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11
REPAIR GUIDE
PROBLEM
The motor runs normally, but the
water drains slowly.
The water drains slowly and the
motor works intermittently.
The pump doesn't start. The
water doesn't evacuate.
The motor hums and it does not
evacuate the water.
The water doesn't evacuate and
the motor runs for a long time.
After discharging the water, the
motor restarts several times
before stopping completely.
The motor runs noisily, without
either stopping or pumping.
The motor runs, but makes a
strange noise.
The water backs up into the
shower tray or bathtub.
CAUSE
The discharge pipe is blocked.
Possible that the check valve is
half closed.
Ventilation system blocked.
There is no power going to the
pump. Thermal overload cut out.
A foreign body is blocking the
impeller. Faulty capacitor.
Evacuation pipe blocked.
Partially blocked impeller.
Water is flowing back into the
pump. The check valve doesn't
close properly.
Siphoning or lack of counter
pressure in the drainage pipe,
creating an air pocket.
Presence of a foreign body.
A foreign body has fallen into
the pump.
The outflow by gravity in the
pump is inadequate. Faulty inlet
control flap or blockage in drain
pipe.
SOLUTION
Clean the discharge pipe
Inspect the check valve.
Inspect the ventilation system.
Wait for the thermal overload to
disengage (about 20-30 minutes)
Contact an authorized technician.
Contact an authorized technician.
Drain clear water to free the
check valve or remove the valve
and clean it.
Modify the evacuation piping
in such a way as to eliminate
siphoning or increase the coun-
ter pressure (for example using
smaller pipes, add a bend in the
pipe). If the problem continues,
contact an authorized techni-
cian.
Contact an authorized technician.
Make sure that the gravity fall
is at least
1
/
" per foot into the
4
pump from the sanitary fixtures.
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