9. Maintenance and Troubleshooting
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Problem
Possible Cause
Remedy
The pump does not switch on.
The power cable is not connected to the
power supply or the power supply is not
active.
Check the connection to the power
supply.
The power cable or plug is faulty.
DO NOT continue to use the product.
Contact Draper Tools for repair and
replacement options.
The fuse in the plug has blown.
Replace the fuse.
The residual circuit breaker has tripped.
Investigate the cause, then check and
reset the RCD if required.
The float switch has not been raised to a
high enough position to complete the
circuit.
Increase the volume of water in the
reservoir, lower the position of the pump
or shorten the length of cable between
the float switch and the cable clamp
recess.
The pump is operating but is not
outputting water.
The water level is below the minimum
operating level for the pump.
Increase the water level or lower the
pump where possible.
The inlet is clogged.
Inspect and clean the impellor housing.
The outlet or hose adaptor is clogged.
Remove the hose adaptor and check it
and the pump outlet for obstructions.
The head height exceeds the
capabilities of the pump.
Reduce the vertical distance that the
water must be pumped.
An air bubble has been formed inside
the pump.
Remove the pump from the reservoir
and resubmerge it at an angle, shaking
it as it is lowered to disperse any air
trapped within the mechanism.
Water is leaking from the pump or hose.
The hose adaptor o-ring is damaged or
missing.
Check and replace the hose adaptor
o-ring as necessary. Wrap PTFE tape
around the adaptor thread before
reassembly.
The output hose has been punctured.
Check the output hose for signs of splits,
kinks and obstructions.
The thermal overload activates and the
pump stops
The voltage of the power supply does
not match the product rating plate.
Disconnect the product from the power
supply and connect it to a suitable
outlet.
The pump is operating in hot water.
Allow the pump and the reservoir to cool
before restarting.
The pump has run dry.
Allow the pump to cool and adjust the
water level or pump position as
appropriate before restarting.
9.2 Troubleshooting