07/03/2024 08:30:51

A/C Refrigerant (Recovery and Recharge)

Correction code 18200102 FRT 1.32 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

  • 2024-03-04: Added step to reconnect MV power if disconnected during removal of component.
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Warning
This procedure is a DRAFT, although it has been validated. Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near high voltage systems and components. Provide corrections and feedback to ServiceDevelopment@teslamotors.com.
  • 1711245-00-A Snap On Ecotechnics Dual Gas AC Machine
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Warning
Only personnel familiar with both vehicle A/C systems and the A/C machine are permitted to service the systems. Always read and understand the A/C machine operator’s manual before operating the A/C machine.
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Warning
Refrigerant R1234yf is hazardous liquids and, if handled incorrectly, can cause serious injury. Suitable Personal Protective Equipment (PPE), consisting of face protection, heat-proof gloves, rubber boots, and apron or waterproof overalls, must be worn when performing recovery or recharge on the air conditioning system.
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Warning
Do not breathe refrigerant and lubricant vapor or mist. Exposure might cause personal injury, especially to the eyes, nose, throat, and lungs. Perform service and repairs in a well-ventilated area. If accidental discharge occurs, ventilate the work area before returning to work. Additional health and safety information is available from equipment, refrigerant, and lubricant manufacturers. Refer to manufacturer's instruction manuals and Material Safety Data Sheets.
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Warning
Avoid using an extension cord on the A/C machine whenever possible. If an extension cord is used, it might overheat and cause a fire. If you must use an extension cord, use the shortest extension cord possible with a minimum 14AWG wire rating.
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Warning
Do not use compressed air to pressure test or leak test the A/C machine or the vehicle A/C system. Some mixtures of air and refrigerant are combustible at elevated pressures. These mixtures are potentially dangerous and might result in fire or explosion, causing personal injury or property damage.
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Warning
Be aware of fire hazards. Do not use the A/C machine in the vicinity of spilled or open containers of flammable liquid.
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Warning
If you are operating the A/C machine in an environment where temperatures exceed 120 degrees Fahrenheit / 49 degrees Celsius, you must wait 10 minutes between tasks.
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Warning
Never transfer refrigerants to a cylinder or tank unless it is Department of Transportation approved for refilling. DOT approval is indicated by the designation “DOT 4BA” or “DOT 4BW” stamped on a tank’s collar (handle). If a refrigerant tank is overfilled, it might explode. Be aware that when transferring refrigerant into a tank, the safe filling level must be controlled by weight, and must not exceed 60% of the tank’s gross weight rating.
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CAUTION
Only use Tesla-specified refrigerant in the vehicle A/C system and the A/C machine. Do not mix refrigerant types within a vehicle A/C system or in the same container. Mixing refrigerants can severely damage the A/C machine and the vehicle A/C system.
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CAUTION
Only use the specified type of A/C oil.
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CAUTION
Do not allow refrigerant oil to come in contact with any surfaces of the vehicle as it might cause damage to the paint, trim, or finish of the vehicle.
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CAUTION
Always keep refrigerant oil in its original container, tightly sealed, and clearly marked so as to prevent contamination of any kind.
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CAUTION
Do not over-fill the vehicle’s A/C system with oil. Replace only the exact amount that is removed. Always measure the amount of oil extracted and refill it with that exact amount.
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CAUTION
Always maintain different oil canisters for different types of oil. These canisters should be clearly marked to avoid any cross-contamination between the oils.
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CAUTION
The refrigerant cylinders currently in use as source tanks are disposable cylinders. Before they are discarded, connect the disposable refrigerant cylinder to the recovery equipment and bring to a vacuum to ensure that all of the refrigerant has been removed. Then mark the cylinder “Empty”.
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CAUTION
Always reference the information label to determine the refrigerant capacity of the vehicle. Do not over-fill or under-fill the A/C system with refrigerant.

Recovery

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CAUTION
Failure to follow these recovery instructions could cause catastrophic damage to the A/C system.
  1. Perform a calibration check of the A/C machine. Refer to the A/C machine operator’s manual for instructions on how to perform a calibration check of the A/C machine. If the machine fails the calibration check, do not use the machine until a service representative has calibrated the A/C machine.
  2. Inspect the entire length of the hoses and fittings for degradation, cracks, or damage. Make sure that the condition of the hoses and fittings is such that they will not leak when in service.
  3. Inspect the A/C machine’s power supply cord and plug that they are not damaged and the insulation has not been compromised in any way.
  4. Make sure to use the appropriate type of A/C oil.
  5. Set up the A/C machine.
  6. Put the vehicle in Service Mode. See Service Mode.
  7. Unlock the vehicle gateway. See Gateway (Unlock).
  8. Navigate to Refrigerant System on the vehicle touchscreen.
    Informational PurposesAn informational icon, calling your attention
    Note
    Touch Service Mode > Thermal > Refrigerant System
  9. Touch Start Thermal Fill Drain (Refrigerant only).
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    Note
    Allow routine to complete. Ensure routine is successful.
  10. Open the powered frunk.
  11. Remove the rear underhood apron. See Underhood Trim - Rear Apron Assembly (Remove and Install).
  12. Remove the frunk. See Frunk Assembly (Remove and Install).
  13. Remove the caps from the A/C high pressure and low pressure ports.
  14. Connect the red high pressure hose to the A/C high pressure port, and the blue low pressure hose to the A/C low pressure port.
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    Note
    The high pressure and low pressure ports are of different sizes, and match the hose couplers accordingly.
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    Note
    Pull back the frunk wall if installed to access the low side port.
  15. Follow the A/C machine instructions for recovering refrigerant and oil from the vehicle.
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    Note
    The A/C machine will chime when recovery is complete.
  16. Take note of or print the amount of refrigerant and oil recovered after recovery is complete.

A/C Vacuum and Run Leak Test

  1. Set vacuum time to 15 minutes and leak test to ON.
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    Note
    Machine will chime once the process is completed.
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    Note
    Vehicle may be left unattended.
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    Note
    Verify leak test passed before continuing.

Recharge

  1. Perform the A/C recharge.
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    Note
    Enter refrigerant and oil amount noted at AC recovery. Settings should match notes. Select Both Sides for charge. Select ND-11 MSX using bottle icon.
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    Note
    Machine will chime once the process is completed.
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    Note
    Vehicle may be left unattended.
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    Note
    If desired, use the Dye Inject option to inject leak detection dye.
  2. Reconnect MV power if disconnected during removal. See Disconnect MV Power.
  3. On the vehicle touchscreen, navigate to Refrigerant System.
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    Note
    Touch Service Mode > Thermal > Refrigerant System
  4. Touch Stop Thermal Fill Drain.
    Informational PurposesAn informational icon, calling your attention
    Note
    Allow routine to complete. Ensure routine is successful.
  5. Perform the Heat Pump Commissioning through the touchscreen.
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    Note
    Touch Thermal > Sensors and Valves > Run Heat Pump Commissioning, and then click Run. Close once routine is passed.
  6. Proceed with the Hose Equalize steps to complete the A/C recharge process and follow instructions displayed on the A/C machine.
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    Note
    Disconnect high side coupler from the vehicle, turn the A/C on, temperate setting LO, panel mode on, fresh air mode on, and blower speed set to 10.
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    Note
    Verify Hose Equalize settings. Verify discharge pressure does not exceed 26 bar and suction pressure is not below 1.15 bar.
  7. Install the caps (x2) onto the A/C ports

Performance Tests

  1. Perform Thermal Performance through the touchscreen.
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    Note
    Touch Thermal > Actions > Test Thermal Performance, and then click Run. Close once the routine is completed.
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    Note
    If thermal test fails, see https://toolbox.teslamotors.com/articles/206000.