Volkswagen Polo Service & Repair Manual: Welding and Soldering on Refrigeration Systems

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

Two-Part Fine Filling Paste
Definition: Two-Part Fine Filling Paste -LSP 784 002 A2- Edition 06/2011 Product Description The two-part fine filling paste is a very fine thixotropic polyester filling past ...

General information on transporting children in the vehicle
First read and observe the introductory information and safety warnings Legislation and legal requirements take precedence over the descriptions in this owner's manual. Various standards and regulations govern the use of child seats and methods for securing them (). For example, this could me ...

Driving with an open tailgate
First read and observe the introductory information and safety warnings Driving with an open tailgate is particularly dangerous. Ensure that the open tailgate and any objects are secured properly, and take appropriate measures to reduce the quantity of toxic exhaust fumes entering the vehicle ...