Refrigerant, Handling

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If refrigerant vessels are opened, the contents may escape in liquid or vapor form. The higher the pressure in the vessel, the more vigorous the process.

The pressure level is governed by two factors:

The type of refrigerant in the vessel. "Rule: The lower the boiling point, the higher the pressure"

The temperature level. "Rule: The higher the temperature, the higher the pressure"

CAUTION:

Do not open vessels containing refrigerant.

Wear safety goggles

Put on safety goggles to prevent refrigerant getting into the eyes, as this could cause severe injury from exposure to cold.

Wear protective gloves and apron

Greases and oils dissolve readily in refrigerants. They would therefore destroy the protective layer of grease if allowed to come into contact with the skin. Degreased skin is however sensitive to the cold and germs.

Do not allow liquid refrigerant to come into contact with the skin

The refrigerant draws heat for evaporation from the surrounding area - even if this is the skin. This may give rise to extremely low temperatures and result in local frostbite (boiling point of R134a: -26.5 C at ambient pressure).

Do not inhale refrigerant vapors

If highly concentrated refrigerant vapor escapes, it mixes with the surrounding air and displaces the oxygen necessary for breathing.

Smoking is absolutely prohibited

A burning cigarette can cause refrigerant to decompose. The resultant substances are toxic and must not be inhaled.

Welding and soldering on refrigeration systems

Before performing welding or soldering work on vehicles in the vicinity of air conditioning system components, extract refrigerant and remove remnants by blowing out with nitrogen.

The products of refrigerant decomposition due to the effect of heat are not only toxic, but may also have a highly corrosive effect on pipes and system components. They mainly take the form of hydrogen fluoride.

Pungent odor

A pungent odor indicates that the products of decomposition mentioned above have already formed. Avoid inhaling these substances under all circumstances, as otherwise the respiratory system, lungs and other organs could be damaged.

First aid

Following contact with eyes or mucous membranes, immediately rinse with copious amounts of running water and consult an eye specialist.

Following contact with the skin, immediately remove clothing affected and rinse skin with copious amounts of water.

Following inhalation of highly concentrated refrigerant vapors, person concerned is to be taken immediately into the open air. Call a doctor. Administer oxygen in the event of breathing difficulties. If the person affected is having great difficulty breathing or is not breathing at all, tilt back head and administer artificial respiration.