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7.1. Cleaning the rain quantity sensor
- Depending on the location, leaves, dirt, sand and branches blown by the wind
get collected in the collection funnel of the rain quantity sensor. Larger parts can
block the passage. Sand can also accumulate on the pointer; large deposits of
it can hamper the measurement result.
- Hence the rain quantity sensor is to be cleaned from time to time - at least once
a year. The pictures shown below are a guideline for installing / dismantling.
- For cleaning the sensor, just remove the sensor housing by slightly turning it to
the left.
- Further, the collection funnel can also be removed by turning it to the left.
- The rainfall sensor is now moved upward, folded towards the cable side and you
can now remove the pointer.
- Clean the collection funnel, contacts, counter and the drain-hole in the housing
and remove all residues.
- Place the counter back in its holder. The magnet of the counter should be on the
side that faces the cable.
Pointer inserted correctly
Housing locked in correctly at the bottom (col-
lection funnel removed for demonstration)
Drain hole
Lock for collection funnel
Rainfall sensor inserted correctly
35
Remove
Turn to the left,
remove casing
downward,
remove collection
funnel upward
Mount
Mount,
turn to the right
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