User Manual

12
11. Maintenance and cleaning
a) General
Check the technical safety of the product regularly, e.g. damage to the housing.
It can be assumed that operation is no longer ensured without risk if
• the device shows visible damage
• the device is no longer functional
• after longer periods of storage under unfavourable conditions or
• after heavy transport stress
Before cleaning or servicing the device, observe the following safety instructions without
fail:
Remove the batteries before cleaning, servicing or carrying out repair work.
There are no parts in the interior requiring servicing; the device may not be opened.
Repairs may only be carried out by a specialist who is familiar with the associated
hazards and relevant regulations for the device.
b) Cleaning combination sensor
After a longer period of operation in the open air, dirt can gather on the plastic surface of the
outdoor sensors.
This can be removed very readily with a soft cloth which has been moistened with water.
Never spray the outdoor sensors with, for example, a garden hose as the outdoor
sensors are only protected against rain from above and not against water jets from
the side or from below.
The rain gauge should be monitored from time to time.
Depending on the location, leaves, particles of dirt carried by the wind, small twigs and similar
can enter the cone collector of the rain gauge. Large parts can clog the flow-through!
Sand can also collect in the count rocker which will affect the measuring result negatively as it
increases.
For this reason, the rain gauge should be cleaned at least once a year.
Proceed as follows:
• open the lower part of the rain gauge. To do this, turn the lower part approx. 1 cm to the left
until you can let the metal nips slide downwards.
• remove the upper cone collector by turning it first of all a small distance to the right; then lift
it off to the top.
• the rainfall sensor (the plastic part with the two brass pins and cable) can now be removed.
F