Volkswagen Polo Service & Repair Manual: Product Characteristics

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / A/C System, General Information / Safety Precautions / Product Characteristics

Refrigerants used in motor vehicle air conditioning systems belong to the new generation of refrigerants based on chlorine-free, partially fluorinated hydrocarbons (H-FKW, R134a).

With regard to their physical properties, these are refrigerants which have been liquefied under pressure. They are subject to the regulations governing pressure vessels and use is only to be made of approved and appropriately marked containers.

Compliance with specific conditions is required to ensure safe and proper use.

Handling Refrigerant

WARNING

There is a danger of ice-up.

The refrigerant can then escape as a fluid or vapor.

Do not open containers which store refrigerant.

If refrigerant vessels are opened, the contents may escape in liquid or vapor form. This process is intensified the higher the pressure in the vessel.

The pressure level is governed by two factors:

The type of refrigerant in the vessel. “The lower the boiling point, the higher the pressure.”

The temperature level. “The higher the temperature, the higher the pressure.”

Protective Eyewear

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

Protective Gloves and Clothing

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.

Fluid Refrigerant and Skin Precaution

The refrigerant draws heat for evaporation from the surrounding area. Even if this is the skin. This may cause extremely low temperatures. Local frost bite may result (boiling point of R134a: -26.5 °C (-15.7 °F) at ambient pressure).

Do Not Breath In Refrigerant Vapor

Note

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

Smoking Hazard

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

Safety Precautions

General Safety Precautions As per VBG 20, German industrial liability insurance association. Follow th ...

Welding and Soldering on Refrigeration Systems

Before performing welding or soldering work on vehicles near the air conditioning system components, extract the refrigerant and remove the residue by flushing with c ...

Other materials:

Two-Part HS Clear Coat
Definition: Two-Part HS Clear Coat -L2K 769 500 A5- Edition 10/2012 Product Description Two-part HS clear coat is a VOC compliant, high-quality high solid clear coat. ...

One-Part Clean Spray Can -LLS MAX 099-, -LLS MAX 100-, Aquaplus System
Definition: One-Part Clean Spray Can -LLS MAX 099-, 250 ml for Water-Based Mixed Paint “Aquaplus System” One-Part Clean Spray Can -LLS MAX 100-, 400 ml for Water-Based Mixed Paint “Aquaplus System” ...

Warning lamp
First read and observe the introductory information and safety warnings Lit up Possible cause Solution Fault in the alternator. Go to a qualified workshop. The electrical system should be checked. Switch off all electrical ...