Air Conditioning: Notes

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

• A/C compressor
• A/C clutch assembly
• A/C condenser core
• A/C evaporator core
• Suction accumulator
• Connecting refrigerant lines

The refrigerant system operation is controlled by the:

• A/C evaporator core orifice.
• A/C cycling switch.
• A/C compressor pressure relief valve.
• dual function pressure 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.