MCi Reliability Driven Series Operator's Manual page 58

AMEREX FIRE SUPPRESSION SYSTEM
The AMEREX fire suppression system is an
automatic system that continuously monitors the
engine compartment for fires. The system uses
thermo-sensors connected to an electronic circuit
monitor/control panel to electrically trigger the release
of the dry chemical (ABC) extinguisher.
Figure 71.
Control Panel
The control panel is responsible for driver alerts
and for the automatic activation of the system during
fire hazards. The control panel has both audible and
visual alarms.
Normal Operation
During normal operation, a green System OK LED
is illuminated on the front of the control panel. This
indicates that all circuits are intact and functioning.
Fire Hazard Conditions
In the event of fire, the green System OK LED will
go out and the red FIRE LED will come on. The system
will force chemical fire suppressant through four spray
nozzles located in the engine compartment.
The Relay Reset button on the Amerex control
panel is disabled (Figure 71.).
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In the event of a fire, the engine will shutdown 15
seconds after the fire system is activated. If more than
15 seconds are required to move the coach to a safe
parking area, the operator can push the ENGINE
OVERRULE switch, located on the second row of the
LH Switch Panel. Push the button at approximately 10-
12 second intervals to delay shutdown for another 15
seconds.
An audible buzzer will sound continuously during
fires. This alarm will operate until the Alarm Silence
button is pushed. When the Alarm Silence button has
been pushed, the LED will be illuminated.
As a safety provision, the silence feature
cannot be operated in advance of a fire or
fault condition.
When the fire is extinguished and the thermo-
sensor cools, the red FIRE LED will remain illuminated
until the system is serviced and the monitor is reset.
Fault Condition
If a fault occurs in the actuator circuit, the Service
System LED will be illuminated and will remain so until
the condition is repaired.
Manual Operation
The manual function is used when a fault exists
that could inhibit auto/electrical actuation via the
control panel. During a fire emergency, the driver must
manually pull the disarming pin that retains the actuator
switch and push the button (Figure 72.). The manual
fire button is located behind the drivers seat, on the LH
side.
Figure 72.
July 2015