The A/C refrigerant system is a clutch cycling orifice tube type. The system components are: compressor, clutch , condenser core, evaporator core , suction accumulator/drier, connecting refrigerant lines.
The refrigerant system operation is controlled by the: evaporator core orifice, cycling switch, compressor pressure relief valve, pressure cut-off switch
The refrigerant system incorporates an A/C compressor controlled by an A/C cycling switch. The A/C cycling switch senses A/C evaporator core pressure to control A/C compressor operation. An A/C compressor pressure relief valve is installed in the A/C manifold and tube to protect the refrigerant system against excessively high refrigerant pressures. An A/C evaporator core orifice is installed in the condenser to evaporator tube to meter the liquid refrigerant into the A/C evaporator core.