Discharging and Recovery

REFRIGERANT RECOVERY

NOTE: In order to minimize the discharge of refrigerants into the atmosphere, the use of recovery and recycling stations for the refrigerant system must be used for air conditioners. Use of a U.L.-approved recovery/recycling device such as Rotunda Model Number 156-00001 or equivalent, (which meets SAE Standard J1991), must be used during any A/C system repair and recharge procedure which requires that the system be discharged.

CAUTION: Use extreme care and observe all safety and service precautions related to the use of refrigerants. Failure to do so could contribute to environmental pollution.

A Rotunda R-134a A/C Service Center 078-00850 or equivalent recycling station must be used. The following general procedures should be observed as well as the operating instructions provided by the equipment manufacturer.

1. Connect the refrigerant recycling station hoses to vehicle A/C service ports and recovery station inlet fitting.
2. Turn power to the recycling station ON to start them recovery process. Allow the recycling station to pump the refrigerant from the system until the system pressure is reduced to a vacuum.

NOTE: On some stations, 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 the recycling station has evacuated the vehicle A/C system, close the station inlet valve (if equipped). Then switch OFF the electrical power.
4. Allow the vehicle A/C system to remain closed for about two minutes. Observe the system pressure level as shown on the gauge. If the pressure does not rise, disconnect recycling station hoses.
5. If the system pressure rises, repeat steps 2, 3 and 4 until the vacuum level remains stable for two minutes.
6. Perform the required service operations. Evacuate and recharge the A/C system.