dol sensors DOL 53 Technische gebruikershandleiding - Pagina 7
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6 Troubleshooting instructions
Error
Packaging is damaged.
No measured value at the con-
trol unit.
Incorrect measured value at the
control unit.
Unexpected measured value at
the control unit.
Unstable measured value.
Wet sensor.
7 Maintenance
The sensor element must be replaced after 3 years of operation at the latest. End of service life see date on the
sensor element rating plate.
Carry out the daily visual inspection to detect operation readiness.
Have specialists carry out the annual inspection and sensitivity check.
Replace the dust filter in front of the sensor element if clogged. A clogged filter prolongs the re-
sponse time of the sensor element. This affects the sensitivity. The dust filter must always be re-
placed prior to checking the sensitivity.
DOL 53 must be removed during cleaning and disinfection. After removing the connector, screw
on the screw plug. A missing screw plug leads to corrosion of the connector.
Cleaning
Clean DOL 53 surface with lukewarm water. Check for mechanical damage.
Disposal
Dispose of the product in accordance with the applicable rules and regulations.
DOL 53
Cause
Damage in transit.
Electrical connection faulty or in-
terrupted.
DOL 53 aligned incorrectly, not
vertical.
Sensor element faulty or used
up.
Sensing head faulty.
Loss of sensitivity.
Filter clogged.
Brief interference pulses <5 sec-
onds.
Dynamic signal fluctuations with
a period of more than 5 seconds
can arise from turbulence with
fresh air.
DOL 53 was cleaned with water. Wipe DOL 53 dry.
Condensation.
www.dol-sensors.com
Remedy
Contact the supplier in case the sensor is
damaged.
Check installation for cable break.
Install DOL 53 in accordance with mount-
ing instructions, vertical ±30°.
Replace sensor element.
Replace the sensor.
Check sensitivity with test gas.
Replace filter.
Interference caused by electrical equip-
ment, e.g. lighting, fans or heaters. Iden-
tify device and suppress interference.
No activity, continue to monitor.
Technical User Guide
7