MS-4424 Instruction Manual - Fire-Lite Alarms
MS-4424 Instruction Manual - Fire-Lite Alarms
MS-4424 Instruction Manual - Fire-Lite Alarms
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3. System Operation Control Switches<br />
Control Switches<br />
TONE<br />
SILENCE<br />
ALARM<br />
SILENCE<br />
ALARM<br />
ACTIVATE<br />
SYSTEM<br />
RESET<br />
<strong>MS</strong>44-panel2.cdr<br />
Zone Status LEDs<br />
Figure 22 Control Panel Switches<br />
Tone Silence - Pressing this switch acknowledges alarms, troubles and supervisories. The panel has<br />
alarm and trouble resound with LED flash of new conditions. The flashing trouble LED(s) illuminate<br />
steadily and the piezo turns off. A second trouble will resound the piezo. Trouble conditions are selfrestoring.<br />
<strong>Alarms</strong> latch and require pressing SYSTEM RESET to clear. Unless the unit is set for nonlatching<br />
supervisory service, supervisories latch and require pressing SYSTEM RESET to clear. The piezo<br />
has three tones for different conditions (see "Piezo" on page 35).<br />
Alarm Silence - Pressing this switch acknowledges for alarms and supervisories. This switch will<br />
silence the local piezo, change any flashing alarm LEDs to steady, and turn off the notification circuits.<br />
The “Alarm Silenced” LED will illuminate. Alarm silence is a latching function and requires pressing<br />
SYSTEM RESET to clear.<br />
Note: If Silence Inhibit has been selected (SW1, DIP switch #4 set to “ON”), the Alarm Silence will not function until 60<br />
seconds after the initiation of the alarm.<br />
Alarm Activate - This switch may be used to activate Notification Appliance Circuits (NACs). It also<br />
activates the System Alarm Relay. This is a latching function. Pressing ALARM SILENCE silences the<br />
NACs and System Alarm Relay, and lights the Alarm Silenced LED. Pressing SYSTEM RESET returns<br />
the system to normal.<br />
System Reset - This switch breaks power to all initiating circuits, four-wire smoke detector power and<br />
optional boards and will clear any activated output circuits. If any alarm or trouble still exists after reset,<br />
they will reactivate the panel. Holding SYSTEM RESET down will perform a LAMP TEST function and<br />
will activate the piezo sounder.<br />
The alarm and/or trouble LED(s) will flash until the event(s) has been acknowledged (TONE or ALARM<br />
SILENCE), at which point the LED(s) will illuminate steadily.<br />
Alarm LED<br />
ZONE 1<br />
Trouble LED<br />
ZONE 2<br />
ZONE 3<br />
ZONE 4<br />
<strong>MS</strong>44-panel3.cdr<br />
Figure 23 Zone Status LEDs<br />
34 <strong>MS</strong>-<strong>4424</strong> <strong>Instruction</strong> <strong>Manual</strong> PN 15153:G1 10/22/02
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