Clarke DFT12A Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC0819 iSSUE 5
12&24V DIESEL FUEL TRANSFER PUMPS
MODEL NO: DFT12A & DFT24A
PART NO: 7160042 & 7160047

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INTRODUCTION
Thank you for purchasing this CLARKE Pump.
The DFT12 & 24 pumps are designed only for use with diesel, paraffin and light
fuel oils and can be connected to vehicle batteries of either 12 or 24 Volts
respectively. They must not be used with water, petroleum fuels or alcohol, nor
if small solids are known to be in suspension.
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.
SPECIFICATIONS
Please note that the details and specifications contained herein, are correct
at the time of going to print. However, CLARKE International reserve the right
to change specifications at any time without prior notice.
Fluid Classification / Fluids to be used Clean (light fuel oil, paraffin & diesel)
Rated Max. Head (suction height) 6 m
Rated Max. Flowrate 40 litres/min (diesel)
Max. Operating Temperature 10-70oC
Max Liquid temperature 40oC
Duty Cycle 30 mins on/ 30 mins off
Weight 9.0 kg (complete kit)
Inlet & Outlet Hose Diameter 3/4” BSP nominal
Motor Voltage 12V DC (DFT12A) or 24VDC (DFT24A)
IP Rating IP54
Reserve polarity protection Yes
Sound pressure level 65 db LpA
Suction/Delivery Hose Lengths 2 m
Supply Cable lengths 2 m

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SAFETY PRECAUTIONS
Please read all of the safety and operating instructions carefully before using
this product. Keep these instructions in a safe place for future reference.
WORK AREA
1. Keep the work area clean and well lit. Cluttered and dark areas invite
accidents.
2. Do not operate power products in explosive atmospheres such as in the
presence of flammable liquids, gasses or dust. Power products create
sparks which may ignite dust or fumes.
ELECTRICAL SAFETY
1. Do not abuse the electrical cables. Keep the cables away from hot
surfaces, oil, sharp edges or moving parts. Damaged or tangled cables
increase the risk of electric shock.
PUMP SAFETY
1. Do not use this pump where there is a danger of fire.
2. Do not use to pump any liquid other than diesel, paraffin and light fuel oil.
3. Always ensure the ON/OFF switch is in the OFF (O) position, BEFORE
connecting to the battery. This is to avoid the possibility of arcing taking
place, thereby reducing the risk of fire.
4. Both models incorporate reverse polarity protection in case of incorrect
connection.
5. Switch the pump OFF as soon as the task is complete.
6. Do not exceed the duty cycle stated in the specifications.
7. Do not use the pump if the switch does not turn it on and off. Any power
product that cannot be controlled with the switch is dangerous and must
be repaired.
8. If necessary, have your pump repaired by a qualified person using
identical replacement parts. This will ensure that the safety of the product is
maintained.
ENVIRONMENTAL PROTECTION
1. Take care to ensure that if diesel fuel is spilt that it is cleaned away using
sand or treated with absorbent granules designed for the purpose.

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2. Always make every effort to contain any spillage and prevent ingress into
the local water course.
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.
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt 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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INVENTORY
ITEM DESCRIPTION
1 Rubber Outlet Hose (3/4” male BSP end fittings)
2 Transparent Inlet Hose (3/4” male end fittings)
3 Dispensing Nozzle assembly
4 Carrying Handle c/w fixing screw/washer
5 12V or 24V Pump, c/w power cables & crocodile battery clips
6 3/4” BSP to 19mm Hose Adaptors (with O-rings)
7 Foot Valve/Filter assembly
8 Hose Clamps (pair)

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CONNECTION & OPERATION
1. Fit the carrying handle to the
pump with the hex screw & washer
provided.
2. If required, the pump can be
installed in any horizontal
mounting position and mounted to
a flat surface using screws of
adequate size (not supplied)
through the mounting holes in the
base.
• The pump should not be installed at more than 6m above the fuel
supply.
3. Before connecting the pump, remove the travel plugs from the inlet/outlet
ports.
4. If not already fitted, screw the inlet filter to the plastic suction hose.
5. Screw in either:
• A) the inlet and outlet hoses
supplied or
• B) the inlet adaptors for use with
19 mm hoses
NOTE: The transparent suction hose is
connected to the side of the
pump marked “IN” and the
delivery hose to the side
marked “OUT” on the pump
casting.
• The hose and connections need to be completely air tight,
otherwise air will be drawn in and reduce the flow. If required use
PTFE tape.
6. Before connecting the delivery hose FOR THE FIRST TIME, partially fill the
pump body with fuel to facilitate priming. Ensure the hoses and tank are
free from contamination.
7. Insert the transparent suction hose & filter into the diesel fuel container.
WARNING: DO NOT USE WITH PETROL OR ANY OTHER HIGHLY FLAMMABLE
LIQUID TO DUE TO THE POSSIBILITY OF SPARKING TAKING PLACE AND
CAUSING FIRE.

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8. Ensure the ON/OFF switch is set to
the OFF (O) position BEFORE
connecting the pump cables to
the vehicle battery.
9. Ensure that the battery terminals are clean.
10. Connect the red-positive clamp to the red positive terminal first, then
connect the black clamp to the black-negative terminal, ensuring the
clamps are perfectly secure.
NOTE: The motor will not run if the clamps are connected the wrong way
round due to the in-built reverse polarity protection.
11. When disconnecting, always disconnect the black (negative) clamp first.
12. Ensure the clamps cannot be disturbed easily and that the setup is
protected from passers by.
13. Set the switch to ON (I).
• Ensure the transparent inlet suction hose and inlet filter clean as
once clogged, pump performance will quickly decline.
• Do not allow the pump to run dry for more than 30 seconds after
pumping has stopped. When finished pumping, switch off the pump.
14. During start-up it may be beneficial to open the dispensing nozzle on the
delivery hose to permit evacuation of air and achieve quicker priming.
CAUTION: ONLY CONNECT THE DFT12A PUMP TO A 12V BATTERY AND
THE DFT24A PUMP TO A 24V BATTERY.
WARNING: THIS PUMP HAS A 50% DUTY CYCLE AND SHOULD NOT BE RUN
CONTINUOUSLY FOR LONGER THAN 30 MINUTES. AFTER RUNNING, THE
PUMP MUST BE ALLOWED TO COOL FOR A PERIOD AT LEAST EQUAL TO THE
RUN TIME.

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FAULTFINDING
Problem Check Solution
Pump fails to
operate.
Check for good contact
between crocodile clips
and battery.
Check the switch is on and
that the fuse is not blown.
Pump rotor jammed.
Motor fault.
Establish good contact.
Replace fuse or switch
on.
Check for possible
damage or obstruction
of the rotating parts.
Return to Clarke Service
Department for repair.
Motor turns slowly
when starting.
Low supply voltage. Check condition of
battery.
Lack of flow delivery. Low level in the storage
tank.
Foot filter blocked.
Pump is positioned too high
above the storage tank.
By-pass valve blocked.
Air entering the pump via
the suction hose.
Narrowing of the suction
hose.
Low pump speed.
Suction tubing is resting on
the bottom of the tank.
Refill the tank.
Clean out the filter.
Position the pump lower
in relation to the tank.
Return to Clarke Service
Department for repair.
Check the security of
hose connections.
Hose is damaged,
blocked.
Check the power supply.
Raise the tubing.
Leakage from the
pump body.
Seal damaged. Return to Clarke Service
Department for repair.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
MAINTENANCE
The pump does not require any maintenance but should be inspected before
use to ensure that the power cables and clamps are in good condition and
that both of the hoses are sound.
Avoid using solvents if cleaning plastic parts, as most plastics are susceptible to
damage from various types of commercial solvents. Keep the filter on the inlet
hose free of accumulated dirt.
Store the pump in dry conditions protected from the weather.
For any problems requiring dismantling of the pump, contact your CLARKE
dealer.
Increased pump
noise
Cavitation of the liquid
being pumped.
Irregular functioning of the
by-pass.
Air present in the diesel fuel.
Reduce suction pressure
Dispense fuel until the air
is purged from the
by-pass system.
Check the suction hose
connection.

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Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
DFT12A/24A COMPONENT PARTS
PART NO DESCRIPTION PART NO DESCRIPTION
1 Screw M5 x 10 18 Cable
2 Front Cover 19 Motor 12V/24V
3 O-Ring 20 Bearing
4 Rotor 21 Circlip
5 Blade 22 Seal
6 Pump Body 23 By-pass Valve
7 By-pass Spring 24 Screw M5 x 10
8 Handle 25 Base
9 Fuse 15A/25A 26 Key
10 Fuse Holder 27 Relay-SPST
11 Single Pole Switch 28 Diode
12 Cable c/w Crocodile Clip 29 J60 3/4”nozzle
13 Junction Box 30 Suction hose with filter
14 Screw M4 x 15 31 2M outlet hose
15 Locknut 32 Securing clip
16 Tapered Bush 33 Adaptor fitting
17 Nut M5