Endress+Hauser nivotester FTL 325 P-1 Manual De Instrucciones página 36

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e Trouble-shooting
36
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 FTL 325 P
Permanent
Interrupt or short-circuit line to
alarm signal
measuring transmitter
Measuring transmitter
electronics defective
Switches
FEL 57,
incorrectly after
Behaviour during switch-on
power failure
test (functional test)
Remedy
Check power
Replace FTL 325 P
Replace FTL 325 P;
connect a fuse into contactor
circuit
Replace measuring transmitter
Correctly set change-over
switch behind front panel
(p. 15...19)
Check line
Replace measuring transmitter
electronics
Observe switching behaviour
of FEL 57;
after a power failure block
the system control for up to
about 45 s
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