PEDROLLO DGF/T M/M 8.5 Manual De Uso Y Mantenimiento página 44

- Check that the inverter has been correctly connected to the power supply line
- Verify that the power supply line is active
- Check that the electric pump is correctly connected to the inverter
- Check that all cables and connections are operational.
The pump does not switch on
PROBLEM
Message Cause
None Interruption of power supply
None Fuse burned out
None Intervention of the line protections
The residual current circuit breaker has tripped to protect the inverter power
PROBLEM
line
Message Cause
None The residual current circuit breaker is
inadequate for inverter supply
PROBLEM The pump does not start
Message Cause
OFF The pump is out of service (placed
manually out of service)
PROBLEM The pump has stopped and does not restart
Message Cause
OVER
overcurrent absorption compared to set
CURRENT
value (A parameter in BASIC
PARAMETERS)
IGBT Serious excess current absorption,
(CURRENT which exceeds the capacity of the
LIMIT) inverter module
DRY - No water in the suction
RUNNING
- pump not primed
(DRY
- suction clogged
RUNNING PF)
- reverse rotation of the motor
LOW PRESS The system does not reach the
minimum pressure
LOW Tension deviation higher than - 15% of
VOLTAGE
the rating voltage
TROUBLESHOOTING
Action
Restore the power supply
Replace the fuses
Check the correct calibration of the protections
Action
Replace the residual current circuit breaker with a
model suitable for the pulsating components and in
direct current (class A)
Action
Put the pump into service by pressing the START
button
Action
- Check the correct setting of the current
- Check that the voltage under load is never too low
(min - 15%)
- that the electric pump rotates free
- that the direction of rotation is correct
- that the cables are correctly dimensioned
- check that the pump is not blocked
- reduce the motor acceleration (factory setting)
- make sure there is water at suction
- prime the pump
- check the suction
- reverse the direction of rotation of the pump motor
check that there are no cracks in the pipes.
Stabilize the voltage to keep it within the tolerance of
+/- 15%
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