Using Vacuum Pump

CHARGING REFRIGERANT





1. With the handle turned out all the way (valve open), install the charging valve to the service can.
2. Turn the handle of the adaptor valve back all the way (valve closed), remove it from the gauge manifold and install the service can.
3. Tighten the handle of the charging valve (valve closed) to puncture the service can.





4. Turn the handle of the charging valve back (valve open) and tighten the handle of the adaptor valve (valve open) to charge the system with refrigerant.

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

5. If the refrigerant is not drawn in, turn the handle of the adaptor valve back all the way (valve closed).
6. 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..

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

7. Start the engine.
8. Operate the A/C and set to the lowest temperature (MAX. COOL).
9. Fix the engine speed at 1,500 rpm.
10. Tighten the handle of the adaptor valve (valve open) to charge the required volume of refrigerant.

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

11. After charging with refrigerant, turn the handle of the adaptor valve back all the way (valve closed).
12. Tighten the charging valve handle (valve closed). Remove the quick joint (for low pressure) from the low- pressure service valve.

NOTE: If the service can is not emptied completely, keep the handles of the charging valve and adaptor valve closed for the next charging.