Operation
21
Siemens Building Technologies
007995_a_en_--.doc
Fire & Security Products
04.2004
5.6
Switching off system parts
In certain situations (e.g. renovation work) it may make sense to switch off parts of
a system. When a system part is switched off, the LED 'Part of system OFF' is al-
ways on.
WARNING!
System parts that have been switched off may possibly hamper the correct
recording or processing of alarms or faults! For this reason, always switch these
system parts on again as soon as normal operating conditions are prevailing
again!
5.6.1
Switching off detector zones
Overview
To avoid unintended alarm messages, in exceptional cases detector zones must
be disconnected from the system, i.e. switched off. In which cases a detector zone
shall be switched off depends on the detectors used and the deceptive phenomena
(e.g. smoke or dust).
WARNING!
Detector zones that have been switched off cannot trigger alarms or faults! For
this reason, always switch these detector zones on again as soon as normal
operating conditions are prevailing again!
NOTE!
Manual fire alarm call points may possibly trigger alarm even when the detector
zone is switched off (see section 'Configuration').
Procedure
To switch a detector zone off, proceed as follows:
1.
Enable the operating level 2 (password or key).
2.
Press the desired detector zone key.
The yellow zone LED lights up.
The zone is now switched off and you can perform the intended work on the
detector zone without an alarm or fault being remotely transmitted.
3.
To switch the zone on again, press the desired detector zone key twice.
The yellow zone LED no longer lights up.
The zone is switched on again.
