
6 Maintenance
Attention:
Do not look into the invisible laser beam!
Attention:
Head and carrier heatings could be hazardous hot! Burn
Hazard! (applies only for 5.4110.x1.xxx)
6.1 Cleaning
Approximately every 3 months the glass panes of the sensor should preventively be cleaned.
Depending on the location this period might be different. Please use a commercially available cloth
which is used, for example, for cleaning spectacles.
If the Laser Precipitation Monitor outputs the error message 1 “static signal out of allowed range”
(see diagnostic command “DX”, CH.
7.2.5
) or frequently the output “Precipitation (not identified)”
appears, and the error remains still after the cleaning, the instrument has to be sent-in to the
manufacturer for inspection.
Insect nests, spider webs, pollen flight sediments or the like shall be removed regularly. Depending
on the environment and season the periods for control might be different.
6.2 Calibration
A calibration is necessary with the replacement of certain components. It is carried out in the
factory.
6.3 Checking the sensor
The simulation of precipitation can be generated as follows:
Move an object (or a finger) at least 15 times per minute as quick as possible through the invisible
laser beam between the sensor heads. Then, with the next minute-change, the sensor outputs the
precipitation type “Precipitation (not identified)” as well as a respective precipitation quantity. This
simulation can be started five minutes after the instrument has been switched on.
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