8
Maintenance
KNX L brightness sensor
• Date of issue: 05.11.2010 • Technical changes reserved. Errors reserved.
To remove it, the sensor can be simply pulled upwards out of the mount, against the
resistance of the fastening.
2.4. Notes on mounting and commissioning
Do not open the device if water (rain) might ingress: even some drops might damage
the electronic system.
After the bus voltage has been applied, the device will enter an initialisation phase las-
ting 5 seconds. During this phase no information can be received via the bus.
3. Maintenance
The sensor must regularly be checked for dirt twice a year and cleaned if necessary. In
case of severe dirt, the sensor may not work properly anymore.
As a precaution, the device should always be separated from
bus current for maintenance works.
Fig. 9
Make sure the cover and bottom part are pro-
perly snapped together! This picture is loo-
king at the closed sensor from underneath.
Fastening
Fig. 10
Push the housing from above into the faste-
ned mount. The bumps on the mount must
snap into the rails in the housing.
