PREVOST H3-41 Maintenance Manual page 998

SECTION 23A: ACCESSORIES - H3 SERIES
1. Pull out the wiring connector (black and red
wires) located on sun visor L.H. side and
disconnect.
2. Remove the two Phillips-head screws at the
bottom end of the sun visor arms.
3. Remove the two Phillips-head screws on
each roller side, pull out the sun visor.
4. Remove the Phillips-head screws retaining
the upper windshield panel.
5. If equipped with blower defroster, loosen
hose clamp to remove air duct from hose.
6. Disconnect wiring
windshield wiper motor.
7. Loosen the bolt retaining the lever at the end
of the motor driving shaft (Figure 41).
8. Remove the three bolts holding the motor to
the steel plate.
9. Remove the windshield wiper motor (Prevost
#800304), reverse removal procedure to
reinstall.
12. AUTOMATIC FIRE SUPPRESSION
SYSTEM (AFSS) (OPTIONAL)
This optional system is used to shut down the
engine and to extinguish a fire in the engine
compartment or in the vicinity of the preheating
system if so equipped.
The system operation is fully automatic and does
not require assistance from the operator,
however if required, the system can be manually
activated by the operator at any time.
Refer to Prevost Operator's Manual or Owner's
Manual for system operation and operational
sequence (fire).
If more information is needed on the system,
please refer to Kidde Dual Spectrum "Operation
& Maintenance Manual'', found on your Tech-
nical Publications USB flash drive.
CAUTION
The AFSS extinguisher will not function as
intended if oriented incorrectly. Refer to labels
on the extinguisher bottle or the "Operation &
Maintenance Manual''.
32
PA1621 Maintenance Manual All Series | Jan 2020
connector from the
12.1 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:
1. From the ON position;
2. Turn to OFF, return to ON and START
vehicle within 2 seconds.
FIGURE 42: IGNITION SWITCH SEQUENCE
12.2 PERIODIC MAINTENANCE
PRE-TRIP
o Verify that the Protection Panel "SYSTEM
OK" lamp is on solid green.
EVERY 3000 MILES OR MONTHLY (whichever
comes first)
General
o Verify that neither the protected equipment
nor the hazard has changed.
o Verify that no obvious physical damage or
condition exists that might prevent system
operation.
Protection Panel
o Verify that all warning lamps and the audible
alarm are operational by pressing the
"TEST/RESET" button.