Audi Q5 2008 - Page 10

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Protective Eyewear
Put on protective goggles. They prevent refrigerant getting into
the eyes, as this could cause severe injury from exposure to cold.
Protective Gloves and Clothing
Greases and oils dissolve readily in refrigerants. They would
therefore destroy the protective layer of grease if allowed to come
into contact with the skin. Degreased skin is however sensitive to
the cold and germs.
Fluid Refrigerant and Skin Precaution
The refrigerant draws heat for evaporation from the surrounding
area. Even if this is the skin. This may cause extremely low tem‐
peratures. Local frost bite may result (boiling point of R134a:
-26.5° C at ambient pressure).
Refrigerant Vapor Precaution
If highly concentrated refrigerant vapor escapes, it mixes with the
surrounding air and displaces the oxygen necessary for breath‐
ing.
Smoking Hazard
A burning cigarette can cause refrigerant to decompose. The re‐
sultant substances are toxic and must not be inhaled.
Welding and Soldering on Refrigeration Systems
Before performing welding or soldering work on vehicles in the
vicinity of air conditioning system components, extract refrigerant
and remove remnants by blowing out with nitrogen.
The products of refrigerant decomposition due to the effect of heat
are not only toxic, but may also have a highly corrosive effect on
pipes and system components. They mainly take the form of hy‐
drogen fluoride.
Pungent Odor
A pungent odor indicates that the products of decomposition
mentioned above have already formed. Avoid inhaling these sub‐
stances under all circumstances, as otherwise the respiratory
system, lungs and other organs could be damaged.
First Aid
• Following contact with eyes or mucous membranes, immedi‐
ately rinse with copious amounts of running water and consult
an eye specialist.
• Following contact with the skin, immediately remove affected
clothing and rinse skin with copious amounts of water.
• Following inhalation of highly concentrated refrigerant vapors,
immediately take the affected person into the open air. Call a
doctor. Administer oxygen in the event of breathing difficulties.
If the affected person has difficulty breathing or cannot
breathe, tip head back and perform mouth to mouth respira‐
tion.
♦ Handling Pressure Vessels, refer to
⇒ “1.1.9 Handling Pressure Vessels“, page 9 .
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
6 Rep. Gr.00 - General, Technical Data