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REFRIGERATION SYSTEM ATC-19 C D E F G H I K L M A B ATC REFRIGERATION SYSTEM PFP:KA990 Refrigerant Cycle NJS0002S REFRIGERANT FLOW The refrigerant flows from the compressor, through the condenser with liquid tank, through the evaporator, and FREEZE PROTECTION To prevent evaporator frozen up, the evaporator air temperature is monitored, and the voltage signal to the Refrigerant System Protection NJS0002T REFRIGERANT PRESSURE SENSOR The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen- 2 , 452 psi), or below about 118 kPa (1.2 kg/cm 2 , 17 psi). PRESSURE RELIEF VALVE The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor. 2 , 540 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into the RJIA0849E |