Clarke DW50 Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
LS0518 ISS 2
ORIGINAL INSTRUCTIONS
ENGINE DRIVEN 2” DIESEL PUMP
MODEL NO: DW50
PART NO: 7230170

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INTRODUCTION
Thank you for choosing this Clarke Pump.
The function of this pump is to move clean /dirty water (with solids in
suspension upto 10-12 mm in diameter).
DO NOT use it to pump:
•Sewage
• Dangerous liquids.
• Salt water
Before you use this pump read the manual fully.
GUARANTEE
This pump 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 pump has been abused, tampered with, or not
used for its primary function.
Faulty goods must be returned to their place of purchase, no pump can be
returned to us without prior permission.
This guarantee does not effect your statutory rights.
INVENTORY
You should find the items in the list below in the carton.
Speak to your Clarke dealer if items are missing or damaged.
1 x Diesel Powered Water Pump 2 x Rubber Sealing Rings
2 x 2" Hose adaptors 2 x 2" Hose clips
1 x Inlet Strainer (in two pieces) with 2" Hose
Coupling/clip

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
GENERAL SAFETY RULES
1. ALWAYS obey all safety precautions for the handling of fuel.
2. ALWAYS make sure that you are familiar with this pump, and follow all
instructions in this manual.
3. ALWAYS make sure that the pump is positioned correctly to prevent it from
moving during operation.
4. Keep the area adjacent to the pump clear.
5. ALWAYS connect the strainer to the suction hose to stop stones and other
solids from being pulled into the pump. These can cause damage to the
pump.
6. ALWAYS keep the pump dry and clear of the discharge hose.
7. Only use parts supplied by the manufacturer. Using non-standard parts can
be dangerous.
8. ALWAYS use at least 300mm of flexible hose to make plumbing connections
to the pump. Rigid piping can put stress on the pump, causing damage. If
you use rigid piping, it must be supported to eliminate strain on the
connections.
9. DO NOT refuel the engine while it is operating and let the engine cool
sufficiently before refuelling.
10. DO NOT use to pump petrol (or other flammable liquids), or corrosive
chemicals. The function of this pump is to pump WATER ONLY.
11. DO NOT operate this pump in an explosive atmosphere, near combustible
materials, or where there is insufficient ventilation.
12. DO NOT let children use this pump.
13. DO NOT run the pump dry. Always fill the pump with water before starting.
14. DO NOT direct the discharge flow towards another person.
15. DO NOT over-tighten drain or filler plugs. Excessive force can damage the
threads or the pump body.
16. DO NOT direct the water discharge towards electrical wiring or equipment.
WARNING: WHEN USING PUMPS, ALWAYS FOLLOW BASIC SAFETY
PRECAUTIONS TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK AND
PERSONAL INJURY. READ ALL INSTRUCTIONS BEFORE YOU
OPERATE THIS PUMP AND SAVE THEM FOR FUTURE REFERENCE.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
GENERAL SAFETY IN THE WORKPLACE
1. Always keep work area clean & tidy. Cluttered work areas invite accidents.
2. Never over-reach. Keep proper footing and balance at all times.
3. Always make sure that the workplace is well lit. Make sure that that lighting
is placed so that you will not be working in your own shadow.
4. Dress correctly. Loose clothing or jewellery can get caught in moving parts.
Non-slip footwear is recommended. Wear protective hair covering to
contain long hair.
5. Always wear safety glasses. (Everyday glasses are not safety glasses).
CARE OF PUMPS
1. Always examine the pump for damage that can effect the operation.
2. The Clarke service department will only replace damaged components
using original spare parts.
Keep the instructions for future reference.
SAFETY SYMBOLS
The meanings of the markings and symbols on the pump are shown below.
ENVIRONMENTAL PROTECTION
At the end of its working life, do not discard this pump or its components with
general household waste. Packaging must be taken to a recycling centre and
discarded appropriately.
Read this manual before use and keep it for future reference

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
ASSEMBLY
INSTALL THE SUCTION HOSE
1. Put the rubber washer into the
adaptor.
• Make sure that it is seated
correctly.
2. Screw the adaptor onto the
pump.
• PTFE tape can be used to
ensure a good seal.
3. Slide the hose on to the adaptor
and lock in position with the hose
clip supplied.
• 2" Reinforced Hose is available
from your Clarke supplier (Part
number - 7955020)
4. Install the strainer on to the other
end of the hose following the
picture on the right.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INSTALL THE DISCHARGE HOSE
1. Put the rubber washer into the
adaptor.
• Make sure that it is seated
correctly.
2. Screw the adaptor onto the
pump.
• PTFE tape can be used to
ensure a good seal.
3. Slide the hose on to the adaptor
and lock in position with the hose
clip supplied.
• 2" Reinforced Hose is available
from your Clarke supplier (Part
number - 7955020)
• 2" Lay Flat Hose is available
from your Clarke supplier (Part
number - 7955160)

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
BEFORE USE
POSITIONING THE PUMP
For optimum performance, place the pump near the water level and use
hoses that are no longer than necessary.
As “head” (pumping height) increases, pump output decreases. The length
and size of the suction and discharge hoses can also effect pump output.
The discharge head is always greater than the suction head, so it is important
for the suction head to be the smaller part of the total head.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
CHECK THE ENGINE OIL LEVEL
1. Turn the oil filler cap anti-
clockwise and remove from the oil
filler tube.
2. Wipe the dipstick clean with a lint
free cloth.
3. Slide the dipstick into the oil filler
tube and remove it again. Do not
screw in the oil filler cap/dipstick
when doing this.
4. If the oil level is at or below the
‘Lower level’ mark on the dipstick,
Fill the crankcase with oil to the
‘Upper level’ mark.
• Oil capacity is 1 Litre.
• We recommend you use
SAE15W40 oil in this pump,
available from your Clarke
dealer.
5. Replace the oil filler cap.
WARNING: TO DO THIS CHECK, STAND THE PUMP ON LEVEL GROUND
WITH THE ENGINE SWITCHED OFF.
WARNING: BE CAREFUL NOT TO TOUCH HOT PARTS OF THE PUMP
WHEN CHECKING THE OIL LEVEL.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
ADD DIESEL FUEL
RECOMMENDED FUEL
Only use regular diesel.
1. Remove the fuel filler cap.
• Inside the fuel tank is a fuel filter
which collects contaminants as
you refuel.
2. Slowly add fuel to the fuel tank.
• Make sure that the fuel level is
not above the maximum fuel
level mark in the fuel filter.
3. Replace the fuel tank cap.
WARNING: REFUEL IN A VENTILATED AREA, AWAY FROM SOURCES
OF IGNITION.
WARNING: IF THE ENGINE IS HOT, LET IT COOL BEFORE REFUELING.
WARNING: KEEP FUEL OUT OF THE REACH OF CHILDREN.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
OPERATION
PRIME THE PUMP
1. The pump MUST be primed before
use.
2. Before starting the engine,
remove the filler cap from the
pump chamber.
3. Fill the pump chamber and inlet
hose with water.
NOTE: A foot valve (not supplied)
connected to the lower end
of the inlet hose between
the hose and the strainer will
help to maintain priming,
4. Replace the filler cap and tighten
it securely.
WARNING: WHEN YOU OPERATE THE PUMP, THE EXHAUST MUFFLER
WILL BECOME VERY HOT.
WARNING: DO NOT OPERATE THE ENGINE IN A CLOSED SPACE,
MAKE SURE THAT THERE IS SUFFICIENT AIRFLOW AROUND THE
PUMP.
WARNING: OPERATING THE PUMP DRY WILL DESTROY THE PUMP
SEAL. IF THE PUMP IS OPERATED DRY, STOP THE ENGINE
IMMEDIATELY, AND LET THE PUMP COOL BEFORE PRIMING