Sensor Maintenance - Pepperl+Fuchs NVD-111 Manual

Warning Device NVD-111
Troubleshooting
6.2
EN
36 - EN

Sensor Maintenance

Caution!
Malfunction or false alarm caused by a contaminated sensor
If the sensor is very dirty, this may trigger a false alarm or mean that no alarm is
triggered under certain circumstances.
Clean and dry the sensor when emptying/disposing of the oil/petrol
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separator or container.
Do not clean the sensor with corrosive liquids.
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Cleaning the Sensor
The sensor is maintenance free. To ensure the entire alarm system functions
correctly, clean the sensor at the following intervals:
1. Clean the sensor at least once a year.
2. Pay particular attention to cleaning the sensor tips of all oil, grease, and other
dirt residues using a grease-dissolving cleaning agent.
3. If the sensor is used in difficult conditions, clean the sensor more often.