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Home >> Mazda >> 2020 >> CX-5 Sport, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 355 (Refrigerant System) >> Refrigerant Charging >> Charging New Refrigerant

Charging New Refrigerant

WARNING: This page is about a different car, the 2020 Mazda MX-5 Miata. 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.
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 refrigerant tank valves.
    G11276384Courtesy of MAZDA MOTORS CORP.
    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.
  2. Open the high-pressure side valve of the manifold gauge.
    G11276385Courtesy of MAZDA MOTORS CORP.
  3. Verify that low-pressure side readings of the manifold gauge is at 0.1 MPa {1 kgf/cm2 , 15 psi}.
  4. Close the high-pressure side valve of the manifold gauge.
    G11276386Courtesy 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 there is gas leakage, tighten the piping connection to the specified torque, then go to the next step.
  6. Inspect for leakage again.
    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.
  7. Open the high-pressure side valve of the manifold gauge.
    G11276385Courtesy 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.
  8. Charge with approx. 1/2 of the specified amount of refrigerant.
  9. Close the high-pressure side valve of the manifold gauge.
    G11276386Courtesy of MAZDA MOTORS CORP.
  10. Start the engine and actuate the A/C compressor.
  11. Open the low-pressure side valve of the manifold gauge.
    G11276389Courtesy 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.
  12. Charge the remaining refrigerant (approx. 1/2 of amount of specified refrigerant).
  13. Close the low-pressure side valve of the manifold gauge.
    G11276390Courtesy of MAZDA MOTORS CORP.
  14. Stop the engine.
  15. Perform the leak test. (See LEAK TEST .)
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