Risk of fire from igniting refrigerant R1234Yf on components. Risk of poisoning through inhalation of superheated refrigerant vapor. Risk of injury when skin and eyes come into contact with the released refrigerant R1234Yf and when working with pressurized parts. Risk of explosion due to the formation of flammable cold medium-air mixtures - AS83.00-Z-0007-01A

Model all (GW, Leichte Transporter, PKW, smart) 

Possible dangers 

Do not carry out welding work on or in the vicinity of the closed air conditioning system. Smoking and open fire are prohibited. Wear protective goggles and protective gloves, only work in well-ventilated rooms. Only carry out repair work on the air conditioning circuit when the system is empty.

Fire hazard 

The refrigerant is highly flammable and in certain proportions it is combustible with the air. In the event of a fire, hazardous decomposition products.

Hydrogen fluoride, carboxylic acid halides, carbon monoxide (CO) and carbon dioxide (CO2) are formed and released.

Risk of explosion 

Flammable mixtures can form in connection with refrigerant vapors.

Risk of poisoning 

The refrigerant can decompose if overheated. The resulting substances are poisonous and must not be inhaled. Avoid skin contact.

Choking hazard 

At high concentrations of R1234yf there is a risk of suffocation.

risk of injury 

There is compressed refrigerant in the lines and components of the air conditioning system. Despite an empty air conditioning system, excess pressure may still be present when the plug-in couplings of the air conditioning system are loosened.

When the air conditioning system is closed (filled or deflated), the heating creates a large overpressure which can lead to bursting.

That's why Welding Or soldering work  on and around the closed air conditioning system is strictly prohibited.

There is a risk of skin and eye injuries from contact with the released cold agent (frostbite / icing). In the event of improper work on the refrigerant circuit, a mechanical hazard can arise from pressurized parts.

Contact with liquid refrigerant can cause frostbite-like damage to the skin (due to hypothermia).

Health hazard 

Health hazard from inhaling cold agent vapors or swallowing liquid cold agent.

Rules of conduct / protective measures 

• Only work on air conditioning systems with a certificate of expertise.
• On and around the closed air conditioning system Welding Or soldering work  generally prohibited.
• Smoking and naked flames are prohibited when handling refrigerants! Keep away from sources of ignition.
• Avoid any contact with liquid refrigerant.
• Do not inhale refrigerant vapor. In the event of a release, ensure adequate ventilation of the work area. Not to be used near pits and cavities.
• When working with refrigerants, it is essential to wear protective goggles with side protection and protective gloves. The arms must be covered by work clothes.
• Change contaminated clothing immediately.
• Open radiant heating may not be operated.
• Refrigerant stocks must be stored properly.
• In front Repair work  In principle, the refrigerant must be extracted from the entire system on the circuit and on the components of the air conditioning system.
• Discharging the refrigerant into the environment is prohibited in order to protect workshop personnel and the environment.
• The refrigerant may only be extracted using suitable extraction, processing and filling devices that have their own disposal / processing facility.
• Despite the system being empty, excess pressure may still exist when the plug-in couplings of the air conditioning system are loosened. Therefore, carefully loosen the plug-in couplings so that the pressure can slowly decrease.

First aid measures 

After eye contact:

• With the eyelid wide open, rinse thoroughly with running water for at least 10 minutes, consult a doctor immediately.

  After skin contact:

• Thaw body parts that have been frozen by cold liquid with water, then carefully remove items of clothing. Rinse with plenty of water.

  Seek medical treatment. Change soiled, soaked clothing.

  After inhalation:

• If there is a higher concentration of cold medium vapors, immediately bring the person concerned out into the fresh air and keep them quiet.
• If the person is unconscious, lay and transport the person in a stable position on their side. If breathing has stopped, bend your head back and give artificial respiration. Call a doctor.

  After swallowing:

• Rinse mouth thoroughly with water and consult a doctor immediately.