User manual

47
Maintenance and cleaning
Safe operation may no longer be possible if the device:
• shows signs of external damage,
• no longer functions,
• has been stored under unfavourable conditions or
• has been exposed to severe transport conditions.
If not used for any length of time (e.g. when in storage), remove
the batteries to avoid damages caused by leaking, etc.
10.2 Cleaning the rain sensor
Depending on the location, leaves, dirt particles transported by the wind,
sand, branches, etc., may get into the rain sensor’s (A) collecting funnel
(B). Larger items may block the flow of rainwater. Sand can also accu-
mulate in the counter rocker: as the amount increases, this causes the
measurement results to be less accurate. Consequently, the rain sensor
must be cleaned from time to time; this must be done at least once a
year, however.
• Loosen the collecting funnel of the rain sensor by slightly turning
it clockwise and lift it o.
• Loosen the cover of the rain sensor by slightly turning it clock-
wise and slide it down.
• Detach the rain sensor from above, move it to the side with the
cable and remove the counter rocker.
• Clean the collecting funnel, contacts, counter rocker and drain
hole in the bottom of the housing to remove any residues.
• Place the counter rocker back in its holder. In doing so, the coun-
ter rocker magnet must be at the side facing the cable.