Limp-Home Belt; Lower Alternator Failure - PREVOST H3-45 2023 Operator's Manual

7-6 Safety Features and Equipment
NOTE
The Protection Panel continuously monitors
system integrity and displays the information
via the "SYSTEM OK" and fire "TROUBLE"
indicators.
NOTE
The Manual Activation Switch is used when
immediate discharge of the fire extinguisher
and engine shutdown is desired.
Operational Sequence (Fire)
1. A fire detector or linear 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
l
Activation Switch, all delays will terminate
and the engine shutdown and extinguisher
discharge will occur immediately.
If the operator presses and releases the
l
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.
presses the Manual
PA-1652 Operator's Manual H3-45 Coach
WARNING
The extinguisher discharge may cause an
obscuring cloud behind and near the vehicle.
5. The red fire "ALARM" lamp and audible alarm will
stay on. The yellow fire "TROUBLE" lamp will also
be on indicating a discharged extinguisher.
6. 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.

LIMP-HOME BELT

In case of mechanical failure of the lower
alternator, install the limp-home belt on the upper
alternator. The installation of the belt allows the
coach to be driven to a repair facility after only
minor manipulations.
NOTE
Because of the alternators arrangement and
the belt tensioner, a limp- home belt on the
lower alternator is not possible.

LOWER ALTERNATOR FAILURE

1. Raise the belt tensioner. Use a breaker bar with a ¾
inch drive to rotate the tensioner pulley upward and
relieve alternator belt tension. Remove belt;
2. Install the limp-home drive belt on the drive and top
alternator pulleys first;
3. Complete installation of the limp- home belt as
shown;
4. Slide the belt on the idler pulley;
5. Gently release the belt tensioner;
NOTE
To prevent the batteries from being discharged,
the HVAC system will turn OFF automatically if
the battery state of charge falls below 50%.