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SYSTEM HA-15 < SYSTEM DESCRIPTION > C D E F G H J K L M A B HA N O P The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the Freeze Protection When evaporator fin temperature is low, compressor stops so that freeze of evaporator can be prevented. HAC-19, "FRONT AUTOMATIC AIR CONDITIONING SYSTEM : Compressor Control" air conditioning) • Refer to HAC-163, "FRONT MANUAL AIR CONDITIONING SYSTEM : Compressor Control" conditioning) REFRIGERANT SYSTEM PROTECTION Refrigerant Pressure Sensor • The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sensor, installed at the upper liquid tank. The refrigerant pressure sensor detects the pressure inside the • ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger- ant pressure sensor is following conditions; - Approximately 3,120 kPa (31.8 kg/cm 2 , 452 psi) or more (Engine speed is less than 1,500 rpm.) - Approximately 2,740 kPa (27.9 kg/cm 2 , 397 psi) or more (Engine speed is 1,500 rpm or more.) - Approximately 140 kPa (1.4 kg/cm 2 , 20 psi) or less Pressure Relief Valve The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor. 2 , 551 psi)]. |