6.8 Switching on system centre
The system centre is switched on by applying the mains voltage to the N, L and PE terminals and to PE on the
M4 screw, for details see chapter Terminal assignment of the 230 V AC power supply.
A short beep sounds approx. 2 minutes after switching on and the display of the main menu to check
the function of the internal audible alarm transmitter. The buttons can possibly be greyed out during the
start phase as a check of the data integrity is performed in the system centre under certain
circumstances.
Note: Operation of the buttons is locked out during this check as the end of the reorganisation is
waited for.
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