VW Polo manuals

Volkswagen Polo Service & Repair Manual: 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 compressed air and 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 affected clothing and rinse skin with copious amounts of water.
Following inhalation of highly concentrated refrigerant vapors, immediately take the affected person into the open air. Call a doctor. Administer oxygen in the event of breathing difficulties. If the affected person has difficulty breathing or cannot breathe, tip head back and perform mouth to mouth respiration.
   
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 ...

Handling Pressure Vessels
Secure vessels to prevent them falling over! Secure upright cylinders to stop them falling over and cylinders lying flat to stop them rolling away. ...

Other materials:

Searching for Refrigerant Circuit Leaks with Compressed Air or Nitrogen
  Note This repair manual describes different methods for detecting leaks in the refrigerant circuit. These methods have been tested and result in success when used correctly. If when searching for compressed air / Nit ...

Tires, Dismounting, Wheels without and with Tire Pressure Monitoring System
If equipped check the tire pressure monitoring sensor with the vehicle diagnostic tester and if necessary replace.   Note When cleaning disc wheel (rim), the tire pressure monitoring sensor (if equipped) must not come into c ...

Tires, Damage from Low Tire Pressure
The most common causes of failure are small external damage, a defective valve or a leaky rim due to corrosion or damage.     Separation of Carcass and Rubber Strong heating due to driving w ...

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