Leaking Or Damaged Components, Replacing, Filled Refrigerant Circuit Except A/C Compressor And Receiver/Dryer

Special tools and workshop equipment required 

• Digital Scale:VAS 231 007  or commercially available

  Courtesy of AUDI OF AMERICA, LLC

• Refrigerant circuit still contains refrigerant (for example, with minor leak)

Procedure 

-- Discharge the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, DISCHARGING .

Evaporator, Replacing

-- Remove the evaporator. Refer to EVAPORATOR, REMOVING AND INSTALLING .

-- Dry the evaporator. For this, remove possible condensation water in the evaporator slats by shacking and by draining with compressed air.

-- Determine the weight of the old, dry evaporator using the Digital Scale:VAS 231 007  .

-- Determine the weight of the new evaporator using the Digital Scale:VAS 231 007  .

-- Determine the amount of refrigerant oil in the old evaporator by comparing weights.

-- Add the amount of refrigerant oil which needs to be added when charging the refrigerant circuit.

Condenser, Replacing

-- Replace the condenser. Refer to CONDENSER, REMOVING AND INSTALLING .

-- Make up for the amount of refrigerant oil already in the old condenser. To do this, add 10 ml of refrigerant oil when charging the refrigerant circuit.

Heat Exchanger, Replacing (for example: High-Voltage Battery Heat Exchanger, Heat Condenser)

-- In addition, add 10 ml of fresh refrigerant oil per component when charging.

Refrigerant lines, replacing

-- Remove the refrigerant line and collect leaking refrigerant oil.

-- When charging the refrigerant circuit, add the collected amount of refrigerant oil. For line sections of more than 50 cm add an additional 5 ml refrigerant oil.

Other components, replacing

-- Remove and replace the faulty component. Refer to Refrigerant Circuit .

Continuation for all components

-- Charge the refrigerant circuit and at the same time add the necessary amount of refrigerant oil. Refer to REFRIGERANT CIRCUIT, CHARGING .