4-6 Controls and Instruments
PA-1652 Operator's Manual H3-45 Coach
AUTOMATIC FIRE DETECTION AND
SUPPRESSION SYSTEM (AFSS)
The vehicle is equipped with an Automatic Fire
detection and Suppression System (AFSS).
AUTOMATIC FIRE SUPPRESSION SYSTEM
PANEL
The panel displays the current system status.
The protection panel contains “SYSTEM OK”, fire
“ALARM” and “TROUBLE” lamps, the audio
alarm, the “TEST/RESET” switch, and the
“ALARM SILENCE” switch.
The “SYSTEM OK” lamp indicates power is on
the system and that there is no trouble conditions
present. The “TROUBLE” lamp blinks if there is a
fault in the detection circuitry and illuminates solid
if there is a fault in the extinguishing circuitry.
When the “TROUBLE” lamp is on, the “SYSTEM
OK” lamp will be off and the audible alarm will
sound intermittently. The “SYSTEM OK” lamp will
flash when the system is low on battery power.
Depressing the “TEST/RESET” switch tests the
protection panel lamps and audio alarm. The
“ALARM SILENCE” switch will disable the audio
alarm.
When a fire detector automatically detects a fire,
the fire “ALARM” lamp and audio alarm activate.
When the Manual Activation Switch is activated,
the fire “ALARM” lamp blinks and the audio alarm
activates. The lamp will blink until power is cycled
to the system.
FIGURE 9: AFSS PANEL & MANUAL ACTIVATION
SWITCH
Manual Activation Switch
The manual activation switch allows immediate
system activation (extinguisher discharge and
engine shutdown) by the driver at any time.
Activation of the switch is accomplished by
twisting and pulling the tamper seal to remove,
lifting the cover and pressing the red “FIRE”
button for more than half a second. After the
manual activation switch has been activated, the
protection panel will blink the fire “ALARM”
indicator until power has been cycled to the
system.
Refer to "AUTOMATIC FIRE SUPPRESSION
SYSTEM (AFSS)" on page5 in Section 7 Safety
Features and Equipment for more information.
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