ENERGY SAVING
28
Maintenance, warranty and disposal
12 Maintenance
The circulator does not require any special maintenance during operation.
Motor bearings are lubricated by the pumped liquid.
Before each maintenance intervention, disconnect power supply and
wait for the circulator to cool.
13 Faults, causes and remedies
13.1 Fault finding table
FAULTS
CONTROL PANEL
CAUSES
REMEDIES
The circulator is noisy
LED on
Suction pressure is insuffi-
cient - cavitation
Increase the system suction
pressure within the permissi-
ble range.
LED on
Presence of foreign bodies
in the impeller
Disassemble the motor and
clean the impeller
Loud noises of water
circulation
Flashing white LED
Air in the system
Vent the system (
→ 9.4
Automatic detection of
the presence of air - Vent
system
.)
LED on
The flow is too high
Reduce the rotation speed
(
→ 10 Circulator setting
)
Circulator is not
running although the
electrical power supply
is switched on
LED off
Insufficient supply voltage
Verify voltage value of the
electric plant.
Verify the connection of
the motor
One fuse in the installation
is blown
Verify the fuses of the plant
The circulator is defective
Replace the pump
Overheating
Let the pump cool down for
some minutes. Then try to
re-start it.
Verify that the water and
ambient temperature are
within the indicated temper-
ature ranges.
