Discharging and Recovery

1. Prior to recovering or charging the refrigerant system, you must verify the purity of the refrigerant.

NOTE: Some R-134a charging/recycling stations require the use of an A/C manifold gauge set.

2. Connect the R-134a charging/recycling station to the low- and high- pressure service gauge port valves.
3. Recover the refrigerant from the system following the operating instructions provided by the equipment manufacturer.
4. Once the charging/recycling station has recovered the vehicle A/C system refrigerant, close the station inlet valve (if so equipped). Then switch off the power supply.
5. Allow the vehicle A/C system to remain closed for about two minutes. Observe the system vacuum level as shown on the gauge. It the pressure does not rise, disconnect the station hose(s).
6. If the system pressure rises, repeat steps 2 through 5 until the vacuum level remains stable for two minutes.
7. Perform the required repairs, then evacuate and recharge the A/C system;