Trouble Shooting - WIKA LS-10 Manual De Instrucciones

8. Maintenance, accessories
Order-No.
71 93 131
24 59 686
20 74 257
15 24 399
12 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio LS/LH-10
The optional filter element for self-mounting avoids the
ingress of pollution and water into the venting tube for the
pressure compensation to the atmosphere.
The optional cable box with weather protection IP 67 with
venting element (NEMA 4) is suitable for mounting outside
of the shafts and tanks or directly in dry control boxes.
For mechanical assembly of the level probe a cable strai-
ning clamp is optionally available.
In order to increase the mass of the level probe an additi-
onal mass (approx. 500 g = 1.1 lb.) can be screwed on.
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9. Trouble shooting

9. Trouble shooting
„ Take precautions with regard to remaining media in removed pressure trans-
!
mitters. Remaining media in the pressure port may be hazardous or toxic!
„ Remove the pressure transmitter from service and mark it to prevent it from
Warning
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.
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/4-wire) has been chosen?
Failure
Signal span dropping off/too small
Signal span drops off
Signal span erratic or incorrect
Abnormal zero point signal
Zero point signal unstable/ too low/high Moisture present (e.g. at the cable tail)
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio LS/LH-10
Possible cause
Procedure
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.
Moisture present (e.g. at the cable tail) Install the cable correctly
Ensure permissible temperatures as per
Working temperature too high/too low
the Operating Instructions
Control the internal temperature of the
Medium or ambient temperature too instrument within the permissible range;
high/too low observe the allowable temperature error
(see Operating Instructions)
Diaphragm is damaged, e.g. through
impact, abrasive/agressive media;
Replace instrument
corrosion of diaphragm/pressure
connector.
Ensure permissible temperatures as per
Working temperature too high/too low
the Operating Instructions
Install the cable correctly,
filter element insertion
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