New Holland CX720 Repair Manual page 3038

BODY AND STRUCTURE - ENVIRONMENT CONTROL Air-conditioning system
Compressor - Static description (E.40.C.31 - C.30.A.20)
The compressor, mounted inside the engine compartment, is driven by the crankshaft pulley. Refrigerant and oil is
moved through the air conditioning system by the compressor, which lubricates and cools the unit during operation.
An electromagnetic clutch is used to engage or disengage the compressor as required when operating the air condi-
tioning system. The clutch is of a stationary coil type and forms an integral part of the compressor pulley assembly.
When the coil is energized, the clutch plate is pulled against the rotating pulley. De-energizing the coil will allow the
plate to return to a standby position.
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