PREVOST LE MIRAGE XLII BUS SHELLS User Manual

Section 06: ELECTRICAL
PA1553
26
In the engine compartment, the sequence is
as follows:
o A/C compressor clutch activates 3 times.
o Left compressor unloader activates 3 times.
o Right compressor unloader activates 3 times.
[5 seconds delay]
o Radiator fan clutch is disengaged (fan can
be turned freely by hand). [3 seconds delay]
o Fan clutch engages in speed 1 (fan can be
turned by hand but with a certain resistance).
[3 seconds delay]
o Fan clutch engages in speed 2 (cannot be
turned but hand). [10 seconds delay]
5 beeps from the back-up alarm indicate to
go to the evaporator compartment.
In the evaporator compartment:
o Evaporator fan motor runs at speed 1 for 3
seconds then runs at speed 2 for 2 seconds.
o Hot water pump starts running for 5 seconds
and hot water pneumatic valve cycles 3
times. [20 seconds delay]
5 beeps from the back-up alarm indicate to
go to the reclining bumper compartment
behind the reclining bumper.
Inside the reclining bumper compartment:
o Driver's unit refrigerant solenoid valve
activates 3 times.
o Driver's unit hot water pneumatic valve
cycles 3 times.
o Closing of the fresh air dampers.
This ends the test. Activate the dashboard
Telltale Light Test switch one time to leave
the motor test mode.
4.5.2 Test Sequence – MTH Equipped With
Small HVAC System
o Driver’s unit fresh air damper opening.
[20 seconds delay]
Then 5 beeps can be heard from the back-up
alarm to indicate to go to the engine
compartment.
In the engine compartment, the sequence is
as follows:
o A/C compressor clutch activated 3 times.
[5 seconds delay]
o Radiator fan clutch is disengaged (fan can
be turned freely by hand). [3 seconds delay]
o Fan clutch engages in speed 1 (fan can be
turned by hand but with a certain resistance).
[3 seconds delay]
o Fan clutch engages in speed 2 (cannot be
turned but hand). [10 seconds delay]
5 beeps from the back-up alarm indicate to
go to the reclining bumper compartment
behind the reclining bumper.
Inside the reclining bumper compartment:
o Hot water pump starts running for 5 seconds.
o Driver’s unit refrigerant solenoid valve
activates 3 times.
o Driver’s unit hot water pneumatic valve
cycles 3 times.
o Closing of the fresh air dampers.
This ends the test. Activate the dashboard
Telltale Light Test switch one time to leave
the motor test mode.

PREVOST LE MIRAGE XLII BUS SHELLS Specifications

General

Brand	PREVOST
Model	LE MIRAGE XLII BUS SHELLS
Category	Buses
Language	English