a12 a pumpthe pump must be protected against excess pressure. it can be delivered with a internal...
TRANSCRIPT
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
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.
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
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)
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.
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
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)
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)
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
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)
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.
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)
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)
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)
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)
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)
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)
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)
• 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)
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)
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)
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)
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)
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
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
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)
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
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
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.
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.
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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
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
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.
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...
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).
35/35NT 1012-B00 11 13 Pump A12 A e
Es
t co
nfor
me
aux
disp
ositi
ons
suiv
ante
s :
Dir
ecti
ve
« M
AC
HIN
ES »
20
06/4
2/C
E et
au
x lé
gisl
atio
ns
natio
nale
s la
tra
nspo
sant
, po
rtan
t su
r le
s di
spos
itifs
de
sécu
rité
liés
aux
risqu
es
méc
aniq
ues
et
élec
triq
ues
appl
icab
les
aux
mac
hine
s to
urna
ntes
.
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
:200
9
Dir
ecti
ve
« A
TEX
»
94/9
/CE
du
23
mar
s 19
94
et
aux
légi
slat
ions
na
tiona
les
la
tran
spos
ant,
po
rtan
t su
r le
s ap
pare
ils
dest
inés
à
être
ut
ilisé
s en
at
mos
phèr
es
expl
osib
les.
Co
nfor
mité
ob
tenu
e pa
r ap
plic
atio
n de
s no
rmes
:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Cert
ifica
tion
ATEX
dél
ivré
e pa
r IN
ERIS
*, O
rgan
ism
e Ce
rtifi
cate
ur,
et
port
ant
le m
arqu
age
suiv
ant
: (C
)
L’éq
uipe
men
t dé
sign
é ci
-des
sus
doit
être
ut
ilisé
co
nfor
mém
ent
à l’u
tilis
atio
n qu
i en
a ét
é pr
évue
de
par
sa c
once
ptio
n et
sa
fabr
icat
ion,
et
con
form
émen
t au
x no
rmes
en
vigu
eur.
Nou
s, s
ouss
igné
s, d
écla
rons
que
l’éq
uipe
men
t co
ncer
né e
st c
onfo
rme
aux
Dire
ctiv
es
listé
es
ci-d
essu
s et
au
x no
rmes
ap
plic
able
s s’
y ra
ppor
tant
.
Is in
con
form
ity w
ith t
he p
rovi
sion
s of
the
fol
low
ing
Dire
ctiv
e:
«
MA
CH
INES
» D
irec
tive
200
6/42
/EEC
as
tran
spos
ed b
y th
e na
tiona
l le
gisl
atio
n, c
once
rnin
g sa
fety
equ
ipm
ents
and
arr
ange
men
ts
rela
tive
to
mec
hani
cal
and
elec
tric
ris
ks
appl
icab
le
to
rota
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
:200
9
« A
TEX
» D
irec
tive
94/
9/EC
(23
mar
ch 1
994)
as
tran
spos
ed b
y th
e na
tiona
l leg
isla
tion,
con
cern
ing
equi
pmen
t in
tend
ed t
o be
use
d in
ex
plos
ive
atm
osph
eres
. Co
nfor
mity
obt
aine
d by
app
licat
ion
of t
he
stan
dard
s :
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
ATEX
Cer
tific
atio
n de
liver
ed b
y IN
ERIS
*, N
otifi
ed B
ody,
and
with
the
fo
llow
ing
mar
king
: (
C)
The
equi
pmen
t in
dica
ted
abov
e m
ust
be
used
ac
cord
ing
to
the
fore
seen
use
by
its d
esig
n an
d its
man
ufac
turin
g, a
nd a
ccor
ding
to
the
curr
ent
stan
dard
s.
We,
un
ders
igne
d,
decl
are
that
th
e co
ncer
ned
equi
pmen
t is
in
co
nfor
mity
with
the
Dire
ctiv
es
liste
d ab
ove
and
in
the
appl
icab
le
stan
dard
s in
for
ce.
den
Best
imm
unge
n de
r na
chst
ehen
den
Rich
tlini
en e
ntsp
richt
:
„Mas
chin
en-R
icht
linie
“ 20
06/4
2/EE
C
wie
um
gese
tzt
im
natio
nale
n Re
cht
hins
icht
lich
der
Ausr
üstu
ngss
iche
rhei
t un
d Si
cher
heits
vork
ehru
ngen
bez
ogen
auf
mec
hani
sche
und
ele
ktris
che
Risi
ken,
die
für
rot
iere
nde
Mas
chin
en g
elte
n.
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
:200
9
„A
TEX
“ R
ich
tlin
ie 9
4/9/
EG (
23.
Mär
z 19
94)
wie
um
gese
tzt
im
natio
nale
n Re
cht
in
Bezu
g au
f Au
srüs
tung
en
für
den
Eins
atz
in
expl
osio
nsge
fähr
dete
r At
mos
phär
e.
Die
Ko
nfor
mitä
t ha
t G
eltu
ng
durc
h An
wen
dung
fol
gend
er N
orm
en:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Die
AT
EX-Z
ertif
izie
rung
w
urde
vo
n de
r be
nann
ten
Stel
le
INER
IS*
erte
ilt, u
nd m
it fo
lgen
der
Kenn
zeic
hnun
g:
(C)
Obe
n st
ehen
d be
zeic
hnet
e Au
srüs
tung
ist
ent
spre
chen
d de
m d
urch
Ko
nstr
uktio
n un
d Fa
brik
atio
n vo
rges
ehen
en V
erw
endu
ngsz
wec
k un
d en
tspr
eche
nd d
en g
elte
nden
Nor
men
ein
zuse
tzen
.
Die
U
nter
zeic
hner
er
klär
en,
dass
di
e be
zeic
hnet
e Au
srüs
tung
de
n ob
en
aufg
efüh
rten
Ri
chtli
nien
un
d de
n di
esbe
zügl
ich
gelte
nden
N
orm
en e
ntsp
richt
.
DE
CLA
RA
TIO
N D
E C
ON
FOR
MIT
E
CE
RT
IFIC
AT
E O
F C
ON
FOR
MIT
Y -
KO
NFO
RM
ITÄ
TS
ER
KLÄ
RU
NG
M
OU
VEX
sas
, ZI
La P
lain
e de
s Is
les
– 2
Rue
des
Caill
otte
s –
89 0
00 A
uxer
re F
ranc
e, d
écla
re q
ue l’
équi
pem
ent
suiv
ant
/ de
clar
es th
e fo
llow
ing
equ
ipm
ent /
erk
lärt
, das
s fo
lgen
de A
usrü
stun
g:
Mod
èle
:
N
° de
sér
ie :
(
A)
Rép
onda
nt a
ux s
péci
ficat
ions
indi
quée
s da
ns l’
ARC
N°
:
(B)
D
esig
natio
n /
Beze
ichn
ung
Seria
l N°
/ Se
rien
Nr
Ac
cord
ing
to t
he s
peci
ficat
ions
rec
orde
d in
the
ack
now
ledg
men
t of
ord
er N
°:
Ents
prec
hend
den
Spe
zifik
atio
nen
aus
AB-N
r :
Pour
la S
té M
OU
VEX
sas,
fai
t à
Auxe
rre
le :
Fo
r M
ouve
x sa
s co
mpa
ny –
Dat
e :
Fur
die
Fa M
ouve
x sa
s -
Dat
um :
Jean
-Fra
nçoi
s FO
UIN
- R
espo
nsab
le Q
ualit
é Q
ualit
y M
anag
er /
Qua
lität
sbea
uftr
agte
r II
___
G _
___
II _
__ –
T _
__
Tem
p M
ax p
rodu
it po
mpé
/ M
ax T
emp
Flow
/
Max
. T°
Med
ium
= _
____
_ °
C
Con
figu
rati
on :
P
ompe
/ C
ompr
esse
ur a
rbre
nu
Gro
upe
de p
ompa
ge /
de
com
pres
sion
Ko
nfig
urat
ion
(Pum
p /
Com
pres
sor
« ba
re-s
haft
»)
(P
umpi
ng U
nit
/ Co
mpr
esso
r U
nit)
(
Pum
pe /
Kom
pres
sor,
fre
ies
Wel
lene
nde
(P
umpe
n- /
Kom
pres
sora
ggre
gat)
Ty
pe /
Ger
ätea
rt :
P
ompe
à m
vt e
xcen
tré
(Ecc
entr
ic D
isc
Pum
p /
Ring
kolb
enpu
mpe
)
Pom
pe à
lobe
s (L
obes
Pum
p /
Dre
hkol
benp
umpe
) P
ompe
pér
ista
ltiqu
e (P
eris
talti
c Pu
mp
/ Sc
hlau
chpu
mpe
)
P
ompe
à p
alet
tes
(Van
es P
ump
/ Fl
ügel
zelle
npum
pe)
Pom
pe c
entr
ifuge
(Ce
ntrif
ugal
Pum
p /
Krei
selp
umpe
)
A
utre
pom
pe (
Oth
er P
ump
/ An
dere
Pum
pe)
Com
pres
seur
à V
is (
Scre
ws
com
pres
sor
/ Sc
hrau
benv
erdi
chte
r)
C
ompr
esse
ur à
pal
ette
s (V
anes
com
pres
sor
/ Fl
ügel
zelle
nver
dich
ter)
Re
froi
diss
eur
Hyd
raul
ique
(H
ydra
ulic
oil
cool
er /
Hyd
raul
ikkü
hler
)
CTRL
.D02
5 –
rév.
02 d
u 06
/06/
2012
– D
écla
ratio
n de
con
form
ité C
E-At
ex
*
(IN
ERIS
–Pa
rc T
echn
o At
ala
–60
550
Vern
euil-
en-H
alat
te –
Fran
ce).
P
age
1/2
12. CERTIFICATE OF CONFORMITY
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
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.
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
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)
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.
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
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)
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)
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
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)
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.
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)
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)
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)
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)
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)
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)
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)
• 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)
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)
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)
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)
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)
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
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
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)
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
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
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.
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
”.
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
”.
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.
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...
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).
35/35NT 1012-C00 11 13 Pump A18 A e
Es
t co
nfor
me
aux
disp
ositi
ons
suiv
ante
s :
Dir
ecti
ve
« M
AC
HIN
ES »
20
06/4
2/C
E et
au
x lé
gisl
atio
ns
natio
nale
s la
tra
nspo
sant
, po
rtan
t su
r le
s di
spos
itifs
de
sécu
rité
liés
aux
risqu
es
méc
aniq
ues
et
élec
triq
ues
appl
icab
les
aux
mac
hine
s to
urna
ntes
.
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
:200
9
Dir
ecti
ve
« A
TEX
»
94/9
/CE
du
23
mar
s 19
94
et
aux
légi
slat
ions
na
tiona
les
la
tran
spos
ant,
po
rtan
t su
r le
s ap
pare
ils
dest
inés
à
être
ut
ilisé
s en
at
mos
phèr
es
expl
osib
les.
Co
nfor
mité
ob
tenu
e pa
r ap
plic
atio
n de
s no
rmes
:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Cert
ifica
tion
ATEX
dél
ivré
e pa
r IN
ERIS
*, O
rgan
ism
e Ce
rtifi
cate
ur,
et
port
ant
le m
arqu
age
suiv
ant
: (C
)
L’éq
uipe
men
t dé
sign
é ci
-des
sus
doit
être
ut
ilisé
co
nfor
mém
ent
à l’u
tilis
atio
n qu
i en
a ét
é pr
évue
de
par
sa c
once
ptio
n et
sa
fabr
icat
ion,
et
con
form
émen
t au
x no
rmes
en
vigu
eur.
Nou
s, s
ouss
igné
s, d
écla
rons
que
l’éq
uipe
men
t co
ncer
né e
st c
onfo
rme
aux
Dire
ctiv
es
listé
es
ci-d
essu
s et
au
x no
rmes
ap
plic
able
s s’
y ra
ppor
tant
.
Is in
con
form
ity w
ith t
he p
rovi
sion
s of
the
fol
low
ing
Dire
ctiv
e:
«
MA
CH
INES
» D
irec
tive
200
6/42
/EEC
as
tran
spos
ed b
y th
e na
tiona
l le
gisl
atio
n, c
once
rnin
g sa
fety
equ
ipm
ents
and
arr
ange
men
ts
rela
tive
to
mec
hani
cal
and
elec
tric
ris
ks
appl
icab
le
to
rota
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
:200
9
« A
TEX
» D
irec
tive
94/
9/EC
(23
mar
ch 1
994)
as
tran
spos
ed b
y th
e na
tiona
l leg
isla
tion,
con
cern
ing
equi
pmen
t in
tend
ed t
o be
use
d in
ex
plos
ive
atm
osph
eres
. Co
nfor
mity
obt
aine
d by
app
licat
ion
of t
he
stan
dard
s :
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
ATEX
Cer
tific
atio
n de
liver
ed b
y IN
ERIS
*, N
otifi
ed B
ody,
and
with
the
fo
llow
ing
mar
king
: (
C)
The
equi
pmen
t in
dica
ted
abov
e m
ust
be
used
ac
cord
ing
to
the
fore
seen
use
by
its d
esig
n an
d its
man
ufac
turin
g, a
nd a
ccor
ding
to
the
curr
ent
stan
dard
s.
We,
un
ders
igne
d,
decl
are
that
th
e co
ncer
ned
equi
pmen
t is
in
co
nfor
mity
with
the
Dire
ctiv
es
liste
d ab
ove
and
in
the
appl
icab
le
stan
dard
s in
for
ce.
den
Best
imm
unge
n de
r na
chst
ehen
den
Rich
tlini
en e
ntsp
richt
:
„Mas
chin
en-R
icht
linie
“ 20
06/4
2/EE
C
wie
um
gese
tzt
im
natio
nale
n Re
cht
hins
icht
lich
der
Ausr
üstu
ngss
iche
rhei
t un
d Si
cher
heits
vork
ehru
ngen
bez
ogen
auf
mec
hani
sche
und
ele
ktris
che
Risi
ken,
die
für
rot
iere
nde
Mas
chin
en g
elte
n.
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
:200
9
„A
TEX
“ R
ich
tlin
ie 9
4/9/
EG (
23.
Mär
z 19
94)
wie
um
gese
tzt
im
natio
nale
n Re
cht
in
Bezu
g au
f Au
srüs
tung
en
für
den
Eins
atz
in
expl
osio
nsge
fähr
dete
r At
mos
phär
e.
Die
Ko
nfor
mitä
t ha
t G
eltu
ng
durc
h An
wen
dung
fol
gend
er N
orm
en:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Die
AT
EX-Z
ertif
izie
rung
w
urde
vo
n de
r be
nann
ten
Stel
le
INER
IS*
erte
ilt, u
nd m
it fo
lgen
der
Kenn
zeic
hnun
g:
(C)
Obe
n st
ehen
d be
zeic
hnet
e Au
srüs
tung
ist
ent
spre
chen
d de
m d
urch
Ko
nstr
uktio
n un
d Fa
brik
atio
n vo
rges
ehen
en V
erw
endu
ngsz
wec
k un
d en
tspr
eche
nd d
en g
elte
nden
Nor
men
ein
zuse
tzen
.
Die
U
nter
zeic
hner
er
klär
en,
dass
di
e be
zeic
hnet
e Au
srüs
tung
de
n ob
en
aufg
efüh
rten
Ri
chtli
nien
un
d de
n di
esbe
zügl
ich
gelte
nden
N
orm
en e
ntsp
richt
.
DE
CLA
RA
TIO
N D
E C
ON
FOR
MIT
E
CE
RT
IFIC
AT
E O
F C
ON
FOR
MIT
Y -
KO
NFO
RM
ITÄ
TS
ER
KLÄ
RU
NG
M
OU
VEX
sas
, ZI
La P
lain
e de
s Is
les
– 2
Rue
des
Caill
otte
s –
89 0
00 A
uxer
re F
ranc
e, d
écla
re q
ue l’
équi
pem
ent
suiv
ant
/ de
clar
es th
e fo
llow
ing
equ
ipm
ent /
erk
lärt
, das
s fo
lgen
de A
usrü
stun
g:
Mod
èle
:
N
° de
sér
ie :
(
A)
Rép
onda
nt a
ux s
péci
ficat
ions
indi
quée
s da
ns l’
ARC
N°
:
(B)
D
esig
natio
n /
Beze
ichn
ung
Seria
l N°
/ Se
rien
Nr
Ac
cord
ing
to t
he s
peci
ficat
ions
rec
orde
d in
the
ack
now
ledg
men
t of
ord
er N
°:
Ents
prec
hend
den
Spe
zifik
atio
nen
aus
AB-N
r :
Pour
la S
té M
OU
VEX
sas,
fai
t à
Auxe
rre
le :
Fo
r M
ouve
x sa
s co
mpa
ny –
Dat
e :
Fur
die
Fa M
ouve
x sa
s -
Dat
um :
Jean
-Fra
nçoi
s FO
UIN
- R
espo
nsab
le Q
ualit
é Q
ualit
y M
anag
er /
Qua
lität
sbea
uftr
agte
r II
___
G _
___
II _
__ –
T _
__
Tem
p M
ax p
rodu
it po
mpé
/ M
ax T
emp
Flow
/
Max
. T°
Med
ium
= _
____
_ °
C
Con
figu
rati
on :
P
ompe
/ C
ompr
esse
ur a
rbre
nu
Gro
upe
de p
ompa
ge /
de
com
pres
sion
Ko
nfig
urat
ion
(Pum
p /
Com
pres
sor
« ba
re-s
haft
»)
(P
umpi
ng U
nit
/ Co
mpr
esso
r U
nit)
(
Pum
pe /
Kom
pres
sor,
fre
ies
Wel
lene
nde
(P
umpe
n- /
Kom
pres
sora
ggre
gat)
Ty
pe /
Ger
ätea
rt :
P
ompe
à m
vt e
xcen
tré
(Ecc
entr
ic D
isc
Pum
p /
Ring
kolb
enpu
mpe
)
Pom
pe à
lobe
s (L
obes
Pum
p /
Dre
hkol
benp
umpe
) P
ompe
pér
ista
ltiqu
e (P
eris
talti
c Pu
mp
/ Sc
hlau
chpu
mpe
)
P
ompe
à p
alet
tes
(Van
es P
ump
/ Fl
ügel
zelle
npum
pe)
Pom
pe c
entr
ifuge
(Ce
ntrif
ugal
Pum
p /
Krei
selp
umpe
)
A
utre
pom
pe (
Oth
er P
ump
/ An
dere
Pum
pe)
Com
pres
seur
à V
is (
Scre
ws
com
pres
sor
/ Sc
hrau
benv
erdi
chte
r)
C
ompr
esse
ur à
pal
ette
s (V
anes
com
pres
sor
/ Fl
ügel
zelle
nver
dich
ter)
Re
froi
diss
eur
Hyd
raul
ique
(H
ydra
ulic
oil
cool
er /
Hyd
raul
ikkü
hler
)
CTRL
.D02
5 –
rév.
02 d
u 06
/06/
2012
– D
écla
ratio
n de
con
form
ité C
E-At
ex
*
(IN
ERIS
–Pa
rc T
echn
o At
ala
–60
550
Vern
euil-
en-H
alat
te –
Fran
ce).
P
age
1/2
12. CERTIFICATE OF CONFORMITY
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
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.
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
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)
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.
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
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)
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)
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
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)
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.
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)
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)
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)
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)
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)
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)
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)
• 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)
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)
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)
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)
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)
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
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
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)
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
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
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.
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
”.
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
”.
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.
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...
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).
35/35NT 1012-D00 11 13 Pump A31 A e
Es
t co
nfor
me
aux
disp
ositi
ons
suiv
ante
s :
Dir
ecti
ve
« M
AC
HIN
ES »
20
06/4
2/C
E et
au
x lé
gisl
atio
ns
natio
nale
s la
tra
nspo
sant
, po
rtan
t su
r le
s di
spos
itifs
de
sécu
rité
liés
aux
risqu
es
méc
aniq
ues
et
élec
triq
ues
appl
icab
les
aux
mac
hine
s to
urna
ntes
.
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
:200
9
Dir
ecti
ve
« A
TEX
»
94/9
/CE
du
23
mar
s 19
94
et
aux
légi
slat
ions
na
tiona
les
la
tran
spos
ant,
po
rtan
t su
r le
s ap
pare
ils
dest
inés
à
être
ut
ilisé
s en
at
mos
phèr
es
expl
osib
les.
Co
nfor
mité
ob
tenu
e pa
r ap
plic
atio
n de
s no
rmes
:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Cert
ifica
tion
ATEX
dél
ivré
e pa
r IN
ERIS
*, O
rgan
ism
e Ce
rtifi
cate
ur,
et
port
ant
le m
arqu
age
suiv
ant
: (C
)
L’éq
uipe
men
t dé
sign
é ci
-des
sus
doit
être
ut
ilisé
co
nfor
mém
ent
à l’u
tilis
atio
n qu
i en
a ét
é pr
évue
de
par
sa c
once
ptio
n et
sa
fabr
icat
ion,
et
con
form
émen
t au
x no
rmes
en
vigu
eur.
Nou
s, s
ouss
igné
s, d
écla
rons
que
l’éq
uipe
men
t co
ncer
né e
st c
onfo
rme
aux
Dire
ctiv
es
listé
es
ci-d
essu
s et
au
x no
rmes
ap
plic
able
s s’
y ra
ppor
tant
.
Is in
con
form
ity w
ith t
he p
rovi
sion
s of
the
fol
low
ing
Dire
ctiv
e:
«
MA
CH
INES
» D
irec
tive
200
6/42
/EEC
as
tran
spos
ed b
y th
e na
tiona
l le
gisl
atio
n, c
once
rnin
g sa
fety
equ
ipm
ents
and
arr
ange
men
ts
rela
tive
to
mec
hani
cal
and
elec
tric
ris
ks
appl
icab
le
to
rota
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
:200
9
« A
TEX
» D
irec
tive
94/
9/EC
(23
mar
ch 1
994)
as
tran
spos
ed b
y th
e na
tiona
l leg
isla
tion,
con
cern
ing
equi
pmen
t in
tend
ed t
o be
use
d in
ex
plos
ive
atm
osph
eres
. Co
nfor
mity
obt
aine
d by
app
licat
ion
of t
he
stan
dard
s :
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
ATEX
Cer
tific
atio
n de
liver
ed b
y IN
ERIS
*, N
otifi
ed B
ody,
and
with
the
fo
llow
ing
mar
king
: (
C)
The
equi
pmen
t in
dica
ted
abov
e m
ust
be
used
ac
cord
ing
to
the
fore
seen
use
by
its d
esig
n an
d its
man
ufac
turin
g, a
nd a
ccor
ding
to
the
curr
ent
stan
dard
s.
We,
un
ders
igne
d,
decl
are
that
th
e co
ncer
ned
equi
pmen
t is
in
co
nfor
mity
with
the
Dire
ctiv
es
liste
d ab
ove
and
in
the
appl
icab
le
stan
dard
s in
for
ce.
den
Best
imm
unge
n de
r na
chst
ehen
den
Rich
tlini
en e
ntsp
richt
:
„Mas
chin
en-R
icht
linie
“ 20
06/4
2/EE
C
wie
um
gese
tzt
im
natio
nale
n Re
cht
hins
icht
lich
der
Ausr
üstu
ngss
iche
rhei
t un
d Si
cher
heits
vork
ehru
ngen
bez
ogen
auf
mec
hani
sche
und
ele
ktris
che
Risi
ken,
die
für
rot
iere
nde
Mas
chin
en g
elte
n.
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
:200
9
„A
TEX
“ R
ich
tlin
ie 9
4/9/
EG (
23.
Mär
z 19
94)
wie
um
gese
tzt
im
natio
nale
n Re
cht
in
Bezu
g au
f Au
srüs
tung
en
für
den
Eins
atz
in
expl
osio
nsge
fähr
dete
r At
mos
phär
e.
Die
Ko
nfor
mitä
t ha
t G
eltu
ng
durc
h An
wen
dung
fol
gend
er N
orm
en:
NF
EN 1
127-
1:19
97
N
F EN
134
63-1
:200
9
NF
EN 1
3463
-5:2
009
Die
AT
EX-Z
ertif
izie
rung
w
urde
vo
n de
r be
nann
ten
Stel
le
INER
IS*
erte
ilt, u
nd m
it fo
lgen
der
Kenn
zeic
hnun
g:
(C)
Obe
n st
ehen
d be
zeic
hnet
e Au
srüs
tung
ist
ent
spre
chen
d de
m d
urch
Ko
nstr
uktio
n un
d Fa
brik
atio
n vo
rges
ehen
en V
erw
endu
ngsz
wec
k un
d en
tspr
eche
nd d
en g
elte
nden
Nor
men
ein
zuse
tzen
.
Die
U
nter
zeic
hner
er
klär
en,
dass
di
e be
zeic
hnet
e Au
srüs
tung
de
n ob
en
aufg
efüh
rten
Ri
chtli
nien
un
d de
n di
esbe
zügl
ich
gelte
nden
N
orm
en e
ntsp
richt
.
DE
CLA
RA
TIO
N D
E C
ON
FOR
MIT
E
CE
RT
IFIC
AT
E O
F C
ON
FOR
MIT
Y -
KO
NFO
RM
ITÄ
TS
ER
KLÄ
RU
NG
M
OU
VEX
sas
, ZI
La P
lain
e de
s Is
les
– 2
Rue
des
Caill
otte
s –
89 0
00 A
uxer
re F
ranc
e, d
écla
re q
ue l’
équi
pem
ent
suiv
ant
/ de
clar
es th
e fo
llow
ing
equ
ipm
ent /
erk
lärt
, das
s fo
lgen
de A
usrü
stun
g:
Mod
èle
:
N
° de
sér
ie :
(
A)
Rép
onda
nt a
ux s
péci
ficat
ions
indi
quée
s da
ns l’
ARC
N°
:
(B)
D
esig
natio
n /
Beze
ichn
ung
Seria
l N°
/ Se
rien
Nr
Ac
cord
ing
to t
he s
peci
ficat
ions
rec
orde
d in
the
ack
now
ledg
men
t of
ord
er N
°:
Ents
prec
hend
den
Spe
zifik
atio
nen
aus
AB-N
r :
Pour
la S
té M
OU
VEX
sas,
fai
t à
Auxe
rre
le :
Fo
r M
ouve
x sa
s co
mpa
ny –
Dat
e :
Fur
die
Fa M
ouve
x sa
s -
Dat
um :
Jean
-Fra
nçoi
s FO
UIN
- R
espo
nsab
le Q
ualit
é Q
ualit
y M
anag
er /
Qua
lität
sbea
uftr
agte
r II
___
G _
___
II _
__ –
T _
__
Tem
p M
ax p
rodu
it po
mpé
/ M
ax T
emp
Flow
/
Max
. T°
Med
ium
= _
____
_ °
C
Con
figu
rati
on :
P
ompe
/ C
ompr
esse
ur a
rbre
nu
Gro
upe
de p
ompa
ge /
de
com
pres
sion
Ko
nfig
urat
ion
(Pum
p /
Com
pres
sor
« ba
re-s
haft
»)
(P
umpi
ng U
nit
/ Co
mpr
esso
r U
nit)
(
Pum
pe /
Kom
pres
sor,
fre
ies
Wel
lene
nde
(P
umpe
n- /
Kom
pres
sora
ggre
gat)
Ty
pe /
Ger
ätea
rt :
P
ompe
à m
vt e
xcen
tré
(Ecc
entr
ic D
isc
Pum
p /
Ring
kolb
enpu
mpe
)
Pom
pe à
lobe
s (L
obes
Pum
p /
Dre
hkol
benp
umpe
) P
ompe
pér
ista
ltiqu
e (P
eris
talti
c Pu
mp
/ Sc
hlau
chpu
mpe
)
P
ompe
à p
alet
tes
(Van
es P
ump
/ Fl
ügel
zelle
npum
pe)
Pom
pe c
entr
ifuge
(Ce
ntrif
ugal
Pum
p /
Krei
selp
umpe
)
A
utre
pom
pe (
Oth
er P
ump
/ An
dere
Pum
pe)
Com
pres
seur
à V
is (
Scre
ws
com
pres
sor
/ Sc
hrau
benv
erdi
chte
r)
C
ompr
esse
ur à
pal
ette
s (V
anes
com
pres
sor
/ Fl
ügel
zelle
nver
dich
ter)
Re
froi
diss
eur
Hyd
raul
ique
(H
ydra
ulic
oil
cool
er /
Hyd
raul
ikkü
hler
)
CTRL
.D02
5 –
rév.
02 d
u 06
/06/
2012
– D
écla
ratio
n de
con
form
ité C
E-At
ex
*
(IN
ERIS
–Pa
rc T
echn
o At
ala
–60
550
Vern
euil-
en-H
alat
te –
Fran
ce).
P
age
1/2
12. CERTIFICATE OF CONFORMITY
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
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
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.
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.
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.
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.
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
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.
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
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.
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
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
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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
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
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
3/8NT 1068 12 13 ATEX temperature limiting device
(biblades probe) e
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)
4/8NT 1068 12 13 ATEX temperature limiting device
(biblades probe) e
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
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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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