Refrigerant Recovery

SPECIAL TOOL(S)

WARNING: USE EXTREME CARE AND OBSERVE ALL SAFETY PRECAUTIONS RELATED TO THE USE OF REFRIGERANTS.

CAUTION:
^ If a refrigerant recovery or recycling station is used, the following general procedures should be observed in addition to the operating instructions provided by the equipment manufacturers.
^ The A/C Refrigerant Analyzer must be used before the recovery of any vehicle's A/C refrigerant. Failure to do so puts shop bulk refrigerant at risk of contamination. If the vehicle A/C refrigerant is contaminated, refer the customer to return to the repair facility that performed the last A/C repair. If the customer wishes to pay the additional cost, use the A/C recovery equipment that is designated for recovering contaminated A/C refrigerant. All contaminated A/C refrigerant must be disposed of as hazardous waste. For all equipment, follow the equipment manufacturers procedures and instructions.

NOTE:
^ Hoses should have shutoff devices or check valves within 305 mm (12 in) of the hose end to minimize the introduction of non-condensable gases (air) into the recovery station, as well as to minimize the amount of refrigerant released when the hoses are disconnected.
^ Follow the equipment manufacturers procedures and instructions.

1. Connect R-134a A/C Refrigerant Center hose(s) to the vehicle gauge ports and R-134a A/C Refrigerant Center inlet fittings.
2. Turn on the power to R-134a A/C Refrigerant Center to start the recovery process. Allow R-134a A/C Refrigerant Center to recover refrigerant from the system until the station pressure goes into a vacuum. On some equipment, the pump will be shut off automatically by a low-pressure switch in the electrical system. On other units, it may be necessary to manually turn off the pump.
3. Once R-134a A/C Refrigerant Center has recovered the vehicle A/C system refrigerant, close R-134a A/C Refrigerant Center inlet valve (if equipped). Then switch off the power supply.
4. Allow the vehicle A/C system to remain closed for about two minutes. Observe the system vacuum level on the gauge. If the pressure does not rise, disconnect R-134a A/C Refrigerant Center hose(s).
5. If the system pressure rises, repeat Steps 2-4 until the vacuum level remains stable for two minutes.
6. Perform the required operations, then evacuate and recharge the A/C system.