REFRIGERANT REPLACEMENT


  1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM

    SST
    09985-20010   ( 09985-02130, 09985-02150, 09985-02090, 09985-02110, 09985-02010, 09985-02050, 09985-02060, 09985-02070 )

    1. Start the engine.

    2. Turn the A/C switch ON.

    3. Operate the cooler compressor with an engine speed of approximately 1,000 rpm for 5 to 6 minutes to circulate the refrigerant and collect the compressor oil remaining in each component into the cooler compressor.

    4. Stop the engine.

    5. Recover the refrigerant from the A/C system using a refrigerant recovery unit.

  2. ADD COMPRESSOR OIL


    1. When performing work on air conditioning parts, follow the oil guidelines below in order to protect the cooler compressor.

      Part and Condition Oil Level (cc) Work Procedure
      Compressor replacement -100 to -120 Drain oil from new compressor
      Condenser replacement 35 to 55 Fill oil into replacement part
      Evaporator replacement 40 to 60
      A/C pipe replacement High pressure 5 to 25
      Low pressure
      When discharging refrigerant gas quickly 30 to 50 While applying vacuum, use manifold gauge to fill oil from low pressure side valve

  3. CHARGE REFRIGERANT

    SST
    09985-20010   ( 09985-02130, 09985-02150, 09985-02090, 09985-02110, 09985-02010, 09985-02050, 09985-02060, 09985-02070 )

    1. Perform vacuum purging using a vacuum pump.

    2. Charge refrigerant HFC-134a (R134a).

      Standard
      Destination Air Conditioning Type Refrigerant Charging Amount
      except G.C.C Countries w/o Rear Cooler 550 +/-50 g (19.4 +/-1.8 oz.)
      w/ Rear Cooler 700 +/-30 g (24.7 +/-1.1 oz.)
      G.C.C Countries w/o Rear Cooler 750 +/-30 g (26.5 +/-1.1 oz.)
      w/ Rear Cooler 1000 +/-50 g (35.3 +/-1.8 oz.)
      A01GLM7E02
      Text in Illustration
      *a Amount to be charged *b Charge 100 g (3.53 oz)
      *c Mean value in proper range *d Point where bubbles disappear
      *e Overcharged *f Pressure
      *g Sub-cool system *h Refrigerant amount

      Note


      • Do not operate the cooler compressor before charging refrigerant as the cooler compressor will not work properly without any refrigerant, and will overheat.

      • Approximately 200 g (7.05 oz.) of refrigerant may need to be charged after bubbles disappear. The refrigerant amount should be checked by measuring its quantity, and not with the sight glass.

  4. WARM UP ENGINE


    1. Warm up the engine at less than 1850 rpm for 2 minutes or more after charging the refrigerant.

      Note

      Be sure to warm up the compressor when turning the A/C switch ON after removing and installing the cooler refrigerant lines (including the compressor) to prevent damage to the compressor.

  5. CHECK FOR LEAKAGE OF REFRIGERANT


    1. After recharging the refrigerant gas, check for refrigerant gas leakage using a halogen leak detector.

    2. Perform the operation under these conditions:


      • Stop the engine.

      • Secure good ventilation (the halogen leak detector may react to volatile gases other than refrigerant, such as evaporated gasoline or exhaust gas).

      • Repeat the test 2 or 3 times.

      • Make sure that some refrigerant remains in the refrigeration system.

        Tech Tips

        When compressor is off:

        approximately 392 to 588 kPa (4 to 6 kgf/cm2, 57 to 85 psi)

    3. A01GLRYE01
      Text in Illustration
      *1 Halogen Leak Detector
      *a Check for Leakage

      Using a halogen leak detector, check the refrigerant line for leakage.

    4. If a gas leak is not detected on the drain hose, remove the blower motor control (blower resistor) from the cooling unit. Insert the halogen leak detector sensor into the unit and perform the test.

    5. Disconnect the connector and wait for approximately 20 minutes. Bring the halogen leak detector close to the pressure switch and perform the test.