ALTROZ SERVICE MANUAL

HVAC 16 9. CONDENSER The condenser is a heat exchanger used to cool the hot vapourised refrigerant. Also the refrigerant changes its state from vapour to liquid. The conden- ser in this vehicle, as in many other vehicles is placed in front of the radiator. A condenser fan is provided to force the air in to the condenser to cool the refrigerant inside the core. 10. RECEIVER DRIER (R.D) It’s a storage device for liquid refrigerant and has three main functions. i) It absorbs the moisture in the refrigerant. ii) It allows only liquid ( high pressure liquid) to pass through to the TXV. iii) It keeps a reserve of refrigerant to accommodate fluctuating refrigerant requirements. 11. ON VEHICLE INSPECTION (WITHOUT DIS- MANTLING HVAC UNIT) Since the thermistor is mounted inside HVAC unit to conduct the above test HVAC unit has to be dismantled. Alternatively following test can be con- ducted without dismantling the HVAC unit: 1. Switch OFF the HVAC unit and allow the HVAC unit to come to ambient temperature. 2. Open the driver side lower panel. 3. Disconnect the Pigtail connections 4. Measure the resistance it should match to the ambient temperature. Refer graph in Inspec- tion topic. As given in the graph above (~ 5 Ohms or less for ambient temperature of 25ºC and above)