Instructions for opening and part exchange in refrigerant circuit
Required Special Tools:
- 00 9 030
- 32 1 270
WARNING:
- Avoid contact with refrigerant and refrigerant oil
- Follow Safety instructions for Handling Refrigerant. Refer to INSTRUCTIONS FOR HANDLING R1234YF REFRIGERANT , NOTE FOR HANDLING R134A REFRIGERANT , SAFETY INSTRUCTIONS FOR HANDLING REFRIGERANT R1234YF or SAFETY INSTRUCTIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A .
- Follow safety instructions for HANDLING REFRIGERANT OIL .
Attention!
- Always use new O-rings each time A/C connections are opened (refer to applicable BMW parts catalogue)
They must not be coated.
Use special tool 00 9 030 to install sealing rings without damaging them.
- Open the refrigerant circuit for as short of a period as possible.
- Close all components and lines in the refrigerant circuit and return parts immediately following the removals at openings with special tool 32 1 270 to prevent penetration of moisture or foreign objects.
- If the refrigerant circuit was closed at the openings with special tool 32 1 270 but it remains open for more than 24 h, the dryer insert for the air conditioning must be replaced.
- Part replacement as preliminary work fur further repair work and part replacement based on gradual leakage.
(minor leak, e.g. hairline crack)
Procedure:
- Suction Heating And Air Conditioning System. Refer to SUCTION, EVACUATING AND FILLING HEATING AND AIR CONDITIONING SYSTEM (R134A) or SUCTION, EVACUATING AND FILLING AIR CONDITIONING (R1234YF) , then determine suctioned coolant oil level
- Carry out part replacement
- Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
- Compressor: refer to NOTES ON COMPRESSOR REPLACEMENT .
- Evaporator: 10 ml
- Air conditioning condenser: 20 ml
- Desiccant insert/dryer flask: 20 ml
- Each replaced refrigerant line: 10 ml
- Air conditioning condenser with integrated dryer flask: 40 ml
- Safety pressure switch and gasket: no additional refrigerant oil
- Only I01: Radiator, high-voltage battery unit: 20 ml
- Evacuate and Fill Air Conditioning System. Refer to SUCTION, EVACUATING AND FILLING HEATING AND AIR CONDITIONING SYSTEM (R134A) or SUCTION, EVACUATING AND FILLING AIR CONDITIONING (R1234YF) .
- Part replacement due to sudden leakage
(major leak, e.g. pipe break due to accident)
Procedure:
- Suction Heating and Air Conditioning System. Refer to SUCTION, EVACUATING AND FILLING HEATING AND AIR CONDITIONING SYSTEM (R134A) or SUCTION, EVACUATING AND FILLING AIR CONDITIONING (R1234YF) , then determine suctioned coolant oil level
- Carry out part replacement
- Replace removed refrigerant oil and additionally top up with new refrigerant oil according to components replaced:
- Compressor: refer to NOTES ON COMPRESSOR REPLACEMENT .
- Evaporator: 35 ml
- Air conditioning condenser: 35 ml
- Desiccant insert/dryer flask: 55 ml
- Each replaced refrigerant line: 35 ml
- Air conditioning condenser with integrated dryer flask: 55 ml
- Safety pressure switch and gasket: no additional refrigerant oil
- Only I01: Radiator, high-voltage battery unit: 35 ml
- Evacuate And Fill A/C System. Refer to SUCTION, EVACUATING AND FILLING HEATING AND AIR CONDITIONING SYSTEM (R134A) or SUCTION, EVACUATING AND FILLING AIR CONDITIONING (R1234YF) .