VW Polo manuals

Volkswagen Polo Service & Repair Manual: Water Content

Only very small amounts of water are soluble in liquid refrigerant. On the other hand, refrigerant vapor and water vapor mix in any ratio.
Only a small drop of water may get into the refrigerant circuit. The dryer, dryer bag or dryer cartridge contained in the reservoir can absorb approximately 7 grams of water. They are then saturated and cannot absorb any more water. If water is still present in the refrigerant circuit, it flows up to the expansion valve nozzle or restrictor and becomes ice.
The air conditioning system stops cooling.
Water destroys the air conditioner as it combines with other impurities at high pressures and temperatures to form acids.
   

Combustibility

Refrigerant is non-flammable. It actually has a fire resistant or fire extinguishing effect. Refrigerant decomposes when exposed to flames or red-hot surfaces. UV light (occurring for example during electric welding) also causes refrigerant decomposition. The resultant decomposition products are toxic and are not to be inhaled. However, irritation of the mucous membranes provides an adequate and timely warning.

Commercial Names and Designations
Refrigerant R134a is currently available under the following trade names: H-FKW 134a SUVA 134a ...

Charge Factor
A vessel must have space for vapor as well as liquid. As the temperature rises, the liquid expands. The space filled with vapor decreases. At a certain point, there w ...

Other materials:

Snow chains
First read and observe the introductory information and safety warningsPlease heed legislation and also the permitted speed when driving your vehicle with snow chains. In winter conditions, snow chains will not only improve acceleration, but also braking response. Snow chains may be fitted ...

Introduction
This chapter contains information on the following subjects:  → Notes on tow-starting  → Notes on towing  → Fitting the front towing eye  → Rear towing eye  → Driving tips when towing Comply with any legal requirements when towing and tow starting. For t ...

Recycling and scrapping end-of-life vehicles
First read and observe the introductory information and safety warningsRecycling end-of-life vehicles Volkswagen has already made provision for you to recycle your vehicle in an environmentally responsible manner. The recycling system operating in many European countries will take back your v ...

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