PREVOST H 2018 Series, Operator'S Manual

Page: 173 / 258

SAFETY FEATURES AND EQUIPMENT 7-7
PA1628 H3-41, H3-45 Operator’s Manual
NOTE
The Manual Activation Switch is used when
immediate discharge of the fire extinguisher
and engine shutdown is desired.
NOTE
The Protection Panel continuously monitors
system integrity and displays the information
via the “SYSTEM OK” and fire “TROUBLE”
indicators.
Operational Sequence (Fire)
1. A fire detector or liner thermal detector
detects a fire in the engine compartment
and sends a signal to the
Protection Panel
in the driver’s area.
2. The fire “ALARM” lamp on the Protection
Panel will illuminate solid red and an audible
alarm will sound.
3. The operator shall bring the vehicle to a safe
stop.
4. The system automatically shuts down the
vehicle engine and discharges the
extinguisher into the engine compartment
15 seconds after the fire alarm starts unless
advanced or delayed by the operator.

If the operator presses the Manual Activation
Switch , all delays will terminate and the
engine shutdown and extinguisher discharge
will occur immediately.

If the operator presses and releases the
Delay Engine Stop switch once, the engine
shutdown and extinguisher discharge will be
delayed by an additional 15 seconds.
WARNING
The engine will stop 15 seconds after the
fire alarm starts. The operator must be
prepared to bring the vehicle to a safe stop
as soon as the alarm sounds. Steering may
become difficult after engine shutdown. If
more time is required, the “DELAY ENGINE
STOP” switch may be pressed and released
for an additional 15 second delay.
WARNING
The extinguisher discharge may cause an
obscuring cloud behind and near the
vehicle.
1. The red fire “ALARM” lamp and audible alarm
will stay on. The yellow fire “TROUBLE” lamp
will also be on indicating a discharged
extinguisher.
2. The system must be reset and the fire
extinguisher removed and replaced in
accordance with the System Reset portion
of the Kidde Dual Spectrum Operation &
Maintenance Manual.
Starting the Vehicle after Triggering Of a Fire
Alarm
The vehicle may be started after a fire alarm
without resetting the system. Refer to ignition
switch sequence below. This will not reset the
system, rather it will instruct the vehicle’s
multiplex system to ignore vehicle interface
outputs from the protection panel. This feature
is intended to be used only in emergency
situations that require the vehicle to be
restarted and moved a short distance prior to
system reset. It should not be performed if the
cause of the fire has not been clearly identified
and corrected.
To start the vehicle, perform this ignition switch
(key) sequence within 2 seconds:
1. From the on position, turn to OFF
2. Return to ON and START.