Refrigerant System, Discharging
Refrigerant system, dischargingService Procedures:
Because Alldata's information dates back to the early 1980s, service and repair procedures will at times instruct technicians to vent Freon into the atmosphere when opening the air conditioning refrigeration circuit. The Clean Air Act Amendment of 1990 requires that Freon be recovered when accessing the air conditioning circuit and that technicians hold a refrigerant recovery and handling certification.
Automotive refrigerant containing CFC's is hazardous to the earth's atmosphere. To protect our environment, use an Underwriter's Laboratory (UL) approved refrigerant recovery/recycling unit such as Kent-Moore ACR3 or equivalent, whenever discharging an A/C system.
The A/C system should be serviced only by trained personnel familiar with equipment use, related safety precautions and regulations governing the discharging/handling/disposal of automotive refrigerants.
Always wear safety goggles when charging or discharging system. Use caution so that refrigerant does not come in contact with your skin or eyes. If refrigerant comes in contact with skin or eyes, do not rub, flush immediately with cool water, then seek medical attention. Keep refrigerant away from open flames, exposure to open flame will produce poisonous gas.
- disconnect wires at A/C compressor
- close both valves on A/C manifold gauge set
WARNING: Always wear safety goggles when charging or discharging system. Be sure work area is well ventilated. Refrigerant-12 is heavier than air and can accumulate in areas of poor air circulation.
Avoid inhaling fumes when using flame type leak detector. Refrigerant-12 becomes poisonous gas after coming into contact with open flame.
- connect hose from high pressure gauge to high pressure service valve (A)
- connect hose from low pressure gauge to suction service valve (B)
- open low pressure gauge valve until bubbles are visible in water or hiss is heard from discharge hose
- open high pressure valve slightly
CAUTION: Discharge A/C refrigerant system slowly to prevent loss of refrigerant oil
- close manifold gauge valves when refrigerant stops flowing