Kessel 917824, Installation, Operation And Maintenance Instructions, Page: 58 / 196

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8. Switch unit
8.1 Menu guidance
The control unit's menu navigation is subdivided into the sy-
stem information as well as three different main menu items.
The background lighting is activated if one of the control keys
is pressed once.
OK key Skip to the next higher level
ESC key : Skip to the next lower level
▲
Navigation within a level
▼
The acoustic signal can be acknowledged by
pressing this key once..
If the fault has been eliminated, the visual fault
can also be acknowledged by pressing the alarm
key once more.
If the fault has not been eliminated, the acoustic alarm is trig-
gered again when the alarm key is pressed again.
In case of a mains power failure, the system is not ready for
operation. The control unit switches to stand-by mode (battery
operation). This becomes noticeable by means of an acoustic
and visual alarm. The acoustic alarm can be acknowledged by
pressing the alarm key. Stand-by mode is maintained for at
least 72 hours. Afterwards, the control unit switches off auto-
matically. If the mains connection is re-established within one
hour, the program will automatically continue with the last pro-
gram phase. If this is not the case, the device re-initialises itself
when the mains connection returns (programming already car-
ried out remains). If the alarm key is kept pressed in battery
operation, the control unit shuts down.
Note:
Certain menus are password-protected. This serves to protect
the system against inappropriate use.
If you have any questions, please contact KESSEL Customer
Services (Phone +49 (0) 8456 / 27462)
Alarm key
8.2 System menu
Systeminfo Information
Servicing
Settings