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Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
TROUBLESHOOTING
Problem
Cause
Solution
Pump does not run.
Thermal protection has
been activated.
If the motor has over-
heated, wait for it to cool
down before trying
again.
Faulty power connection Check and repair con-
nection as necessary.
No mains supply
Check fused power
supply and replace fuse
if necessary (check fuse
rating). Check circuit
breaker
Impeller seized/blocked
Disconnect pump from
power supply.
Investigate cause and
clear blockage
Pump fails to prime
Air leaks through suction
hose joints (damaged
hose, broken clamp,
damaged.
Repair connections/
replace hose as
necessary.
Blocked inlet hose
Check pipeline for
blockage. Check any
inlet valve fitted is fully
open.
Pump runs but gives poor
output
Congested material
inside pump
Clean out & backflush
pump.
Suction or delivery line
obstructed.
Remove obstruction and
ensure there are no kinks
in delivery line.
Inlet pipe leakage.
Check inlet pipe and
connector for leaks.
Tighten as required.
Air leaks through
damaged seal.
Renew seal.
Impeller damaged and
making poor seal.
Return to your Clarke
dealer for repair
Impeller / mechanical
seal is badly worn.
Return to your Clarke
dealer for repair.
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