Endress+Hauser Nivotester FTW325 - Trouble-Shooting

42 Endress+Hauser
en - Trouble-shooting
Fault Reason Remedy
Does not
switch
No power
(green LED does not light up)
Check power
Electronic defect Replace FTW325
Contacts welded together (after
short-circuit)
Replace FTW325;
connect a fuse into contactor circuit
Measuring transmitter defective Replace measuring transmitter
Switches
incorrectly
Incorrect setting of change-over
switch for limit signal in FTW325
Correctly set change-over switch
behind front panel
Permanent
alarm signal
Interrupt or short-circuit line to
measuring transmitter
Check line
Measuring transmitter electronics
defective
Replace measuring transmitter
electronics
Nivotester defective Replace FTW325