TIAGOR

HVAC

TABLE OF CONTENTS

1 GENERAL INFORMATION ........................................................................................................................ 1

1.1. SPECIFICATIONS ................................................................................................................................. 1

1.2. TIGHTENING TORQUES ...................................................................................................................... 3

1.3. PRECAUTIONS ................................................................................................................................... 11

1.4. HVAC SYSTEM LAYOUT & WORKING.............................................................................................. 13

1.5. COMPONENTS OF HVAC .................................................................................................................. 17

1.5.1. CONTROL PANEL.................................................................................................................... 17

1.5.2. HVAC UNIT ............................................................................................................................... 20

1.5.3. COMPRESSOR ........................................................................................................................ 23

1.5.4. CONDENSOR & RECEIVER DRIER........................................................................................ 24

1.5.5. THERMISTOR / THERMO SENSOR ....................................................................................... 25

1.5.6. TRINARY PRESSURE SWITCH/ SENSOR ............................................................................. 28

1.5.7. AIR INLET ACTUATOR ............................................................................................................ 29

1.6. TROUBLESHOOTING......................................................................................................................... 30

2 MAINTAINANCE....................................................................................................................................... 44

2.1. PRELIMINARY INSPECTION.............................................................................................................. 44

2.2. REGULAR MAINTENANCE ................................................................................................................ 46

3 ON VEHICLE REPAIR .............................................................................................................................. 51

3.1. CONTROL PANEL ASSEMBLY .......................................................................................................... 51

3.2. COMPRESSOR ................................................................................................................................... 56

3.3. BLOWER.............................................................................................................................................. 56

3.4. BLOWER RESISTER .......................................................................................................................... 57

3.5. FILTER................................................................................................................................................. 57

3.6. TXV ...................................................................................................................................................... 58

3.7. PRESSURE SENSOR / SWITCH........................................................................................................ 58

3.8. HVAC UNIT.......................................................................................................................................... 59

3.9. CONDENSOR SEALING DUCT .......................................................................................................... 60

3.10. CONDENSOR.................................................................................................................................... 60

3.11. REFRIGERANT HOSES.................................................................................................................... 62

3.12. DO's & DON’T's ................................................................................................................................. 64

4. OVERHAULING HVAC UNIT ................................................................................................................... 65