WIKA A-10 Manual De Instrucciones página 8

7. Starting, operation / 8. Maintenance, accessories / 9. Trouble shooting
Functional test
The output signal must be proportional to the pressure. If not, this might point to a
damage of the diaphragm. In that case refer to chapter 9 „Troubleshooting".
 Open pressure connections only after the system is without pressure!
 Observe the ambient and working conditions outlined in section 7
„Technical data.
Warning
 Please make sure that the pressure transmitter is only used within the over-
load threshold limit at all times!
When touching the pressure transmitter, keep in mind that the surfaces of
the instrument components might get hot during operation.
Caution
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.
. 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
GB
9. Trouble shooting
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
Abnormal zero point signal
Abnormal zero point signal
Output signal unchanged after change
in pressure
Signal span too small
Signal span erratic
Signal span erratic / incorrect
Signal span dropping off/too small
In case of unjustified reclamation we charge the reclamation handling expenses.
If the problem persists, contact our sales department.
Process material certificate (Contamination declaration for returned goods)
Purge / clean dismounted instruments before returning them in order to protect our employees
and the environment from any hazard caused by adherent remaining media.
Service of instruments can only take place safely when a Product Return Form has been
submitted and fully filled-in. This Return Form contains information on all materials with which
the instrument has come into contact, either through installation, test purposes, or cleaning.
You can find the Product Return Form on our internet site (www.wika.de / www.wika.com).
A-10 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio
Possible cause Procedure
Cable break Check connections and cable
Ensure permissible overload limits are
Overload limits exceeded
observed (see Operating Instructions)
Ensure permissible temperatures as per
Working temperature too high/too low
the Operating Instructions
Mechanical overload through over- Replace instrument; if failure reoccurs,
pressure consult the manufacturer
Mechanical overload through over- Replace instrument; if failure reoccurs,
pressure consult the manufacturer
Electromagnetic interference source in Shield the device; shield the cables;
the vicinity, e.g. inverter drive remove the interference source.
Ensure permissible temperatures as per
Working temperature too high/too low
the Operating Instructions
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.
GB
15
A-10