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Charging New Refrigerant

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • If the refrigerant system is charged with a large amount of refrigerant when inspecting for gas leakage, and if any leakage should occur, the refrigerant will be released into the atmosphere. In order to prevent the accidental release of refrigerant which can destroy the ozone layer in the stratosphere, follow the proper procedures and charge with only a small amount of refrigerant when inspecting for gas leakage.
  • If the engine is started while the valve on the high pressure side is open, highly pressurized refrigerant could backflow into the refrigerant tank and cause damage. Never start the engine while the valve on the high pressure side is open.
CAUTION:
  • If charging of refrigerant is started from the low pressure side, the A/C compressor vanes will not expand outward and an abnormal sound may be heard. Always start the refrigerant charging from the high pressure side.
  1. Open the valve of the refrigerant tank.
    Fig 1: Opening Refrigerant Tank Valve
    G10910187Courtesy of MAZDA MOTORS CORP.
  2. Weigh the refrigerant tank to charge the suitable amount of refrigerant.
  3. Open the high-pressure side valve of the manifold gauge.
  4. When the low-pressure side reading increases to 0.098 MPa {1.0 kgf/cm 2  , 14 psi}  , close the high-pressure side valve of the manifold gauge.
    Fig 2: Closing High-Pressure Side Valve Of Manifold Gauge
    G10910188Courtesy of MAZDA MOTORS CORP.
  5. Inspect for gas leakage from the piping connection using a gas leak detector or a florescent agent-detecting UV black light.
    • If there is no leakage, go to Step 7.
    • If leakage is found at a loose joint, tighten the joint, then go to next step.
  6. Inspect for leakage again.
  7. Open the high-pressure side valve of the manifold gauge and charge with refrigerant until the weight of refrigerant tank has decreased 250 g {8.82 oz}  from the amount in Step2.
    Fig 3: Opening High-Pressure Side Valve Of Manifold Gauge
    G10910189Courtesy of MAZDA MOTORS CORP.
  8. Close the high-pressure side valve of the manifold gauge.
    Fig 4: Closing High-Pressure Side Valve Of Manifold Gauge
    G10910190Courtesy of MAZDA MOTORS CORP.
  9. Start the engine and actuate the A/C compressor.
    WARNING:
    • If the valve on the high pressure side is opened while the engine is running, highly pressurized refrigerant could backflow into the refrigerant tank and cause damage. Never open the valve on the high pressure side while the engine is running.
  10. Open the low-pressure side valve of the manifold gauge and charge with refrigerant until the weight of the refrigerant tank has decreased to the regular amount from the amount in Step 2.
    Fig 5: Opening Low-Pressure Side Valve Of Manifold Gauge
    G10910191Courtesy of MAZDA MOTORS CORP.
    WARNING:
    • If the refrigerant system is charged with the refrigerant tank upside down, liquid refrigerant will be charged into the system, and the A/C compressor could become highly pressurized and damaged. Never charge refrigerant with the refrigerant tank upside down.
  11. Close the low-pressure side valve of the manifold gauge and the valve of the refrigerant tank.
    Fig 6: Closing Low-Pressure Side Valve Of Manifold Gauge
    G10910192Courtesy of MAZDA MOTORS CORP.
  12. Stop the engine and A/C compressor.
  13. Perform the leak test. (See Leak Test .)
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