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Volkswagen Golf Mk7 Service & Repair Manual: Clearing refrigerant circuit of contaminants

This section covers clearing contaminants from the Volkswagen Golf Mk7 refrigerant circuit: blowing through with compressed air/nitrogen, and purging (cleaning) with R134a refrigerant itself.

Questions & answers

Clearing refrigerant circuit of contaminants — Volkswagen Golf Mk7

What purging methods does the Golf Mk7 AC manual describe?
Blowing with compressed air/nitrogen, and purging (flushing) with R134a refrigerant — including circuit diagrams for various purging configurations.
Detecting leaks in refrigerant circuit using leak detecting system -VAS 6196- or leak detecting system -VAS 6201- or a later model
  Note Small leaks can be detected with, for example, an UV leak detector additive. –  Evacuate refrigerant circuit using a ...

Blowing through refrigerant circuit with compressed air and nitrogen
Use compressed air to force moisture and other contaminants out of the refrigerant circuit and use nitrogen to force moisture out of the refrigerant circuit. ...