Instructions

37
EN
15. Cleaning and care
The function of the DuoFern Sun/Wind Sensor can be affected by envi-
ronmental influences:
For example, dust or bird droppings on the top of the
housing can impair the solar cell and obscure the light sensor.
A dirty wind propeller will no longer turn smoothly
and may result in incorrect measurement results.
For the safe operation of the DuoFern Sun/Wind Sensor, it is important
that it remains as clean as possible and that the wind propeller can be
moved easily:
Clean the DuoFern Sun/Wind Sensor regularly with a mild soapy
solution.
Check the wind propeller regularly to ensure it moves easily.
Carry out a regular function test for the sun and wind function,
see page 23 / 25.
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