Discharging and Recovery

WARNING: USE EXTREME CARE AND OBSERVE ALL SAFETY PRECAUTIONS RELATED TO THE USE OF REFRIGERANTS. FAILURE TO FOLLOW THIS INSTRUCTION MAY RESULT IN PERSONAL INJURY.

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. Failure to follow this instruction may result in personal injury.

CAUTION: 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. Failure to follow this instruction may result in personal injury.

NOTE: Hoses should have shut off 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.

NOTE: Follow the equipment manufacturers procedures and instructions. Failure to follow this instruction may result in personal injury.

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 as shown 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. Carry out the required operations, then evacuate and recharge the A/C system. Evacuation and Charging