Notes on the instruction manual
21
The device is maintenance-free. In case of damage, (e.g. during transport or storage), do not
perform repairs. Once the device is opened, the warranty is void.
Access to the device must be guaranteed for operation, testing, inspection, maintenance and
repairs (according to DIN VDE 0100-520).
Clean dirty devices with a soft dry cloth.
– If this is insufficient, the cloth can be moistened slightly with a soap solution.
