Trouble Shooting - WIKA E-10 Mode D'emploi

9. Trouble shooting

9. Trouble shooting
WARNING!
Open pressure connections only after the system is without pressure!
■
Take precautions with regard to remaining media in removed pressure transmit-
■
ters. Remaining media in the pressure port may be hazardous or
toxic!
Remove the pressure transmitter from service and mark it to prevent it from being
■
used again accidentally, if it becomes damaged or unsafe for operation.
Have repairs performed by the manufacturer only.
■
Do not insert any pointed or hard objects into the pressure port for cleaning to prevent damage to
the diaphragm of the pressure connection.
Please verify in advance if pressure is being applied (valves/ ball valve etc. open) and if the right
voltage supply and the right type of wiring (2-wire/ 3-wire) has been chosen?
Failure
No output signal
No/False output signal
Output signal unchanged after change
in pressure
Output signal unchanged after change
in pressure
WIKA operating instructions, models E-10, E-11
Possible cause
No/incorrect voltage supply or current
spike
Cable break
Incorrectly wired (e.g. Connected as
2-wire instead of 3-wire system)
Mechanical overload through overpres-
sure
Wrong supply voltage or current spike
Procedure
Mechanical overload through overpres-
sure
Check connections and cable
Follow pin assignment (see Instrument
Label / Operating Instructions)
Replace instrument; if failure reoccurs,
consult the manufacturer *)
Replace instrument
US
15