ELECTRIC INVERTER COMPRESSOR > INSTALLATION

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1. When replacing the electric inverter compressor with a new one, gradually discharge the refrigerant gas from the cap, and drain the following amount of oil from the new electric inverter compressor before installation.
   

   Standard:

   (Oil capacity inside the new electric inverter compressor: 120 to 135 cc (4.2 to 4.8 fl.oz.)) - (Remaining oil amount in the removed electric inverter compressor) = (Oil amount to be removed from the new compressor when replacing)
   

   NOTICE:

   1. When checking the compressor oil level, observe the precautions on the cooler removal/installation.
      
   2. If a new electric inverter compressor is installed without removing some oil remaining in the pipes of the vehicle, the oil amount will be too large. This prevents heat exchange in the refrigerant cycle and causes refrigerant failure.
      
   3. If the volume of oil remaining in the removed electric inverter compressor is too small, check for oil leakage.
      
   4. Be sure to use ND-OIL 11 or equivalent for compressor oil.
      
   5. If any compressor oil other than ND-OIL 11 or equivalent is used, electric inverter compressor insulation performance may decrease, resulting in leakage of electric power.
      

1. Apply sufficient compressor oil (ND-OIL 11) to a new O-ring and the fitting surface of the electric inverter compressor.
   

   Compressor oil:

   ND-OIL 11 or equivalent.
   

   NOTICE:

   1. Do not use any compressor oil other than ND-OIL 11 or equivalent.
      
   2. If any compressor oil other than ND-OIL 11 or equivalent is used, electric inverter compressor insulation performance may decrease, resulting in leakage of electric power.
      

2. Install the O-ring onto the service valve.
   

3. Install the service valve No.1 with the bolt.
   

   Torque:

   9.8 N*m{ 100 kgf*cm , 87 in.*lbf }

1. Install the electric inverter compressor with the 3 bolts.
   

   CAUTION:

   Tighten the bolts in the order indicated in the illustration.

   Torque:

   25 N*m{ 255 kgf*cm , 18 ft.*lbf }

2. Connect the connector (A).
   

3. Lock the green-colored lock (B).
   

   NOTICE:

   Wear insulated gloves when performing the procedures.

4. Connect the connector (C).
   

1. Remove the attached vinyl tape from the hose.
   

2. Apply sufficient compressor oil (ND-OIL 11 or equivalent) to a new O-ring and the fitting surface of the electric inverter compressor.
   

   Compressor oil:

   ND-OIL 11 or equivalent
   

   NOTICE:

   1. Do not use any compressor oil other than ND-OIL 11 or equivalent.
      
   2. If any compressor oil other than ND-OIL 11 or equivalent is used, electric inverter compressor insulation performance may decrease, resulting in leakage of electric power.
      

3. Install the O-ring onto the cooler refrigerant suction hose No.1.
   

4. Install the cooler refrigerant suction hose No.1 onto the electric inverter compressor with the bolt.
   

   Torque:

   9.8 N*m{ 100 kgf*cm , 87 in.*lbf }

1. Remove the attached vinyl tape from the hose.
   

2. Apply sufficient compressor oil (ND-OIL 11 or equivalent) to a new O-ring and the fitting surface of the electric inverter compressor.
   

   NOTICE:

   1. Do not use any compressor oil other than ND-OIL 11 or equivalent.
      
   2. If any compressor oil other than ND-OIL 11 or equivalent is used, electric inverter compressor insulation performance may decrease, resulting in leakage of electric power.
      

3. Install the O-ring onto the cooler refrigerant suction hose No.1.
   

4. Install the cooler refrigerant suction hose No.1 onto the electric inverter compressor with the bolt.
   

1. Remove the attached vinyl tape from the hose.
   

2. Apply sufficient compressor oil (ND-OIL 11 or equivalent) to a new O-ring and the fitting surface of the electric inverter compressor.
   

   Compressor oil:

   ND-OIL 11 or equivalent
   

   NOTICE:

   1. Do not use any compressor oil other than ND-OIL 11 or equivalent.
      
   2. If any compressor oil other than ND-OIL 11 or equivalent is used, electric inverter compressor insulation performance may decrease, resulting in leakage of electric power.
      

3. Install the O-ring onto the cooler refrigerant discharge hose No.1.
   

4. Install the cooler refrigerant discharge hose No.1 onto the electric inverter compressor with the bolt.
   

   Torque:

   9.8 N*m{ 100 kgf*cm , 87 in.*lbf }

1. Install the power steering ECU bracket with the bolt to the w/ converter inverter assembly.
   

   Torque:

   8.0 N*m{ 82 kgf*cm , 71 in.*lbf }

1. Connect the 2 water hoses with the 2 clamps to the inverter reserve tank sub-assembly.
   

2. Install the inverter reserve tank with the 2 bolts to the w/ converter inverter assembly.
   

   Torque:

   10 N*m{ 102 kgf*cm , 7 ft.*lbf }

1. Perform vacuum purging using a vacuum pump.
   

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

   
   
   
   

   Standard:

   550 to 650 g (19.4 to 22.9 oz.)
   

   SST

   07110-58060   (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)
   

   NOTICE:

   1. Do not turn the A/C on before charging with refrigerant because the compressor will overheat as a result of the cooler compressor not working properly without refrigerant.
      
   2. Approximately 100 g (3.53 oz.) of refrigerant may need to be charged after bubbles disappear.
      The refrigerant amount should be checked by quantity, and not with the sight glass.
      
   3. Avoid using the gauge manifold set that had been used for vehicles with conventional compressor oil (ND-OIL8 or equivalent) as much as possible. This will cause compressor oil remaining in the manifold to enter the vehicle, resulting in insulation performance deterioration. A gauge manifold set that had been used 3 times or less can be reused if an appropriate one is not available.
      

   HINT:

   Prepare a service can to recharge refrigerant if using the refrigerant gas collected with the freon collection/recycling device because the collective rate of the device is approximately 90%.

1. Keep the A/C switch on for at least 2 minutes to warm up the compressor.
   

   NOTICE:

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

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

2. Carry out the test under the following conditions:
   

   1. IG OFF
      
   2. Secure good ventilation (the gas leak detector may react to volatile gases which are not refrigerant, such as evaporated gasoline and exhaust gas).
      
   3. Repeat the test 2 or 3 times.
      
   4. Make sure that there is some refrigerant remaining in the refrigeration system.
      When the compressor is off: approx. 392 to 588 kPa (4 to 6 kgf/cm², 57 to 85 psi)
      

3. Using a gas leak detector, check for leakage of the refrigerant line.
   

4. Bring the gas leak detector close to the drain hose with the detector's power off.
   

   HINT:

   1. After the blower motor has stopped, let the cooling unit stand for more than 15 minutes.
      
   2. Bring the gas leak detector sensor under the drain hose.
      
   3. When bringing the gas leak detector close to the drain hose, make sure that the gas leak detector does not react to volatile gases.
      If such reaction is unavoidable, the vehicle must be lifted up.
      

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

6. Disconnect the pressure switch connector and leave it for approximately 20 minutes. Bring the gas leak detector close to the pressure switch and perform the test.
   

NOTICE:

Some systems need initialization when disconnecting the cable from the negative battery terminal. (Click here)