Air Conditioning: Notes
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The A/C refrigerant system is a clutch cycling orifice tube type. The system components are:
- A/C compressor (19703)
- A/C clutch (2884)
- Condenser core (19712)
- Evaporator core (19860)
- Suction accumulator (19C836)
- Connecting refrigerant lines
The refrigeration system operation is controlled by the:
- Evaporator core orifice (19D990).
- A/C cycling switch (19E561).
- A/C pressure relief valve (19D644).
- Pressure cutoff switch (19D594).
The refrigerant system incorporates an A/C compressor controlled by an A/C cycling switch.
The A/C cycling switch senses evaporator core pressure to control A/C compressor operation.
An A/C pressure relief valve is installed in the compressor manifold and tube assembly (19D734) to protect the refrigerant system against excessively high refrigerant pressures.
An evaporator core orifice is installed in the evaporator core inlet tube to meter the liquid refrigerant into the evaporator core.