PREVOST LE MIRAGE XLII BUS SHELLS User Manual

Section 22: HEATING AND AIR CONDITIONING
PA1553
3
11.1 CENTRAL HEATING SYSTEM.............................................................................................................44
11.1.1 Draining Heating System.......................................................................................................44
11.1.2 Filling Heating System...........................................................................................................47
11.1.3 Bleeding Heating System......................................................................................................47
11.1.4 Soldering ...............................................................................................................................47
11.1.5 Driver’s Hot Water Pneumatic valve Assembly.....................................................................47
11.1.6 Central Hot Water Pneumatic Valve Assembly.....................................................................49
11.1.7 Water Recirculating Pump.....................................................................................................50
11.2 SMALL HEATING SYSTEM.................................................................................................................53
11.2.1 Draining Heating System.......................................................................................................53
11.2.2 Filling Heating System...........................................................................................................53
11.2.3 Driver’s Hot Water Pneumatic Valve Assembly....................................................................53
11.2.4 Water Recirculating Pump.....................................................................................................53
12. SPECIFICATIONS ...........................................................................................................................57
ILLUSTRATIONS
FIGURE 1: DRIVER’S AIR CIRCULATION............................................................................................................5
FIGURE 2: CABIN AREA RECIRCULATION DAMPER ..................................................................................................................5
FIGURE 3: CENTRAL HVAC SYSTEM AIR CIRCULATION ...........................................................................................6
FIGURE 4: SMALL HVAC SYSTEM CONTROL MODULE...............................................................................................................6
FIGURE 5: CENTRAL HVAC SYSTEM CONTROL MODULE...........................................................................................................6
FIGURE 6: EVAPORATOR COMPARTMENT .........................................................................................................7
FIGURE 7: CONDENSER COMPARTMENT ...............................................................................................................................8
FIGURE 8: A/C JUNCTION BOX .............................................................................................................................................8
FIGURE 9: DRIVER'S HVAC UNIT COIL ACCESS PANEL .............................................................................................................8
FIGURE 10: EVAPORATOR COIL ACCESS PANEL.....................................................................................................................9
FIGURE 11: EVAPORATOR COIL CLEANING............................................................................................................................9
FIGURE 12: CONDENSER COIL CLEANING .........................................................................................................9
FIGURE 13: ACCESS TO DRIVER'S HVAC UNIT AIR FILTERS ...................................................................................10
FIGURE 14: DRIVER'S HVAC UNIT AIR FILTERS .....................................................................................................................10
FIGURE 15: CABIN HVAC UNIT AIR FILTERS......................................................................................................10
FIGURE 16: REFRIGERANT CIRCUIT (CENTRAL SYSTEM) ......................................................................................16
FIGURE 17: DOUBLE SWEEP EVACUATION SET-UP...............................................................................................................19
FIGURE 18: AIR PRESSURE REGULATOR ........................................................................................................21
FIGURE 19: BELT TENSIONER.....................................................................................................................22
FIGURE 20: COMPRESSOR ALIGNMENT .........................................................................................................22
FIGURE 21: COMPRESSOR ALIGNMENT .........................................................................................................22
FIGURE 22: EVAPORATOR COMPARTMENT .....................................................................................................24
FIGURE 23: EVAPORATOR MOTOR ASSY FIXING BOLTS.........................................................................................................24
FIGURE 24: EVAPORATOR MOTOR ASSEMBLY .................................................................................................24
FIGURE 25: PROPER GRINDING TECHNIQUE ....................................................................................................25
FIGURE 26: IMPROPER GRINDING TECHNIQUE..................................................................................................25
FIGURE 27: GRINDING WITH THE BRUSH SEATER STONE......................................................................................26
FIGURE 28: SEATING SURFACE OF THE BRUSH.................................................................................................26
FIGURE 29: EVAPORATOR MOTOR ...............................................................................................................27
FIGURE 30: CONDENSER FAN MOTOR ...........................................................................................................27
FIGURE 31: A/C CONDENSER COMPARTMENT..................................................................................................28
FIGURE 32: DRIVER'S LIQUID REFRIGERANT SOLENOID VALVE ...............................................................................29
FIGURE 33: REFRIGERANT SOLENOID VALVE ..................................................................................................30
FIGURE 34: EXPANSION VALVE ...................................................................................................................31
FIGURE 35: SUPERHEAT ADJUSTMENT INSTALLATION .........................................................................................31
FIGURE 36: HIGH & LOW SWING TEMPERATURE AT REMOTE BULB ..........................................................................31
FIGURE 37: SELTEC TM-16HD COMPRESSOR......................................................................................................................38
FIGURE 38: SMALL HVAC SYSTEM FRONT COMPONENTS.......................................................................................................39
FIGURE 39: COMPRESSOR REMOVAL OR INSTALLATION ......................................................................................39

PREVOST LE MIRAGE XLII BUS SHELLS Specifications

General

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