ENGLISH
25
7. TROUBLESHOOTING.
Fault
Check (possible causes)
Remedies
−
Insufficient water.
Check the suction pipe.
−
Overheating due to the high
temperature of the fluid (above
+40°C).
Feed the pump with cold water.
−
Overheating due to blocking of
the pump.
Contact the pump supplier.
−
Voltage too low or too high.
Check the voltage of the power
supply
−
No electric power supply.
Connect to the power mains.
−
No water consumption.
Turn on a tap. Check that the height
between the highest point of the
delivery pipe and the pump is not
greater than 25 metres.
On the control panel, check the
regulation of the starting pressure
(1.5
÷
2.5
bar).
The pump
does not start.
−
The pump is in alarm status.
The pump resets automatically with
self-starts.
It is possible to reset the pump by
feeding it again, disconnecting the
voltage for a few seconds.
−
The existing pipe has a leak or is
faulty.
Repair the pipe.
The pump does not stop.
−
The check valve is blocked or
missing.
Clean the valve, dismantling the
system.
−
Dry running.
Check the suction pipe.
−
Overheating due to the high
temperature of the fluid (above
+40°C).
Feed the pump with cold water.
−
Overheating due to:
•
High environment temperature
(> 45°C).
•
Motor overload.
•
Blockage of the pump/motor.
Contact the pump supplier.
The pump stops during operation.
−
Voltage too low.
Check the power supply.
The pump starts and stops
frequently.
−
The suction pipe is leaking or
there is air in the water.
Check the suction pipe.
The pump transmits electric
discharges.
−
Faulty earthing.
Connect the earth system according
to the local regulations.
The pump starts when there is no
request for water.
−
Faulty check valve or leaks from
the existing pipe.
Clean the valve or replace it with a
new one.
If the pump does not start when the faults have been repaired, contact the pump supplier.
