Escape, Mariner 2006-2007

Discharging the System


Before beginning this procedure, refer to the precautions at the beginning of this section. Only a MVAC-trained, EPA-certified, automotive technician should service the A/C system or its components.

Ford Motor Company recommends use of an A/C service center to carry out recovery, evacuation and charging of the refrigerant system. If an A/C service center is not available, refrigerant system recovery, evacuation and charging may be accomplished using a separate recovery station, vacuum pump, charging meter and manifold gauge set.

Leaks in refrigerant system service equipment, hoses or gauges can cause a leak in vacuum that may be misinterpreted as a problem with the vehicle's refrigerant system. It is necessary to leak-test all refrigerant system service equipment, hoses and gauges on a weekly basis to verify that no leaks are present.

  1. Prior to recovering, you must verify the purity of the refrigerant, as outlined in this section.
    Some R-134s service centers require the use of an A/C manifold gauge set.

  3. Connect an R-134a refrigerant service center to the low- and high-pressure service gauge port valves following the operating instructions provided by the equipment manufacturer.
  5. Recover the refrigerant from the system following the operating instructions provided by the equipment manufacturer.
  7. Once the refrigerant service center has recovered the refrigerant, close the service center inlet valve (if equipped). Then, switch OFF the power supply.
  9. Allow the system to remain closed for about 2 minutes, and observe the system vacuum reading on the gauge. If the pressure does not rise, disconnect the recovery equipment.
  11. If the system pressure rises, repeat Steps 2 through 5 until the vacuum level remains stable for 2 minutes.
  13. Carry out the required repairs, then evacuate and recharge the A/C system.