Operation Switch Functions for ADT-LCD40 Only
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Document 50520 Rev D 7/25/00 P/N 50520:D
LEDs to steady on. The second press of the switch stops the scroll-
ing and holds the event on the display for one minute. Subsequent
pressing of the switch 'steps' through each active event.
2.2.3 Silence
When the Silence switch is pressed and released, the ADT-LCD40
sends a signal silence command to the control panel. The Silence
switch performs the same functions as the Acknowledge switch. In
addition, if an alarm exists, it turns off all silenceable NACs and
causes the FACP Alarm Silence LED to turn on while the
ADT-LCD40 will display a 'silenced' message. It also sends an
'Alarm Silenced' message to the printer and the history file within the
Unimode 200. A subsequent new alarm will resound the appropriate
NACs (Notification Appliance Circuits) and local sounders.
2.2.4 Drill: Hold 2 Sec.
When the Drill switch is pressed and held for at least two seconds
(time required to prevent accidental activations), the ADT-LCD40
will transmit a drill command to the control panel. This command
causes the FACP to turn on both main panel NAC outputs and all
silenceable circuits (all C304 modules/NACs that are programmed
silenceable). In the event that the system was previously silenced,
the drill command will also turn off the Alarm Silence LED. The
'Manual Evacuate' message is shown on the ADT-LCD40 display.
The same message is sent to the FACP display, printer and history
files. The Silence switch operates on silenceable NAC outputs only.
2.2.5 Reset
When the System Reset switch is pressed and released, the
ADT-LCD40 sends a Reset command to the control panel. This will
turn off all C304 modules and Notification Appliance Circuits, tem-
porarily turns off resettable power to 4-wire detectors, causes a 'Sys-
tem All Normal' message to be displayed on the ADT-LCD40 and
sends a 'System Reset' message to the FACP display, printer and Uni-
mode 200 history files. It also turns on all system LEDs, piezo
sounders and LCD display segments as long as the Reset switch is
held (lamp test). Any alarm or trouble that exists after a Reset will
resound the system.