17
31076041.02 09/2015 EN/DE/FR/ES
EN
WIKA operating instructions optoelectronic level switches, models OLS-C
6. Faults
Faults
Causes
Measures
No function
Failure in power
supply
Measure voltage, check
cable or plug connection
Despite a change in
level, no alteration in the
display and no switching
of the output
Glass tip dirty
Clean the glass tip
(introduce service
intervals)
Glass tip too close to
an opposite surface
Increase the distance,
change the mounting
location
Glass tip defective
Exchange the glass tip
(model OLS-C29) or
return to the manufacturer
Instrument responds
inversely
Wrong switching
function (normally
open, normally closed)
Replace instrument
Relay connections
inverted
(model OLS-C29)
Change relay
connections over
Instrument obviously does
not respond or responds
too slowly on a level
change (model OLS-C29)
Switching delay
Wait for delay time
CAUTION!
Physical injuries and damage to property and the
environment
If faults cannot be eliminated by means of the listed
measures, the instrument must be taken out of operation
immediately.
▶
Ensure that pressure is no longer present and protect
against accidental commissioning.
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions
given in chapter 8.2 “Return”.
