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Converting refrigerant circuits from refrigerant R12 to refrigerant R134a > < Refrigerant circuit

A2

Important repair notes for air conditioning systems
Important repair notes for air conditioning systems
l  Air conditioners for refrigerant R12 may only be filled with refrigerant R134a if certain prerequisites are satisfied → Chapter and → Workshop Manual: Air conditioner with refrigerant R12 Part 2 and 3. This Workshop Manual is only available in hardcopy form.
l  The refrigerant oils specifically developed for R134a and R12 refrigerant circuits are never to be mixed.
l  Air conditioner service stations which come into contact with the refrigerant should only be used for the intended refrigerant.
l  The components of an R134a refrigerant circuit are accordingly labelled, marked with green stickers or designed (e.g. a different thread) such that interchange with components for refrigerant R12 is not possible.
l  The refrigerant being used is indicated by a label affixed to the lock carrier in the engine compartment or in the plenum chamber.
l  Never mix various refrigerants.
  Note
When working on the refrigerant circuit, always pay attention the information given in the Sections on „Safety measures“ → Chapter and „Basic rules for working on refrigerant circuit“ → Chapter.
   

Converting refrigerant circuits from refrigerant R12 to refrigerant R134a > < Refrigerant circuit