Charging A/C System

CHARGING
1. With the handles turned in all the way (valve closed), install the adapter valve to the low-pressure side of the gauge manifold.
2. Connect the charging hose (blue) to the adapter valve.
3. Connect the quick joint (for low-pressure) to the charging hose (blue).

CAUTION:
- Use tools that are suited to R-134a.
- To install the quick joint, press section "A" firmly against the service valve until a click is heard. When connecting, run your hand along the hose while pressing to ensure that there are no bends in the hose.

4. Connect the quick joint (for low-pressure) to the low- pressure service valve.

NOTE: The low-pressure service valve should be connected to the suction hose.

5. Close the high and low-pressure valves of the gauge manifold.
6. Install the vacuum pump adapter to the vacuum pump.
7. Connect the vacuum pump plug to the vacuum pump adapter.
8. Connect the charging hose (yellow) to the R-134a connection port of the vacuum pump adapter.
9. Tighten the adapter valve handle (valve open).
10. Open the low-pressure valve of the gauge manifold.
11. Turn the power switch of the vacuum pump to the "ON" position.

NOTE: Even if the vacuum pump power switch is turned ON, the vacuum pump will not operate because of the power supply connection in step (7).

CAUTION: Do not operate the compressor for evacuation.

12. Turn the vacuum pump adapter switch to the R-134a side to start the vacuum pump.
13. Evacuate to a vacuum reading of 100 kPa (29.5 inHg) or higher (takes approximately 10 minutes).

CAUTION:
Do not operate the compressor in the vacuum condition; damage may occur.

14. Turn the vacuum pump adapter switch "OFF" and allow to stand it for 5 minutes.

CAUTION: If the negative pressure drops, increase the tightness of the connections, and then repeat the evacuation procedure from step (12).

15. Carry out a leak test. (Good if the negative pressure does not drop.)




16. Turn the handle of the adapter valve back all the way (valve closed), remove it from the gauge manifold and install the bulk container.




17. Open the valve of the bulk container.

CAUTION:
If the bulk container is inverted, liquid refrigerant may be drawn into the compressor damaging it by hydraulic lock. Keep the bulk container upright to ensure that refrigerant is charged in gas state.

18. Tighten the handle of the adapter valve (valve open) to charge the system with refrigerant.
19. If the refrigerant is not drawn in, turn the handle of the adapter valve back all the way (valve closed).

CAUTION: The leak detector for R-134a should be used.

20. Check for gas leaks using a leak detector.
If a gas leak is detected, re-tighten the connections, and then repeat the charging procedure from evacuation in step (12).

21. Start the engine.
22. Operate the air conditioning and set to the lowest temperature (MAXIMUM COOL).
23. Fix the engine speed at 1,500 r/min.

CAUTION: If the bulk container can is inverted, liquid refrigerant may be drawn into the compressor damaging it by hydraulic lock. Keep the bulk container upright to ensure that refrigerant is charged in gas state.

24. Tighten the handle of the adapter valve (valve open) to charge the required volume of refrigerant.
25. After charging with refrigerant, turn the handle of the adapter valve back all the way (valve closed).
26. Tighten the charging valve handle (valve closed). Remove the quick joint (for low-pressure) from the low-pressure service valve.