New Holland CX720 Repair Manual page 3040

BODY AND STRUCTURE - ENVIRONMENT CONTROL Air-conditioning system
Evaporator - Static description (E.40.C.33 - C.30.A.20)
The evaporator is located in the ventilation housing behind the combine cab. Similar to the condenser, the evaporator
core consists of numerous tubes mounted in a series of thin aluminum cooling fins. The fins and tubing are designed
to transfer heat from the cab air to the cold refrigerant liquid as it moves through the evaporator tubing.
The low-pressure liquid inside the tubes remove heat from air passing around them. As the refrigerant absorbs heat,
it boils and flashes to a vapor. The low-pressure vapor then flows to the compressor to repeat the refrigerant cycle.
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