Maintenance, Accessories; Trouble Shooting - WIKA D-20-9 Mode D'emploi

8. Maintenance, accessories / 9. Trouble shooting

8. Maintenance, accessories

 WIKA pressure transmitters require no maintenance.
Have repairs performed by the manufacturer only.

Accessories
For details about the accessories (e. g. connectors), please refer to WIKA's price list, WIKA's
product catalog on CD or or contact our sales department.

9. Trouble shooting

Open pressure connections only after the system is without pressure!
Warning
 Take precautions with regard to remaining media in removed pressure trans-
!
mitters. Remaining media in the pressure port may be hazardous or
toxic!
Warning
 Remove the pressure transmitter from service and mark it to prevent it from
being used again accidentally, if it becomes damaged or unsafe for opera-
tion.
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.
14 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
GB
10. Trouble shooting
Please verify in advance if pressure is being applied (valves/ ball valve etc. open) and if the
right voltage supply has been chosen?
Failure
No output signal
No/False output signal
Output signal unchanged after change
in pressure
Signal span too small
Signal span erratic
Hot instrument case surface
No output signal
Output signal unchanged after change
in pressure
Signal span dropping off/too small
Signal span too small
Signal span drops off
Signal span erratic
Signal span erratic
Abnormal zero point signal
In case of unjustified reclamation we charge the reclamation handling expenses.
*) Make sure that after the setting the unit is working properly. In case the error continues to exist send in the instrument for reparation (or
replace the unit).
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
Possible cause Procedure
No/incorrect voltage supply or current Adjust the voltage supply to correspond
spike with the Operating Instructions *)
Follow pin assignment (see Instrument
Incorrectly wired
Label / Operating Instructions)
Wrong supply voltage or current spike Replace instrument
Correct the power supply in line with
Power supply too high/too low
the Operating Instructions
Stabilise the power supply; smooth it
Strong fluctuations in the power supply
(i.e.; remove interferences)
Internal short-circuit in instrument Replace instrument
Cable break Check connections and cable
Mechanical overload through over- Replace instrument; if failure reoccurs,
pressure consult the manufacturer *)
Diaphragm is damaged, e.g. through
impact, abrasive/agressive media; Contact the manufacturer and replace
corrosion of diaphragm/pressure the instrument
connector; transmission fluid missing.
Mechanical overload through over- Replace instrument; if failure reoccurs,
pressure consult the manufacturer *)
Install the elektrical connection
Moisture present
correctly
Electromagnetic interference source in Shield the device; shield the cables;
the vicinity, e.g. inverter drive remove the interference source
Violent fluctuations in the process
Damping; consult with manufacturer
media pressure
Correct the zero point through control
Abnormal mounting position
panel or software
GB
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