Regularly check the mechanical safety of the unit (look
for damages to the housing or mains cable for
example).
Do not carry out any repairs, modifications or
maintenance work yourself. This is only to be
accomplished by an authorized specialist. The mains
cable may also only be changed by the manufacturer,
or an authorized specialist. Never remove the housing,
especially not while the equipment is plugged into the
socket, since some components are under electric
voltage. Any unauthorized or improper handling (e.g.
trying to repair the unit) of the equipment will
immediately nullify the guarantee/warranty, and any
other liabilities of the manufacturer.
