VW Polo manuals

Volkswagen Polo Service & Repair Manual: 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:

Contact Housings, Repairing Wire Terminals
  Note     For technical reasons, the contact housing for the wire terminals can be supplied only with the contacts pushed in. These contacts can be removed at every other contact housing ...

Smooth Tube, Repairing
A new repair concept has been developed for repairing washer system hoses. Various individual hose connectors, adapters, Ethylene Propylene Diene Methylene (EPDM) rubber hoses and shrink tubing will be offered as replacement parts. Smoot ...

Fuses in the vehicle
Fig. 172 Dash panel on the driver side: fuse box cover Fig. 173 In the front left of the engine compartment: fuse box cover First read and observe the introductory information and safety warnings Fuses must always be replaced by a new fuse with the same amp rating (same colour and marki ...

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