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Only qualified experts familiar with the hazards involved
and the relevant regulations must perform repairs.
The product requires no servicing apart from replacing the
rechargeable battery. Servicing or repair must only be car-
ried out by a specialist or specialist workshop. Therefore,
never open it (except for the procedures described in these
operating instructions for insertion/replacing the batteries).
A dry, soft and clean cloth is sufficient for cleaning.
Do not put too much pressure on the display; this can cause
scratch marks, failures of the display or even destroy the
display.
Dust can easily be removed with a long-hair, soft and clean
brush and a vacuum cleaner.
Never use any aggressive cleaning agents, cleaning alcohol
or other chemical solutions, since these may damage the
casing (discolouration) or even impair function.
