Refrigerant: Service and Repair

DISCHARGE PROCEDURE

WARNING: Keep away from open flames. The refrigerant, although nonflammable, will produce a poisonous gas if burned.

Work in a well-ventilated area. Refrigerant evaporates quickly, and can force all the air out of a small enclosed area.






1. Connect the Refrigerant Recovery System to the vehicle's A/C system.
2. Operate the Refrigerant Recovery System according to the manufacturer's instructions.
SYSTEM EVACUATION
1. When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using a vacuum pump. (If the system has been open for several days, the receiver/dryer should be replaced).






2. Attach an Air Conditioning Service Station as shown.
3. Start the pump, then open both gauge valves. Run the pump for about 15 minutes. Close the valves and stop the pump. The low gauge should indicate above 700 mm Hg (27 in-Hg) and remain steady with the valves closed

NOTE: If low pressure does not reach more than 700 mm Hg (27 in-Hg) in 15 minutes, there is probably a leak in the system. Check for leaks, and repair (see Leak Test below).

4. If there are no leaks open the valves and continue pumping for at least another 15 minutes, then close both valves and stop the pump.






LEAK TEST

WARNING: When handling refrigerant (R-12):

- Always wear eye protection.
- Do not let refrigerant get on your skin or in your eyes.
IF IT DOES:
- Do not rub your eyes or skin.
- Splash large quantities of cool water in your eyes or on your skin.
- Rush to a physician or hospital for immediate treatment. Do not attempt to treat It yourself.
- Keep refrigerant containers (cans of R-12) stored below 40°C (100°F).
- Keep away from open flame. Refrigerant, although non-flammable. will produce poisonous gas if burned.
- Work in well-ventilated area. Refrigerant evaporates quickly, and can force all the air out of a small, enclosed area.
1. Attach an Air Conditioning Service Station as shown.
2. Open high pressure valve to charge the system to about 100 kPa (14 psi), then close the supply valve.
3. Check the system for leaks using a leak detector.
4. If you find leaks that require the system to be opened (to repair or replace hoses, fittings, etc.), release any charge in the system according to the Discharge Procedure.
5. After checking and repairing leaks, the system must be evacuated.






CHARGING PROCEDURES
Refrigerant capacity: 900-950 g (32-34 oz)
Always wear eye protection when charging the system.

CAUTION: Do not overcharge the system; the compressor will be damaged.

1. Attach an Air Conditioning Service Station as shown.
2. Open the low gauge valve (adjust it as necessary so pressure does not exceed 280 kPa (2.8 kg/cm2, 40 psi) white charging).

WARNING: Do not open high gauge valve.

3. Start the engine and turn on the A/C switch and heater fan switch and turn the air mix dial (lever) to "COLD."

NOTE: Run the engine below 1,500 rpm.

4. Charge the system with 900-950 g (32-34 oz) of refrigerant.
5. When fully charged, close the gauge valves then disconnect the hoses from the Service Station.