WIKA NG 63 Betriebsanleitung Seite 28

6. Faults
Faults
Contact is no
longer switching
EN
in accordance with
the specification.
Residual current
protection device
for the circuit is
tripped.
Contact chatter
(repeated,
short-duration
opening and
closing).
No pointer
movement despite
change in pressure.
For the replacement of the instrument chapters 8 "Dismounting,
return and disposal" and 5 "Commissioning, operation" must be
observed.
28
Causes
Electrical connection
is interrupted.
Electrical load unsuit-
able for the switch
contact model.
Contact contami-
nated.
Insulation failure
Vibrations
Movement blocked.
Pressure gauge with reed contact model 851-A, for Ex areas
Measures
Carry out a continuity test
on the electrical connec-
tion lines.
Maintain the permissible
electrical loads for the
switch contact model.
Replace instrument.
Decouple the instrument
mechanically.
Replace instrument.