ENGLISH
24
Fault
Check (possible cause)
Remedy
The pump does not deliver.
Check priming.
On three-phase motors, check
that the direction of rotation is
correct.
Invert the connection of two supply
wires.
Difference in suction level too
high.
The diameter of the intake pipe is
insufficient or the horizontal
stretch is too long.
Replace the intake pipe with one
with a larger diameter.
Foot valve or intake pipe blocked.
Clean the foot valve and the intake
pipe.
The pump does not prime.
The intake pipe or the foot valve
is taking in air.
Check the suction pipe, repeat the
priming operations.
Check the slope of the suction
pipe.
Correct the inclination of the intake
pipe.
The pump supplies insufficient flow.
Foot valve or impeller blocked.
Remove clog. Replace the impeller
if weared down.
The diameter of the intake pipe is
insufficient.
Replace the pipe with one with a
larger diameter.
Check that the direction of
rotation is correct.
Invert the connection of two supply
wires.
The pump flow rate is not constant.
Intake pressure too low.
Intake pipe or pump partly
blocked by impurities.
Remove clog.
The pump turns in the opposite
direction when switching off.
Leakage in the intake pipe.
Foot valve or check valve faulty
or blocked in partly open position.
Repair or replace the faulty valve.
The pump vibrates and operates
noisily.
Check that the pump and/or the
pipes are firmly anchored.
There is cavitation in the pump.
Reduce the intake height or check
for load losses.
The pump is running above its
plate characteristics.
Reduce the flow rate.
The pump is not turning freely.
Check the state of wear of the
bearings.
Содержание KVC Series
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