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HVAC
CONTENTS
1
HVAC SYSTEM LAYOUT...........................................................................................1
2
TECHNICAL SPECIFICATIONS.................................................................................2
3
TIGHTENING TORQUES............................................................................................6
4
PRECAUTIONS ..........................................................................................................9
5
HVAC SYSTEM LAYOUT AND WORKING .............................................................10
6
CONTROL PANEL....................................................................................................12
7
HVAC UNIT COMPONENTS ....................................................................................14
A
BLOWER MOTOR ...................................................................................................... 14
B
EVAPORATOR COIL AND TXV (THERMAL EXPANSION VALVE)............................ 14
C
HEATER COIL ............................................................................................................ 14
8
COMPRESSOR ........................................................................................................15
9
CONDENSOR ...........................................................................................................17
10 RECEIVER DRIER (R.D) ..........................................................................................17
11 ON VEHICLE INSPECTION (WITHOUT DISMANTLING HVAC UNIT) ...................17
12 TRINARY PRESSURE SENSOR..............................................................................18
13 MODE & TEMPRATURE CONTROL ACTUATOR ..................................................19
14 INSPECTION OF MODE AND TEMPERATURE ACTUATOR.................................20
15 TROUBLESHOOTING..............................................................................................22
16 MAINTAINANCE.......................................................................................................32
A
PRELIMINARY INSPECTION ..................................................................................... 32
B
REGULAR MAINTENANCE ........................................................................................ 34