The ON/OFF button does not isolate the device from the mains volt-
age completely. To do this, you have to remove the plug from the
In the case of system units that do not have a main switch, the
ON/OFF button does not disconnect the monitor socket from the
mains supply. A monitor connected to this socket must always be
switched off using its own ON/OFF button.
Lay cables in such a way that there is no danger of people tripping
over them and damaging them. When connecting the device, note the
information given in the section "Connecting the cables" on page 29.
Do not connect or disconnect communication cables during a thun-
Make sure that no liquids penetrate the interior of the device (risk of
electric shock, short-circuit).
In cases of emergency (e.g. damage to the housing, controls or
power cable, or penetration of liquid) turn the device off immediately,
remove the mains plug and notify your sales office or our Service
This device may only be repaired by authorized personnel. Unautho-
rized opening of the housing and inadequate repairs may pose a con-
siderable danger for users (electric shock, risk of ignition).