ITT Lowara FLC Serie Notice D'utilisation page 15

8. TROUBLESHOOTING
PROBLEM
THE CIRCULA-
TION PUMP IS
NOISY
THE CIRCULA-
TION PUMP
DOES NOT
START
THE CIRCULA-
TION PUMP
STOPS
POSSIBLE CAUSES
a) Inlet pressure
low:
b) Incorrect direction of
rotation:
c) Air present:
d) Unsuitable speed:
e) Foreign bodies in the
impeller:
a) The circulation pump
is not plugged in:
b) The capacitor is faulty
(single-phase):
c) The motor is jammed: c) - If the motor is set to an intermediate or mini-
a) A fuse has blown:
b) The thermal
load protection has
tripped:
c) The motor is out of
order:
REMEDIES
too a) Increase the pressure in the circuit.
b) Check the motor is turning in the right direc-
tion.
c) Make sure the system has been vented.
d) Check the point of operation and choice of
speed and change if necessary.
e) Dismount the motor and clean the impeller.
a) Check the electrical connections of the motor.
Check the system fuses.
Check the voltage.
b) Replace: consult the technical specifications
indicated on the rear plate (μF).
mum speed, move the selector to maximum
speed
- If the motor still refuses to start at full speed,
remove the motor from the pump body and
release it by turning the impeller by hand.
a) Check the fuses.
over- b) - Check the temperature of the water.
- Check the mains power supply.
c) Dismount and replace with a motor unit of the
same type.
en
15