A/C System Charging

A/C System Charging

CAUTION
- Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
- Be careful when connecting service equipment.
- Do not breathe refrigerant or vapor.


NOTE:

- If accidental system discharge occurs, ventilate the work area before resuming service.
- Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.

1. Connect an R-134a refrigerant recovery/recycling/charging station (A) to the high-pressure service port (B) and the low-pressure service port (C), as shown, following the equipment manufacturer's instructions.






2. Recover the refrigerant in the A/C system A/C Refrigerant Recovery.

3. Evacuate the system until the suction gauge reads approximately -93.3 kPa (-700 mmHg, -27.6 inHg). Check that the system holds a vacuum for 15 minutes.

- If the A/C system hold vacuum for 15 minutes, the system does not have a large leak. Finish the system evacuation A/C System Evacuation, then go to step 4.
- If the A/C system does not hold vacuum for 15 minutes, the A/C system has a leak. Find and repair the leak A/C Refrigerant Leak Check.

4. Add the same amount of new refrigerant oil to the system that was removed during recovery. Use only SP-10 refrigerant oil.

5. Charge the system with the specified amount of R-134a refrigerant. Do not overcharge the system; the A/C compressor will be damaged.

Select the appropriate units of measure for your refrigerant charging station.





6. Check for refrigerant leaks A/C Refrigerant Leak Check.

7. Check the system performance A/C System Test.