FRONT PANEL INDICATIONS - Continued
4.2System Fault Indicator
The system fault indicator will illuminate under any abnormal condition. Certain conditions may be diagnosed without looking inside the enclosure as follows:-
(1) System Fault on. Supply Healthy off | = Power failure or system fuse failure. | |
(2) System Fault on, Zone Fault on | = Zone O/C or S/C in indicated zone. | |
(3) System Fault on, Zone test on | = | Zone indicated in test mode. |
(4) System Fault on, Disabled Led on | = | Zone indicated in disabled/isolated mode. |
(5) System Fault on. Sounder Fault on | = Sounder Circuit O/C or S/C Fault. | |
4.3 Alarm Silenced Indicator
The alarm silenced indicator should only be accompanied by one or more steady fire indicators, and indicates that the sounders have been silenced.
Operation of subsequent fire zones or the evacuate switch will extinguish the alarm silenced indicator.
4.4Zone Fault Indicator
Illumination of a zone fault indicator may mean that one or more trigger devices are inoperative and requires immediate attention.
Zone fault indicators will illuminate in the event of:-
(1)Disconnection or severance of zone wiring
(2)Short Circuit on zone wiring
(3)Removal of a sensor from its base
(4)Disconnection of the end of line monitor resistor, or active end of line unit (LCMU)
4.5Fire Indicators
Upon detection of a fire the red zone fire alarm indicator will flash to give warning of the area (zone) in fire and the common fire indicator will be illuminated. This will be accompanied by a pulsing buzzer within the control panel and the operation of the sounders.
4.6Sounder Fault Indicator
The sounder fault indicator and the system fault indicator will be illuminated if a sounder circuit is open or short circuit.
4.7Zone Test Indicator
The zone test indicator will be illuminated if one or more zones are in zone test mode.
4.8Disabled Indicator
The disabled indicator will be illuminated if :-
(A) one or more zones are in the disabled mode. This is accompanied by the zone fault indicator.
(B) The Sounder disable or remote signal, disable switch is operated. This Indicator will be accompanied by the system fault indicator.
4.9Common Fire/ Evacuate Indicator
The common fire indicator will be illuminated if the panel is in an alarm condition or in an evacuate condition.
Sigma K1000 Series 1, 2, 4 & 6 Zone Fire Control Panels Operation and Maintenance Manual
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