Air Conditioning: Notes

The A/C refrigerant system is a clutch cycling orifice tube type. The system components include:

• A/C compressor
• Clutch and clutch field coil
• A/C condenser core
• A/C evaporator core
• Suction accumulator
• Connecting refrigerant lines

The refrigeration system operation is controlled by:

• Evaporator core orifice
• A/C cycling switch
• A/C pressure sensor
• A/C compressor pressure relief valve

The refrigerant system incorporates an A/C compressor controlled by an A/C cycling switch.

The A/C cycling switch senses the A/C suction pressure to control A/C compressor operation.

An A/C compressor pressure relief valve is installed in the rear of the A/C compressor to protect the refrigerant system against excessively high refrigerant pressures.

The A/C evaporator core orifice is installed in the condenser-to-evaporator tube to meter the liquid refrigerant into the A/C evaporator core.