8
Installation and commissioning
R 24 V rain sensor
• Version: 03.03.2016 • Technical changes and errors excepted.
2.3.5. Mounting the sensor
Close the housing by putting the cover back over the bottom part. The cover must snap
in on the left and right with a definite “click”.
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.
Observe the correct connections. Incorrect connections may destroy the sensor or con-
nected electronic devices.
After mounting, remove all transport protection labels.
2.5. Setting the holding time
The holding time defines how long the rain signal is maintained after no precipitation
has been detected (switch delay).
The holding time is set using a potentiometer on the inside of the housing. Turning
anti-clockwise reduces the holding time (minimum value 10 seconds). Turning clock-
wise increases the holding time (maximum value 300 seconds).
Fig. 12
Make sure the cover and bottom part are
properly snapped together! This picture is
looking at the closed sensor from under-
neath.
Fastening
Fig. 13
Push the housing from above into the fas-
tened mount. The bumps on the mount must
snap into the rails in the housing.
