Clarke CGP870 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
GC08/22
ORIGINAL INSTRUCTIONS
870W GRINDER/SLURRY PUMP
MODEL NO: CGP870
PART NO: 7230291

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INTRODUCTION
Thank you for purchasing this CLARKE submersible pump designed for
pumping/grinding waste water containing light slurry or sewage.
The CLARKE range of submersible pumps are suitable for discharging pools,
ponds, fountains, pits and any waste water drainage. They can handle foul
water containing suspended material as listed in the specification. The pumps
are not suitable for handling inflammable, corrosive, explosive or dangerous
liquids.
The ‘Pump Performance Curve’ graph shown, displays the characteristics
graphically and describes the relation between the flow-rate and the head
for the pump.
The pump is provided with a thermal overload cut-out, so that in the event
that the pump becomes overheated (due to becoming blocked etc) it will
shut off automatically. When the blockage has been cleared, the thermal
cutout will cool down and re-set and the pump can be re-started.
Before attempting to use this product, it is essential that you read this manual
thoroughly and carefully follow all instructions given. In doing so you will ensure
the safety of yourself and that of others around you, and you can also look
forward to the product giving you long and satisfactory service.
SPECIFICATIONS
Voltage 230V~50Hz
Outlet Thread Diameter 1¼“BSP
Power 870W
Ingress protection rating IP68
Maximum Head Height 10 m
Maximum Depth 8 m
Maximum Flow 140 L/min
Minimum pick up water depth 50mm
Maximum Operating Temperature 40oC
Weight 15 kg
Cable Length 10 m
Dimensions (D x W x H) 215 x 170 x 305 mm

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OVERVIEW & FEATURES
1. Water inlet screen
2. Power cable with plug
3. Outlet hose adaptor
4. Lifting handle
Pump Performance curve

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SAFETY PRECAUTIONS
WORK AREA
1. Keep the work area clean and well lit. Floors should always be kept clear.
Cluttered or dark areas invite accidents.
2. Keep children and bystanders away while operating the pump.
Distractions can cause loss of control.
3. Remember, the operator or user is responsible for accidents or hazards
occurring to other people or their property.
PERSONAL SAFETY
1. ALWAYS stay alert, watch what you are doing and use common sense
when operating this pump. Do not install the pump while you are tired or
under the influence of medication, drugs or alcohol. A moment of
inattention can result in personal injury.
2. DO NOT over-reach. Keep your proper footing and balance at all times
when positioning the pump.
3. NEVER direct the water discharge towards electrical wiring or equipment.
4. ALWAYS store the pump out of reach of children and do not allow persons
unfamiliar with these instructions to operate it.
5. NEVER direct the discharge flow towards another person.
6. ALWAYS thoroughly familiarise yourself with this pump & its operation and
follow all instructions in this manual.
7. ALWAYS ensure that the pump is properly positioned where necessary to
prevent it from moving during operation, and that the immediate area
surrounding the pump is kept clear.
GENERAL USE AND CARE OF THE PUMP
1. An approved Residual Current Device (RCD) must be used when pumping
from ponds or swimming pools.
2. ALWAYS lift the pump using the handle and use a rope or chain attached if
necessary to lower it into the water. NEVER lift or carry the pump by the
power cable.
3. NEVER use this pump if any part is damaged. ALWAYS check the plug,
mains cable for damage before use. Have any damage inspected and
repaired by your local CLARKE dealer.

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4. ALWAYS use an approved cable extension suitable for the power rating of
the pump (see specifications). The conductor size should also be at least
the same size as that on the pump, or larger. When using a cable reel,
always unwind the cable completely.
5. ALWAYS maintain the pump with care and keep it clean.
6. NEVER use for pumping flammable liquids or corrosive chemicals. These
pumps are designed to pump water only.
7. NEVER abuse the electrical cable. Never use the cable for pulling or
unplugging the pump. Damaged or tangled cables increase the risk of
electric shock.
8. NEVER run the pump dry. Ensure the pump is immersed in water before
starting. Switch the pump off immediately when the task is completed
9. NEVER pump water from a swimming pool when there is a person or animal
still in the pool.
10. NEVER install the pump on sand, silt or mud which is likely to shift or
collapse.
11. NEVER modify the pump in any way. Use it only for the purpose for which it
is designed.
12. NEVER allow the pump to run dry or operate out of the water.
13. Submersible pumps should always be submerged and stored vertically.
14. Disconnect the pump from the mains supply before placing it into or
removing it from the water.
15. NEVER insert your fingers into the pump whilst it is connected to the mains.
16. Keep the pump clear of any sediment by standing it on a platform or brick
or suspending it at a suitable depth.
17. DO NOT use the pump if the water is liable to freeze, as this can cause
damage to the pump. Remove the pump from the water and store it in a
frost free location.
SERVICING & REPAIRS
1. 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.
2. NEVER attempt any repairs yourself unless suitable qualified. If you have a
problem with the pump contact your local CLARKE dealer.
3. ALWAYS disconnect the pump from the electrical supply before placing it
into, or removing from the water, and before any cleaning or
maintenance.

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4. If the power cable becomes damaged, it must be replaced rather than
repaired.
5. 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.
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.
This product contains valuable raw materials. Metal products should be
takento your local civic amenity site for recycling of metal products. Recycle
unwanted materials instead of disposing of them as waste. All unwanted
accessories and packaging should be sorted and taken to a recycling centre
for disposal in a manner which is compatible with the environment.

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ELECTRICAL CONNECTIONS
Connect the mains lead to a standard, 230 Volt (50Hz) electrical supply
through an approved 13 amp BS 1363 plug, or a suitably fused isolator switch.
If the plug has to be changed because it is not suitable for your socket, or
because of damage, it must be removed and a replacement fitted, following
the wiring instructions shown below. The old plug must be discarded safely, as
insertion into a power socket could cause an electrical hazard.
If the colours of the wires in the power cable do not agree with the markings
on the plug proceed as follows.
• The BLUE wire must be
connected to the
terminal marked N or
coloured black.
• The BROWN wire must
be connected to the
terminal marked L or
coloured red.
• The YELLOW AND
GREEN wire must be
connected to the
terminal marked E or
or coloured green.
AN APPROVED RESIDUAL CURRENT DEVICE (RCD) WHICH HAS A TRIPPING
CURRENT OF LESS THAN 30MA MUST BE USED.
If you are not sure, consult a qualified electrician. DO NOT try to do any
repairs.
WARNING: READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE MAINS
SUPPLY.
Plug must be BS1363/A approved.
Always fit
Ensure that the outer sheath of
Neutral
(Blue)
Live
(Brown)
Earth
(Green and
a 10 Amp
the cable is firmly held by the clamp
fuse.
Yellow)

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CONNECTION AND POSITIONING
Remove all packaging and make sure that the unit contains no visible
damage. Dispose of all packaging appropriately.
CONNECTING THE PUMP
1. Connect the outlet adaptor to the hose.
• The adaptor fitting allows for connection of 32 mm (1¼”), hoses which
should be secured with a hose clamp.
2. If a long run of discharge hose is being used, any restriction will reduce
capacity and put unnecessary strain on the motor
• Suitable hoses are available from your local CLARKE dealer.
POSITIONING THE PUMP
1. It may be safer to raise and lower the pump into deep water using a rope
attached to the lifting handle.
2. Place the pump in a vertical position resting on a firm, flat surface in the
area that you want to drain. If there is sediment in the operating area, the
pump should be placed vertically on house bricks, or similar but ensure
they are not likely to collapse. Never position the pump on sand, silt, mud
or ground which is likely to collapse.
3. Keep the pump clear of sediment by standing it on a platform or brick or
suspending from a rope attached to the handle if the pump is to be used
where there may be silt or mud etc (e.g. garden ponds).
4. Route the hose as straight as possible. Excessive bending of the hose could
obstruct the flow of water, reduce the pumping volume or clog the pump
with mud, thus disabling the pumps function. If the hose is kinked at its base
it will create air pockets in the pump, causing it to operate in a partially dry
state. Take care to straighten any kinks or bends in the hose.
5. DO NOT operate the pump if the water is too shallow. This will be below the
level of the outlet elbow with the impeller fully immersed.
6. Allowance must also be made for the overall width of the pump including
the outlet elbow on one side.
• When the pump is being used in a permanent or semi-permanent
installation, a non-return valve should be fitted in the delivery hose.
Suitable hoses and valves are available from your CLARKE dealer.
• Take all necessary safety precautions as described on pages 4-6.
• The pump inlet must be fully submerged before being switched on.

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USING THE PUMP
1. Plug in the pump and switch on the power supply.
• The pump will begin to drain water.
2. Run the pump continuously or remove from the water and store in a frost
free location if the water is likely to freeze.
3. Ensure the pump is switched off when water has stopped flowing.
• The pump should be able to clear water down to a residual depth of the
inlet port, In this situation, air and residual water may be seen escaping
from the discharge hose.
4. Disconnect from the power supply when the water has been pumped out.
Avoid running the pump continuously if the discharge hose has become
obstructed and water is not flowing.
5. DO NOT ALLOW THE PUMP TO RUN DRY
6. Disconnect the pump from the mains supply before placing it into or
removing it from the water.
7. NEVER insert your fingers into the pump whilst it is connected to the mains.
8. DO NOT use the pump if the water is liable to freeze, as this can cause
damage to the pump. Remove the pump from the water and store it in a
frost free location.
OVERLOAD PROTECTION
These pumps are fitted with automatic thermal overload protection.
If the pump overheats due to an obstruction in the pump, or pumping warm
water for example, it will shut off automatically.
Switch the pump OFF at the mains supply. Check for blockages and allow the
motor to cool (at least 5 minutes) by which time the cut-out will have reset.
Once the pump has cooled the pump will automatically restart.
WARNING: CHECK THE PUMP FOR DAMAGE BEFORE USE, DO NOT USE THE
PUMP IF IT IS DAMAGED IN ANY WAY.

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CLEANING, MAINTENANCE & STORAGE
The pump should require no maintenance other than regular cleaning.
1. Inspect the pump prior to use and do not use the pump if there is any
damage to the mains power cable.
2. Check pump regularly to ensure the inlet is clear of leaves or other debris. It
can be cleaned out either by back-flushing or by cleaning out by hand.
Take extra care to remove any debris from around the impeller.
3. If the pump has been used for pumping swimming pool water or salty
water likely to leave chemical residues, it should be flushed through with
clean water before storage.
4. When the pump is not being used for extended periods, clean and dry it
thoroughly and store in indoors. if the pump is left in water, it should be run
at least once a week to prevent it from seizing up.
5. If the pump shows signs of wear or damage, contact your CLARKE dealer
for advice. Do not attempt to repair the pump yourself, as you may
damage the waterproof seals and invalidate your guarantee. Repairs
should be carried out by your local CLARKE dealer, or contact the CLARKE
Service Department on 020 8988 7400.
WARNING: MAKE SURE THAT THE PUMP IS DISCONNECTED FROM THE
POWER SUPPLY BEFORE CLEANING OR PERFORMING MAINTENANCE

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TROUBLESHOOTING
If this does not solve your problem, please contact the Clarke service
department.
PROBLEM CAUSE AND REMEDY
PUMP WILL
NOT START
1. Make sure that the power is switched on.
2. Check fuse (consult an electrician if in doubt).
3. If extension lead is fitted, check connections (consult an
electrician if in doubt).
4. Internal thermal cut-out has not re-set. Leave for 5-10
minutes and try again.
5. The impeller may be jammed. Disconnect from the mains
supply and remove any objects that may be obstructing
the impeller.
6. If the pump still fails to start, consult your CLARKE dealer.
PUMP WILL
START BUT NOT
PUMP
1. Check that the inlet is not blocked.
2. Check that the discharge tube is not clogged or
obstructed.
3. The head may be too great, i.e. you are trying to lift the
water too great a distance for the pump to cope with.
4. Air bubbles in the pump, produced during immersion.
Immerse the pump again, at an angle, and shake it whilst
lowering to remove any air trapped in the system.
5. Impeller may be damaged - Consult your CLARKE dealer.
PUMP STOPS
RUNNING
1. Thermal overload has operated. Leave for 5-10 minutes
and try again.
2. A foreign object has jammed the impeller.

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COMPONENT PARTS

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COMPONENT PARTS
USEFUL ACCESSORIES FROM THE CLARKE CATALOGUE
Hoses, clips and other items are available from your CLARKE dealer.
1 Motor cover 17 O-ring
2 Motor housing 18 O-ring
3 Bearing cover 19 O-ring
4 Strainer base 20 Washer
5 Rotor and shaft 21 Gasket
6 Stator and coil 22 Gasket
7 Flat washer 23 Outlet connector
8 Pump housing 24 Handle ring
9 Impeller 25 Washer
10 Capacitor 26 Power cable
11 Cutter 27 Threaded connector
12 Cutter ring 28 Screw
13 Bearing 29 Screw
14 Bearing 30 Spring washer
15 Mechanical seal 31 Bolt
16 Oil seal 32 Bolt
Hoses Hose Clips
• Available in 100 metre coils or per
meter.
• Zinc plated for corrosion
resistance.

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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.

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DECLARATIONS OF CONFORMITY