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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
TROUBLESHOOTING
PROBLEM
SOLUTION
Pump hums
but does not
run
1. Impeller partially clogged. Raise pump and clean.
• If pump is clear, motor could be defective.
Pump runs but
does not
deliver water
or only delvers
a small
amount
1. Check or non-return valve is installed backwards. Arrow
on valve should point in direction of flow.
2. Discharge shut-off valve if used, may be closed. Check
that the outlet is not clogged or obstructed.
3. Impeller partially clogged. Raise pump and clean.
4. Air bubble in the pump, produced during immersion.
immerse the pump again, at an angle, and shake it whilst
lowering to remove any air trapped in the system.
5. Inlet at base of pump is blocked. Raise pump and clear
openings.
6. Vertical pumping distance too high. Reduce height or
change the pump discharge fitting.
7. Impeller may be damaged - Consult your CLARKE dealer.
Pump runs but
will not stop
1. Float switch may be prevented from moving to the fully
down position.
2. Faulty float switch. Consult your CLARKE dealer.
Pump will not
start
1. Make sure that the power is switched on.
2. Check fuse (consult an electrician if in doubt).
3. If an extension lead is fitted, check connections (consult
an electrician if in doubt).
4. Internal thermal cut-out has not re-set. Leave for 5-10
minutes 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. If the pump still fails to start, consult your CLARKE dealer
for advice.
Summary of Contents for 7236042
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