Volkswagen Golf 1999 Service Manual page 3984

General information for A/C system
head at neck and administer artificial respiration.
Pressure vessels, handling
- Secure vessels to prevent them falling over.
Secure upright cylinders to stop them falling over and
cylinders lying flat to stop them rolling away.
- Do not throw vessels!
If dropped, the vessels could be so severely deformed that
they rupture. The refrigerant evaporates immediately,
liberating considerable force. Flying fragments of cylinders
can cause severe injuries.
Valves may break off if cylinders are not properly
transported. To protect the valves, cylinders are only to be
transported with protective cap screwed on.
- Never store in the vicinity of radiators.
High temperatures may occur next to radiators. High
temperatures are also accompanied by high pressures and
the maximum permissible vessel pressure may be
exceeded.
Do not heat above 50
To avoid possible risk, pressure vessel regulations specify
that vessels are not to be heated to in excess of 50
Do not heat in an uncontrolled manner
Do not heat with a naked flame under any circumstances.
Localized 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 localized overheating.
Seal empty vessels
Empty refrigerant vessels must always be sealed to
prevent the ingress of moisture. Moisture causes corrosion
of steel vessels. This weakens the vessel walls. In addition,
rust particles penetrating into refrigeration systems from
vessels will cause malfunctioning.
Safety regulations for working with extraction
and charging systems
- Make sure the shut-off valves are closed before
connecting the charging system to the air conditioning
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13/2/2005