Engine Protection System; Automatic Engine Shutdown; Idle Shutdown Timer - PREVOST H3-45 2023 Operator's Manual

6-6 Starting and Stopping Procedures
5. Connect one end of the black jumper cable to the
negative (-) post on the donor vehicle battery (or
booster power source);
6. Connect the other end of the black jumper cable to
the negative (-) terminal on the booster block;
7. Start the engine of the donor vehicle and increase
the engine rpm speed slightly and maintain at that
level for approximately 5 minutes to recharge dead
batteries and then, shut the engine off;
8. Start the vehicle with the dead battery;
9. Disconnect the jumper cables in reverse order
given in steps 2 through 5;
10. Install protective cap on the booster block terminal.
NOTE
Jumper cables must be rated at 500 cranking
amperes. If jumper cable length is 20 feet (6 m)
or less, use 2/0 (AWG) gauge wires. If cable
length is between 20 and 30 feet (6 to 9 m), use
3/0 (AWG) gauge wires.

ENGINE PROTECTION SYSTEM

The engine protection will automatically derate or
stop the engine when certain engine conditions
reach a critical stage.
In the event of a serious fault, the red STOP
telltale light comes on and an audible alarm will
sound if the engine is running.
An illuminated STOP telltale light indicates a
serious problem has been detected, and the
driver must respond immediately to the problem.
The vehicle must be safely pulled off the road and
stopped. In some instances, the engine must be
switched off immediately.

AUTOMATIC ENGINE SHUTDOWN

Prior to an actual automatic shutdown, the engine
will automatically derate, go to idle, and then stop
as the vehicle speed gets below 2 mph (3 km/h).
The
automatically derate and stop the engine when
one or more of the conditions listed below
reaches a critical point:
After the automatic engine shutdown sequence,
the engine may be restarted. To do so, turn the
ignition switch to the OFF position for 7 seconds
and then turn it back to ON. However, it will only
operate for 30 seconds unless the problem is
resolved.
Use this function sparingly and in order to move
the vehicle to a safe parking place only.
Excessive use may result in severe engine
damage.
Failure to take necessary action when the
STOP telltale light is on can ultimately result in
automatic engine derate and shutdown.

IDLE SHUTDOWN TIMER

The
programmed to shut down the engine after a
specific engine idling time. The idling time cannot
be changed by the driver but can be changed with
the use of a laptop computer and Premium Tech
Tool. In this case, the engine idling time can be
set from 30 seconds up to 1 hour.
PA-1652 Operator's Manual H3-45 Coach
engine shutdown
High engine coolant temperature
l
High engine oil temperature
l
Low engine oil pressure
l
High crankcase pressure
l
WARNING
idle shutdown timer
protection will
(optional) is