Clarke CPE20A3 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC1120
CPE WATER PUMP
MODEL NO: CPE20A3
PART NO: 7120320

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INTRODUCTION
Thank you for purchasing this Clarke Water Pump.
Your CPE pump is a highly efficient, robust, continuously rated, self priming
pump with a powerful electric motor, and is ideal for a wide range of
domestic, commercial and agricultural uses. It is suitable for pumping clean
tap and rain water, and will handle small solids in suspension. It is designed to
give you trouble free service provided it is installed and used in the correct
way. If the pump is left in an exposed position, it should be protected from the
elements. especially frost.
Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your purchase
giving you long and satisfactory service.
This water pump has been designed to give long and trouble free service. If,
however, having followed the instructions in this booklet carefully, you
encounter problems, take the unit to your local Clarke dealer.
Please keep these instructions in a safe place for future reference.

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PUMP SPECIFICATION
Water Classification Clean
Maximum Delivery 500 L/min
Rated Head 2-14 m
Maximum Suction Lift 18 m
Supply 400V 3ph
Motor HP 2
Outlet Thread Size 2” BSP
Weight 14.5 kg

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GENERAL SAFETY PRECAUTIONS
Before using this equipment it is in your own interest to read and pay attention
to the following safety rules.
1. NEVER use for pumping flammable liquids or corrosive chemicals. This
pump is designed to pump clean water only.
2. ALWAYS keep the working area clean and well lit. Floors should always be
kept clear. Cluttered or dark areas invite accidents.
3. NEVER over-reach. Keep your proper footing and balance at all times
when installing or maintaining the pump.
4. NEVER direct any water discharge towards electrical wiring or equipment.
5. ALWAYS thoroughly familiarise yourself with this pump & its operation, and
follow all instructions in this manual. Never allow persons unfamiliar with
these instructions to instal or operate the pump.
6. ALWAYS ensure that the pump is properly installed to prevent it from moving
during operation, and that the immediate area surrounding the pump is
kept clear.
7. ALWAYS maintain the pump with care and keep it clean for best / safest
performance.
8. NEVER use this product if any part is damaged. Have it inspected and
repaired by your local Clarke dealer. Always turn the pump off before
carrying out any maintenance.
9. NEVER modify this pump in any way. Use it ONLY for the purpose for which it
is designed.
10. ALWAYS have the pump serviced by your local Clarke dealer, using only
identical replacement parts. This will ensure the safety of the pump is
maintained. The use of non standard parts could be hazardous.
11. NEVER allow the pump to run dry.
WARNING: ALWAYS CONNECT THE PUMP TO AN EARTHED POWER SUPPLY
VIA AN RCD.
CAUTION: THIS PUMP IS NOT A SUBMERSIBLE PUMP. ON NO ACCOUNT
SHOULD IT EVER BE IMMERSED IN WATER.

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INSTALLATION
Because of the number of possible installations, no accessories are supplied
with your pump except for a pair of male inlet/outlet adaptors. However
accessories are available from your nearest Clarke dealer.
NOTE: It is recommended that the end user should consult a qualified
installer if there are any doubts as to the suitability of this product
for a particular installation.
IMPORTANT: The pump MUST NOT be connected to the mains power supply
until all hose/pipe installation is completed. and it has been primed.
POSITIONING OF THE PUMP
The pump must always be installed and operated in a horizontal position i.e.
with the outlet port facing vertically upwards. The fixing holes in the base
should be used to secure the pump firmly in it’s operating position. Mount the
pump on raised blocks or a purpose built platform to protect it from flooding.
Some kind of anti-vibration mounting is also desirable.
Always ensure there is adequate air circulation around the motor. The pump
should be installed in a dry, well ventilated enclosure, sheltered from rain.
ELECTRICAL CONNECTION
The pump should be located at such a distance away from any pond or pool,
as to avoid the possibility of immersion and the power supply should also be a
safe distance away. If in doubt, please contact your electrical specialist and
refer to national regulations.
Avoid situations where the pump could become drenched with water as
neither the motor or terminal box are designed to be totally waterproof.
Ensure the pump & its power cable do not create a safety hazard for people
walking past it.

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ELECTRICAL CONNECTIONS
Before switching the pump on, make
sure that the voltage of your
electricity supply is the same as that
indicated on the rating plate or on
the junction box cover on top of the
motor. This product is designed to
operate on 400VAC. Connecting it to
any other power source may cause
damage.
Installation should be carried out by a
qualified electrician, using I.E.E
approved cable and fittings, and in
accordance with I.E.E. Regulations.
However, in the further interests of
safety we would emphasise the
electrical hazard.
We strongly recommend that this
machine is connected to the mains
supply via a Residual Current Device
(RCD).
If in any doubt, consult a qualified
electrician. DO NOT attempt any
connections yourself.
WARNING! READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE
POWER SUPPLY.

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PIPE/HOSE CONNECTIONS
The pump inlet and discharge
ports are both 1½” BSP (38 mm)
female threads and accept the
adaptors supplied.
Hoses with the same diameter
should be used and secured to
the adaptor with a suitable hose
clip.
Ensure all connections are air
tight when under pressure but not
so tight as to crack the plastic
inlet/outlet adaptors.
These notes are for guidance on
how to achieve a proper working system. The diagram (Fig. 1) above shows a
typical installation at the pump.
A foot valve and filter should be fitted to the lower end of
the suction hose, as illustrated in Fig. 2, so as to retain water
in the suction system and more importantly, to prevent the
possibility of large foreign objects entering the pump body.
FURTHER CONSIDERATIONS
• Strain caused by vibration can be reduced by
connecting a short flexible hose between any rigid
pipework and the pump.
• We recommend that you always use pipes/hoses
with a minimum diameter of 1½” (38 mm).
• Any restriction in the pipeline will greatly reduce the
flow.
• Ensure that the hoses and pipes are supported along their entire
length. They will be considerably heavier when filled with water.
• We recommend that you install isolation valves either side of the
pump in order to isolate the pump during maintenance/removal.
• A gate valve may be installed in-line on the delivery side of the
pump which can be adjusted as required to regulate the flow of
water and can assist in priming the pump.

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•WARNING:-DO NOT place any such obstruction on the suction side
(inlet Port) of the pump unless it is an isolator valve in a gravity fed
system. It is also IMPORTANT to note, that these pumps should not be
operated with the delivery valve completely closed.
• If there is any chance of freezing, protect the pump and pipework
with suitable lagging. The formation of ice may cause serious
damage.
IMPORTANT: The pump MUST NOT be connected to the mains supply until all
hose/pipe installation is completed. DO NOT RUN THE PUMP DRY
NOTE: If any part of the system is to be connected to the mains water
supply ensure that local water authority regulations are observed.

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OPERATION
1. Open any valves in the pipeline.
2. If operating the pump for the first time, prime the pump as described.
NOTE: Re-priming) is only necessary if the pump has been drained.
3. Connect to the power supply and switch on.
• When water starts to flow through the system check for leaks and
correct as necessary.
• If the motor fails to start or the pump does not deliver water, refer to
TROUBLESHOOTING.
• Never operate the pump when not primed with water or if the inlet is
blocked which would allow the pump to run dry, causing damage.
NOTE: Filling the suction pipe with water will speed up the priming
process, and it is essential that a non-return valve be fitted to the
end of the suction pipe.
4. Stop the pump by switching off the power supply.
CARE DURING USE
1. Do not allow the pump to run dry otherwise the seal between the pump
and motor may be damaged. If a leak occurs at this point, allowing water
to pass from the pump to the motor, take the pump to your Clarke dealer
for overhaul.
2. In the event of a blockage, where debris has entered the pump, it can be
cleaned out as described under MAINTENANCE.
3. DO NOT USE for pumping chemicals or other corrosive liquids. Should
contaminants enter the pump, flush through with water as soon as possible
to prevent damage.
4. If the pump is being used to drain a pool, ensure there is adequate
drainage and there is no risk of damage to property as a result of water
being discharged. If a flexible hose must be laid across a roadway, protect
it with wooden planking.

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MAINTENANCE
Inspect the pump/hoses regularly to ensure that debris is not blocking the
passage of water. If you suspect the pump is blocked by silt, leaf debris etc,
disconnect it from the power supply, disconnect the discharge hose and
back-flush to clear any blockage using a hosepipe.
Always keep the pump in a clean condition and check regularly for damage
to the power cable etc.
All electrical connections should be inspected regularly for signs of corrosion
and cleaned where necessary. It is advisable to apply a film of silicon grease
on the terminals for added protection.
AFTER USE
After use, and if the pump will not be used over the winter period or if there is
danger of freezing, always drain the pump body.
If the pump has been used with contaminated or salty water it should be
thoroughly flushed with clean water following use, both inside and out. It
should then be drained and covered over if not already sheltered from the
weather.
If the pump is seized following a period of inactivity it may be possible to free it
off. Ensure the power supply is turned off before by inserting a screwdriver into
either the infeed or discharge port and dislodging a jammed impeller. If this is
not successful it may be necessary to remove the relevant mounting bolts to
separate the pump body and clean away any incrustation.
Re-prime the pump when returning to service.
In the event that overhaul of the pump or motor is necessary, contact your
Clarke service department.
ENVIRONMENTAL RECYCLING POLICY
Through purchase of this product, the customer is taking on the
obligation to deal with the WEEE in accordance with the WEEE
regulations in relation to the treatment, recycling & recovery and
environmentally sound disposal of the WEEE.
In effect, this means that this product must not be disposed of with general
household waste. It must be disposed of according to the laws governing
Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal
facility.

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TROUBLESHOOTING
Problem Cause Solution
Pump does not run. Thermal protection has
been activated.
If the motor has over-
heated, wait for it to cool
down before trying
again.
Faulty power connection Check and repair con-
nection as necessary.
No mains supply Check fused power
supply and replace fuse
if necessary (check fuse
rating). Check circuit
breaker
Impeller seized/blocked Disconnect pump from
power supply.
Investigate cause and
clear blockage
Pump fails to prime Air leaks through suction
hose joints (damaged
hose, broken clamp,
damaged.
Repair connections/
replace hose as
necessary.
Blocked inlet hose Check pipeline for
blockage. Check any
inlet valve fitted is fully
open.
Pump runs but gives poor
output
Congested material
inside pump
Clean out & backflush
pump.
Suction or delivery line
obstructed.
Remove obstruction and
ensure there are no kinks
in delivery line.
Inlet pipe leakage. Check inlet pipe and
connector for leaks.
Tighten as required.
Air leaks through
damaged seal.
Renew seal.
Impeller damaged and
making poor seal.
Return to your Clarke
dealer for repair
Impeller / mechanical
seal is badly worn.
Return to your Clarke
dealer for repair.

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GUARANTEE
This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
High friction losses in the
suction line.
Avoid unnecessary
curves, restrictions or
valves
Pump badly sited result-
ing in suction lift too high
Set pump as close as
possible to the level of
the water to be pumped
Sudden loss of flow. Blockage of inlet pipe Check pipeline for
blockage.
Undue vibration or noise. Excessive flow of water. Decrease flow of water.
by adjusting inlet/outlet
valves in system.
Resistance in inlet pipe
caused by obstruction.
Check pipe and clean
out as necessary
Loose rotating
component
Return to your dealer for
repairs.
Installation of pump is
unstable.
Stop pump and
re-position.
Air pocket in pump or
pipeline.
Release plug in impeller
housing to release air.
Damaged impeller Return to your Clarke
dealer for repair.

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PARTS DIAGRAM - CPE20A

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PARTS LIST - CPE20A
ACCESSORIES
ID DESCRIPTION MANUFID ID DESCRIPTION MANUFID
1 Connector 2” (50 mm) GM1010 19 Bearing GM5466
2 Washer GM5342 20 Motor bracket GM5503
3 Pump body GM5571 21 Condenser GM6994
4 Valve body GM5854 22 Elastic washer GM6996
5 Check valve GM6012 23 Rear motor cover GM6997
6 Flexolite gasket GM6029 24 Fan GM6998
7 Washer GM6162 25 Fan cover GM6999
8 Flexolite washer GM6186 26 Motor stator GM7168
9 Plug GM6209 27 N/a N/a
10 Plug GM6213 28 Junction box cover GM8018
11 Screw GM6235 29 Screw GM8084
12 Screw GM6236 30 Motor shaft GM8643
13 Mechanical seal GM6334 31 N/a N/a
14 Counterface GM6346 32 Condenser box GM9194
15 Nut GM7103 33 Gasket GML045
16 Impeller GM8612 34 Gasket GML046
17 Key 4 x 4 x 16 GMF156 35 Condenser clip GML153
18 Bearing GM5465 36 Motor (1PH) GM8657
1½” BSP Plastic Foot Valve Filter FVF15 Part No:7950682
1½” dia Reinforced Suction/Delivery Hose Part No:7955015
1½” dia Layflat Delivery Hose 10M Part No:7955155
1½” BSP Female Coupling Part No:7950315
1½” BSP Male Coupling Part No:7950215

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DECLARATION OF CONFORMITY