Pomac Pumps CPC User manual

User Manual
CPC Centrifugal Pumps
Pomac B.V. -Feithspark 13 - 9356 BX Tolbert - The Netherlands
Tel [phone] - Fax [phone]
[e-mail] - www.pomacpumps.com
Tfn: 0303-140 50
[email protected]

Pump serial number
capacity
m3/h
pressure
bar
NPSHR
m
Drive, make
type
speed
min-1
voltage / 
/
V
frequency
Hz
current
A
power
kW
isolation class
protection class
IP
area classification
Coupling, make
type
size

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 1
User manual Pomac CPC pumps
This manual has been compiled with the utmost care.
However, POMAC assumes no liability for possible deficiencies of the information in this
manual. It is the responsibility of the buyer/user of this pump to ensure this information is
complete and up-to-date.
All technical information mentioned in this user manual remains property of Pomac bv and may
only be used for the installation, operation and maintenance of this pump. The information may
not be copied, duplicated or passed on to third parties without our written permission.
Copyright 2012 Pomac bv
Release date: April 2012
Doc. ID. : CE/CPC (1204) EN-01

User manual Pomac CPC pumps
2 CE/CPC (1204) EN-01
1.
EC Declaration of Incorporation
according to annex II 1B of the Machinery Directive
(2006/42/EC –May 17th 2006)
We, Pomac B.V., certify and declare under our sole responsibility that the pumps mentioned
below, to which this document relates:
- Model: Centrifugal Pump
- Type: CPC
- Execution: KAM, KAV, KAC, IG, IGH
- Materials: 1.4404 (AISI 316L) or 1.4435 or 2.4602 (Hastelloy C22)
are in conformity with the following harmonised standards:
- NEN-EN 809 1998+A1:2009
- NEN-EN-IEC 60204-1 2006
A technical construction file according to annex VII part B is being kept on file.
This technical construction file was composed bythe below mentioned authorised person.
The pump must not be put into service until the final machinery into which it is to be incorporated has
been declared in conformity with the provisions of this Directive (2006/42/EC), where appropriate.
Issued at Tolbert, 7th of January 2016
Authorised / Approved by;
H. Poelstra, Managing Director
Pomac B.V.
Feithspark 13 9356 BX Tolbert
P.O. Box 32 9356 ZG Tolbert
The Netherlands
Tel: [phone]
Fax: [phone]
website: www.pomacpumps.com
email: [e-mail]

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 3
Table of contents
1. Introduction....................................................................................................................................... 5
1.1. General information................................................................................................................... 5
1.2. Warranty.................................................................................................................................... 5
1.3. Transport and receipt................................................................................................................ 5
1.4. Pump identification.................................................................................................................... 6
1.5. Type code ................................................................................................................................. 7
1.6. Ordering spare parts................................................................................................................. 8
1.7. Manufacturer............................................................................................................................. 8
2. Safety ............................................................................................................................................... 9
2.1. General information................................................................................................................... 9
2.2. Instructions................................................................................................................................ 9
2.3. Staff........................................................................................................................................... 9
2.4. Precautions ............................................................................................................................. 10
2.5. Changed application ............................................................................................................... 10
3. Description CPC centrifugal pump................................................................................................. 11
3.1. Pump description .................................................................................................................... 11
3.2. Certification ............................................................................................................................. 11
3.3. Application area ...................................................................................................................... 11
3.4. Pump impeller design.............................................................................................................. 11
3.5. Type description...................................................................................................................... 11
3.6. Connections ............................................................................................................................ 11
3.7. Materials.................................................................................................................................. 11
3.8. Construction variants .............................................................................................................. 12
3.9. Shaft seals .............................................................................................................................. 13
3.9.1. Materials .......................................................................................................................... 13
3.9.2. Type indication code........................................................................................................ 13
3.9.3. Explanation double action mechanical seals................................................................... 13
3.10. Drive .................................................................................................................................... 13
4. Installation ...................................................................................................................................... 14
4.1. General.................................................................................................................................... 14
4.2. Assembling Type IG................................................................................................................ 14
4.3. Connecting the electric motor ................................................................................................. 14
5. Putting into operation ..................................................................................................................... 15
5.1. Precautions ............................................................................................................................. 15
5.1.1. General ............................................................................................................................ 15
5.1.2. Quench ............................................................................................................................ 15
5.1.3. Flush ................................................................................................................................ 15
5.2. Checking the rotation direction ............................................................................................... 15
5.3. Putting into operation.............................................................................................................. 15
5.4. In operation ............................................................................................................................. 16
5.4.1. Noise................................................................................................................................ 16
5.4.2. Daily maintenance ........................................................................................................... 16
5.4.3. Cleaning procedure and agents....................................................................................... 16
5.4.4. Periodic maintenance ...................................................................................................... 16
5.5. Malfunction.............................................................................................................................. 17
6. Overhaul and repair........................................................................................................................ 18
6.1. Removing the pump................................................................................................................ 18
6.2. Dismantling and assembling the pump................................................................................... 18
6.2.1. Dismantling the pump...................................................................................................... 18
6.2.2. Assembling the pump...................................................................................................... 18
6.2.3. Adjusting the extension shaft........................................................................................... 19
6.3. Dismantling and fitting the shaft seal...................................................................................... 20
6.3.1. Instructions....................................................................................................................... 20
6.4. Internal mechanical seal S1, B1 ............................................................................................. 20
6.4.1. Dismounting..................................................................................................................... 20
6.4.2. Mounting .......................................................................................................................... 20
6.5. External mechanical seal S2................................................................................................... 21
6.5.1. Dismounting..................................................................................................................... 21

User manual Pomac CPC pumps
4 CE/CPC (1204) EN-01
6.5.2. Mounting .......................................................................................................................... 21
6.6. Mechanical seal with quench Q1, Q12 ................................................................................... 22
6.6.1. Dismounting..................................................................................................................... 22
6.6.2. Mounting .......................................................................................................................... 22
6.7. Mechanical seal with flush F1................................................................................................. 23
6.7.1. Dismounting..................................................................................................................... 23
6.7.2. Mounting .......................................................................................................................... 23
6.8. Dismantling and assembling bearings.................................................................................... 25
6.8.1. Dismantling bearing of IG construction............................................................................ 25
6.8.2.Assembling bearing of IG construction............................................................................ 25
6.9. Application IEC standard motors with extension shaft............................................................ 25
7. Dimensions..................................................................................................................................... 26
7.1. Dimensions drawings.............................................................................................................. 26
7.2. Dimensions electric motors KA series .................................................................................... 28
7.3. Pump dimensions.................................................................................................................... 29
7.4. Dimensions IGH...................................................................................................................... 29
7.5. Dimensions IG series.............................................................................................................. 30
8. Sectional drawings and parts lists.................................................................................................. 31
8.1. CPC-KAM (IEC 80-112).......................................................................................................... 31
8.2. CPC-KAM (IEC 132-250)........................................................................................................ 32
8.3. CPC-KAC................................................................................................................................ 33
8.4. CPC-KAV (IEC 80 -112).......................................................................................................... 34
8.5. CPC-KAV (IEC 132-250)......................................................................................................... 35
8.6. CPC- IG................................................................................................................................... 36
8.7. CPC-IGH................................................................................................................................. 37
8.8. Shaft sealings.......................................................................................................................... 39
8.8.1. Version S1 ....................................................................................................................... 39
8.8.2. Version S2 ....................................................................................................................... 39
8.8.3. Version B1 ....................................................................................................................... 40
8.8.4. Version B11 ..................................................................................................................... 40
8.8.5. Version Q1....................................................................................................................... 41
8.8.6. Version Q12..................................................................................................................... 41
8.8.7. Version F1........................................................................................................................ 42
9. Performance curves ....................................................................................................................... 43
9.1. CPC 1500 min-1...................................................................................................................... 43
9.2. CPC 3000 min-1...................................................................................................................... 43
9.3. CPC 1800 min-1...................................................................................................................... 44
9.4. CPC 3600 min-1...................................................................................................................... 44
10. Trouble shooting......................................................................................................................... 45

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 5
1. Introduction
1.1. General information
This manual provides important information regarding the correct way of installing, operating
and servicing this pump.
This manual also provides information necessary to prevent the installer/operator from injury or
discomfort during installation and operation of this pump and to ensure the correct use and
reliable performance of this pump.
This manual represents the most recent information regarding the pump types mentioned in this
manual at the time of going to print. However, POMAC reserves the right to modify the
construction of the pump types mentioned, as well as the contents of this manual, without prior
or afterward notification.
Read this manual thoroughly before installing, operating or servicing this pump. Ensure
that operators and maintenance staff are familiar with the symbols used. Follow the
instructions in this manual step by step.
1.2. Warranty
Warranty is strictly limited to the conditions specified by POMAC and will only be granted
according to these conditions.
Warranty will only come into force provided that:
the pump has been installed and put into operation strictly in accordance with the
instructions given in this manual.
maintenance and repairs have been carried out according to the instructions given in this
manual.
exclusively original POMAC parts or parts provided by POMAC have been used for replacing
parts.
the pump has not been used for applications other than those shown in the specifications
according to which the pump was sold.
no changes have been made to the construction of the pump itself by the buyer.
the damage is not the result of work carried out by persons not qualified or appointed.
the damage has not been caused through major force.
1.3. Transport and receipt
1. Check to see if the pump has not been subject to damage during transportation. If this is the
case, report it directly to the carrier and to POMAC;
2. If the pump is delivered on a pallet, leave it on the pallet for as long as possible. This
facilitates internal transport.
3. If a suitable hoisting device is available, use this if the pump is fitted with lifting eyes.
4. With the exception of the motors fitted with a stainless steel shroud, the motors (pumps) from
construction size 112 or 132 can be fitted with a screw-in lifting eye.
Motor size
100-112
132
160
180
200
Lifting eye thread size
M8
M10
M10
M12
M16

User manual Pomac CPC pumps
6 CE/CPC (1204) EN-01
1.4. Pump identification
On the type plate of the pump the serial number and the type code are indicated. The type
code describes the arrangement of the pump.
Always refer to the serial number and the type code in any correspondence and when
ordering parts.
These pump data are also stated on the first page of this manual.
If the pump type plate is missing, please provide us with the following details so that we can
establish the correct pump size:
Pump cover
Diameter A
Depth B
Diameter suction
Diameter discharge
Connection:
Please state
Impeller
Diameter D
Diameter E
Blade width C
Impeller type
Motor
There is a motor type plate on the motor itself.

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 7
1.5. Type code
The type code consists of the following items:
x
x
x
-
x
-
x
-
x
-
x
-
x
-
x
1
2
3
4
5
6
7
8
9
Example: CPC 16044 –KAM –2 –0750 –S1 –AF - XS
1. Type
CPC
2. Pump size
160 / 210 / 260 / 310 / 380
3. Connection sizes
22 / 33 / 44 / 55/ 66 / 88 / 108 / 1210
4. Construction
KAM / KAC / KAV / IG / IGH
5. Electric motor poles
2 / 4 / 6
6. Power
0.55 = 0055
7.5 = 0750
18.5 = 1850
37 = 3700
7. Mechanical seal
According to EHEGD:
B11 = mechanical seal, balanced, internal, according to EHEDG
Q12 = double mechanical seal with Quench, 1 side balanced, according to EHEDG
Non-EHEGD:
S1 = mechanical seal, unbalanced, internal
S2 = mechanical seal, unbalanced, external
B1 = mechanical seal, balanced, internal
Q1 = double mechanical seal with Quench, unbalanced
F1 = double mechanical seal, Back to Back, with Flush, unbalanced
8. Connections
A = DIN 11851
B = SMS 1145
C = Tri Clamp
D = DIN 11864-1
E = Flanges EN 1092-1
G = special connection
F = inch
H = metric
9. Options
V = heating jacket
I = drain
T = turbine
X = ATEX
S = extra surface roughness treatment internal parts
W = internal parts hardened

User manual Pomac CPC pumps
8 CE/CPC (1204) EN-01
1.6. Ordering spare parts
An order form for ordering spare part is included in the documents accompanying this pump.
You should state the following details on this form:
your address data
the serial number and the type number (these are stated on the type plate of the pump
and on the first page of this manual).
the item numbers and quantities of the desired parts.
See chapter 8 for the sectional drawings of the pump, with the corresponding parts lists with
item numbers.
1.7. Manufacturer
CPC pumps are manufactured by
Pomac B.V.
Feithspark 13
9356 BX Tolbert
The Netherlands
Tel [phone]
Fax [phone]
[e-mail]
www.pomacpumps.com

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 9
2. Safety
2.1. General information
This manual provides information necessary to prevent the installer/operator from injury or
discomfort during installation and operation of this pump and to ensure the correct use and
reliable performance of this pump.
Read this manual thoroughly before installing, operating or servicing this pump.
Ensure that operators and maintenance staff are familiar with the contents of this manual
and with the instructions given.
Ensure that operators and maintenance staff are familiar with the symbols used.
Follow the instructions in this manual step by step.
Store this manual in a place that is known and accessible to any user.
2.2. Instructions
This manual contains instructions with regard to the safety of the user, the continued good
functioning of the pump and hints to facilitate certain actions or procedures.
These instructions are indicated with the following symbols:
Warning! May cause injury to the user! Act strictly in accordance with the instructions
given!
! Caution! May cause severe damage to the pump or bad functioning! Closely follow the
instructions given!
Note: Hint or instruction that can facilitate certain actions.
Issues which require extra attention are printed in bold.
2.3. Staff
All personnel, in charge of the installation, operation or maintenance and overhaul of the pump,
should have received the necessary training.

User manual Pomac CPC pumps
10 CE/CPC (1204) EN-01
2.4. Precautions
When performing maintenance work to the pump ensure that the drive of the pump is
shut down and cannot be switched on unintentionally!
All work on and with the pump must always be in accordance with all the prevailing
standards regarding occupational health and safety as well as machine safety!
Always wear protective gloves and safety goggles if the pump conveys harmful liquids
that may cause injuries!
See to is that the pump is depressurized, when it has to be disassembled for overhaul!
Allow the pump to cool down first when it is used for conveying hot liquids!
2.5. Changed application
Contact POMAC in case the pump is going to be used for other applications or in different
circumstances than those specified during the initial pump selection.

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 11
3. Description CPC centrifugal pump
3.1. Pump description
Stainless steel sanitary centrifugal pump that is used for pumping liquids up to 500 cP. For this
process a liquid flow (with a pre-pressure or an underpressure) is constantly present on the
suction side.
3.2. Certification
Pump type CPC is certified in accordance with the EHEDG directives.
Pump type CPC is ATEX certified.
3.3. Application area
The application area goes from a capacity of 300 m3/h to a manometric head of 9 bars, at 3000
rpm (360 m3/h –13 bar at 3600 rpm).
3.4. Pump impeller design
The pumps are provided with an open impeller.
3.5. Type description
Depending on the area of application the following types are available:
CPC
Stainless steel sanitary centrifugal pump designed with tangential outlet and suitable for
system pressures up to 16 bars.
CPC-H
Stainless steel sanitary centrifugal pump designed with tangential outlet and suitable for
system pressures up to 50 bars.
3.6. Connections
All pump types are available with the following connections:
Couplings according to DIN 11851, DIN 11864-1, SMS, etc.
Tube connections according to NEN 1472 en DIN 1850
Flanges according to EN 1092-1, DIN 11864-2
Tri-clamp according to ISO 2852, DIN 32676 en DIN 11864-3
Connections according to client specification.
3.7. Materials
All parts that come into contact with the liquid are designed in stainless steel
Materials nr. 1.4404.
At request also available in Materials nr. 1.4435 or Materials nr. 2.4602 (Hastelloy C22).

User manual Pomac CPC pumps
12 CE/CPC (1204) EN-01
3.8. Construction variants
All pumps are available in the following, fully exchangeable designs:
KAM
Pump and motor close coupled and placed on adjustable stainless steel feet. The motor is
provided with a stainless steel shroud.
KAC
Pump and motor close coupled and placed on a steel support.
KAV
Pump and motor close coupled and placed on the motor feet.
IG
Pump fitted to a bearing bracket.
IGF
Pump fitted to a bearing bracket and connected to an hydraulic motor
.

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 13
3.9. Shaft seals
3.9.1. Materials
Within the hygiënic standards of EHEDG the pumps are available with different mechanical seal
arrangements.
The mechanical seals are available in the following materials:
Carbon on silicon carbide
Carbon on CrMo-steel
Carbon on Ceramic
Hard metal on hard metal
Silicon carbide on silicon carbide
Tungsten carbide on tungsten carbide
Carbon on hard metal
The mechanical seals are available with EPDM, FKM (Viton), Teflex FEP/Viton and FFKM
(Kalrez) “O”-rings.
All materials meet FDA - CFR 21 or equivalent European standards.
Pomac pumps are supplied as standard with an internal balanced mechanical seal, carbon on
silicon carbide with EPDM O-rings: type EHP, configuration B11).
3.9.2. Type indication code
Code
Description
type
S1
internal single mechanical seal –unbalanced
NP
S2
external single mechanical seal - unbalanced
NP
B1
internal single mechanical seal - balanced
NP
B11
internal single mechanical seal - balanced, according to EHEDG
EHP
Q1
double mechanical seal with Quench - unbalanced
NP
Q12
double mechanical seal with Quench - 1 side balanced, according to EHEDG
EHP
F1
double mechanical seal with Flush - back to back - unbalanced
NP
3.9.3. Explanation double action mechanical seals
Quench
This is applied where a constant pressure-free flush is required because of the product.
Flush
This is applied when a considerable underpressure prevails on the suction side, or when a
constant flushing is required in order to prevent fouling of the shaft seal. The pressure of the
flushing fluid must always be higher than the discharge pressure of the pump.
3.10. Drive
The designs KAM and KAV are fitted with B3/B5 foot/flange motors acc. to IEC, provided
with a balanced stainless steel extension shaft.
The design KACis fitted with a B5 flange motor acc. to IEC provided with a balanced
stainless steel extension shaft. Only available up to build size IEC 132.
The electric motors are available in all possible efficiency classes, voltages, insulation
categories, protection categories and in low-noise and in ATEX design.
The designs IG and IGHare available with air-driven, hydro, combustion and electric motors.

User manual Pomac CPC pumps
14 CE/CPC (1204) EN-01
4. Installation
4.1. General
The foundation must be smooth and level.
For the KAM design set the adjustable legs using the leg adjustment bolts (21), in such a
way that the pump is stable on all 4 legs! Secure the leg adjustment bolts with the lock
nuts (22).
Verify that the system pressure does not exceed the permitted operating pressure.
Verify that the pipes do not show any leakage.
The pipes must be installed and connected stress-free.
If backflow of the liquid flow is undesired, or there is a chance of undesired liquid mixing,
apply a non-return valve.
4.2. Assembling Type IG
Type IG can be assembled with all drives. Proceed as follows:
1. Fit one coupling half to the pump shaft and one half to the drive shaft.
2. Place the pump on the foundation and fix it.
3. Place the drive on the foundation. Keep a gap of 3 mm between both coupling halves.
4. Level the drive to the correct height in relation to the pump using the copper shims under the
motor legs. Fix the motor.
5. Align the coupling according to the following instructions.
4.3. Connecting the electric motor
An electric motor may only be connected by a qualified electrician!

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 15
5. Putting into operation
5.1. Precautions
5.1.1. General
Check that the shaft can turn freely. To do this, rotate the pump shaft a few times manually.
Check that the fuses have been fitted.
Types IG and IGH are designed as standard with grease lubricated ball bearings that are
provided with grease for their entire life (2RS1).
If type IG(H) is designed with oil lubricated bearings, the bearing housing should be filled
with oil first.
5.1.2. Quench
If provided with quench (shaft seals Q1 and Q12):
1. Connect the quench lines to the quench space. Capacity approx. 3 l/min. The SUPPLY line
must be connected to the LOWER port!
2. Open the inlet and outlet of these lines.
3. Set the required pressure. The maximum pressure is 0.2 bar.
5.1.3. Flush
If provided with flush (shaft sealing F1):
1. Connect the flush lines to the flush space. The flushing must have a capacity of approx. 3
ltr/min. The SUPPLY line must be connected to the LOWER port!
2. Open the inlet and outlet of these lines.
3. Set the required pressure. This must be 2 bars higher than the maximum occurring
system pressure!
5.2. Checking the rotation direction
1. Fill the pump with the medium to be pumped.
2. Check that the quench or flush system is set to the correct pressure.
3. Switch the pump on briefly.
Take care with any unprotected rotating parts!
4. Check that the rotation direction of the motor corresponds with the rotation direction of the
pump (which is indicated by an arrow on the lantern piece). If the rotation direction is not
correct, swap the connection wires L1 and L2.
This must be done by a qualified electrician!
5. Fit the guard.
5.3. Putting into operation
1. Check that the quench or flush system is set to the correct pressure.
2. Fully open the shut-off-valve in the suction pipe.
3. Close the delivery valve.
4. Switch the pump on and allow it to come up to pressure.
5. Subsequently open the delivery valve.
6. Set the pump to its required operating point.

User manual Pomac CPC pumps
16 CE/CPC (1204) EN-01
5.4. In operation
5.4.1. Noise
The noise data stated in this manual refer to normal usage, with an electric motor. Under these
conditions the noise level, measured at a distance of 1 meter and at a height of 1,6 meter, is
below 85 dB(A). If after the passage of time the pump produces excessive noise, this can be an
indication that there is a fault in the pump or elsewhere in the system (e.g. worn out bearings,
cavitation).
5.4.2. Daily maintenance
! Regularly check the pressure of quench or flush supply if the shaft seal is equipped with
it.
Check that the high flush pressure does not provoke any undesired leakage to the liquid to
be pumped.
The valve in the suction pipe must always be completely open
Regularly check that the inlet pressure is not too low to avoid the occurrence of cavitation in
the pump
Regularly check the delivery pressure
Regularly check the shaft seals for leakage.
! The pump may never run without liquid
5.4.3. Cleaning procedure and agents
The pumps are suitable for being CIP cleaned.
Use the cleaning agents recommended for the products.
5.4.4. Periodic maintenance
The pumps basically are maintenance free. Only the following items require periodic attention:
! Periodically check that the quench or flush system is still set at the correct pressure and
capacity!
The electric motor bearings are greased for their entire life and do not require any
maintenance or subsequent lubrication. This also applies to the designs IG and IGH, if
designed with grease lubricated bearings.
Regularly check the oil level for designs IG and IGH, designed with oil bath lubricated
bearings. This oil must also be changed annually or after every 5000 operating hours.
Check that the spent oil is disposed of in the correct manner (environment)!
A mechanical seal may not show any visible leakage. If this is the case, replace the shaft
seal.
If a mechanical seal does not show any visible leakage disassembly is not recommended!

User manual Pomac CPC pumps
CE/CPC (1204) EN-01 17
5.5. Malfunction
If there is a malfunction in the pump, try to find the cause using the troubleshooting list at the
back of this manual or consult your installer!
Always switch off the current first if you intend to investigate the malfunction yourself.
Remove the fuse or lock the operating switch with a pad lock!
The pump can still be hot or under pressure. Allow the pump to cool down first and if
possible release the pressure from the pump. Always wear the correct personal
protection devices (goggles, gloves, etc.)!

User manual Pomac CPC pumps
18 CE/CPC (1204) EN-01
6. Overhaul and repair
6.1. Removing the pump
First ensure the electric current has been switched off. Remove the fuses or switch the
operating switch to OFF and lock it with a pad lock!
If the pumped liquid is HOT, first allow the pump to cool down!
1. Disconnect the electrical connections to the electric motor.
2. For designs Q1, Q12 and F1 disconnect the flushing lines.
3. Loosen the connections of the pipes and remove the pump from the piping.
6.2. Dismantling and assembling the pump
The item numbers shown (...) refer to the illustrations and the parts lists in chapter 7
6.2.1. Dismantling the pump
1. Loosen the pump cover nuts (9) and remove the pump cover (3). Inspect the pump cover O-
ring (8) for damage.
2. Remove the pump shaft nut (1) and remove the impeller (4) and the O-ring (2).
3. Remove the sunk key (504).
4. If necessary dismantle the shaft seal.
5. If necessary dismantle the stub shaft.
6.2.2. Assembling the pump
1. If it has been dismantled: fit the extension shaft (12). This has to be adjusted before the
pump can be further assembled, see next paragraph.
2. If it has been dismantled: fit the shaft seal.
3. For an interior seal check that the spring of the seal is positioned firmly against the collar of
the shaft sleeve!
4. Place the O-ring (32) on the shaft.
5. Push the impeller onto the shaft.
6. Place the O-ring (2) and fit the pump shaft nut (1).
! Use a feeler gauge to check that the gap between the impeller and the rear plate is
correct. If this is not the case, readjust the extension shaft! See next paragraph.
7. Place the pump cover O-ring (8). Fit the pump cover (3) and tighten the pump cover nuts (9).