Warning For Handling Refrigerant
WARNING:
Refrigerant
- Danger of freezing
→ Avoid contact with refrigerant.
→ Wear personal protective gear.
→ Observe the safety regulations for working on air-conditioned vehicles and handling refrigerant.
→ Observe the safety regulations for extraction and filling systems.
→ Observe the instructions for repairing air-conditioning systems and storing spare parts.
Information
The refrigerant circuit must be flushed with refrigerant if:
- There is dirt or other impurities in the refrigerant circuit.
- When evacuating a leak-tight refrigerant circuit, the vacuum gauge does not maintain a constant vacuum (there is moisture in the refrigerant circuit and this builds up pressure).
- The refrigerant circuit was open for longer than the normal assembly time (e.g. after an accident).
- Pressure and temperature measurements in the refrigerant circuit indicate that there is moisture in the refrigerant circuit.
- The air-conditioning compressor had to be replaced due to internal damage (e.g. noises or not working).
- A different air-conditioning compressor with different refrigerant oil has to be installed.
- There are granules in the refrigerant circuit due to a faulty desiccator.
The refrigerant circuit must not be flushed with refrigerant if:
- there is contaminated refrigerant in the refrigerant circuit. We recommend that you replace all components.
Information
- For model year 2017, the refrigerant R1234yf and refrigerant oil SP-A2 are used in the Boxster and Cayman.
- Only the refrigerant oil SP-A2 can be used for the refrigerant R1234yf.
- The refrigerant R134a is also available for certain markets and only the refrigerant oil SP-A2 can be used for this as well.
- The allocation of refrigerant to the vehicle is controlled using the additional equipment number (M-number) and the allocation of refrigerant and the refrigerant quantity can also be found on the sticker on the luggage compartment lid close to the charging valves.
- A separate measuring cylinder must be used for measuring the oil quantity for each different type of refrigerant oil or the measuring cylinder must be cleaned after using it for a different type of refrigerant oil.
- Always read the relevant safety data sheet for handling refrigerant R134a and R1234yf.
Information
- On vehicles with two evaporators, the circuit for the second evaporator must be separated from the circuit for the first evaporator and flushed in a separate step.
Information
- The components (with the exception of the electric air-conditioning compressor) must always be flushed against the direction of flow of refrigerant in the air conditioning system.
- The filter in the flushing device for refrigerant circuits must be changed after 5 to 10 flushing cycles (flushed vehicles), depending on the type and extent of contamination of the flushed refrigerant circuits. If a highly contaminated refrigerant circuit is flushed (the refrigerant machine oil from the refrigerant circuit is black and viscous or there are a lot of chips in the refrigerant circuit), the filter must be changed after flushing this refrigerant circuit. If a refrigerant circuit is highly contaminated like this, it is also a good idea to flush the refrigerant circuit again after changing the filter.