . . . . . . . .5

5.3 Presumed pump failure . . . . . . . . . . . . . . . . . . . . . . . . .5

6. DISCHARGE PRESSURE RELIEF . . . . . . . . . . . . . . . . . . .66.1 Pumps and pumping units equipped with an integrated

relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

6.2 Pumps and pumping units without an integrated relief

valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

7. CONTROLLING THE ROTATION SPEED . . . . . . . . . . . . . .7

8. CLOSED-CIRCUIT OPERATION . . . . . . . . . . . . . . . . . . . .7

9. SOLVENTS NOT COMPATIBLE WITH SEALS . . . . . . . . . .7PUMPS AND UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

10. RISKS OF EXOTHERMIC REACTION . . . . . . . . . . . . . . .7

11. PROTECTION AGAINST FOREIGN BODIES . . . . . . . . . .7

12. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .812.1 Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

12.2 Pumping unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

13. POSSIBLE LEAKS OF THE PUMPED PRODUCT . . . . . .8

14. PAINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .814.1 Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

14.2 Pumping units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

15. DUST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

16. PUMP DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .916.1 Alignment of the pump and drive . . . . . . . . . . . . . . . .9

16.2 Elastic coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

16.3 Electric installation of the pump motor or gear motor .9

16.4 ATEX characteristics of the pump motor or gear motor9

17. EARTHING CONNECTION . . . . . . . . . . . . . . . . . . . . . . .9

18. DIRECT SUNLIGHT EXPOSURE . . . . . . . . . . . . . . . . . . .9

19. PUMP MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Page 108: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

3/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

1. CATEGORY 2 AND 3 CERTIFICATION FOR MOUVEXPUMPS AND UNITS

MOUVEX pumps and units carry category 2 certification (high

level of protection). They are, therefore, obviously suited to

category 3 uses (standard level of protection).

Unless otherwise indicated, the recommendations contained

in these Instructions apply to the equipment in categories 2

and 3.

2. TABLE OF PUMP CHARACTERISTICS

Pompe Serie A A12 A A18 A A31 A

Acceptable continuous max. speed (tr.min-1) 500 450 400

Maximum suction pressure acceptable (bar) 9 9 9

Acceptable maximal differential pressure (bar) 10 10 10

Maximum discharge pressure acceptable (bar) 12 12 12

Maximum temperature of product pumped (°C) 80 80 80

Acceptable maximum temperature in heating jacket (°C) 80 80 80

3. REPLACEMENT OF PARTS

3.1 PumpsMOUVEX pumps parts can only be replaced by MOUVEX

parts corresponding to the original configuration of the

pump.

Failure to these instructions results a modification of the

pump's characteristics and its ATEX certification will no

longer be applicable.

All operations on MOUVEX ATEX equipment must be

carried out by MOUVEX personnel or by personnel spe-

cifically authorised to carry out such operations.

Non-conformity with this rule will result in the loss of the

MOUVEX ATEX pump certification.

Standard mechanical seal :

The standard mechanical seal must be ATEX certified

with the same level of protection or better than that of the

pump, operating conditions being taken into account.

3.2 Pumping unitsMOUVEX pumping unit equipment must only be repla-

ced by equipment with a level of protection that is at

least equivalent to that of the pumping unit.

Incorporation and use in the pumping unit must not

change the compliance thereof with the essential requi-

rements of Directive 94/9/EC

Failure to follow these rules will result in the loss of ATEX

MOUVEX certification for the pumping unit.

NOTICE :

Above a pumped fluid / heating temperature of 40°C, pump operation without having temperature control device switching off

pump power supply cannot be guaranteed for all applications parameters (pressure, viscosity, rotation speed…).

Please contact our technical department to check the definition of your application.

Minimum running temperature : See pump Instructions manual.

Page 109: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

4/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

4. TEMPERATURE CLASS OF PUMPS AND PUMPING UNITS

4.1 Protection by limiting the temperature ofthe pumped productPumps are devices whose surface temperatures greatly

depend on the products they pump.

ATEX MOUVEX certification defines the temperature class

of the pump according to the temperature controller device

setting threshold that is responsible for controlling the

surface temperature of the pump (and, if applicable, of

controlling that of the relief valve surface temperature ;

see § DISCHARGE PRESSURE RELIEF).

A temperature limiter device is necessary to respect the

temperature classification.

This device must :

• be installed in emplacement provided for this purpose,

• cut the power supply to the pump and controlling any

safety measures required by the installation,

• be conform to current regulations and standards

especially with regulation related to electric equip-

ment in explosive atmosphere (EN 50495…),

• have a level of protection against explosions equiva-

lent or higher than that of the pump,

• have a minimum level of integrated safety adapted to

equipment category (see table below).

The activation threshold of the temperature limiter device

should be selected to ensure that the temperatures at

controlled locations do not exceed the values given

below.

Setting of the activation threshold should take into

account the precision of the temperature limiter device.

Example : to a precision of ±5K, activation threshold in

temperature class T4 should be set to 125 – 5 = 120°C.

4.2 Pumping unitsThe temperature classification of the pumping units depends

on the temperature classification of all equipment

making up the pumping unit ; the one enforced is that of

the element with the most restrictive classification.

Example : A pumping unit with T3 motor, a T6 pressure

switch and a T4 pump will have a T3 temperature clas-

sification.

Pump category 3 2

Level integrated security required neither SIL1

Temperature classMaximum detection

threshold of the

temperature limiter devices

T4 125°C

a See overall dimensions in the pump’s Instructions.

Page 110: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

5/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

5. OPERATION WITHOUT ANY PUMPED PRODUCT

Pumps using the MOUVEX principle, A series, can be run dry,

without any pumped product in the pump, throughout the pump

priming time without causing the temperature to exceed the

temperature classification (for example during the priming or

emptying of pipes). However, this is allowed only on condition

that the following restrictions are complied with :

5.1 Operation on a product that does notgenerate its own explosive atmosphere orgenerate an explosive atmosphere withan ignition temperature that is higher than160°C• Temperature of the external surfaces of the pump at

start-up less than 40°C b,

• Differential pressure when the pump works without the

pumped liquid limited to 3 bar,

• Operating time without pumped product (dry running) not

exceeding the value defined below.

Maximum running time

without any pumped product

This duration may be spread over several operating per-

iods spaced at least 15 minutes apart. Any operation for

longer than this period will entail detailed inspection of

the equipment and possibly disassembly of it to ensure

that the previous operation did not lead to any additional

ignition risks (particular attention will be paid to the fact

that even though the external temperatures of the pump

comply with the limits defined above, the inside surfaces

can nonetheless be at high temperatures).

5.2 Operation on a product that generatesits own explosible atmosphere and withan ignition temperature of less than 160°CIt is forbidden to operate without the pumped liquid.

5.3 Presumed pump failureWhen the behaviour of the pump indicates that an equip-

ment failure has occurred (drop in flow rate / pressure,

abnormal noise, etc.), the pump must not operate

without pumped product.

Consequently, the pipe must not be drained by the pump.

It is strictly forbidden to operate the pump without observing

these recommendations.

The user must evaluate his installation and list all possible

situations in which it functions without pumped product and

take the necessary steps to ensure compliance with the ope-

rating limits.

The situations involving operation without pumped fluid can

for example be the following :

• priming of the pump,

• draining the pipes,

• interruption of pump feed (tank empty),

• suction pipe blocked (valve, filter fouled, etc.),

• air block at suction,

• …

This can for example be checked by an operator ensuring

that the applications dependent on the pump are working or

that the physical values dependent on the presence of liquid

(flow, pressure, torque, etc.) correspond to those expected.

These control measures can be automated by using a pump

shutdown control device.

This device must conform to current regulations and standards

especially with regulation related to electric equipment in

explosive atmosphere (EN 50495…). The choice of its cha-

racteristics (temperature resistance, category, etc.) must gua-

rantee a level of protection at least equal to that of the pump.

When a specific Instructions is provided for mechanical seals,

please read it to know the usual precautions recommended

by the manufacturer.

Temperature class Time

T4 6 min

b Special arrangements have to be made for cases where the pumped product

requires that the pump be reheated before it is started up. Please contact our

Technical department for more information.

Page 111: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

6/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

6. DISCHARGE PRESSURE RELIEF

Any overshoot of the maximum allowable pressures is consi-

dered to be abnormal pump / pumping unit operation which

can lead to surface temperatures in excess of the pump /

pumping unit temperature classification, as well as risks to

the user and/or the installation.

To avoid these risks, the user must equip the pump / pumping

unit with a pressure limiter with a threshold chosen according

to the lowest allowable maximum pressure for the circuit com-

ponents (including head losses).

6.1 Pumps and pumping units equipped withan integrated relief valveSince the pressure relief is incorporated in the pump / in

the elements of the pumping unit, the product is recircu-

lated directly from the discharge port to the suction port

/ from the discharge pipe to the suction pipe.

The short length of the recirculation circuit means that if

the pump operates with a blocked discharge port, the

outer surfaces of the relief valve can reach very high

temperatures in a short time.

For these reasons, a temperature limiter device can be

necessary to respect the temperature classification,

depending on equipment category and its use (see board

below).

The temperature limiter device has to :

• be installed in emplacement provided for this purpose c,

• cut the power supply to the pump and control any safety

measures required by the installation,

• be conform to current regulations and standards

especially with regulation related to electric equip-

ment in explosive atmosphere (EN 50495…),

• have a level of protection against explosions equiva-

lent or higher than that of the pump,

• have a level of integrated safety adapted to the mate-

rial category and the type of the relief valve using

(see board below).

The activation threshold of the temperature limiter device

should be selected to ensure that the temperatures at

controlled locations do not exceed the values given

below.

Setting of the activation threshold should take into

account the precision of the temperature limiter device.

Example : to a precision of ±5K, activation threshold in

temperature class T4 should be set to 125 – 5 = 120°C.

NOTICE :

The temperature limiter device installed on the inte-

grated relief valve is not designed to control pump

surfaces temperature as required in the section

TEMPERATURE CLASS OF PUMPS AND PUMPING UNITS, but to

be triggered when a malfunction could raise the

temperature of the relief valve surfaces to a level

higher than what is acceptable for the ATEX area.

The temperature of pump surfaces must be checked

using a device that is separate from the temperature

limiter device installed on the relief valve.

6.2 Pumps and pumping units without anintegrated relief valve

6.2.1 Protection by pressure switch

Protection may be provided by installing a pressure

switch that stops the equipment in the event of over-

pressure.

This device must conform to current regulations and

standards especially with regulation related to electric

equipment in explosive atmosphere (EN 50495…). The

choice of its characteristics (temperature resistance,

category, etc.) must guarantee a level of protection at

least equal to that of the pump / pumping unit.

6.2.2 Protection by external relief valve

Over-pressure protection can be provided by installing

an external relief valve with return to the tank / suction

pipe.

In this case, the user must ensure that the circuit com-

plies with the recommendations of § CLOSED-CIRCUIT OPE-

RATION.

We also recommend checking that heating on the relief

valve remains compatible with the temperature classifi-

cation of the zone in which it is installed.

Temperature classMaximum detection threshold

of the temperature

limiter device

T4 125°C

Type of the relief valve using d Protection Regulation

Pump category 3 2 3 2

Temperature limiter device required no yes e yes e yes e

Level integrated security required - neither neither SIL 1

c See overall dimensions in pump Instructions.

d Types of the relief valve using :

Protection : protection of the pump against accidental and non-repetitive

over pressures. The relief valve cannot also fulfil a control role.

Pressure control : controlling the pressure / flow on the application (e.g. :

control of the flow of the pump without returning to the tank or speed control).

The relief valve can also fulfil a protective role.

e Single relief valve : only one temperature limiter device.

Double relief valve : two temperature limiter devices.

Page 112: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

7/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

When the pump / pumping unit is operated successively on

different products, the user must make the necessary arran-

gements to avoid heating through an exothermic reaction bet-

ween the various products pumped.

10. RISKS OF EXOTHERMIC REACTION

The user must ensure that the seals equipping the pump /

pumping unit are compatible with the product pumped and

products used to clean the pump.

9. SOLVENTS NOT COMPATIBLE WITH SEALS

The user will take the necessary steps to protect the installa-

tion against ingress of any foreign bodies that could damage

the pump / pumping unit, for example by ensuring that neither

the pumped product nor the piping contain foreign bodies lia-

ble to damage the pump / pumping unit, or by installing an

appropriate suction filter.

If the pump is operated without pumped product, particular

attention must be given to the risk of sparks and hot surfaces

generated by friction between foreign bodies and the inner

surfaces of the pump / pumping unit. This must be assessed

prior to any use of the pump without pumped product.

11. PROTECTION AGAINST FOREIGN BODIES

8. CLOSED-CIRCUIT OPERATIONClosed-circuit operation with small volumes of pumped pro-

duct can lead to significant heating of the pumped product.

The user must check that the recirculation circuit is large enough

to ensure that the pumped product temperature rise remains

below the temperature limits of all circuit elements.

This check can for example be carried out by installing a tem-

perature sensor controlling shutdown of the installation if the

maximum allowable values are exceeded.

This equipment must conform to current regulations and stan-

dards especially with regulation related to electric equipment

in explosive atmosphere (EN 50495…). The choice of its cha-

racteristics (temperature resistance, category, etc.) must gua-

rantee a level of protection at least equal to that required by

the area where it will be installed.

Any overshoot of the maximum allowable speed is conside-

red to be abnormal pump operation which can lead to surfa-

ce temperatures in excess of the pump temperature classifi-

cation, as well as risks to the user and / or the installation.

At first start-up or after any modification to the pumping unit

or its settings, the pump rotation speed must be checked to

ensure that it remains below or equal to that defined for the

application.

7. CONTROLLING THE ROTATION SPEED

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8/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

12.1 PumpExcessive wear of pump parts is considered to be

abnormal pump operation which can lead to surface

temperatures in excess of the pump temperature classi-

fication, as well as risks to the user and / or the installa-

tion.

12.1.1 Lubrication

Using a pump with a bearing grease that has exceeded

its allowable limits is considered to be abnormal pump

operation, liable to generate surface temperatures in

excess of the pump temperature classification.

The user must follow the oil change intervals recommended

by the manufacturer and stated in the pump Instructions.

12.1.2 Friction parts

Inspection intervals of friction parts are highly dependent

on conditions of service, they should be defined according

to the application.

12.1.2.1 Friction bushings, sleeve and piston bearing

The user must check that the wears on friction bushings,

sleeve and piston bearing remain below the maximum

allowable values defined in the Instructions supplied

with the pump.

12.1.2.2 Slide block, slide block pads, slide block bushing

The user must check that the wears on slide block,

slide block pads, slide block bushing remain below the

maximum allowable values defined in the Instructions

supplied with the pump.

12.1.2.3 Cylinder and piston

The user must check that the wears on cylinder and

piston remain below the maximum allowable values

defined in the Instructions supplied with the pump.

12.1.3 Bearing

The user must follow the preventive maintenance

recommendations defined in the Instructions supplied

with the pump.

12.1.4 Alignment

After any maintenance on the pump, pump and gear

motor alignment must be controlled.

12.2 Pumping unit

12.2.1 General

Maintenance of the equipment making up the pumping

unit will be carried out in accordance with instructions

provided by the manufacturer.

12.2.2 Maintenance of electrical equipment

Before performing any maintenance on electrical com-

ponents (engine, control box, safety elements, control

and protection of the pump, etc.) you should :

• Refer to the technical documentation accompanying

the equipment,

• Respect the safety instructions and, especially, do

not open when live.

During maintenance operations :

• Check the cable glands, tighten the glands, terminals

and other connections,

• When closing electrical components, check the lubri-

cation and cleanliness of the mating surface(s).

12.2.3 Alignment

After any maintenance on the pumping unit, pump and

gear motor alignment must be controlled.

12. MAINTENANCE

14.1 PumpsIf the painting on the pumps is retouched, the user must

make sure that the recommendations of standard EN

13463-1 are being complied with regard to non-conduc-

tive coatings on metal surfaces(total thickness of non-

conductive coating not exceeding 2 mm for group IIA

and IIB gas and vapours or 0,2 mm in the case of group

IIC gas and vapours).

To do this, it may be necessary to sand the pump befo-

re doing any paint retouches.

14.2 Pumping unitsDuring any possible paint touch-up operation of the

pumping unit's elements, the user must ensure com-

pliance with the recommendations contained in the spe-

cific instructions from the equipment manufacturers.

14. PAINT

13. POSSIBLE LEAKS OF THE PUMPED PRODUCTPossible leaks of liquid via the pump / pumping unit seals or

mechanical seals do not lead to additional risks of fire provi-

ded that the explosive atmosphere surrounding the equip-

ment corresponds exactly to the type of atmosphere for which

it was selected.

Make sure to check that when coming into contact with the

atmosphere surrounding the pump or with material located

near the pump / pumping unit, the pumped products do not

risk to modify the classification of the area where the equip-

ment is located.

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9/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

16. PUMP DRIVE

16.1 Alignment of the pump and driveTo carry out alignment of the pump and drive, use a per-

fectly straight steel rule to control misalignment and fee-

ler gauges for angular misalignment.

It is important to control the alignment of each step of the

installation in order to ensure that none of the steps lead

to stresses on the unit or the pump :

• after fastening on the foundations,

• after fastening the piping,

• after the pump has operated at normal operating

temperature.

An alignment control should be performed every 6 months.

The following three figures show the various faults that

could be encountered. The allowable misalignment

values are stated in the Instructions supplied with the

coupling.

NOTICE : A elastic coupling does not avoid to do a good

alignment.

16.2 Elastic couplingATEX certified elastic coupling must be used. This cou-

pling must have a level of protection equivalent or better

than that of the pumping unit. For mounting the elastic

coupling, follow the indications in the specific

Instructions of the equipment manufacturer.

16.3 Electric installation of the pump motoror gear motorCheck that the indications on the pump rating plate and

the supply voltage match.

Follow the indications in the specific Instructions of the

equipment manufacturer to connect the motor to the

mains supply.

Refer to the wiring diagram, use wiring adapted to the

power and ensure that the contacts are tightened vigo-

rously.

Motors must be protected by circuit breakers and fuses

provided in the manufacturer’s Instructions.

Connect the regulatory earthing connections.

Start the pump up empty to check that the connections

are correct and check that the direction of rotation cor-

responds well with the direction of suction and dischar-

ge of the installation.

16.4 ATEX characteristics of the pump motoror gear motorThe motor or gear motor used must conform to current

regulations and standards especially with regulation

related to electric equipment in explosive atmosphere.

The level of protection selected has to be equal to or

greater than that of the pumping unit. For instructions on

maintenance of motor and gear motor, follow the indica-

tions in the specific Instructions of the equipment manu-

facturer.

Faire la vérification en 4 points :en haut - en bas - à gauche - à droite

Correct

Faux parallélisme

Défaut angulaire

To prevent any risk of dust igniting, the user must check that the

layer of dust on the pump / pumping unit is no more than 5 mm

thick.

15. DUST

18. DIRECT SUNLIGHT EXPOSURE

A direct exposure of the pump / pumping unit to the radiance

of the sun is likely to increase the temperature of their surface

above ambient temperature.

As a result of fact, the User must take sure that the pump /

pumping unit is not displayed in the direct radiance of the sun

or the temperature of the external surfaces of the pump is

compatible with its level of protection.

To avoid the risk of ignition due to electrostatic discharge, the

pump and the pumping unit must be grounded.

Particular attention should be given to earthing connection for

the pumping units mobile or mounted on truck.

17. EARTHING CONNECTION

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10/10NT 1075 11 13 ATEX A12 A - A18 A - A31 A e

19. PUMP MARKING

The marking of the A Series pumps is as follows :

MOUVEX F89 AUXERRE

Ppe A + Short description of the pump

II 2GD c b IIB T4

or

II 3GD c b IIB T4

or

II 3GD c b IIC T4

Serial no.

Year of manufacture

X

The marking of the A Series pumping units is as follows :

MOUVEX F89 AUXERRE

Gpe A + Short description of the unit

II 2GD c b IIB T4

or

II 3GD c b IIB T4

or

II 3GD c b IIC T4

Serial no.

Year of manufacture

X

In the case of a MOUVEX pumping unit :

• the pump marking is removed and replaced by the pum-

ping unit marking. This marking takes into account all the

components of the pumping unit at its delivery,

• all other ATEX-certified components in the pumping unit

retain their marking.

Page 116: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

PT100 ATEX temperature probe

INSTRUCTIONS 1054 e

Section

Effective June 2014

Remplace January 2014

Translation of the

original instructions

These MOUVEX Instructions provide assistance for installation but there are not, in any circum-

stances, intended to replace the specific Instructions of the relevant equipment suppliers.

Those Instructions must be read before fitting the equipment.

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

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1. PROFSI2-APT-AWP-2A digital thermostat 2 thresholds

2. COFFREX-BCL-05-5W junction box

3. SONDEX-1GD-I-A3-COSH- (200°C) sensor or SONDEX-1GD-I-A3-TUBL- (250°C) sensor

2/3NT 1054 06 14 PT100 ATEX temperature probe e

THE EQUIPMENT SUPPLIED

Supplied thermostat is pre-set at 120°C. It can be set to ano-

ther temperature with software supplied on CD-ROM.

The sensor is supplied with a 3 m. cable.

System accuracy : ......................................± 5°C

Components reliability :

• PT100 0 - 200°C sensor...............MTBF : 90 years

• PT100 0 - 250°C sensor...............MTBF : 90 years

• Thermostat .....................................MTBF : 199 years

Cable (not supplied) between junction box and thermostat

must have following characteristics :

- Zone II B :

• 3 conductors ................................. 0,75 mm²

• Max capacity................................. 16,20 µF

• Max Inductance ............................ 1,28 H

- Zone II C :

• 3 conductors ................................. 0,75 mm²

• Max capacity................................. 2,41 µF

• Max Inductance ............................ 0,32 H

User must make sure that complete system loop (including

temperature sensor and installation stopping system) shows

a reliability level complying with SIL1 (EN 61508 series…).

SUPPLIED EQUIPMENT CHARACTERISTICS

Page 118: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

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3/3NT 1054 06 14 PT100 ATEX temperature probe e

TEMPERATURE SENSOR WIRING

M1

Circuit breaker open contact M1

Thermostat closed contact Threshold 1

Stopbutton

Start button

Contact

EXEMPLE OF INTEGRATION OF THE THERMOSTAT IN THECONTROL CIRCUIT OF PUMP MOTOR CIRCUIT BREAKER

Threshold 1

Threshold 2

PROFSI2-APT-AWP-2A

II B : Co : 16,2 uF

Lo : 1,28 H

II C : Co : 2,41 uF

Lo : 0,32 H

Page 119: A12 A pumpThe pump must be protected against excess pressure. It can be delivered with a internal relief valve or a pressure switch to carry out this function. If pump is used in both

Temperature Limiting Device(biblades probe)

Additional instructions

for ATEX certified equipment

Original instructions

INSTRUCTIONS 1068 e

Rubrique

En vigueur December 2013

Remplace Mai 2013

These MOUVEX Instructions provide assistance for installation but there are not, in any circum-

stances, intended to replace the specific Instructions of the relevant equipment suppliers.

Those Instructions must be read before fitting the equipment.

Your distributor :

Z.I. La Plaine des Isles - F 89000 AUXERRE - FRANCE

Tel. : +33 (0)3.86.49.86.30 - Fax : +33 (0)3.86.49.87.17

[email protected] - www.mouvex.com

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2/8NT 1068 12 13 ATEX temperature limiting device

(biblades probe) e

The instructions below must be read in conjunction

with:

1. NF C 15 100 standard,

2. NF EN 60 079-14 standard (electrical installations for

explosive gas atmospheres),

3. NF EN 60 079-17 standard (inspection and maintenance

in dangerous environments),

4. Decrees, laws, directives, circulars, standards, and any

other document concerning its installation environment.

We decline responsibility should the requirements above not

be met.

Equipment installation must be carried out by qualified,

competent and accredited personnel.

This notice supplements our general notice.

Our equipment is labelled CE in accordance with the ATEX

94/9/CE directive.

They are intended for use in the following gas explosive

atmospheres categories::

group IIA or IIB or IIC category 2G - zone 1

category 3 G - zone 2

Check the compatibility of the informations shown on the

descriptive plate with the type of explosive atmosphere, the

zone where it is to be used, and the ambient and surface

temperatures in that zone.

1. THE EQUIPMENT SUPPLIED . . . . . . . . . . . . . . . . . . . . . .31.1 Isolation amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2. DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42.1 Isolation amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.2 Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2.3 Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3 WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4 INSTALLATION TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . .6

5. WIRING OF THE INSTALLATION’S STOP STARTCONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

TABLE OF CONTENTS Page

TEMPERATURE LIMITING DEVICE

ADDITIONAL INSTRUCTIONS FOR ATEX CERTIFIED EQUIPMENT

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3/8NT 1068 12 13 ATEX temperature limiting device

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1. THE EQUIPMENT SUPPLIED

1.1 Isolation amplifierGalvanic isolation amplifier, 2 different models available:

230 V AC Power supply (or 24 V DC on request). Relay

output

The sensor loop is an intrinsic safety electric circuit EEx

ia IIC.

Safety level capacity SIL1 to SIL2 in accordance with

IEC61508 (amplifier only).

Must be installed in a non classified zone or in an ATEX

box if within a classified zone.

1.2 SensorSimple temperature sensitive TOR element, to be fixed

on the material to be monitored. Should be connected

directly to the isolation amplifier or via a cable for intrin-

sic safety electric circuits (recognisable as BLUE).

In no circumstance can the sensor be used without its

isolation amplifier.

The switching point (opening at maximum temperature)

is not adjustable. The choice of temperature limit is done

according to the temperature class required for ATEX

(see table below). The reset point is approximately

30°C (86°F) below the switch point

WARNING

• USE OF THE SYSTEM SAFETY MODE SHOULD BE

EXCEPTIONAL (TEMPERATURE LIMIT EXCEEDED

ACCIDENTALY).

• THE COOLING TIME BEFORE RESTARTING DEPENDS

ON THE SIZE OF THE EQUIPMENT MONITORED AND

THE RESET POINT.

Classification of

MOUVEX certified

equipment

Switch point of device

installed on the bypass

T5 90°C (194°)F

T4 120°C (248°F)

T3 175°C (347°F)

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2.1 Isolation amplifier

If the amplifier is mounted in a box installed in a non

classified zone, the box does not fall under the

94/9/CE directive. Nonetheless, it should provide

sufficient protection for the electric circuit from

water and dust.

If the amplifier is mounted in a box installed in a

classified zone, the box must comply with the

94/9/CE directive.

Respect the rules regarding the separation of the

Intrinsic Safety circuit from the other circuits.

2.2 SensorSensor body in aluminium, to be screw mounted on the

equipment to be monitored (without a seal) and greased

(with grease compatible with high temperatures), taking

care that the sensor body is attached to a paint-free area.

M6 x 8mm fixing. Max tightening torque 8 Nm.

Electrical junction : 2 wires maximum length 1m, without

polarity, isolated from the aluminium box.

Switch and reset limits not adjustable.

Average hysteresis 30°C (86°F)

For the junction with the sensor, use the junction box

supplied by MOUVEX.

Respect the rules regarding the separation of the Intrinsic

Safety circuit from the other circuits.

NOTE:

In order to mechanically protect the sensor’s wires, these

may be slid into a 4/6 “rilsan” or PTFE tube, which resists

the surrounding temperatures.

Several temperature sensors may be connected to the

same isolation amplifier (for example: to monitor a pump

equipped with a double bypass).

In this case, the temperature sensors are mounted in series.

The junction should be made at the connection box.

Junctions examples :

* Assembly is at the customer's expense unless specified as mounted in the

purchase order.

2.3 CableIt is imperative that the cable used to connect the sensor

to the amplifier is consistence with wiring for an intrinsic

safety circuit (PVC insulation, blue, labelled according to

IEC 60079-14): valid for 200 m.

For longer distances, refer to the insulation amplifier’s

accompanying instruction notice to calculate the Intrinsic

Safety loop.

Blue pluggable ter-

minal blockC class box

See “System description”

S2 Switch

No function

Green LED

Power supply

Yellow LED

Relay output

S3 Switch Line

Line fault control

(LB/LK)

S1 Switch

Action direction

Green pluggable ter-

minal

Red LED

LB/LK

Front

1 sensor version 2 sensor version

Protection of the wires

by a 4/6 tube and 2 heat-

retractable end fittings*

Junction box

Intrinsic safety cableEExEEx

non EExnon EEx

Towards inputs 1 and 3 of the isolation amplifier

2. DESCRIPTION

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5/8NT 1068 12 13 ATEX temperature limiting device

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Power supply (terminals 14 and 15): ± 10% (or ± 15% on request).

Sensor input (Terminals 1 and 3): NC contact (circuit open if the max temperature is exceeded).

Relay output (Terminals 7 and 8): NO contact (circuit open if max temperature is exceeded or if the amplifier power

supply is absent).

Max voltage 253 V AC: 2A

3. WIRING

Temperature sensor

Am

plifi

er

Yellow

Output Power supply

RedS1

Green

No

n c

las

sif

ied

zo

ne

Cla

ssif

ied

zo

ne

Switch S1 in position I (left).

Switch S2 in position I (left).

Switch S3 in position II (right).

It is imperative to use: - a NC sensor wired in 1 and 3,

- the relay output in 7 and 8,

- the switch S1 in position I.

.

Any other combination is inappropriate and generates a serious risk of malfunction of the temperature

limiting device’s safety function in the installation.

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6/8NT 1068 12 13 ATEX temperature limiting device

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On start-up, it is compulsory to carry out the entire test procedure for the temperature limiting device.

These tests are necessary to ensure that the operation of the installation, and in particular of the temperature limiting device,

is effective and safe.

If the test procedure is not scrupulously followed, the risk of malfunction of the temperature limiting device’s safety function in

the installation is increased.

In that case, safe stopping of the installation is not ensured.

The currents and power used in the intrinsic safety loop cannot cause an explosion.

Hence, it is possible to open the junction box and work on the temperature sensor loop with the power supply on.

4. INSTALLATION TESTS

TEMPERATURE LIMITING DEVICE TEST PROCEDURE ACTION … OTHERWISE… 1. Preliminary control

Before installation and connection

a. Check the electrical continuity of the sensor

After installation and connection. b. Check visually the mechanical integrity

of the amplifier, the sensor and the extension cable.

c. Check the position of the 3 switches S1 and S2 in I (left) S3 in II (right).

2. Power Supply Tests The blue pluggable terminal block K1 (terminals 1 to 3) (sensor), the green pluggable terminal block (terminals 7 to 9) (output), must be disconnected from the amplifier during the test.

Switch power on.

a. Check that the green LED PWR is on.

Check the power supply voltage, its polarity (for the 24 V DC model), the fuses.

b. Check that the yellow OUT LED is off.

Check the position of the S1 switch. Check that the blue pluggable terminal block K1 is unplugged for the test.

c. Check that the red CHK LED is off.

Check the position of the S1 switch.

Reconnect the blue pluggable terminal block to the amplifier (the sensor input loop is closed).

3. Test of the integrity of the sensor and conductors

The upper green pluggable terminal block K3 (terminals 7 to 9) (output), must be unplugged for the test.

a. Check that the yellow OUT LED is on.

Check the mechanical integrity of the sensor and the extension cable. Check that the wires ending in the blue pluggable terminal block K1 are well tightened in the terminals.

Disconnect the wire from terminal 1 of the blue pluggable terminal block K1.

b. Check that the yellow OUT LED is off.

Check the position of the S1 switch.

Reconnect the wire to terminal 1. Disconnect the wire from terminal 3 of the blue pluggable terminal block K1.

c. Check that the yellow OUT LED is off.

Check the position of the S1 switch.

Reconnect the wire to terminal 3. If a sensor is equipped with an extension cable.

Disconnect a wire from the sensor as close as possible to the sensor.

d. Check that the yellow OUT LED is off.

Check the mechanical integrity of the extension cable (short circuit within the cable).

Reconnect the wire to the sensor. Disconnect the other wire from the sensor as close as possible to the sensor.

e. Check that the yellow OUT LED is off.

Check the mechanical integrity of the extension cable (short circuit within the cable).

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Implementing a periodic control plan of the installation using this procedure is recommended.

We do recommand to do a control at least once a year.

4. INSTALLATION TESTS (continued)

TEMPERATURE LIMITING DEVICE TEST PROCEDURE ACTION… SINON…

If the installation is made up of 2 sensors, from one grouping connection terminal and an extension cable

Repeat the preceding test (3d and 3e) for each sensor.

Check the wiring of the grouping terminal.

Reconnect the green upper pluggable terminal block K3 (terminals 7 to 9) (output) to the amplifier.

4. Operating test of the power contactors.

The 3 pluggable terminal blocks K1 K3 K5 must be connected. The power contactor must be wired and in working order. The power must not be on (motor circuit breaker open)

a. Check that, when depressing the start button, the power contactor closes (steady state).

Check the contactor’s wiring. Check the wiring of the green upper pluggable terminal block. Check that the yellow OUT LED is on.

Check that, when depressing the stop button, the power contactor opens (steady state).

Check the contactor’s wiring.

Depress the start button; the power contactor closes (steady state).

b. Check that, when disconnecting the green lower pluggable terminal block (terminals 13 to 15) (power supply) of the amplifier, the power contactor opens (steady state).

Check that the green LED PWR is off. Check the contactor’s wiring.

c. Check that, when reconnecting the green lower pluggable terminal block (terminals 13 to 15) (power supply) of the amplifier, the power contactor does not close again (steady state).

Check the contactor’s wiring.

The 3 pluggable terminal blocks K1 K3 K5 must be connected. The power contactor must be wired and in working order.

Depress the start button; the power contactor closes (steady state).

d. Check that, when disconnecting the blue pluggable terminal block K1 (terminals 1 to 3) (sensor input) of the amplifier, the power contactor opens (steady state).

e. Check that, when reconnecting the blue pluggable terminal block K1 (terminals 1 to 3) (sensor input) of the amplifier, the power contactor does not close again (steady state).

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5. WIRING OF THE INSTALLATION’S STOP START CONTROL

WARNING

• THE WIRING OF THE INSTALLATION (POWER CONTAC-

TOR) MUST BE CARRIED OUT IN SUCH A WAY AS TO

ENSURE THAT WHEN THE MOTOR IS STOPPED BY THE

TEMPERATURE LIMITING DEVICE IT IS IMPOSSIBLE TO

RESTART AUTOMATICALLY.

• SO LONG AS THE TEMPERATURE HAS NOT COME

DOWN BELOW THE RESET TEMPERATURE LIMIT, THE

LIMITING DEVICE FORBIDS ANY RESTART OF THE

INSTALLATION, EVEN VOLUNTARY

PTB 00 ATEX 2081

Wiring example

Start button

Amplifier output

Stop button

Emergency stop

Motor contactor