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Charging New Refrigerant

WARNING: This page is about a different car, the 2018 Mazda 6. 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 charging the system with refrigerant using refrigerant tank, running the engine with the high-pressure side valve open is dangerous. Pressure within the refrigerant tank will increase and the refrigerant tank could explode, scattering metal fragments and liquid refrigerant that can seriously injure you. Therefore, do not open the high-pressure side valve while the engine is running.
  1. Open the valve of the refrigerant tank.
    Fig 1: Refrigerant Tank Valve Location
    G11431979Courtesy of MAZDA MOTORS CORP.
  2. Weigh the refrigerant tank to charge the suitable amount of refrigerant.
  3. Open the low-pressure side valve of the manifold gauge.
    Fig 2: Opening Low-Pressure Side Valve Of Manifold Gauge
    G11431980Courtesy of MAZDA MOTORS CORP.
  4. Verify that low-pressure side readings of the manifold gauge is at 0.1 MPa {1 kgf/cm2, 15 psi}.
  5. Close the low-pressure side valve of the manifold gauge.
    Fig 3: Closing Low-Pressure Side Valve Of Manifold Gauge
    G11431981Courtesy of MAZDA MOTORS CORP.
  6. Inspect for leakage from the cooler pipe/hose connections using the gas leak tester.
    • If there is no leakage, go to Step  8.
    • If there is gas leakage, tighten the piping connection to the specified torque, then go to the next step.
  7. Inspect for leakage again.
    • If there is no leakage after tightening the joint, go to the next step.
    • If there is refrigerant leakage, inspect the refrigeration system following the symptom troubleshooting procedure. (See FOREWORD [FULL-AUTO AIR CONDITIONER] .)
    WARNING:
    • Never start the engine while the valve on the high pressure side is open. If the engine is started while the manifold gauge valve on the high pressure side is open, highly pressurized refrigerant could backflow into the refrigerant tanks and cause damage.
  8. Open the low-pressure side valve of the manifold gauge.
    Fig 4: Opening Low-Pressure Side Valve Of Manifold Gauge
    G11431980Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Never charge refrigerant with the refrigerant tanks upside down. If the refrigerant system is charged with the refrigerant tanks upside down, liquid refrigerant will be charged into the system, and the A/C compressor could become highly pressurized and damaged.
  9. Charge with refrigerant until the weight of refrigerant tank has decreased 250 g {8.82 oz} from the amount in Step  2.
  10. Close the low-pressure side valve of the manifold gauge.
    Fig 5: Closing Low-Pressure Side Valve Of Manifold Gauge
    G11431981Courtesy of MAZDA MOTORS CORP.
  11. Start the engine and actuate the A/C compressor.
  12. Open the low-pressure side valve of the manifold gauge and charge with refrigerant until the weight of the refrigerant tank has decreased regular amount from the amount in Step  2.
    Fig 6: Opening Low-Pressure Side Valve Of Manifold Gauge
    G11431980Courtesy of MAZDA MOTORS CORP.
    CAUTION:
    • Never charge refrigerant with the refrigerant tanks upside down. If the refrigerant system is charged with the refrigerant tanks upside down, liquid refrigerant will be charged into the system, and the A/C compressor could become highly pressurized and damaged.
  13. Close the low-pressure side valve of the manifold gauge.
    Fig 7: Closing Low-Pressure Side Valve Of Manifold Gauge
    G11431981Courtesy of MAZDA MOTORS CORP.
  14. Stop the engine.
  15. Perform the leak test. (See Leak Test .)
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