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DAE SUNG
Mono Flex Pump
Users Manual
DAESUNG Industry Company Ltd.
pumps with stuffing box
Applies to DAE SUNG series "DS-R Standard Type" pumps, excl.
Mono Flex Pump Manual Edition R1.4 English
Table of Contents
Headline - Issues adressed - Page
Safety General
Before operating the pump
Mounting
Warrenty
Application When to use the Mono Flex ?
Specifications Function
The DAESUNG Mono Flex Pump range
Codefication
Name plate
The pipe system NPSHa
Minimizing pressure loss
Ensuring priming
Installation Allignment
Pump & pipe connection
Start-up
Shut-down
Maintenance Dismantling & Assembly
General in line maintenance
Overhaul
Storage
ATEX requirements
Technical specifications
Trouble shooting
Cross sectional drawing (spare parts)
2
4
4
4
5
6
6
7
8
10
11
11
12
12
12
Electric wire connection 13
13
14
15
16
21
28
28
29
29
32
Motor manual (if applicable)Enclosures Enclosed
Gearmotor manual (if applicable) Enclosed
Flexible coupling manual (if applicable) Enclosed
Heating element manual (if applicable) Enclosed
Special seal system manual (if applicable) Enclosed
Other accessories (if applicable) Enclosed
Pump specification chart Enclosed
3
Your local authorized representative:
E-mail: flex@flexpump.co.kr
www.flexpump.co.kr
Fax: +82 2 2681 1496
Tel. +82 2 2681 1468~9
KOREA
Yang Choen Gu, SEOUL
763-8 Shin Jung 3 Dong
DAE SUNG Industry Pump Company Ltd.
Manufacture Factory
35
34
33Dimension of ImpellerMaintenance
Dimension of each model
Performance Curve
Specification of mono pump 39
4
Safety- General
Before start-up, make sure that all drive equipment guards are located and secured properly.
Before dismantling: Know the liquid pumped with the pump, and take the neccesary precautions.
Make sure that the drive unit has been made non-operational.
Pressure must be vented from pump casing and valve
Failure to comply to the above safety guidelines, may result in serious injury or death !
- Before operating the pumpSafety
(if equipped with such).
- MountingSafety
The mounting of the pump or pump unit should be solid and stable. Pump orientation must
be considered in relation to drainage / cavity ventilation requirements. Once mounted,
shaft drive elements must be checked for correct alignment. Rotate pump shaft by at least
Before operating the pump, be sure that it and all parts of the system to whichit is connected are clean and free from debris and that all valves in the suction
and discharge pipelines are fully opened. Ensure that all piping connecting to
the pump is fully supported and correctly aligned with its relevant connections.
potential to be an ignition source.could result in unexpected mechanical contact in the pump head and has the
Misalignment and/or excess loads will cause severe pump damage. This
excessive loading and will create high temperatures and increased noise emissions. Do
one full revolution to ensure smoothness of operation. Incorrect alignment will produce
that could cause a spark.
necessary to earth the pump head to avoid the bulid up of a potential charge difference
not use any drive arrangements that cause side loading of the drive shaft. It may also be
5
Warrenty
DAE SUNG Industry Pump Co., Ltd. warrents all products manufactured by it to be free
from defects in workmanship and/or material, for a period of two (1) years from date of
start-up, provided that in no event shall this warrenty extend more than eighteen (18)
months from the date of shipment from DAE SUNG Industry Pump Co., Ltd.
If, during said warrenty period, any products sold by DAE SUNG Industry Pump Co., Ltd. prove to be defective in workmanship and/or material under normal use and
service, and if such products are returned to DAE SUNG Industry Pump Co., Ltd.
facilities in Korea, transportation charges prepaid, and if the products are found by DAE
SUNG Industry Pump Co., Ltd. to be deffective in workmanship and/or material, they
will be replaced or repaired free of charge, FOB Busan KOREA.
DAE SUNG Industry Pump Co., Ltd. assumes no liability for consequential damages of
any kind and the purchaser by acceptance of delivery assumes all liability for the
consequences of the use or misuse of DAE SUNG Industry Pump Co., Ltd. products, by
the purchaser his employees or others.
DAE SUNG Industry Pump Co., Ltd. will assume no field expense for service or parts
unless authorized by it in advance.
Equipment and accesories purchased by DAE SUNG Industry Pump Co., Ltd. from
outside sources which are incorporated into any DAE SUNG Industry Pump Co., Ltd.
product are warrented only to the extent of and by the original manufacturer warrenty
or guarentee, if any.
THIS IS DAE SUNG Industry Pump Co., Ltd. SOLE WARRENTY AND IN LIEU
OF ALL OTHER WARRENTIES EXPRESSED OR IMPLIED, WHICH ARE HEREBY
EXCLUDED, INCLUDING IN PARTICULAR ALL WARRENTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
NO OFFICER OR EMPLOYEE OF DAE SUNG Industry Pump Co., Ltd. IS
AUTHORIZED TO ALTER THIS WARRENTY.
6
Application- When to use the Mono-Flex ?
The Mono-Flex is designed specifically for applications where you face the following extreme conditions:
* Waste-water with sludge, Excretions from farms.
* Sewage disposal tank, Wetted soil from foreshore.
* Sulfuric acid, Ferrous sulfate, Cuprous sulphide, Hydrochloric acid,
Ferrous chloride, Nitric acid, dyes, Phosphoric acid, Acetic acid, Caustic soda and other Chemicals.
* Abrasive medias.
* Lubricant, Oil, DOP, Various waste oil, Petroleum oil, Light oil, Thinner,
Gasoline, Cutting oil, Fresh oil, Rolling oil and Other oils.
- Function
Specifications
1. The M-flex pump is a positive-displacement pump taking advantage of centrifugal force,
which projects liquid when its impeller wings are bended while the wings embracing
liquid revolve.
2.
As the space between first wing and the interior surface of the pump gradually expands,
3. It facilitates low rpm pumping under its repeative operation. A constant volume can be
pumped by adjusting inflow volume with a ball valve attached to the inlet, and a constant
* Paste, Salted fish, Salted shrimps, Milk, Beverage.
it sucks in liquid. While continuing revolution, the wing projects out the liquid, starting
from fourth wing position, and then as the space gradually contracts,
the wing throws out the remainder liquid while being bended.
volume can be transferred by adjusting the rpm.
7
Specifications- The DAESUNG Mono pump range.
Capacity up to 97.5m3/h.(pure flow rate)
Solids up to 40mm.
Operating pressure at 3 Bar.(Max up to 6 Bar)
Viscosity up to 50,000cp.
Operating Temperatures at 70deg.C.( Shot-term Operating at 120deg.C.)
Suction up to 4 m ( 9m when wetted)
Seal systems: Dynamic seals: Double mechanical seals or Single mechnical seals.
Static seals: O-rings.
The dynamic seals run in a lubricating fluid, to remove leaks and lubricate sliding surfaces.As static seals, the following are offered: = NBR, Viton and EPT.
Materials of Casing and Shaft: FCD45, SUS304, SUS316, SUS316L, Alloy-20, SR-50A,
Kinds of Impellers.
The DAE SUNG DSM- pump range is built up around several sizes and configurations.
Many different configurations can be used, to solve the specific application at hand.
Please contact your nearest DAE SUNG authorized dealer if you wish to use your
Mono Flex for other purposes than orginally designed for.
HastelloyB, C, CD4MCu, Bronze and available in other special material.
- N-Rubber : usable for transferring general water, sea water, soil- and waste-water, Excretions, Mud, Sludge, Shampoo, Rinse, Detergent and bubble.- U-Rubber : usable for transferring lubricant, Oil, DOP, Waste Oil, Vinegar-Mixed soy sauce, Vvinegar, Salted fishes and liquids requiring nontoxity, and for phamaceutical and food industries.
- H-Rubber : usable for transferring petroleum oil Light oil, Thinner, Gasoline, Fresh Oil, Cutting Oil, Paint, Alcohol, Animal- and Vegetable-oil, beef tallow and other various kinds of oil.
- F-Rubber : usable for transferring Sulfuric acid, Cuprous sulphide, Ferrous Sulphide, Hydrochloric acid, Ferrous chloride, Nitric acid, Dyes, Phosphoric acid, Acetic acid, Caustic soda and other Chemicals.
8
When requesting for details on a supplied pump, the serial number is important. Allways
state the serial number, to ensure that you get the correct informations. The serial number
is stated on the pump name plate, but is also punched into the top surface of the pump
casing (between the two ports).
Below you will find the DAE SUNG codefication system, which will allow you to know the
exact specifications on your pump.
Example code
DS-R25BAANAC-0513220BA-001
Port / Flange connection ( C : Flanges )
Insert Type (A : Double Cut)
Impeller Insert Material (A : Bronze)
Shaft materials (A : Stainless steel SUS304 / ANSI304)
Wetted materials (C : Stainless steel SUS304 / ANSI304)
Power Joint Type(A : Shaft Coupling Type)
Seal Stuffing Box Type(B : Closed Type filled Seal Lube Oil)
Heating
(0 : No heating)
Casing Cover O-Ring(2 : O-rings Viton)
(2 : O-rings Viton)Static seal system
Seal system
(3 : Sic/Sic)-Secondary
Seal system -Primary
(1 : Mechanical
seal TC/TC)
- Codefication
Specifications
Impeller Material (N : N-Rubber)
1
19
14
13
17
17
2
10
19
14
7
2
15
8
DAE SUNG Mono-Flex Codefication & Standards.
Please confirm following model code system. And comment to us.Example below: DDSR25-BAANAC-0513220BA-001
Code. Description
001 Special features:
A Power Joint Type A=Shaft Coupling Type B=Motor Direct TypeC=Reducer Direct Type X=Non-Standard
B Seal Stuffing Box Type A = Open Type B = Closed Type filled Seal Lube Oil(Industrial)C = Closed Type filled Seal Lube Oil(Food) X = Non-Standard
0 Heating: 0 = No heating 1 = Heating jacket for heating fluid2 = Electrical heating 9 = Non-standard heating system
Casing Cover O-Ring 1 = O-rings NBR 2 = O-rings Viton3 = O-rings EPDM 4 = Capsule Type Teflon O-rings9 = Non-standard Casing O-Ring
Static seal system: 1 = O-rings NBR(Max. 10 barg ) 2 = O-rings Viton(Max. 10 Barg)3 = O-ring EPT(Max. 10 Barg) 9 = Non-standard static seal system
Seal system - Secondary 0 = No secondary seal used 1 = Mechanical seal: Ceramic/Carbon2 = Mechanical seal: TC/TC 3 = Mechanical seal: Sic/Sic4=Lip Seal 9 = Non-standard seal
Seal system - Primary seal 1 = Mechanical seal: TC/TC 2 = Mechanical seal: Sic/Sic3 = Non-standard mechanical seal 4 = Stuffing box (gland packing), PTFE-coated5 = Non-standard Stuffing box (gland packing) 6 = Lip seal system9 = Non-standard lip seal system
Pressure rating: The number states the Pdiff. max in bar´s.
Wetted materials: A = Cast Iron (FCD45) B = Bronze(Casing,Cover & Rear Cover) C = Stainless Steel SUS304 / AISI304 D = Stainless Steel SUS316 / AISI316
E = Stainless Steel SUS316L / AISI316L X = Non-standard materials
Shaft Mat'l A = Stainless Steel SUS304 / AISI304 B = Stainless Steel SUS316 / AISI316C = Stainless Steel SUS316L / AISI316L D = Stainless Steel 420J2E= Steel X = Non Standard Mat'l
N Flexible Impeller Mat'l N = N-Rubber H = H-RubberF = F-Rubber U = U-RubberC = C-Rubber X = Other
A Impeller Insert Mat'l A = Bronze B = SUS304C = SUS316 X =Non-Standard Mat'l
Insert type: A =Double D-Cut B = SerrationC = Spline X = Non-standard
Port / Flange connection: A = Flanges acc. to DIN 2084 B = Threaded connection, RG/WPTC = Flanges acc. to ANSI B16.1 / B 16.5 D = Ferrule Connection.X = Non-standard connections
Pump- and port size: R-10,15,20,20FW,25,25SW,32,32FW,40,40SW,50,50SW,65,65FW,65SW,80SW,100FW,120FW,120SW,150FWAAA = Non-standard pump- and/or port size.
DS Pump manufacturer and
type:
13
2
CodesThree digit extra serial number, that may be de-coded by contacting DAE SUNG.
2-0
5
DAE SUNG Mono-Flex
Cㅡ
BA
AR
25
9
Specifications- Codefication
10
Specifications- Name plate
DS-R25BAANAC-0513220BA-001
DAE SUNG INDUSTRY PUMP
11.6~928.5 cc/Rev.
DS-R10~R150FW
0~30kg/cm
10A~125A
Serial No.
Diff.Press
Port Size
Capacity
Model
2
kg/cm
45.5
25
5
DS-R25
cc/Rev.
mm
2
Date
Production Date
Please confirm model code system.( 9 page)
05. 10.
PTC/SLS
ISD
INR
Model Type
Industry
Standard Type
Coupling Type
Direct
Geard Moter
Geard Motor
Direct
Coupling Type
Standard Type
Sanitary
ISD
ISG
ICD
ICG
SSD
SSG
SCD
SCG
Seal Type
Type
Seal Type
Imp. Mat.
Primary Seal System
Secondary Seal System
TC;TC Mechanical Seal
Sic;Sic Mechanical Seal
Teflon packing
Special packing
Lipseal (Teflon)
Ceramic;Carbon Mechanical seal
TC;TC Mechanical Seal
Sic;Sic Mechanical Seal
Lipseal (Teflon)
Impeller Mat.
N-Rubber
H-Rubber
F-Rubber
U-Rubber
CR-Rubber
By special order
PTC
PSC
PTP
PSP
PLS
SCC
STC
SSC
SLS
INR
IHR
IFR
IUR
ICR
IBS
Refer to below nomenclature.
Refer to below nomenclature.
Refer to below nomenclature.
Every Lobe Flex pump is equipped with the following name plates:
Standard name plate.
MADE IN
KOREA
Geard Moter
Direct
Geard Moter
Direct
11
The pipe system- NPSH A
The DAE SUNG DS-R is normally used in medium to high viscosity applications. This
makes it neccesary to ensure that the media source is located close to the pump, feeding by
gravity, or that an in-feed device is used.
As a "rule of thumb", the systems NPSHA (Net Positive Suction Head) should be no less than
7mlc. If less than this value, the pump may cavitate; the pump is being "starved". This will
increase wear, as this means that intermittent dry-running will occur. The DS-R is capable of
withstanding this, but it will increase the wear rate and power cost for no reason.
The road to a low "Life Cycle Cost" (LCC):
* Use large diameter pipe.
* Use as few bends and fittings as possible.
* Use large radius bends.
* Avoid unneccesary restrictions on the suction side.
Contact your DAE SUNG representative for determining the NPSHA of your pipe system
- Minimizing pressure lossThe pipe system
Minimizing pressure loss is essential. There is nothing to loose in working hard to obtain the
lowest possible pressure - there is everything to win:
Bigger pipe diameter, but with a lower pressure rating: a cost effective pipe system.Less power consumption.Less noise.
Higher safety.Less wear.
Smaller, and less costly, pump unit may be used.
Setting up the correct pipe system is a "once in a lifetime" expenditure. The electricity and the
spares parts needed, will be a life-time on-going cost. Minimize pressure, and you will
minimize running cost in the complete system life span.
12
The pipe system- Ensure priming
- Alignment
Installation
When facing pipe systems with long and restricted suction lines, a "S-pipe" may be required on
the suction side of the pump. This will ensure that the pump is allways liquid filled at start-up,
and priming will be ensured.
Installation
- Pump & Pipe connection
All DAE SUNG pump units are supplied alligned on a U-channel base frame - unless
otherwise specified by the user.
Despite the use of a very rigid base frame design, some flexing may have occured during
transportation, as well as when being mounted on the typical concrete base.
Therefore, the pump unit components must be alligned, so that the flexible coupling
connecting drive and pump will not be overloaded, as well as to minimize stress imposed on
each component.
The alignment of the pump and drive are done by using a straightedge on the coupling
half-parts.
The deviation must not exceed 0.05mm. The alignment is done by inserting / removing shims
underneath the component.
The axial clearance must be 3mm between the two shaft half-parts.
Avoid to put any uneccesary stress on the pump and pipe system, when connecting the two.
Make sure that pipe and pump are alligned properly.
Use bolts of quality 4.6 (yield stress), to avoid overstressing especially cast iron flanges on
the pump. The bolts must be tightened uniformly.
Bolt torque:
Bolt size
- M12
- M16
- M20
Cast Iron
30Nm
75Nm
145Nm 385Nm
200Nm
80Nm
Steel / Stainless Steel
For sanitary application. we used the Ferrule connect, DIN union and SMS union.
Make sure of Sanitary port type, dimensions and connection of piping.
13
Installation- Electric wire connection
Start-up
Make sure that the pump unit is electrically connected, by a skilled certified electrician.
Wrong direction of rotation may be caused the incorrect connection of electric wires.
Rubber Flexible Connector
Flexible Joint
Lubricant & cooling
Gear oil drain plug
Lubricant & cooling levelGear oil
Check wiring of electric wire
Check the voltage
220V / 380V
Sanitary SUS Joint
14
Shut-down
After start-up, the following must be checked:
1. There is flow according to initial calculations.
2. There is pressure within the possibilities of the pump, and the initial calculations/ estimates.
3. There is no cavitation (knocking sounds may indicate cavitation).
4. There is not excessive power consumption.
5. The seal fluid pressure is close to atmospheric pressure, if fitted with a pressure gauge.
Ensure that fluids will not solidify inside the pump casing, as this may cause damage when
re-starting. Fluids can be drained out of the drain mounted in the bottom af the casing.
Close off the suction side valve, in order to avoid the inlet pressure making the pump rotate.
11. Correct direction of rotation are ensured (jog the pump before start-up to check).
10. That monitoring and safety systems are engaged and functionable.
9. That valves on suction- and pressure side has been opened.
8. That the pump casing is liquid filled.
7. That a safety valve is fitted on the pressure line.
6. The seal fluid level pressure gauge, if fitted, are mounted correctly.
5. The temperature sensor, if fitted, are mounted correctly.
4. The gearbox (gearmotor) is filled with the correct grade of oil, to the correct level.
3. The external seal flushing system, if fitted, is working.
2. The seal fluid chamber is filled with the correct grade of fluid, to the correct level,
1. The pump gearbox is filled with the correct grade of oil, to the correct level,
Before the start-up, the following must be checked:
using the level glass.
using the level glass.
12. Don't dry running over 30 seconds.
15
Maintenance
- Dismantling & Assembly
Before any maintenance takes place:
Shut down the system. Make sure that power is not connected, and can not accidently be
re-connected. The power switch MUST be physically locked.
Close shut-off valves on both sides of the pump.
Wear protective clothing and googles, if required due to the pumped media.
Turn off heating systems, in time for the system to cool down.
All maintenance work should be carried out by skilled craftsmen only.
Comply to the general DAE SUNG INDISTRY PUMP CO., LTD. safety guidelines. See the chapter "Start-up" for locations of fluids, and levels.
Failure to comply to the above safety guidelines, may result in serious injury or death !
When to replace parts, are determined by the performance of the pump. If the performance
drops to an unacceptable level, replacements must take place. When the user has gained
experience with the application, a fixed "Time Between Overhaul" (TBO) can be set.
The maintenance can be divided into two categories and subcategories:
1. General in-line maintenance.
1A). Replacing rotors.
1B). Replacing dynamic seals (excl. shaft oil seal, aft section).
2. Overhaul. The pump is taken out of the pipe system.
2A). Rebuilding the pump: rotors, gearbox, seal systems e.t.c.
Before assembly, all components must be thoroughly cleaned, leaving no metal or lubricants behind.
In the following text we will show how these tasks are best performed, with a minimum of
down-time. Please note, that DAE SUNG service staff will allways be able to assist
you on-site, to minimize the total cost involved in any maintenance work.
16
1A). Replacing Impeller.-Industry Type
new impeller.
Extract the used impeller, and prepare the
extract o-ring.
Extract the cover from casing, also
5
Untighten the front screws.
3
1
Pull out the used impeller.
6
Pull out the screws.
2
4
- General in-line maintenance
Maintenance
17
1B). Replacing Impeller.-Sanitary type
new impeller.
Extract the used impeller, and prepare the
extract o-ring.
Extract the cover from casing, also
5
Untighten the clamp screws.
3
1
Pull out the used impeller.
6
2
4
- General in-line maintenance
Maintenance
1
2
34
56
Unscrew the screws.
The casing detach from the casing rear cover.
Unscrew the screws of the retainer due to replace
Pull out the seal parts on the shaft.
Also pull out the o-rings from groove of housing.
Detach the casing rear cover from housing.
18
1C). For replacing dynamic seals (Industry)
the seal.
12
34
56
Unscrew the clamp screw due to detach.
Extract the front cover and o-ring.
Unscrew the screws due to detach the rear cover
Extract the rear cover and o-ring.
Detach the casing and impeller from housing.
19
1D). For replacing dynamic seals (Sanitary)
from the housing.
20
Drain out the dynamic seal lubricant from the seal housing before replacing the dynamic seal.
PLEASE NOTE ; If the seals are to be re-used, be very carefull not to damage the sliding
surfaces. Do not touch the sliding surfaces with you bare fingers; use clean rubber gloves to
avoid any grease on the surfaces. Any grease left behind my burn solid onto the surfaces and cause leaks.
Fill-up with lubricant, and perform the procedures described in the chapter "Start-up". For
the first one hour of operation, the pump should be monitored to detect any leak.
1Ball Bearing
Oil Seal
Shaft
Ball Bearing
2
Mount oil seal, shafts in the bearing housing.
Press ball bearings onto shafts.
Oil seal
Snap Ring
Mount the snap-ring in the assigned groove of housing. And mount the oil-seal onto the shaft.
21
To perform a complete overhaul, the pump must be brought off-line. The overhaul
procedure should take place in a heated and ventilated work shop. The workshop must
contain standard tools, as well as preferably a bench press for installing bearings.
- Overhaul
Maintenance
Bearing Housing
3
Mount mechanical seal set onto shafts.
Mount the seal, o-ring, retainer on the rear cover.And tighten the screws.
Mechanical Seal
Screw
Retainer Ring
Seal
4Casing Rear Cover
?
22
5
Mount the O-rings, Casing Rear Cover on the
Mount the casing on the casing rear cover.
Housing
Housing
6
Casing Rear Cover
housing.
Coil SpringCasing
23
O-ring
7
Tighten the screws due to fix the casing.
Put in the impeller which before to bend for
Casing
8
Screw
Impeller
?!
DAE SUNG PUMP Co., ltd
24
fit in the casing.
9
Mount the O-ring, Front cover in the casing.And tighten the screws to fix the front cover.
Front Cover
Screw
O-ring
25
Repair Tool
Oil Cap
26
Sanitary type
o-ring, front cover. Tight the clamp due to fix.
Put the impeller in the casing.And mount the
Mount the o-ring, rear cover on housing.
Mount the oil-seal, mechanical seal onto shaft.
3
Press ball bearings onto shafts.
2
1
And tight the screws due to fix.
- Assemble
Maintenance
Mount oil seal, sanp ring, shafts in the housing.
Attach the casing on the housing.
27
Maintenance
- Storage
If Mono pump is stored for more than 3 months, its impeller must be pulled out.
When pumping the pump with impeller which be stored for more than 3 months, its problem
be happened. When the impeller input in the pump, need careful job for rotating direction.
About the assembly of impeller, you can find the page of Overhaul.
Especially, In humid area, if pump is stored for more than 6 months, independently, the pumps
be painted for rust resisting. That need the notify for application to be used.
28
Technical specifications.
90%egree of filling
Seal fluid amount:
Trouble shooting
When facing problems with the pumping system, it is essential to work methodically
towards finding the cause. Each potential cause must be investigated at a time.
The following initial questions must be raised:
Did the problem arise after changes in the pumped media properties ?
Did the problem arise after changes to pump and/or pipe system ?
Did the problem arise after changes to the drive system ?
If you can answer "yes" to any of the above: go back to the old set-up, and contact your
closest DAE SUNG distributor for advice on your new application.
If you can answer "no" to all of the above, please proceed with the below described
trouble-shooting.
29
Problem Cause(s) Solution (s)
Pump not turning.
Drive not working. Check fuses and driver
electrical connections.
Key sheared, in impellers and/or
pump gear.
Replace key.
Slipping drive belts. Adjust belts.
Shafts or gears sheared. Replace.
No flow, but pump turning.
Wrong way of rotation. Reverse rotation.
Inlet pipe system clogged. Clean pipes, valves, filters e.t.c.
Inlet valve closed. Open valve, check pump for
damages.
Air leaks due to bad seals /
pipe system.
Replace seals find leaks in
pipe system (false air beingsucked in).
Increase speed if possible
considering the fluid
properties, fill suction line, install foot valve.
Pump speed to low.
Liquid is draining. Use foot or checkvalve.
Gas comes out of liquid
solution.
Bleed lines near pump must be
installed.
Clearances between impeller and
front cover / rear cover to big.
Increase pump speed, rebuild
pump.
NPSHa to low. Move pump closer to source,
use large diameter pipes,
fewer pipe fittings. Select
larger pump.
Relief valve installed in
pressure pipe open.
Adjust valve.
Fluid vaporizing.
Suction side clogged. Clean.
NPSHa to low. Move pump closer to source,
use large diameter pipes,
fewer pipe fittings. Select
larger pump.
Flow lower than calculated.
Speed to low. Increase speed.
Air leaks due to bad seals /
pipe system.
Replace seals, find leaks in pipe
system (false air being sucked
in)
Viscosity too high. Use larger pump and/or lower
speed (decreased flow)
30
Problem Cause(s) Solution (s)
Worn out pump. Rebuild or replace.
Pump draws excessive current.
Dissolved gas.
Too high pressure.
Increase clearances.
Abrasive fluids. Decrease speed, decrease
Flow lower than calculated.
Pressure to high (increased slip) Modify pressure pipe.
Noise
Cavitation (NPSHa too low). Reduce speed, use larger
pump, modify pipe system.
Air or gas in pipe system. Remove leaks.
Reduce pressure, reduce
speed, modify pipe system.
Rotor touches casing/front
cover / rear cover.
Correct clearances.
Pressure too high. Modify pressure pipe system,
decrease speed.
Worn bearings or gears. Rebuild.
Rotor to rotor contact. Rebuild.
Modify pressure pipe system,
decrease speed.
Drain pump after use, flush
after use, install heating.
Fluid sedimentation at standstill.
Fluid(particle) build-up on
rotor / front cover / rear
cover / casing.
Service life too short.
pressure, better materials ofconstruction.
Corrosion. Upgrade materials ofconstruction.
31
Cross sectional drawing (spare parts)
*Industry Type
*Sanitary Type
1
1
2
2
3
3
3
3
4
4
7
8
12
10
11
13 17
14
15
16
18
19
20
21
21
11
13
18
17
24
25
26
23
5
6
9
5
6
22
27
27
28
28
32
Cross sectional drawing (spare parts)
39 Screw, in-hex
Casing (Industry)
O-ring
Screw
Casing rear cover (Industry)
Screw
Front Cover (Industry)
Casing rear cover (Sanitary)
Key
Screw
Clamp Screw
Front Cover (Sanitary)
Casing (Sanitary)
Single Mechanical Seal Assembly
Screw
O-ring
Impeller
Cam
Oil Cap21
27
28
24
25
26
23
22
15
18
20
19
17
16
12
14
13
11
10
O-ring
1
2
1
1 set
1
1
1
1
1
1
5
1
1
1
5
1
1
1
Snap-Ring
Retainer Ring
Double Mechanical Seal Assembly
Oil-Seal
Oil-Seal
Drive Shaft
Bearing Housing Body
DESCRIPTION
Ball Bearing3
6
8
7
5
4
ITEM
1
2
2
1
1
1 set
1
4
Qty.
1
1
STSDS-R456-9
ABSDS-R456-21
STS
STS
DS-R456-27
DS-R456-28
DS-R456-25
DS-R456-24
DS-R456-23
DS-R456-22
DS-R456-26
STS
STS
STS
TC, Sic, etc.STS
N,H,F,U-Rubber
DS-R456-15
DS-R456-20
DS-R456-19
DS-R456-18
DS-R456-17
DS-R456-16
DS-R456-14
DS-R456-13
DS-R456-12
DS-R456-11
DS-R456-10
STS
NBR
STS
STS
STS
STS
STS
NBR
NBR
STS
MATERIAL
DS-R456-3
DS-R456-8
DS-R456-7
DS-R456-6
DS-R456-5
DS-R456-4
DS-R50DX-2
DS-R456DX-1
PART NO.
NBR
S45C
TC, Sic, etc.
NBR
SK5M
STS
STS
1
33
Maintenance
- Dimension of Impellers
995 x 45DS-25SW
DS-R40
DS-R40SW
DS-R32
DS-R32FW
127 x 57
95 x 63
81 x 54
95 x 54
9
9
8
9
DS-25
DS-20FW
DS-10
Pump Model
DS-15
D x W (mm)
65 x 50
65 x 39
52 x 22
56 x 37
7
7
6
Blade
7
9DS-R80SW 163 x 102
163 x 145
163 x 122
200 x 133
200 x 158
DS-R120FW
DS-R100FW
DS-R150FW
DS-R120SW 10
10
9
9
127 x 69
163 x 85
127 x 80
DS-R65SW
DS-R65FW
DS-R50
DS-R50SW
95 x 90
9
9
9
9
D mm
DS-R150SW
DS-R200FW
290 x 165 9
290 x 225 9
D x W (mm)Pump Model Blade
DS-R1S
DS-R1.5S
DS-R2S
DS-R2.5S
81 x 54
95 x 63
121 x 89
127 x 100
8
9
9
12
W mm
34
Maintenance- Dimension of Each Models
60
70
70
70
DS-R50SW 120
DS-R150FW
DS-R120SW
DS-R100FW
DS-R80SW
DS-R65SW
DS-R65FW 120
MODEL
DS-R32FW
DS-R25SW
DS-R20FW
DS-R40SW
DS-R40FW
100
100
120
100
B
2575
A C
32
2237
22
32
2237
37
1842
D E F G
units : mm
H I J K L M N 2-PS 4-fl
190
190
190
190
190
140
140
140
140
140
90
90
90
48
48
48
68
32
42
60
75
75
75
95
95
120
160
160
170
170
102
102
102
112
112
112
132
132
132
160
160
5 x 5 29
42
42
42
66
66
66
45
50
50
50
50
55
78
78
78
95
95
95
237
264
273
282
323
335
351
440
457
477
485
511
32
37
41
46
43
49
57
63
71
81
92
98
9
11
11
11
13
11
13
30
30
30
35
35
35
42
42
42
42
42
90
90
90
70
70
70
50
140
140
140
140
140
68
68
68
68
42
42
42
42
95
80
7 x 7
7 x 7
7 x 7
10 x 8
10 x 8
10 x 8
12 x 8
12 x 8
12 x 8
12 x 8
12 x 8
120
160
160
170
170 163
143
146
136
127
121
113
107
99
95
90
78 2-PS 3/4"
2-PS 1"
2-PS 1x1/4"
2-PS 1x1/2"
2-PS 1x1/2"
2-PS 2"
2-PS 2x1/2"
2-PS 2x1/2"
2-65A flange
2-80A flange
2-100A flange
2-125A flange
11
11
13
13
13
11
11
2.5S
2S
1.5S
1S91
95
109
11410 x 8
8 x 7
7 x 7
8070
112
70
11254
38
30
1160
55
42
37
356
330
263
257
124
118
80
80
12
6
5
57 x 7
100
100
102
118
118
100
100
4-fl2-Ferrule(Male)NMLKJIH
units : mm
GFED
49 22
72
72 32
28
49 22
CA
30
B
137
137
100
DS-R2.5S
DS-R1S
DS-R1.5S
DS-R2S
MODEL
56
50
56
50
Sanitary
Industry
DS-R150SW
DS-R200FW
240
240
L
F
BEDNM
HG
JK
C
AA
C
HG
JK
2-Flange
I-(KEY)
4-∅ 4-∅
65
65
185
185 185
185 88
88 48
48 200
200
14 x 9
14 x 9
210
210
649
589 100
130 181
151 2-125A flange
2-150A flange
17
17
100 11
35
Performance Curve (50Hz)
DS-R20FW DS-R25SW DS-R32FW
DS-R50SWDS-R40SWDS-R40FW
DS-R65FW DS-R65SW DS-R80SW
12 24 36 48 (l/m)0
10
20
30
40
0 (l/m)80604020
40
30
20
10
1450RPM
950RPM700RPM
1450RPM
950RPM700RPM
25 50 75 1000
10
20
30
40
(l/m)
1450RPM
950RPM700RPM
m m m
m
40
30
20
10
0 (l/m)120906030 0
10
20
30
40
m
40 80 120 160 (l/m)
700RPM
950RPM
1450RPM
1450RPM950R
PM700RPM
m
40
30
20
10
0 (l/m)20015010050
700RPM
950RPM
1450RPM
m
40
30
20
10
0 70 140 210 280 (l/m)
700RPM
950RPM
1450RPM
(l/m)4003002001000
10
20
30
40
m
700RPM
950RPM
1450RPM
m
40
30
20
10
0 120 240 360 480 (l/m)
700RPM
950RPM
1450RPM
36
Performance Curve (50Hz)
DS-R2.5SDS-R2SDS-R1.5S
DS-R150SW DS-R200FW DS-R1S
DS-R150FWDS-R120SWDS-R100FW
(l/m)640480320160
10
20
30
40
m
0
700RPM
950RPM
1450RPM
0 240 480 720 960 (l/m)
m
40
30
20
10
1450RPM9
50RPM700R
PM
300 600 900 1200 (l/m)0
10
20
30
40
m
700RPM
950RPM
1450RPM
m
40
30
20
10
0 (l/m)280021001400700
700RPM
950RPM
1450RPM
1000 2000 3000 4000 (l/m)0
10
20
30
40
m
700RPM
950RPM
1450RPM
0 (l/m)
10
m
40
30
20
20 40 60 80
1450RPM950RPM700R
PM
20
30
40
m
10
120906030 (l/m)0
700RPM
950RPM
1450RPM
0 (l/m)70 140 210 280
10
m
40
30
20
1450RPM
950RPM
700RPM
400300200100 (l/m)0
10
20
30
40
m
700RPM
950RPM
1450RPM
37
Performance Curve (60Hz)
DS-R20FW DS-R25SW DS-R32FW
DS-R50SWDS-R40SWDS-R40FW
DS-R65FW DS-R65SW DS-R80SW
13 26 39 52 (l/m)0
11
22
33
44
0 (l/m)88664422
44
33
22
11
1750RPM
1120RPM
830RPM
1750RPM
1120RPM
830RPM
30 60 90 1200
11
22
33
44
(l/m)
1450RPM
1120RPM8
30RPM
m m m
m
44
33
22
11
0 (l/m)1601208040 0
11
22
33
44
m
50 100 150 200 (l/m)830RPM
1120RPM
1750RPM
1750RPM
1120RPM8
30RPM
m
44
33
22
11
0 (l/m)26019513065
830RPM
1120RPM
1750RPM
m
44
33
22
11
0 80 160 240 320 (l/m)
830RPM
1120RPM
1750RPM
(l/m)5203902601300
11
22
33
44
m
830RPM
1120RPM
1750RPM
m
44
33
22
11
0 150 300 450 600 (l/m)
830RPM
1120RPM
1750RPM
38
Performance Curve (60Hz)
DS-R2.5SDS-R2SDS-R1.5S
DS-R150SW DS-R200FW DS-R1S
DS-R150FWDS-R120SWDS-R100FW
(l/m)680510340170
11
22
33
44
m
0
830RPM
1120RPM
1750RPM
0 270 540 810 1080 (l/m)
m
44
33
22
11
1750RPM
1120RPM8
30RPM
350 700 1050 1400 (l/m)0
11
22
33
44
m
830RPM
1120RPM
1750RPM
m
44
33
22
11
0 (l/m)320024001600800830RPM
1120RPM
1750RPM
1100 2200 3300 4400 (l/m)0
11
22
33
44
m
830RPM
1120RPM
1750RPM
0 (l/m)
11
m
44
33
22
20 40 60 80
1750RPM
1120RPM
830RPM
22
33
44
m
11
1441087236 (l/m)0
830RPM
1120RPM
1750RPM
0 (l/m)80 160 240 320
11
m
44
33
22
1750RPM
1120RPM
830RPM
440330220110 (l/m)0
11
22
33
44
m
830RPM
1120RPM
1750RPM
39
Maintenance
- Specification of Mono Pump
PRESSURE
SANITARY MONO FLEX PUMP
INDUSTRIAL MONO FLEX PUMP
PRESSURE
DS-R100FW 7.5- 5.5
6P4Pkg/cm2
DSR-1S
DSR-2.5S
DSR-2S
DSR-1.5S 2 2
7.5
5
5
3
2 1
5
5.5
5.5
4.5
MODEL
DS-R200FW
DS-R150SW
DS-R150FW
DS-R120SW
DS-R120FW
HP
-
-
-
20
30
15
-
-
10
10
6.5
7
7
5.5
5.5
DS-R25 1/21 2.7
DS-R50
DS-R65
DS-R50SW
DS-R80SW
DS-R65SW
DS-R65FW
DS-R32
DS-R25SW
DS-R40SW
DS-R40
DS-R32FW
23 3.3
7.5 5
7.5
-
5
7.5
5
5
3
3
5
5.5
5.5
5.5
3.8
3 2
5
2
3
2
2
2
1
1
5.5
5.5
3.3
5.5
2.7
DS-R10
DS-R20FW
DS-R20
DS-R15
MODEL
6P4P
1/2 -
1
1/2
1/2
-
1/2 -
2.4
2.7
4.4
2.2
HP
kg/cm2
2-65A Flange 844 699 458540 400 337 482.1
537
438
2191
1603
650
40
147
210
71
50Hz
700(RPM)
60Hz 50Hz
1750(RPM)
1S Ferrule, Male
2S Ferrule, Male
1.5S Ferrule, Male
2.5S Ferrule, Male
179
525
368
100
148
305
435
83
1450(RPM)
PORT SIZE
2-150A Flange
2-125A Flange
2-125A Flange
2-100A Flange
2-100A Flange
4P
1625
4008
5478
1344
1094
1346
4539
3321
1113
906
50Hz60Hz 60Hz
950(RPM)1120(RPM)
114
235
336
64
97
285
200
54
830(RPM)
85
249
174
47
FLOW RATE (l/m)
6P
1040
3506
2565
860
700
882
2176
3005
594
729
8P
2598
1901
771
519
637
단위 유량
57
cc/Rev
210
300
102
767.8
625.0
3130
2290
928.5
50Hz
8
24
26
14
44
40
72
100
56
122
128
281
244
150
96
32
700(RPM)
25A PT 80 66
50A PT
2-65A Flange
65A PT
65A PT
65A PT
50A PT
32A PT
40A PT
40A PT
32A PT
25A PT
241 199
375
609
703
320
305
311
582
505
252
265
141
250
180
100
109
116
149
207
91
83
1750(RPM)
15A PT
20A PT
20A PT
10A PT
PORT SIZE
34
64
59
20
28
49
53
17
1450(RPM)
4P
60Hz 50Hz
4351 38
154 131
240
450
390
205
195
203
331
382
174
165
90
160
115
64
70
76
136
97
54
60
114
178
289
333
152
145
67
119
85
47
52
50Hz
950(RPM)1120(RPM)
22
41
38
13
19
35
32
11
FLOW RATE (l/m)
60Hz
6P
830(RPM)
16
30
28
10
60Hz
8P
45.5
137.5
183.0
174.1
401.7
348.2
214.2
62.5
57.1
142.8
102.6
80.3
cc/Rev
11.6
33.9
36.6
19.6
단위 유량
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