Audi Q5 2008 - Page 14

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To protect the valves, cylinders are only to be transported with
protective cap screwed on.
Valves may break off if cylinders are not properly transported.
Never store in the vicinity of radiators.
High temperatures may occur next to radiators. High tempera‐
tures are also accompanied by high pressures and the maximum
permissible vessel pressure may be exceeded.
Temperature Warning
To avoid possible risk, pressure vessel regulations specify that
vessels are not to be heated to in excess of 50° C.
Heating Warning
Do not heat with a naked flame under any circumstances. Local‐
ized overheating can cause structural changes in the vessel
material, which then reduce its ability to withstand pressure.
There is also a danger of refrigerant decomposition due to local‐
ized overheating.
Empty Containers
Empty refrigerant vessels must always be sealed to prevent the
ingress of moisture. Moisture causes steel vessels to corrode.
This weakens the vessel walls. In addition, rust particles entering
into refrigeration systems from vessels will cause malfunctioning.
1.1.10 Service and Recycling Units
At this time, service units for extracting, cleaning and filling re‐
frigerant for motor vehicle A/C systems are available on the
market from various manufacturers.
Certain service stations (with appropriate auxiliary device and dif‐
ferent adapters if necessary) can also be used for flushing the
refrigerant circuit. Refer to
⇒ “1.4.13 Refrigerant Circuit Flushing With Refrigerant R134a“,
page 32 .
♦ Extraction System Group Classifications, refer to
⇒ “1.2.3 Extraction System Group Classifications“,
page 16 .
♦ Charging Systems not Requiring a Permit, refer to
⇒ “1.2.2 Charging Systems Not Requiring a Permit“,
page 15 .
1.1.11 Vehicles with A/C Compressor Without
A/C Clutch, Only with A/C Compressor
Regulator Valve
• The engine can be started only after the refrigerant circuit has
been completely assembled (the A/C compressor runs con‐
tinuously).
• If the engine has to be operated with the refrigerant circuit
empty, only do so for as long as absolutely essential and avoid
high engine speeds.
1.1.12 Repairing A/C System
• Air conditioning systems designed for refrigerant R12 are only
to be filled with refrigerant R134a if certain requirements are
fulfilled. Refer to
⇒ “1.2.4 Refrigerant Circuit, Converting R12 to R134a and
Servicing“, page 17 and Repair manual: Air conditioner with
R12 Parts 2 and 3. This repair manual is only available in hard
copy.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
10 Rep. Gr.00 - General, Technical Data