AM.II.G.R2
Risk managementRecovery of vapor-cycle refrigerant.
From the FAA library
- Chapter 16: Cabin Environmental Control Systems › Vapor Cycle Air Conditioning › Vapor Cycle Air Conditioning System Components
Vapor Cycle Air Conditioning System Components By examining each component in the vapor cycle air conditioning system, greater insight into its function can be gained. Refrigerant For many years, dichlorodifluoromethane (R12) was the standard refrigerant used in aircraft vapor cycle ... soft components, such as hoses and seals, could result causing leaks and or malfunction. Use only the specified refrigerant when servicing vapor cycle air conditioning systems. Figure 16-74. A basic vapor cycle air conditioning system. The compressor…
- Chapter 16: Cabin Environmental Control Systems › Vapor Cycle Air Conditioning › System Servicing
Water is removed from the system by evacuation. Anytime the system refrigerant charge falls below atmospheric pressure, the refrigerant is lost, or the system is opened, it must be evacuated before recharging. Evacuating a vapor cycle air conditioning system ... known as pumping down the system. A vacuum pump is connected and pressure inside the system is reduced to vaporize any water that may exist. Continued operation of the vacuum pump draws the water vapor from the system. A typical…
- Chapter 16: Cabin Environmental Control Systems › Vapor Cycle Air Conditioning › Vapor Cycle Air Conditioning Servicing Equipment
modern refrigerant recovery/recycle/charging service unit. Electronic control of solenoid activated valves combine with a built-in system for recovering, recycling, and recharging. A built-in vacuum pump and heated refrigerant reservoir are also included. Figure 16-89. A 30 pound ... R134a refrigerant container with dual fittings. The fitting controlled by the blue valve wheel opens to the vapor space above the liquid refrigerant for connection to the low side of the vapor cycle system. The fitting controlled…