Clarke DWP400A Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
GC0120 - ISS 3
ORIGINAL INSTRUCTIONS
SUBMERSIBLE PUMP
MODEL NO: DWP400A
PART NO: 7239230

2
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INTRODUCTION
Thank you for purchasing this CLARKE submersible pump.
The pump is designed for domestic use, such as drying out basements and
garages subject to flooding, and for pumping drainage wells, rainwater
collecting traps etc.
Due to its compact shape, it is also used as a portable pump for emergency
situations such as for drawing water from tanks or rivers, draining swimming
pools and fountains, excavations or underpasses. Also suitable for gardening
and general hobby activity.
This pump should not be used in swimming pools, ponds or hot tubs where
people are present, or for pumping hydrocarbons (petrol, diesel fuel,
combustible oils, solvents, etc) in accordance with the accident-prevention
regulations in force.
It is not designed for continuous use, but for emergency use over a limited
period and should be cleaned before putting away in storage. See the
section “Maintenance”.
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.
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.

3
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
SPECIFICATIONS
PUMP PERFORMANCE CURVE
Dimensions (L x W x H) 150 x 166 x 318/285 mm (handle
raised/lowered
Weight 4.65 kg
Cable Length 10 m
Power supply 230V ~ 50Hz
Ingress protection IPX8
Outlet Thread Diameter 2“BSP
Rated Power 440 W
Maximum Head Height 7 m
Maximum solids handling capability 30 mm
Maximum Flow 140 l/min
Lowest residual water 10 mm
Maximum Water Temperature 35oC

4
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
SAFETY INSTRUCTIONS
GENERAL
1. Read all these instructions before use and save them for future reference.
2. An approved residual current device (RCD) which has a tripping current of
less then 30mA MUST be used for all operations.
3. The electrical supply must be the same as that on the rating plate.
4. ALWAYS make sure that your hands are dry when connecting or
disconnecting from the mains supply.
5. NEVER pull the mains lead to disconnect the pump from the mains socket.
6. The mains plug must be kept away from the water at all times.
7. Do not allow children or unauthorised people to touch the pump, cables or
connections.
8. Disconnect the pump from the mains supply when not in use.
9. If necessary have the pump repaired by a qualified person.
10. Keep the power cable away from heat, oil and sharp edges.
11. If you have to use an extension lead with this product, it must be designed
for outdoor use and incorporate a cable suitable for use with Class I
appliances.
12. Disconnect the pump from the electrical supply and wear gloves during
servicing or maintenance.
PUMP SPECIFIC
1. Do not pump explosive / flammable liquids or chemicals.
2. NEVER allow the pump to run dry or operate out of the water.
3. Submersible pumps should always be submerged and stored vertically.
4. Disconnect the pump from the mains supply before placing it into or
removing it from the water.
5. ALWAYS check the plug and all cables for damage before use.
6. NEVER carry or lower the pump by the power cable or float switch always
use the handle or a rope tied securely to the handle.
7. 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.

5
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
8. NEVER insert your fingers into the pump whilst it is connected to the power
supply.
9. NEVER use the submersible pump in a swimming pool when there are
people or animals in the pool.
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;
• Connect the BLUE wire
to the terminal
marked N.
• Connect the BROWN
wire to the terminal
marked L.
•ConnectrtheYELLOW
AND GREEN wire to
the terminal marked E
or .
AN APPROVED RESIDUAL CURRENT DEVICE (RCD) WHICH HAS A TRIPPING
CURRENT OF LESS THAN 30 mA 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.
WARNING: THE WIRES IN THE POWER CABLE OF THIS PRODUCT ARE
COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN = EARTH
Plug must be BS1363/A approved.
Always fit
Ensure that the outer sheath of
Neutral
(Blue)
Live
(Brown)
Earth
(Green and
a 13 Amp
the cable is firmly held by the clamp
fuse.
Yellow)

6
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INSTALLING THE PUMP
Remove all packaging and make sure that the pump has no visible damage.
Dispose of all packaging appropriately.
FITTING THE ELBOW
1. Screw one of the elbows into the
outlet port as shown. Two elbows
are supplied;
• Threaded elbow
• Push-fit elbow
FITTING THE STEPPED ADAPTER
The stepped hose adaptor supplied is
designed to be used for either screw
type hose connection or push fit.
• Stepped adapter 1" (25mm) / ¾”(20mm) hose
1. Screw the adaptor to the
threaded elbow and connect a
suitable hose (not supplied) to
either the screwed end or push-fit
• Suitable hoses are available
from your local Clarke dealer.
• The stepped adaptor can be
cut off with a hacksaw if a
larger hose is to be used.
2. Trim the adaptor to size if required.
• Reducing the hose diameter will affect the maximum flow rate.
3. When push fitting the hose to the adaptor or elbow, use a jubilee clip to
secure it. Do not overtighten.

7
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
POSITIONING THE PUMP
1. Stand the pump upright on a flat surface in the water that you want to
drain.
2. If there is sediment in the pool or
pond, place the pump on blocks,
to avoid blocking the water inlet.
3. Set the height of the pump inlet
by extending and twisting the
base (foot) if required. With the
base retracted the pump can
remove all but the remaining 10
mm of water.With the base
extended the pump can pick up
more solids in suspension.
4. Ensure the pump is positioned with adequate space - minimum base area
of 20 x 25 cm and the maximum depth of any installation - 7 metres (23ft).
The pump is supplied with 10 metres of power cable.
5. Always raise and lower the pump using the lifting handle and a rope
attached to it if required. Never lift or lower the pump using the power
cable.
• The water inlet must be fully submerged before the pump is switched on
and the pump be standing upright.
• You can keep the pump clear of sediment by standing it on a platform
or brick or by suspending it at a suitable depth.
6. Connect the power cable to a high sensitivity residual current device
(RCD) which has a tripping current of less then 30mA.
OPERATING THE PUMP
1. Switch the mains power supply on.
• The pump will begin to drain water.
• As the water level falls, so will the float switch, until it stops the pump.
WARNING: CHECK THE PUMP FOR DAMAGE BEFORE USE, DO NOT USE THE
PUMP IF IT IS DAMAGED IN ANY WAY.

8
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
• You can set the position of the float switch using the clip on the side of
the pump. Adjusting the length of the float switch lead will change the
depth of water at which the pump will turn on or off.
2. The pump can be kept running
continuously by positioning the
float in the raised position but it
will need to be stopped manually
by lowering the float or
unplugging the power cable. This
method can be used to
scavenge the last remaining
water to the 10 mm limit.
3. When finished, disconnect the
pump from the power supply.
• The pump is fitted with a thermal overload switch. If the pump overheats
for any reason, it will automatically switch the pump OFF. Once the
pump has cooled (at least 5-10 minutes) it will automatically restart.
AFTER USE
If the temperature is expected to be lower than 0°C, ensure there is no
residual water in the pump which could freeze and damage the pump.
If the pump has been used with substances that tend to form a deposit, or
with water containing chlorine, rinse it after use with a powerful jet of water in
order to avoid the formation of deposits which would reduce the
performance of the pump.
MAINTENANCE
This pump should require no maintenance other than regular cleaning. If the
pump shows signs of wear or damage contact your CLARKE dealer for advice.
Check the pump regularly to ensure the water inlet is clear of leaves or other
debris. If foreign material has been drawn into the pump inlet, further cleaning
may be required by back-flushing the pump with water pressure from a hose.
CAUTION: DO NOT ALLOW THE PUMP TO RUN DRY
WARNING: BEFORE CHECKING THE CONDITION OF THE PUMP, ENSURE IT
IS UNPLUGGED FROM THE MAINS SUPPLY. IF THE UNIT IS HARD WIRED,
ENSURE THE CIRCUIT BREAKER IS OPEN.

9
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
TROUBLESHOOTING
If this does not solve your problem, please contact the CLARKE service
department. Do not attempt to repair the pump yourself. Repairs must be
carried out by your CLARKE dealer.
PROBLEM SOLUTION
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 used, check connections (consult an
electrician if in doubt).
4. Internal thermal cut-out has not re-set. Leave for 5-10
minutes to cool down 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. Float switch may be jammed against side wall, or
prevented from moving.
7. Water level too low - float switch in OFF position - lift float
to check switch.
8. If the pump still fails to start, consult your CLARKE dealer
for advice.
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
Specifications on page 3.
4. Air bubble in the pump, produced during the plunge.
Plunge 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 WILL
NOT STOP
1. Float switch may be prevented from moving to the fully
down position.
2. Float switch may be faulty. Consult your CLARKE dealer
for advice.
PUMP STOPS
RUNNING
1. Thermal overload has operated. Leave for 5-10 minutes
and try again.
2. Pump has run dry or float switch has cut in.
3. A foreign object has jammed the impeller.

10
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
PARTS DIAGRAM
Ref No Description
1 Lower insert
2Footmoulding
3Screw
4O-ring
5 Upper insert
6 Lower enclosure
7 Motor stator
8 Sealing ring
9Clip
10 O-ring set
11 Impeller
12 O-ring
13 Motor Bearing
14 Motor rotor
15 Main housing
16 Sealing ring
17/18 Collet
19/20 Bush
21 Upper enclosure
22 Capacitor
23 Clip
24 Upper cover
25 Gland
26 Screw
27 Handle
28 Handle slide clip
29 Float Switch
30 Power cable/plug
31 Screw
32 Elbow - (push on)
33 Elbow - (threaded)