Operating Instructions

SECTION 4

Panel Control Buttons

Operating Instructions

4.1Panel Control Buttons

4.1.1Acknowledge/Step

The first press of the Acknowledge/Step key silences the piezo sounder, changes flashing LEDs to steady and also changes the status field on the LCD display from capital letters to small letters. When the piezo is silenced, an acknowledge message is sent to the printer and the history file. Multiple active events are scrolled on the display at a three second rate. Acknowledge also sends a silence piezo command to the optional annunciators connected to the FACP.

When more than one event exists, the first press of the Acknowledge/Step key functions as described in the preceding paragraph. The second press of the key stops the scrolling and holds the event on the display for one minute. Subsequent pressing of the key steps through each active event.

4.1.2 Alarm Silence

The Alarm Silence key performs the same functions as Acknowledge/Step. In addition, if an alarm exists, it turns off all silenceable NACs (Notification Appliance Circuits) and causes the Alarm Silenced LED to turn on. It also sends an ‘alarm silenced’ message to the printer, history file and optional annunciators. A subsequent new alarm will resound the system NACs. Note that the Alarm Silenced LED is turned off by pressing the Reset key, the Drill key or subsequent activation of the NACs.

4.1.3 Drill/Hold 2 Sec

When the Drill key is held for a minimum of two seconds (time required to prevent accidental activations), the FACP turns on both main panel NAC outputs and all silenceable circuits such as control modules that are programmed as silenceable, and turns off the Alarm Silenced LED if it was previously on. The EVAC IN SYSTEM message is shown on the LCD display. The same message is sent to the printer and history file. The Alarm Silence key can be used to turn off all silenceable NAC outputs following activation by the Drill key.

4.1.4 Reset

Pressing and releasing the Reset key turns off all control modules and NACs, temporarily turns off resettable power to 4-wire detectors, causes a RESET IN SYSTEM message to be displayed on the LCD and sends the same message to the printer and history file. It also performs a lamp test by turning on all LEDs (except the Ground LED), piezo sounder and LCD display segments after the Reset key is released. Any alarm or trouble that exists after a reset will resound the system.

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MS-9200UDLS PN 52750:A 11/04/05