Saab 900 Service Manual page 43

Heating and ventilation system, aIr conditioning system
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Safety precautions
Before starting work on the AC system, read and
observe the following.
Always wear closely fitting protective goggles
when refrigerant is likely to escape or be re-
leased.
Always wear closely fitting protective goggles
when handling refrigerant and when refrigerant
is likely to escape or be released. Wear protec-
tive, gloves and cover all exposed skin as a pre-
caution against frostbite and similar injury.
If the skin should come into contact with the re-
frigerant, bathe the affected part with cold water
and treat as for frostbite.
In the event of refrigerant coming into contact
with the eye, bathe the eye with large quantities
of cold water from the tap, preferably for about
fifteen minutes.
If any discomfort remains, sight is impaired orvi-
sion misty, rush to a doctor or hospital.
Warning
If a refrigerant cylinder is heated, the pres-
sure inside the cylinder will increase, and
the cylinder may explode.
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Warning
Poisonous gases are formed if the refriger-
ant is heated. Such gases, if inhaled, can
do severe damage to the lungs.
When handling refrigerant, never allow open
flames, cigarettes, etc., in the area as poison-
ous gases will be produced if the refrigerant
comes into contact with a source of heat. In high
concentrations, such gases have a pungent
odour.
Note
Even in concentrations so low that no odour can
be detected, if inhaled, the gases can seriously
damage the lungs.
Symptoms can arise several hours after expo-
sure to the gases, in some cases as much as a
day later.
Saab 900