Audi Q5 2008 - Page 144

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
• Restrictor
• Reservoir
• Two condensers switched in sequence
• Denso A/C compressors with an A/C compressor regulator
valve -N280- , refer to ⇒ Heating, Ventilation and Air Condi‐
tioning; Rep. Gr. 87 ; Description and Operation (vehicle-
specific repair manual) and to the Electronic Parts Catalog.
Vehicle model Production
period
Total quantity of oil in
refrigerant circuit in
cm
3
Quantity of refrigerant
oil in replacement
compressor in cm
3
Differing features of this
refrigerant circuit
Audi R8 As of 03.07
150
+
/
-
10 150
+
/
-
10
A/C compressor 7 SEU
17
Note
♦ The replacement compressor contains the full quantity of oil
intended for the refrigerant circuit. On A/C compressor re‐
placement, the quantity of oil in the A/C compressor is there‐
fore to be adjusted. Refer to
⇒ “5 Removal and Installation“, page 191 .
♦ These A/C compressors are available as replacement parts
with different oil fill capacities, therefore note capacity on the
A/C compressor and the exact part number. Refer to the Elec‐
tronic Parts Catalog.
♦ The reason for the different oil capacities inside the A/C com‐
pressor is due to the design of the A/C compressor (with or
with an oil separator on the high pressure connection) or to the
design of the refrigerant circuit if the A/C compressors are
have the identical design. Pay attention to the different ca‐
pacities. 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.
♦ Too much oil in the circuit leads to higher pressures and re‐
duces cooling performance of the A/C system. Too little oil
may lead to lubrication problems in the compressor, therefore
note the specified refrigerant oil quantities.
♦ A data plate may be attached to the A/C compressor by the
manufacturer, indicating the part number and refrigerant oil
quantity.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
140 Rep. Gr.00 - General, Technical Data