11 Malfunctions
11.1 Malfunction and fault indication
Read the safety instructions for maintenance (see chapter "Maintenance safety instructions").
When a problem occurs, the user is warned by:
● Activation of the fault/warning LED
● Audible warning of the HHR (if enabled)
● Activation of the fault contacts on the
REMOTE
connector
● Pumping interruption when the
‘Stop’
order has not been activated
● Fault/warning message displayed on the HHR
● A message via the RS-232/RS-485 serial link
● A message via the fieldbus.
Meaning of the LED
The LED configuration varies depending on the type of electronic interface.
● Yellow LED on/red LED flashing = warning
● Red LED on = presence of a fault, pump stops
For monitoring operation
(see chapter “Operation monitoring”, page 41)
.
Recommissioning after a stop due to a fault
During the pump stop following a fault, the speed variator is switched off and the pump is put in a safe
condition. To restart the pump, you must:
1. Switch the power off and
wait until the rotor has stopped
.
– Set the switch on the 48 VDC external power supply to
O
.
2. Wait approximately 15 seconds.
3. Correct the cause of the fault.
4. Restore power supply.
– Set the switch on the 48 VDC external power supply to
I
.
11.2 Malfunction
Start-up problem and incorrect operation
Symptom
Cause
Remedy
When the device is powered on,
nothing happens and no indicator
light is on.
No power supply
● Check that the external power supply 48 VDC is
correctly powered.
● Check that the pump is powered with 48 VDC.
● Check the chaser when powering on the device.
● Contact our service center.
The pump vibrates as its speed in-
creases.
Mechanical problem
● Check that the pump is securely fastened to the
frame (see chapter “Installation specifications”).
● Check that the installation does not cause vibra-
tions.
● Check that the installation is correctly fastened to
the floor (this problem may result from an anti-vi-
bration flagstone).
● If the fault occurs again, contact our service cen-
ter.
The red LED of the electronic drive
unit is on.
Pump is faulty.
● Connect the serial link.
● Display the fault list via RS-232/RS-485 serial link
(enter the command: #DEF).
Malfunctions
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