Clarke ECP20A3 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC0517- ISS 3
2” ELECTRIC WATER PUMP
MODEL NO: ECP20A3
PART NO: 7120410

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INTRODUCTION
Thank you for purchasing this Clarke Water Pump.
This non-submersible centrifugal pump is ideal for a range of domestic and
light agricultural purposes.
It is designed to pump clean water in gardens for spraying and irrigation and
for pumping water to greenhouses. It can also be used for boosting running
water feed pressure (not drinking water) and for pumping out wells and
ponds. It is not designed for use with contaminated or salt water. If used for
pumping water from a pond, extra filtering measures should be taken to
isolate any larger particles.
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..
Your CLARKE 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.
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.
WARNING: THIS SYMBOL IS USED THROUGHOUT THE USER GUIDE
WHENEVER THERE IS A RISK OF PERSONAL INJURY. ENSURE THAT
THESE WARNINGS ARE READ AND UNDERSTOOD AT ALL TIMES.

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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. See the suggested
list on page 13.
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.
INSTALLATION 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 INSTALLATION
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.
Before connection to the power supply, make sure that the voltage of your
electricity supply is the same as that indicated on the rating plate. This product
is designed to operate on 400VAC 50Hz. Connecting it to any other power
source may cause damage.

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ELECTRICAL CONNECTIONS
This machine MUST be connected to a 400 Volt, 3 phase 50Hz supply through a
suitably fused isolator switch. It cannot be operated from a single phase
supply.
A trailing lead is provided and should be wired to a 3 phase plug (not
supplied) as follows.
• Connect the GREEN or GREEN & YELLOW
coloured wire to the terminal marked with
the letter “E” or the Earth symbol “ “
• Connect the remaining Brown, Black and
Grey wires to the terminals marked “L1”, “L2”
and “L3”.
• No connection to the Neutral terminal is
required.
Due to these high currents, the product must only be connected to a 3 phase
supply capable of supporting these loads (plus an acceptable degree of
headroom). This supply must be protected by a suitably rated circuit breaker
(or breakers) and isolator.
If in any doubt, consult a qualified electrician. DO NOT attempt any electrical
repairs yourself.
WARNING: THE INSTALLATION OF THIS APPLIANCE SHOULD BE CARRIED
OUT BY A COMPETENT ELECTRICIAN AND BE IN ACCORDANCE WITH THE
CURRENT IEE WIRING REGULATIONS (BS7671-2:2008).

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PIPE/HOSE CONNECTIONS
The pump inlet and discharge ports
are both 2” BSP (51 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.
ADDITIONAL 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 2” (51 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.
• If there is any chance of freezing, protect the pump and pipework
with suitable lagging. The formation of ice may cause serious
damage.

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SUCTION LIFT OR GRAVITY FEED
There are two possible methods of pipework installation.
1. Suction Lift. Used to draw clean water from a pool or well providing the
vertical distance between the foot valve and the pump does not exceed
the 8 metres specified for this pump.
When suction lift is used it is essential
that all connections and hoses are
airtight or the system will not work
effectively.
A foot valve/filter fitted to the lower
end of the suction hose, (as
illustrated), is essential to retain water
in the system as the pump is not self
priming.
2. Gravity Feed. Used to draw water.
from a tank above ground.

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PRIMING THE PUMP
Before using the pump for the first
time the inlet (suction) side must be
filled with water to prime the pump as
follows:-
1. With all inlet pipes/hoses, but no
outlet hose connected, pour
water into the outlet port until all
the air is expelled.
2. Connect the outlet hose to the
outlet port.
If the outlet hose is already connected, a priming port and threaded plug are
provided, adjacent to the outlet as shown.
NOTE: As the priming hole is quite small, it is necessary to fill the inlet
(suction) pipe with water before connecting to the pump, and
top up through the priming port once the pipe is connected. A
non-return valve will need to be fitted to the inlet pipe for this
purpose.
3. Switch on the pump.
• Water should start to flow through the system.
4. Check for leaks and correct if necessary.
5. Adjust any device such as a non-return valve, which may be fitted to the
outlet side of the pump, to maximise efficiency.
• Do not place any restriction on the inlet or discharge hoses.
Remember - this pump is designed for pumping CLEAN WATER ONLY. DO NOT
USE for pumping chemicals or other flammable or corrosive liquids.

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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. on
page 8.
NOTE: Refilling (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.
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 pump 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 Insert plug securely.
No power supply Check power supply and
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 block-
age. 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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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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SPECIFICATION
ACCESSORIES
Model ECP20A3
Water Classification Clean
Maximum Delivery 423 l/min (25.4m3/hr)
Rated Head 4-20 m
Maximum Suction Lift 8 m
Operating Temperature 0-40oC
Ingress Protection Rating IP x4 (splashing water)
Duty Cycle S1 Continuous
Supply 400V / 50Hz /3ph
Rated Power Input 1830 W
Outlet Thread Size 2” BSP
Weight 30.5 kg
Length x Width x Height 450 x 242 x 325 mm
Sound Pressure Level 58.0 dB LpA
Sound Power Level 66.0 dB LwA
2” BSP Plastic Foot Valve Filter FVF20 Part No:7950684
2” dia Reinforced Suction/Delivery Hose Part No:7955020
2” dia Layflat Delivery Hose 10M Part No:7955160
2” BSP Female Coupling Part No:7950320
2” BSP Male Coupling Part No:7950220
2” Hose Adaptor 90oBend Part No:7950205

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ECP20A3 PARTS DIAGRAM
ID DESCRIPTION ID DESCRIPTION ID DESCRIPTION
1 Pump Casing 14 Bolt 27 Fairlead
2 Discharge Plug 15 Pump Support 28 Foot
3 O-Ring 16 Drops Guard 29 Stator Winding
4 Nut 17 Spring washer 30 Bearing
5 Snap Ring 18 Bolt 31 Rotor
6 Washer 19 Screw 32 Bearing
7 Key 20 Terminal Box 33 Circlip
8Impeller 21Screw 34Screw
9 Circlip 22 Terminal Board 35 Back Cover
10 Washer 23 Screw 36 Bolt
11 O-Ring 24 Locking Washer 37 Fan
12 Mechaniacla Seal 25 Grounding Mark 38 Fan Cover
13 Seal Holding Disc 26 Housing

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DECLARATION OF CONFORMITY