Hardline Plumbing
ACC utilizes aluminum plumbing to reduce weight and maximize refrigerant containment. Hardline plumbing eliminates permeability sometimes associated with standard automotive-type refrigerant hoses used by competitive manufacturers. Hardline plumbing also maintains aircraft component quality that customers expect in modern turbine helicopters.

Refrigerant Bypass System
The ACC refrigerant bypass system was developed to eliminate compressor clutch cycling. The bypass improves temperature control and extends compressor and belt life significantly.

How does it work? The bypass system senses evaporator temperature. When it reaches the point designated by the cockpit temperature control knob, the bypass valve opens and refrigerant bypasses the evaporators and is returned to the compressor to repeat the cycle. This occurs until the evaporator coil temperature rises above the set-point. The bypass valve closes and the refrigerant completes its cycle through the cockpit and cabin evaporators.

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