audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Additionally for vehicles with air conditioner compressor with no magnetic clutch (with air conditioner compressor regulating va > < General notes
Cleaning refrigerant circuit
Cleaning refrigerant circuit
The refrigerant circuit must be flushed out with refrigerant R134a → Chapter (or blown out with compressed air and nitrogen → Chapter) in the following cases:
–  If moisture or dirt has entered the refrigerant circuit (e.g. following an accident)
–  If the refrigerant oil is dark and viscous
–  If there is too much refrigerant oil in the refrigerant circuit after renewing compressor
–  If the air conditioner compressor has to be renewed due to „internal“ damage (e.g. noise or no output)
  Note
When blowing out components with compressed air and nitrogen, always extract the gas mixture escaping from the components with suitable extraction units (workshop extraction system).
   

Additionally for vehicles with air conditioner compressor with no magnetic clutch (with air conditioner compressor regulating va > < General notes