N 93-585-83 Issue 2 AB Page 10 of 25 © Protec Fire Detection PLC 2015
6.0 3500 Fire Indications
The 3500 displays fire information by illuminating the General Fire indicator and the relevant red zone
indicators. The following sections detail the meaning of each indicator.
6.1 General Fire Indicator Illuminated
The 3500 has detected a fire on one of its zones.
The building fire plan should be executed immediately
6.2 Zone Fire Indicator Illuminated
The 3500 has detected a fire in the indicated zone. The General Fire indicator will always
accompany this and the internal buzzer will be fast pulsing.
7.0 3500 Fault Indications
When the 3500 has detected a fault in any of the critical operating paths of the system it will display this on
the front panel display. The internal buzzer will also pulse slowly.
The General Fault indicator will be illuminated and is always accompanied by other indicator(s) detailing the
exact fault.
By pressing the Mute Buzzer button in access level 2 the fault is accepted and the internal buzzer will be
muted. Further faults reactivate the buzzer.
In the event of any fault the following action should be taken:
Investigate the fault, then, at access level 2, accept the fault by pressing the Mute Buzzer button.
Note the fault down in the Logbook and take action to remedy the fault.
In all cases expert advice must be sought
When the fault has been rectified the fault indicator will automatically extinguish.
The following sections give descriptions of each fault.
7.1 Zone Faults
The 3500 displays any faults in the detection zones on the zone indicators. The ‘General Fault’
indicator will be illuminated accompanied by the relevant zone fault indicator flashing. Pressing Mute
Buzzer will mute the buzzer.
7.2 System Faults
The 3500 performs regular self tests to ensure the software is working correctly. If a fault is detected
in software operation the ‘System Fault’ indicator will illuminate. This is a latching fault and can only
be cleared by using the ‘Clear System Faults’ option.
7.3 Alarm Fault
The 3500 performs checks on the alarm outputs and if a fault has been detected on one or more of
the alarm outputs the ‘General Fault’ indicator will be illuminated accompanied by the ‘Alarm Fault’
indicator. Devices connected to the alarm outputs may no longer operate correctly.
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