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1X-F Series Operation Manual
Stopping or restarting sounders (or evacuation for NBN S 21-100)
To stop the sounders (or evacuation for NBN S 21-100), press the Sounder
Start/Stop button (or Evacuation Start/Stop button for NBN S 21-100). To restart
stopped sounders (or evacuation for NBN S 21-100), press the button again.
A steady Sounder Start/Stop LED indicates that the sounders are active
(sounding).
Silencing sounders before activation (sounders silence disable time)
A flashing Sounder Start/Stop LED indicates that a configured sounder delay is
counting down and that sounders can be silenced (before activation) by pressing
the Sounder Start/Stop button. (Not available for NBN S 21-100.)
To prevent the immediate silencing of sounders when an alarm is first reported,
the Sounders Start/Stop button may be temporarily disabled for a preconfigured
period of time (1 minute default) when a configured sounder delay is counting
down.
The disable time starts to count down when the control panel enters alarm status
and the configured sounder delay starts.
During the configured disable time the Sounders Start/Stop LED is off, and the
sounders cannot be silenced (before activation) by pressing the Sounders
Start/Stop button.
During the time between the end of the configured disable time and the end of
the configured sounder delay (when the Sounders Start/Stop LED is flashing),
pressing the Sounders Start/Stop button silences sounders (before activation).
A configured sounder delay may still be cancelled while the delay is running (and
sounders activated) by pressing the Sounders Delay button.
Starting sounders in evacuation mode
If the control panel has been configured in EN 54-2 evacuation mode, sounders
can be started without a fire alarm by pressing the Sounders Start/Stop button.
If the control panel has been configured in NBN S 21-100, evacuation sounders
can be started without a fire alarm by pressing the Evacuation Start/Stop button.
Sounder functionality is subject to previous configuration and, depending on what
your installation or maintenance contractor has selected, silenced sounders may
restart automatically if another alarm event is detected. Contact your installation
or maintenance contractor to confirm all configuration details for your site.
Note:
Sounders are always restarted when the control panel detects a manual
alarm and it was in automatic alarm state.
