General Safety - Volkswagen Amarok 2011 Workshop Manual

Amarok 2011 ➤ , Beetle 2012 ➤ , Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ , ...
Air conditioning system with refrigerant R134a - Edition 10.2014
ditioner compressor on the refrigerant increases its heat content
and its temperature. Its temperature is now considerably higher
than that of the ambient air.
The hot refrigerant flows with its heat content to the condenser.
There the refrigerant looses its heat through the condenser to the
surrounding air due to the temperature gradient between the re‐
frigerant and the surrounding air.
Thus, the refrigerant is a means of heat transport. Because it will
be needed again, it returns to the evaporator.
All air conditioning systems basically depend on the circulation of
refrigerant. However, there are differences in the construction of
the system.
1.10

General safety

♦ In accordance with VBG 20, the Federation of Employers Li‐
ability Insurance Associations.
♦ Observe instructions specific to the workplace; ⇒ Volkswagen
ServiceNet; Handbooks; Service handbook; Environmental
protection . Refrigerant from air conditioning systems / refrig‐
erant oils - to be displayed at refrigerant designated working
area.
1.10.1 Product characteristics
Refrigerants used in car air conditioning systems belong to the
new generation of refrigerants, the chlorine-free, partially-fluori‐
dated hydrocarbons (H-CFC, R134a).
In regard to their physical behaviour, they are refrigerants which
can be liquefied under pressure. They are subject to Regulations
for Pressure Tanks and may be charged only into approved and
identified pressurised gas containers.
Specific conditions which apply for safe and proper use must be
maintained.
1.10.2 Handling refrigerants
WARNING
Danger of freezing injuries.
The refrigerant can emerge as liquid or as vapour.
Do not open containers in which this refrigerant is present.
If refrigerant containers are opened, the contents may escape in
liquid or vapour form. The higher the pressure in the container,
the more energetic the emergence will be.
How high the pressure is depends on two factors:
• What type of refrigerant is in the container. "This is because
the lower the boiling point, the higher the pressure."
• How high the temperature is. "This is because the higher the
temperature, the higher the pressure."
1.10.3 Wear protective glasses
Put on protective glasses. This will prevent the refrigerant enter‐
ing the eyes, which in certain circumstances can cause severe
injury due to frostbite.
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Rep. gr.00 - Technical data