4.3
Silencing an alarm
When an alarm condition exists, various signals (horns and strobes), auxiliary relays, the city connection (which is the link to the local fire
department or central station monitoring service), and the tone-alert may activate. The ALARM SILENCE key turns OFF all devices that are
programmed to turn off when it is pressed.
Note:
Depending on the programming of the system, some devices may not turn off when the ALARM SILENCE key is pressed.
The following occurs when the key is pressed.
• Turns OFF any circuits programmed as "on until silence"
• Turns ON the ALARM SILENCED LED if circuits were active and are now silenced
• Displays a message indicating the ALARM SILENCE function is activated
You should be aware that the following functions affect the operation of the ALARM SILENCE function.
• If a
Coded Input Device
(typically a pull station) activates, the ALARM SILENCE key may be ignored until this function has completed
coding. Notification appliances (horns) cannot be silenced when a coded station is in alarm, but will silence upon coding completion.
• If the
Alarm Silence Inhibit Option
- which is a timer that inhibits the operation of the ALARM SILENCE function - is enabled,
pressing the ALARM SILENCE key is ignored until the timer expires. The message "ALARM SILENCE INHIBITED" displays for a short time
to indicate the action was not taken. The message "ALARM SILENCE NO LONGER INHIBITED" displays when the timer expires.
• If
Waterflow Sprinkler Devices
are activated, notification appliances may or may not be silenced (depending on local code
requirements). Usually, a dedicated bell will continue to sound to indicate water flow.
Some visual notification appliances may continue to flash until the system is reset.
4.3.1 Using the Alarm Silence Key
Press the ALARM SILENCE key and read the display. The display briefly shows the signal status, and the ALARM SILENCE LED turns ON
steady.
Figure 14: Alarm Silenced Information Box
4.4
Resetting the System
The function of the SYSTEM RESET key depends on whether active alarms are present at the time the key is pressed.
•
Active Alarms Present
. Pressing the SYSTEM RESET key when alarms are present attempts to return the system to its normal state.
This includes resetting initiating devices (pull stations and smoke detectors, for example), relays (including city relay and door holder
relays), notification appliances (horns and strobes), and all LEDs and indicators that have been programmed to be reset with the
SYSTEM RESET key. See "Resetting a System with Active Alarms" below for more information.
•
No Active Alarms Present
. Pressing the SYSTEM RESET key when no alarms are present causes the system to perform a hardware
reset. See "Performing a Hardware Reset" for more information.
page 12
579-685 Rev. D
InfoAlarm Operator’s Manual 4100U, 4100ES, 4010ES
