En
gl
is
h (
G
B)
10
6. Fault finding
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product. Make
sure that the power supply cannot be
accidentally switched on.
Fault
Cause
Remedy
1.
The pump does
not start.
a)
Supply failure.
Cut in the circuit breaker or replace the fuses.
If the new fuses also blow, check the electric
installation.
b)
The pump is blocked by
impurities.
Clean the pump. Check or replace the strainer
in the inlet pipe.
c)
The motor is defective.
Replace the pump.
2.
The pump runs,
but gives no or just
a little water.
a)
The pump is not filled with
water.
Prime the pump. See section
.
b)
The inlet pipe is blocked by
impurities.
Clean the inlet pipe. Check or replace the
strainer in the inlet pipe.
c)
The pump is blocked by
impurities.
Clean the pump. Check or replace the strainer
in the inlet pipe.
d)
The suction lift is too high.
JPA, JPC: Maximum 7 m.
JPD: Maximum 27 m.
Change the position of the pump.
e)
The inlet pipe is too long.
Change the position of the pump.
f)
The diameter of the inlet pipe
is too small.
Replace the inlet pipe.
g)
The inlet pipe is not immersed
deeply enough.
Make sure that the inlet pipe is immersed
sufficiently.
h)
The inlet pipe is leaking.
Repair or replace the pipe.
3.
The pump runs,
but gives no water
or delivers a
reduced quantity
of water at high
pressure.
a)
The outlet pipe is blocked.
Clean the pipe or open the isolating valves, if
fitted.
Check that no additional work is being carried
out in the system.
4.
The motor cuts out
during operation.
a)
The thermal switch in the
motor has tripped due to
overheating.
The thermal switch will cut in automatically
when the motor has cooled sufficiently.
If the problem persists, check these two
possible causes:
• The impeller is stuck.
Clean the pump.
• The motor is defective.
Replace the pump.
