Faults - WIKA LSO.25 Manual De Instrucciones

10. Faults

10. Faults
Faults
GB
No function
Flashing of the red and a
yellow LED
LED changes, signal
relay changes, however
no reaction of the outer
circuit
The signal relay switches
none over despite level
change
Instrument reacts invers
Instrument reacts
apparently not or too
slowly to level change
Test button no reaction
CAUTION!
If faults cannot be eliminated by means of the measures listed above, the
instrument must be shut down immediately, and it must be ensured that
pressure and/or signal are no longer present, and it must be prevented from
being inadvertently put back into service.
In this case, contact the manufacturer.
If a return is needed, please follow the instructions see chapter
"12.2 Return".
32
Possible causes
Power supply been cancelled Measure mains voltage, check
Transducer not connected
Cable interrupted to the
transducer
Cable short-circuited to the
transducer
Cal. P3 adjusted too far about
switching threshold
Contacts of the Relais REL 1
do not close/open
P3 adjusted wrongly, (under
switching point)
Transducer faulty
(mechanical defects)
Transducer faulty
(electrical defects)
Glass tip facing too near at
opposite surface
S1 in a wrong position
S2 open, P1, P2 on the right
stop, delay on
S2 open, P1, P2 on the right
stop, delay on
WIKA operating instructions models LSO.06, LSO.25
Measures
fuse, check terminal screws (not
soldering ends of the cable)
Transducer connect up
Check connections and cables
Check connections and cables
Adjusting in accordance with
instructions 7.2
Measure relay contacts
Adjusting in accordance with
instructions 7.2
Carrying out circuit board test.
Circuit board test faultless,
glass top on damage or dirt
approach search, clean or
exchange if under
Change transducer
see chapter 6.2.1
S1 change position
S2 close or P1, P2 turn aniti-
clockwise or wait until delay
time has passed
S2 close or P1, P2 on the left
stop shift and leave S2 open.
Pressing test button so long till
the delay time has passed