14033590.01 10/2014 GB/D
WIKA operating instructions model CS4S
41
GB
10. Maintenance and cleaning
10.1 Maintenance
This temperature controller is maintenance-free.
Repairs must only be carried out by the manufacturer.
This does not apply to the battery replacement.
10.2 Cleaning
CAUTION!
■
Only clean the instrument with a soft, moist cloth. The use of solvents can
lead to deformations or discolourations/tarnishing.
■
Electrical connections must not come into contact with moisture.
■
Clean the dismounted instrument before returning it, in order to protect
persons and the environment from exposure to residual media.
For information on returning the instrument see chapter 12.1 “Return”.
11. Faults
If malfunctions occur, please first check the power supply and wiring and then
follow the following points.
WARNING!
Turn off the power to the controller before working on the terminals or checking
the connections. Touching the connection terminals with the power switched
on may cause an electric shock, which can result in serious injury or death.
To switch off the power supply of the controller, a suitable isolation device in
the form of a switch must exist in the building. This switch must be arranged
properly, easily accessible for the user and marked as the isolation device for
this instrument.
10. Maintenance and cleaning / 11. Faults