Operation CHARM: Car repair manuals for everyone.

Refrigerant Discharging Procedure




1. Connect the manifold gauge set to the system.
2. Put a towel under the open end of the center hose.
3. Open the high pressure hand valve slowly to discharge the refrigerant slowly.

CAUTION: If discharging the refrigerant is too fast, compressor oil may drain from the system.

4. Check if a towel is stained with oil. If so, gently lock the hand valve.
5. If the manifold gauge reading drops below 3.5 kg/sq.cm, open the low pressure hand valve slowly.
6. Open the high and low pressure hand valve slowly in order to drop the system pressure until the gauge indicates 0 kg/sq.cm.