ALTROZ SERVICE MANUAL

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