Troubleshooting - Clas Ohlson WWB-07302 Instruction Manual

Bilge pump 12 v art.no. 34-7785
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Storage
The pump can withstand low temperatures but should never be used if the water
in or around it has frozen. Allow the ice to melt before running the pump.

Troubleshooting

Trouble
Reduced power
No water is pumped
The pump does
not stop
The pumps
wiring overheats
Possible cause
Clogged filter.
Clogged outlet hose.
Low battery.
Faulty wiring.
Blown fuse.
Faulty float switch.
The float switch is stuck.
The float switch is placed
too low.
Combination of clogged
impeller and wrong fuse.

Remedy
Clean the filter and check that
the pump inlet is not clogged.
Check and clean/flush outlet
hose. Check the hose for kinks.
Check and recharge battery.
Check that the wiring is intact
and not corroded. Check that
none of the wires is exposed
to water.
Check the fuse and replace it
if necessary. If the fuse blows
again, check that the pump
impeller can rotate freely.
Check it by lifting the float. If the
pump starts, the switch works.
Clear the float switch of any
debris, etc.
If the float switch is positioned
lower than the pump, the pump
will just pump air until the water
level has dropped and shut off
the pump. Always mount the float
switch higher than the pump inlet.
Clean the pump filter, impeller
and outlet hose. Replace the
fuse with one of the correct
rating (15 A).

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