A3 Quattro V6-3.2L (BUB) (2008)
Refrigerant: Description and Operation
Refrigerant R134a
Refrigerant R134a and refrigerant oil capacities A/C System with Refrigerant R134a.
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Bleed, evacuate and fill the refrigerant circuit. Refer to A/C System with Refrigerant R134a.
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Operate the A/C system after filling the refrigerant circuit. Refer to=> [ A/C System, Operating after Filling Refrigerant Circuit ] See: Heating and
Air Conditioning/Service and Repair/Procedures/A/C System, Operating after Filling Refrigerant Circuit.
‹› Depending on time period of production and on engine, compressor construction type may vary.
‹› At the beginning of production, A/C compressor was manufactured by " Denso" (type "7 SEU 16" or "7 SEU 17") were installed; from MY 2004
A/C compressors by other manufacturers ("Delphi ", "Sanden" or "Zexel") may also be installed. A/C System with Refrigerant R134a
‹› Beginning the production year 2006, the name of the "Zexel" A/C compressor was changed from "Zexel" to "Valeo".
‹› Depending on the type of A/C compressor (for example "Denso" Type" 6 SEU 14", "7 SEU 16" or "7 SEU 17") there are different refrigerant
capacities for the refrigerant circuit A/C System with Refrigerant R134a
‹› Compressor as replacement part has different oil fill capacities, therefore note the exact part number Refrigerant R134a - Servicing. The reason for
the different oil capacities in the compressor is the design of the compressor itself, note these oil capacities. Too much oil in the circuit leads to
higher pressures and reduces cooling performance of the system. Too little oil may lead to lubrication problems in the compressor.
‹› Always fill refrigerant circuit as far as upper tolerance limit (some refrigerant remains in filler hoses).
‹› Refrigerant circuit may only be filled with approved refrigerant oils.
‹› Zexel / Valeo, Sanden and Denso A/C compressors require different refrigerant oils: Refrigerant R134a - Servicing
‹› Use only the specified oil from a sealed container and always reseal oil container immediately after use (PAG oil absorbs moisture). Do not use oil
if it is contaminated with moisture or if oil container has been left open.
‹› Additional information Refrigerant R134a - Servicing