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:

Restrictor
  Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the system. Only use tools and materials approved by the manufactu ...

Introduction
This chapter contains information on the following subjects:  → Warning lamp  → Opening the tailgate  → Closing the tailgate Additional information and warnings: Exterior views Central locking system Transporting items Manual opening and closing ...

Joint-Free Wiper Blade Characteristics
Characteristics for Bosch and Federal Mogul Check the manufacturer when replacing the wiper blades. Always replace them with blades made by the same manufacturer. The wiper blades can be identified by the wiper arm mount. ...

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