Edwards nEXT200200 - 8 Fault Finding; The Pump Does Not Rotate after a Parallel Start Command Is Sent

8. Fault nding
CAUTION: CONTROLLER SAFETY
Risk of damag
e to equipment. Do not remove the controller from the pump as the
controller may be damaged.
Refer to Table: Fault nding on page 76 for the possible causes of faults and the
recommended acons to recfy faults.
Table 22 Fault nding
Symptom
The controller LEDs do not ash for 0.5 seconds when the system is set to on on page 76
The pump does not rotate aer a parallel start command is sent on page 76
The pump does not rotate aer a serial start command is sent on page 77
The pump does not respond in mul- drop mode on page 77
The green Normal LED does not light or the pump does not rotate at full speed or the pump fails while
in operaon on page 77
Ulmate pressure cannot be reached on page 77
The pump is very noisy or there is excessive vibraon or both on page 78
No serial comms on page 78
Fail signal or standby signal not working on page 79
Yellow service LED is ashing a repeated sequence on page 79
The red alarm LED is on on page 79
The red alarm LED is ashing on page 79
Other problems on page 79
Fault The controller LEDs do not ash f
or 0.5 seconds when the system is set to on
Cause The electrical supply has failed.
Remedy Make sure that the electrical supply is set to on and the fuses (and current liming
de
vices) are not tripped.
Cause The pump rotor is r
otang.
Remedy The LEDs can possibly not ash if the pump is in operaon.
Fault The pump does not rotate aer a par
allel start command is sent
Cause Check that the electricity supply is on. Check if the fail output is acv
e.
Remedy If there is a fail signal, check if the red alarm LED is ashing. If yes, refer to Flashing
error codes on page 82. If the power is supplied and fail signal is not given, but the
rotor does not rotate, the fault is in the pump.
Page 76
B85200880_D - Fault nding