SPX APV Ws+20/15 User manual

Ws+
CENTRIFUGAL PUMP
FORM NO.: 381497 USA
REVISION: 10/2014
READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
INSTRUCTION MANUAL

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Contents: USA
Section Page Description
- 1 Introduction
- 3 Warnings
- 6 Important Warnings
- 8 Sectional Drawing
1 10 Introduction to the Ws+
1.1 - Ws+ range
1.2 - Selection of the standard or simplified pump
1.3 - The Ws+ pump, options and extras
1.4 - Identifying the pump model
2 11 Installation of the pump
2.1 - Reminder
2.2 - Installation of pump
2.3 12 Installation of pump without recirculation
2.4 - Lining up the pipe system
2.5 - Power supply
2.6 - Water supply for water-flushed shaft seal
3 13 Before start-up
3.1 - Checking the pump body for foreign material
3.2 - Testing the pump
4 14 Putting the pump into service
4.1 - Flushing water
5 14 Maintenance
5.1 - Checking the shaft seal
5.2 - Replacing the shaft seal
5.3 16 Replacement of motor
5.4 17 Recommended spare parts
6 18 Technical data
6.1 - Maximum permissible outlet pressure
6.2 Required torques
7 20 Ws+ Spare Parts, Dimensions
7.1 - Pump Dimensions
7.2 22 Pump Parts
7.3 24 Impeller
7.4 25 Shaft Seal
7.5 27 Seal Kit
7.6 28 Shaft
7.7 29 Extension Frame and Shaft Guard
7.8 30 Frame

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Congratulations, you are the owner of a quality built item from SPX Flow
Technology. This pump was manufactured by the skilled personnel of a
company which has served the needs of the dairy, food and process industries
for more than 100 years.
The purpose of this manual is to provide instructions for the safe installation,
operation and maintenance of your SPX Flow Technology equipment.
Read and understand the entire manual before removing from the crate and
installing the equipment.
SPX Flow Technology is committed to providing quality equipment and
customer satisfaction. We have a unique network of sales and service support
throughout the world, which are listed in this manual. Please note the office
located nearest to you. Should you have any questions concerning any
information contained in this manual, contact the nearest office for assistance.
Standard Warranty
Obligations of Seller
During the warranty period, the Seller shall repair, or at Seller's option, replace
parts determined by the seller to be defective in material or workmanship. The
warranty period is one (1) year from the date of delivery to Buyer F.O.B. point of
manufacture. The foregoing shall be the sole obligation of the seller under this
warranty with respect to the equipment and the other property included in this
agreement. With respect to the equipment, materials, parts and accessories
manufactured by others, seller's sole obligation shall be to use reasonable
efforts to obtain for the Buyer the full benefit of the manufacturer's warranties
Warranty Exclusions
Repair or replacement of parts required because of misuse, improper care or
storage, negligence, alterations, accident, use of incompatible supplies or lack
of specified maintenance are excluded from the Seller's warranty obligations.
Disclaimer of Warranties
The foregoing warranty expressions are in lieu of all other warranties,
expressed or implied, including implied warranties of merchantability and
fitness for a particular purpose, and existence of any such other warranty is
hereby denied.
Limitation of Liability and Remedies
The liability of the Seller for breach of any warranty obligation hereunder is
limited to:
1. The repair or replacement of the equipment on which the liability is based
or,
2. At the Seller's option, the refund to the Buyer of the amount paid by the
Buyer to the Seller for said equipment.
Introduction

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All other liability of the Seller with respect to this agreement, or from the
manufacture, installation, maintenance, repair or use of any equipment
covered by or furnished under this agreement, whether in contract or in tort,
or otherwise, is limited to the amount paid by the Buyer to the Seller pursuant
to the terms herein:
Seller shall not be liable for incidental or consequential damages of any kind
whatsoever. The remedies set forth herein are exclusive.
Breach
Any breach by the Seller with respect to any items or unit of equipment shall
be deemed a breach with respect to that item or unit only.
Infringement
The Seller will not be liable for the infringement of any patent by the Buyer's
use of any equipment or materials delivered hereunder.
A word about SPX Flow Technology Service Parts
We want to raise your awareness to the problem associated with the
purchase of parts not manufactured to the high quality specifications of SPX
Flow Technology.
In addition to our high quality, SPX Flow Technology parts are manufactured
to meet regulatory agency authorization, approvals and certification (3A
Sanitary standards, USDA, ASME, BISSC, and OSHA). Where applicable,
materials used in construction of SPX Flow Technology parts conform to FDA
regulations.
Types of equipment include, but are not limited to, rotary pumps, centrifugal
pumps, homogenizers, ice cream freezers, scrape surface heat exchangers,
plate heat exchangers, ingredient feeders, process tanks and contact plate
freezers.
We bring this potentially serious problem to your attention in order to
safeguard your best interest and those of your employees.
If you have any questions, please feel free to call your local SPX Flow
Technology contact.
Introduction

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Parts not manufactured to our specifications may cause damage to your SPX
Flow Technology equipment and void all warranties. Use of parts that do not
meet SPX Flow Technology specifications may cause property damages and
serious bodily injury.
Policy regarding availability of service parts
SPX Flow Technology will attempt to remain in a position to supply
replaceable parts during the normal life of any item of SPX Flow Technology
equipment. This is contingent upon availability of tools, material and facilities
of our own as well as of our suppliers.
After the expiration of this period, the supply of service parts will be limited to
available stock of completed parts. If unable to supply the service part,
drawings will be furnished when available to permit local manufacturing, if
desired.
SPX Flow Technology reserves the right to improve, change or modify the
construction of its equipment or any parts thereof without incurring any
obligation to provide like changes to equipment previously sold.
Safety Information
Electrical Hazard
A pump is normally powered by an electric motor. This creates a hazard of
electrical shock which could cause severe injury or even loss of life.
To minimize the risk of this hazard:
All electric/electronic installation, maintenance, and service must be
performed by trained and authorized electricians only.
All electric/electronic installation must comply with all applicable codes and
standards including those established by OSHA (Occupational Safety and
Health Administration).
Do Not perform any maintenance or service on the motor or any other
electrical devices unless the electric power source has been turned off and
Locked Out using a locking device for which only the person involved in the
maintenance procedure has possession of the key.
Make installation suitable for a wet environment, including:
1. A power disconnect which can be locked in a power Off position and the
key removed. This will allow maintenance or service to be performed
without possibility of power being accidentally turned on.
2. Protection of all electric connections within a sealed junction box.
3. Proper grounding of the motor.
4. Protection from flooding. Do not install in an area which could fill with
water to a level which contacts the motor.
Warnings

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Rotating Parts Hazard
Routine cleaning and maintenance procedures require pump disassembly.
The pump contains close fitting parts which rotate during operation. Should
the pump start unexpectedly while disassembled, severe injury could result.
To minimize the risk of this hazard:
1. Do Not assemble or disassemble the pump
2. Do Not remove the guard from the adapter
3. Do Not perform any maintenance or service on the motor or pump unless
the power source has been turned off and Locked Out, where only the
person involved in the maintenance procedure has possession of the key.
High Temperature Hazard
Some pump applications may require processing of high temperature liquids
and/or the use of high temperature cleaning/ sanitizing solutions. Pumping
high temperature liquids is considered to be hazardous and extreme care
should be taken when handling such liquids.
To minimize the risk of this hazard:
1. All installation, maintenance, and service of piping, valves, and other
controls must be performed by trained and authorized plumbers only. This
applies to process piping and cleaning/sanitizing piping.
2. All plumbing installation must comply with all applicable codes and
standards including those established by OSHA.
3. Do Not perform any maintenance or service on the motor or pump unless
the power source has been turned off and Locked Out, where only the
person involved in the maintenance procedure has possession of the key.
4. Never disconnect any lines or fittings (whether process or cleaning/
sanitizing) or disassemble the pump until the line is no longer under
pressure and the fluid inside is not hot or harmful.
5. Operating personnel must be authorized and trained.
Warnings

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High Pressure Hazard
Fluids processed by a pump are under pressure. This creates a hazard to
personnel working in the area should a leak occur. Leaking high pressure
fluid may cause injury by startling personnel or from actual contact with the
leaking fluid.
To minimize the risk of this hazard:
1. All installation, maintenance, and service of piping, valves and other
controls must be performed by trained and authorized plumbers only. This
applies to process piping and cleaning/sanitizing piping.
2. All plumbing installation must comply with all applicable codes and
standards including those established by OSHA.
3. Never disconnect any lines or fittings (whether process or cleaning/
sanitizing) or disassemble the pump when lines are under pressure.
4. Should a leak occur, immediately find the cause and stop the leak.
Never operate the pump with both the inlet valve and the outlet valve in
closed positions. If the pump runs with liquid in it, while the valves controlling
the suction and discharge lines are both closed, the liquid in the pump will
heat up and turn into vapor, causing a risk of explosion.
To eliminate the risk of explosion, it is strongly recommended that the
following be included in the system:
1. A pressure relief device which relieves pressure and contains any
discharge, or
2. A thermal/pressure overload device to isolate the pump motor in the
event of excessive temperature/pressure.
Leaking Fluid Hazard
Fluid leaks or spills may occur in any pumping system. This creates a hazard
to personnel due to slippery floor conditions or contact with possibly
hazardous fluids.
To minimize the risk of this hazard:
1. Always clean up leaks and spills immediately.
2. Find and correct the cause of the leak immediately.
Warnings

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The following important cautions describe ways to avoid incorrect operating
procedures which will cause serious damage to the pump.
Cavitation
Cavitation is a condition within the pump which results in extreme hydraulic
forces which can create a risk of severe damage to pump components.
Cavitation makes a characteristic "rattling" noise. It is caused by operation
with low fluid pressure at the pump inlet.
To minimize this risk:
Install and operate the pump so that NPSH (net positive suction head)
available to the pump equals or exceeds the "NPSH required" as shown on
the pump performance curve. To increase NPSH available:
1. Decrease the temperature of the liquid being pumped.
2. Increase the height of liquid supply level.
3. Decrease the suction line length and remove restrictions to flow such as
elbows, valves, etc.
4. Increase the suction line size (diameter).
5. Reduce the pump flow rate (throttle discharge).
Corrosion Pitting
Stainless steel is subject to a risk of corrosion when improperly cleaned or
sanitized.
To minimize this risk:
1. Never use steel wool or a wire brush to clean stainless steel surfaces.
2. Iron particles will embed and cause corrosion pits. Use a non-metallic
brush or scrub pad for cleaning when required.
3. Never allow prolonged contact of sanitizing solutions or other corrosive
cleaning chemicals with stainless steel. Only use sanitizing solutions
immediately prior to processing.
Important Warnings

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Motor Overload
Depending on the impeller diameter and motor horsepower, there is a risk the
pump motor will overload if operated with a fully opened, unrestricted
discharge.
To minimize this risk:
1. Before operating the pump, review performance curve and application
giving consideration to motor horsepower and impeller diameter versus
expected discharge flow rate and pressure. If the pump is operated with
less than expected discharge pressure, the flow rate will increase and the
load on the motor will increase.
2. Install a throttling type valve in the discharge piping to allow control of
pump discharge flow rate during initial operation. The valve may be
removed later when the system is proven to supply adequate discharge
pressure to prevent overload.
Impeller Shaft Location
The location of the impeller shaft on the motor shaft is critical for correct
pump operation and to obtain maximum operating efficiency.
APV Centrifugal Pumps are designed to achieve excellent operating
efficiency. This efficiency is possible, in part, because of precision
manufacturing of the pump components. The impeller must be precisely
located between the casing and backplate to take full advantage of the
pump's operating efficiency.
Incorrect location of the impeller shaft may cause the impeller to contact the
casing or the backplate during operation and cause extensive damage to the
pump.
The procedures for correctly locating the impeller shaft are described in the
Maintenance section. This should be referred to whenever:
1. A new pump is installed onto a motor or pedestal.
2. The impeller shaft is loosened or removed from the motor or pedestal
shaft.
3. A replacement casing or backplate is installed.
Important Warnings

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Ws+Sectional Drawing
Section 1
Shaft size ø25 and ø35
Section 2
Shaft size ø25 and ø35

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Ws+Sectional Drawing
1: Pump housing
2: Air screw
3: O-ring
4: Impeller
6: O-ring
7: Back plate
8: Locating pin
9: Clamp ring
11: Shaft
12: Screw
13: Shaft guard
14: Extension frame
15: Bracket (screw)
16: Screw
17: Spacer flange
25: Clamp ring
26: O-ring
27: Front cover
28: Clamp ring
29: Gasket
30: Recirculationpipe
Section 1: Single seal for shaft size ø25 and ø35
Section 2: Double seal with liquid flushing for shaft size ø25 and ø35
5.1: Seal housing
5.3: Pressure ring
5.4: Drain pipe
5.5: O-rings
5.6: Stationary seal face
5.7: Rotary seal face
5.8: Pin
5.9: Seal housing
5.10: O-ring
5.11: Pressure ring

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1.1 The Ws+ range
This manual covers the standard version of the Ws+ pump, which is
supplied pre-fitted with recirculation connection, and a simplified
version, which has no recirculation.
Units are designed and constructed to meet the requirements of 3-A
sanitary standards for cleanability of processing equipment.
1.2 Selection of the standard or simplified pump
1. The standard Ws+ pump should be installed as a normal liquid ring
pump, i.e. with a "swan neck" (two x 90° bends) on the inlet and a
length of vertical pipe on the outlet. (See length H in Fig. 2).
2. However, in many CIP pump applications, it is possible to simplify
the pipe layout and bring the inlet pipe directly (horizontally) to the
Ws+ pump inlet and eliminate the recirculation connection. For the
pump to function in this manner, there the inlet pipework must meet
the specifications detailed in Section 2.2. If in doubt, the standard
Ws+ with swan neck and recirculation connection must be used.
1.3 The Ws+ pump, options and extras
Standard Options are available in the Ws+ range:
- with frame and feet
- with shaft seal in carbon/SiC or SiC/SiC
- with o-rings in EPDM or FPM (Viton)
- with single mechanical shaft seal or double mechanical shaft seal
prepared for water-flushed shaft seal.
Additional Options:
- drain valve
- pump trolley
- Ws+ pumps can be supplied with all standard welded ferrules
(Tri-clamp, bevel seat, ISO etc.).
1.4 Identifying the pump model
A nameplate as is fitted on the extension frame (Fig. 1).
Example:
Type: Indicates pump model, such as Ws+ 20/15, Ws+ 30/30, etc.
Serial No.: Use the serial number whenever requesting information on
service parts.
Order No.: SPX's order number.
Year: Indicates the year of manufacture.
1. Introduction to the Ws+ program
Fig. 1: Nameplate

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2.1 Reminder
The Ws+ pump, like all self priming pumps of its type, requires an initial
volume of liquid in order to form the liquid ring within the pump which is
essential for the self priming function. See below.
2.2 Installation of pump
In the standard Ws+ pump, the priming volume of liquid must be
retained either within the body of the pump or where it can circulate
back to the inlet. To this end the pump must be installed with outlet
vertically upwards and with a length of vertical pipe coupled to it.
A swan neck coupled directly to the pump's inlet prevents loss of that
priming volume down the inlet pipe. To provide space for discharged air,
any non-return valve must be mounted at least 20" downstream of the
specified length of vertical pipe. See table and Fig. 2.
Shorter pipe lengths will adversely affect the time taken for the pump to
self-prime.
Note that the pump should not be left running too long without pumping
(typically 15 minutes, but less if the pumped liquid is hot) as it gets
warm and loses priming liquid by evaporation.
Keep the number of valves, bends and T-pieces on the suction side to
an absolute minimum.
There must be sufficient space around the pump for piping and access
for maintenance.
2. Installation of the pump
20/15 30/30 44/50 Pump Ws+
0.45 0.53 0.98Priming volume gallons
20/15 30/30Pump Ws+
40"
(2" diam.) 60"
(2" diam.)
60"
(3" diam.)
or
80"
(2" diam.)
H min (Fig. 2)
44/50
Swan
neck
20”
min.
8” min.
Fig. 2: Pump installation

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2.3 Installation of pump without recirculation.
In this application, where the simplified pipe layout is to be used, one
important requirement must be met:
As the suction tank starts to refill, some liquid will be able to flow from
the tank into the pump to replenish any priming liquid lost when the
tank was previously pumped dry. Typical applications can be seen in
Fig. 3.
Note: The pump body must always be mounted with outlet vertically
upwards and all the other conditions apply.
Note: Any eccentric reducer should be mounted such that the pump
center line is lower than the inlet pipe's center line.
2.4 Lining up the pipe system
Line up the pipes carefully to the pump suction and discharge ports.
Make sure that the pipe system is adequately supported by pipe
supports, so that the pump body is not subject to strains and weight
from the pipe system.
Note: During priming the pump may tend to vibrate. A pipe support
should be placed close to the pump suction to prevent pipework
vibration creating excessive noise.
2.5 Power supply
All electrical installation must comply with all applicable codes and
standards including those established by the Occupational Safety and
Health Administration (OSHA).
Install a main power disconnect on-off switch that can be locked in the
power off position and have the key removed when service is
performed.
Thoroughly read the motor manufacturer’s instructions before making
installation.
The motor should be connected such that the rotating direction of the
motor (and thus of the impeller) is counterclockwise when viewed from
the front towards the suction nozzle of the pump body (Fig. 4).
2.6 Water supply for water-flushed shaft seal
Pumps with a water-flushed shaft seal have two hose connectors on
the seal flange (Fig. 5). The hose connectors are 1/8 inch NPT and fit a
1/4 inch plastic tubing. A flush flow of 4-8 gallons/h is required.
Maximum pressure is 100 PSIG.
The hose connection in the seal flange should always be positioned
vertically with the fluid inlet underneath and the outlet on top.
Water consumption can be limited by installing a solenoid valve for the
flushing water on the supply side. The open/close function of the
solenoid valve can be controlled by the pump's start/stop sequence.
Before starting the pump, dismantle and clean the suction pipe. Any
foreign material in the pump must be removed.
(A)
(B)
(C)
20”
min.
Liquid level
High
Low
Fig. 3: Typical applications
Fig. 4: Direction of rotation
Fig. 5: Water flush hose connections
2. Installation of the pump

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3.1 Checking the pump for foreign material
Remove the front cover, air screw and its housing as described below.
Refer to the assembly drawing on page 8.
1. Lock Out power and disconnect from the power supply.
2. Remove the front cover by unscrewing the clamp ring (item 25),
after disconnecting the re-circulation connection (item 30, if fitted)
3. Unscrew the air screw (item 2) (use a pipe C-spanner or a round
bar in the balance hole in the shaft muff to secure the shaft)
4. Remove similarly the housing clamp ring (item 9) and carefully pull
off the pump/screw housing
5. Turn the impeller (item 4) to ensure that there is no foreign
material behind it.
6. If there is any foreign material in the pump, remove it.
7. When the pump is clean and free of foreign material, reassemble
the pump.
8. When mounting the pump/screw housing check that the location
pin (item 8, where fitted) in the top of the back plate (item 7),
mates with the detent in the pump body and press the pump/screw
housing in over the o-ring (item 6). Re-fit the clamp ring.
9. Screw the air screw on to the shaft. Remember the correct
tightening torque - see section 5.2.18.
10. Press the front cover into place and fit the clamp ring.
Re-assemble the re-circulation connection (if fitted).
11. Install suction and discharge pipes. Check that the pipe unions
have been tightened properly and that pipe supports have been
fitted.
To make the front cover and the pump/screw housing easier to fit, we
recommend that you give the o-ring a thin layer of food-approved, acid-
free grease or soap.
3.2 Testing the pump
To check that the pump is working properly, pour water into the pump
and start it for a moment. Check the direction of rotation (Fig. 6). Listen
for any unusual noises.
In pumps with water-flushed shaft seals, the seal chamber must be
filled with water.
Never allow the pump to run without liquid, as this will ruin the shaft
seal.
3. Before start-up
Fig. 6: Direction of rotation
Note: for numbered items,
see assembly drawing on
page 8.

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Check the following before starting the pump:
- that the shaft guard has been fitted properly
- that there is free access for liquid and the pump is primed
- that the valve on the discharge side (if fitted) is closed
The valve on the discharge side is closed during start-up to prevent the
motor from overloading, but should be opened again as soon as the
pump has been started.
Note: The Ws+ pump should not be left running too long without
pumping (typically 15 minutes, if the pumped liquid is not hot), as it
gets warm and loses priming liquid by evaporation.
4.1 Flushing water.
In pumps with a flushed shaft seal, check that the supply of flushing
medium is open and that the flow of the medium is adequate
(approx. 4-8 gallons/hour).
5.1 Checking the shaft seal
Check the pump's shaft seal for leaks on a regular basis. If the shaft
seal is leaking, replace it as described below.
5.2 Replacing the shaft seal
The sectional drawing (page 8) shows the pump and position and
construction of the shaft seal - both ordinary seals and seals with
water flushing.
To replace the shaft seal, it is necessary to dismantle the pump as
described below. The sectional drawing is to be used for reference.
1. Disconnect the power supply in the motor isolator by removing the
fuses and disconnecting the cables.
2. Turn off the flushing water supply.
3. Close the inlet and discharge of the pump, and drain the pump/
screw housing, and make sure that there is no liquid in the pump
body.
If the pump is used for hot and/or aggressive liquids, special
precautions must be taken. In such cases, observe the local
regulations for personal protection when working with these
products.
4. Once the inlet and outlet pipes have been properly isolated and
the re-circulation connection (if supplied) removed, remove the
clamp ring (item 25) and front cover (item 27).
5. Unscrew the air screw (item 2) (use a pipe C-spanner or a round
bar in the balance hole in the shaft muff to secure the shaft).
Then open the clamp ring (item 9), take off the pump/screw
housing (item 1) and remove the impeller (item 4).
Dismantling the pump
4. Putting the pump into service
5. Maintenance
Note: for numbered items,
see assembly drawing on
page 8.

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6. With your fingers, remove the stationary seal face (item 5.6),
mounted in the back plate (item 7).
7. Remove the o-ring (item 5.5) from the stationary seal face.
8. Use your fingers to remove the rotary seal face (item 5.7) mounted
in the impeller (item 4).
9. Remove the o-ring (item 5.5) from the rotary seal face.
10. Clean the stator and rotary seal face locations, if necessary with
air or water.
In the case of water-flushed shaft seals, the back plate must be
removed to dismantle the rear shaft seal. The rear stationary seal
face (item 5.6) is mounted in the pressure ring (item 5.11) and the
rotary seal face (item 5.7) is mounted on the shaft (item 11). These
are removed in the same way as the front seal components.
11. Check o-rings (item 5.5) for signs of cracks, lack of elasticity,
brittleness and/or chemical attack. Replace worn or defective
parts.
12. Check the stationary and rotary seal faces for signs of wear too.
The wearing surfaces must be completely free of scratches/cracks.
If not, the rings must both be replaced.
In the case of water-flushed shaft seals, check the rear seal rings
(item 5.6, 5.7) for wear, and replace if necessary.
13. Fit new o-rings on the stationary seal face and rotary seal face.
Note: Remember to moisten these with water.
14. Fit the rotary seal face (item 5.7) on the impeller without using
tools.
Note: The notch in the rotary seal face must be fitted so that it
mates with the driving pin (item 5.8) in the impeller hub.
In the case of water-flushed seals, also fit a rotary seal face (item
5.7) with its o-ring (item 5.5) in the location on the shaft - again
without using tools.
15. Fit the stationary seal face (item 5.6) in the back plate without
using tools.
Note: The notches in the stationary seal face must mate with the
driving dogs on the carrier in the back plate. Check that the
stationary seal face is positioned so that it slides back and forth
easily within the back plate.
When fitting new water-flushed seals, remove the drain pipe (item
5.4) from the stationary seal faces for both the front and rear seal
before fitting them in the pressure ring (item 5.11) and back plate
respectively.
Checking parts for wear
5. Maintenance
Fitting
Dismantling the shaft seal
Note: for numbered items,
see assembly drawing on
page 8.

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16. After fitting, clean the wearing surfaces.
For liquid-flushed, re-mount the back plate.
17. Fit the impeller. Check that the location pin (item 8, where fitted) in
the top of the back plate, mates with the detent in the pump body
and carefully, to avoid damaging the o-ring, press the pump/screw
housing (item 1) in over the o-ring (item 6). Fasten with the clamp
ring (item 9). See "Required torques for housing clamp" table on
page 18.
18. Re-mount the air screw. Remember to use the proper tightening
torque:
M14: 52 lb·ft (70 Nm)
M20: 148 lb·ft (200 Nm)
19. Press the front cover into place and fit the clamp ring.
Re-assemble the re-circulation connection (if fitted).
5.3 Replacement of motor
The standard motor for the Ws+ pump has a locked front bearing. If the
motor is replaced, the new motor must also have a locked front
bearing. The motor bearing is enclosed and permanently lubricated.
Follow the instructions below when replacing the motor. For
replacement of bearings, see the motor supplier's service instructions.
1. Lock Out power supply then disconnect the pump and motor from
system.
2. Remove of the front cover, air screw, pump/screw housing and
impeller (items 27, 2, 1 and 4) described as in para. 5.2, points
1-5 on page 14.
3. If possible, stand the pump on end. See Fig. 8.
4. Undo the four motor flange bolts and remove them. See Fig. 8.
5. Lift the backplate (item 7) and extension frame (item 14), which
are still bolted together, up and off the shaft. See Fig. 8.
Remove the washer (item 17), if supplied.
6. See Fig. 9. Loosen the screws in the shaft muff, pull the shaft off
and replace the motor.
7. See Fig. 8. Before re-mounting the pump shaft, remove any dirt
and grease from the motor shaft and the muff's internal clamping
surfaces. Mount the pump shaft loosely. Position the balance hole
over the keyway.
8. Fit the back plate and extension frame over the shaft.
9. Tighten the bolts.
10. Stand the pump back on its legs/bracket.
11. Fit the impeller and secure it temporarily with the nut (M14 or
M20) which is supplied as a tool with the pump.
5. Maintenance
Back plate
Screw
Extension frame
Motor
Fig. 8: Unscrew motor flange bolts
Fig. 9: Loosen screws
Shaft
Screw
Fig. 7: Mount pump shaft
Motor
Motor shaft
Pump shaft
Note: for numbered items,
see assembly drawing on
page 8.
Note: for numbered items,
see assembly drawing on
page 8.