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Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Service >> Air Conditioning System >> Precaution
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Air Conditioning System: Precaution

  1. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME 
  2. ALWAYS WEAR EYE PROTECTION 
    Fig 1: Precaution Diagram - Handling Refrigerant
    G01333740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. BE CAREFUL NOT TO GET LIQUID REFRIGERANT IN YOUR EYES OR ON YOUR SKIN 

    If liquid refrigerant gets in your eyes or on your skin.

    1. Wash the area with lots of cool water.
      CAUTION: Do not rub your eyes or skin.
    2. Apply clean petroleum jelly to the skin.
    3. Go immediately to a physician or hospital for professional treatment.
    Fig 2: Precaution Diagram - Handling Refrigerant (For Eyes And Skin)
    G01333741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. NEVER HEAT CONTAINER OR EXPOSE IT TO NAKED FLAME 
  5. BE CAREFUL NOT TO DROP CONTAINER AND NOT TO APPLY PHYSICAL SHOCKS TO IT 
  6. DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM 

    If there is not enough refrigerant in the refrigerant system oil lubrication will be insufficient and compressor burnout may occur, so take care to avoid this, necessary care should be taken.

  7. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILE COMPRESSOR IS OPERATING 

    If the high pressure valves opened, refrigerant flows in the reverse direction and could cause the charging cylinder to rupture, so open and close the only low pressure valve.

  8. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT 

    If refrigerant is overcharged, it causes problems such as insufficient cooling, poor fuel economy, engine overheating etc.

    Fig 3: Precaution Diagram - For Refrigerant Level
    G01333742Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002