03 Safety Regulations When Handling Refrigerant R134A - Porsche 996 TT Repair Manual

87 03 Safety regulations when handling refrigerant
R134a
The refrigerant R 134a which is used is known as a safety refrigerant. This means that this refrigerant is
non−flammable, non−explosive, non−toxic, non−irritating, odorless and tasteless. Despite this, you should
still follow the points below:
WARNING
Danger of injury as a result of contact with liquid or gaseous refrigerants!
• Wear rubber gloves to protect your hands!
• Treat affected skin in the same way as in the case of freezing. Rinse immediately with cold water and
then consult a physician!
• Wear safety goggles to protect your eyes!
If refrigerant still gets in your eyes, consult a physician immediately!
•
CAUTION
Danger of fire due to the air−conditioning system heating up from sunlight shining into the vehicle or during
welding and soldering work!
• When carrying out repairs on the air−conditioning system, the system must be emptied by suction and
the refrigerant must be purified. Chlorine−free refrigerants must also not be allowed to escape into the
atmosphere and must be disposed of correctly!
• Due to their chemical composition, different refrigerants must not be mixed with each other! This also
applies for smaller quantities!
• No welding, soldering or hot−air heating may take place on parts of the filled air−conditioning system
or in its immediate vicinity!
• Make sure that parts of the air−conditioning system do not heat up during welding or soldering work
on the vehicle!
• While drying after painting work, the temperature burden on the vehicle must not exceed two hours at
a maximum temperature of 80°C!
Whether or not the system is filled with refrigerant, the heating causes a very strong overpressure
•
which can cause damage to the system or even lead to an explosion!
• R 134a is completely non−toxic at normal temperatures, but it decomposes upon contact with a flame
or at high temperatures!
• Refrigerant bottles must not be thrown and must not be subjected to direct sunlight or other heat
sources for an extended period when full!
• The maximum permissible temperature of a filled refrigerant bottle must not exceed 45 °C!
996420, 996421, 996450, 996451, 996620, 996621, 996650, 996651, 996840, 996841

87 03 Safety regulations when handling refrigerant R134a

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