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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 40 (REFRIGERANT R134A - SERVICING)87 - AIR CONDITIONINGREFRIGERANT CIRCUITREFRIGERANT CIRCUIT, FLUSHING WITH COMPRESSED AIR AND NITROGENNOTES
2009 Audi A6 Base

Refrigerant Circuit, Flushing with Compressed Air and Nitrogen: Notes

2009 Audi A6 BaseSECTION Notes
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Refrigerant circuit must be flushed with refrigerant R134a or blown through with compressed air and nitrogen in order to remove moisture and other contaminants as well as old refrigerant oil as efficiently as possible, without wasting refrigerant, without the need for extensive assembly work and without endangering the environment.

NOTE:
  • Blowing through the refrigerant circuit with compressed air or nitrogen mostly requires a significantly higher amount of work than flushing with refrigerant R134a. As flushing with refrigerant R134a cleans the components more efficiently, always flush in case of a complaint (blowing through should only be used for certain complaints and individual components).
  • Under certain circumstances, it may be sufficient to blow through certain components (e.g. individual refrigerant lines or hoses) with compressed air or nitrogen (e.g. for pressing out old refrigerant oil of individual removed components).
  • Certain impurities cannot or can only insufficiently be removed from the refrigerant circuit using compressed air, these impurities can be removed by e.g. flushing with refrigerant R134a → Refrigerant Circuit, Flushing with Refrigerant R134a 
  • When blowing through, the maximum work pressure of 15 bar must not be exceeded (corresponding to pressure that is reached in a filled refrigerant circuit with an ambient temperature of approx. 60 C, if necessary use pressure reducer also for compressed air)
RENDER: 1.0x

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