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Operation
When more than one event exists, the first press of the Acknowledge
switch silences system piezo sounders. The second press of the
switch stops the scrolling 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 LCD-80F sends
an alarm 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 Silenced LED to turn on while the LCD-80F
will display a 'silenced' message. It also sends an 'Alarm Silenced'
message to the printer and the history file within the FACP. A
subsequent new alarm will resound the appropriate NACs (Notifica-
tion 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 LCD-80F will
transmit a drill command to the control panel. This command causes
the FACP to turn on all NAC outputs and all silenceable circuits (all
control modules/NACs that are programmed silenceable). In the
event that the system was previously silenced, the drill command
will also turn off the Alarm Silenced LED. The 'Manual Evacuate'
message is shown on the LCD-80F 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 LCD-80F
sends a Reset command to the control panel. This will turn off all
control modules and Notification Appliance Circuits, temporarily
turns off resettable power to 4-wire detectors, causes a 'System All
Normal' message to be displayed on the LCD-80F and sends a
'System Reset' message to the FACP display, printer and FACP
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.
Document 51338 Rev. B 08/24/05 P/N 51338:B
Switch Functions
17
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