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 in.Hg). 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 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 leak. A/C Refrigerant Leak Test

4. Add the same amount of new refrigerant oil to the system that was removed during recovery. Use only DENSO ND-OIL 8 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 Test

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