Endress+Hauser Nivotester FTW 325 Manual Del Usuario página 43

Fault Reason
Does not switch No power
(green LED does not light up)
Electronic defect
Contacts welded together
(after short-circuit)
Measuring transmitter
defective
Switches Incorrect setting of
incorrectly change-over switch for limit
signal in FTW 325
Permanent Interrupt or short-circuit line to
alarm signal measuring transmitter
Measuring transmitter
electronics defective
Nivotester defective
Endress+Hauser
Remedy
Check power
Replace FTW 325
Replace FTW 325;
connect a fuse into contactor
circuit
Replace measuring transmitter
Correctly set change-over
switch behind front panel
Check line
Replace measuring transmitter
electronics
Replace Nivotester
Trouble-shooting
d e
43