Volkswagen Golf Quiz
Air conditioning system with refrigerant R134a

Welding and soldering on refrigeration systems

In this manual: Air conditioning system with refrigerant R134a
General body repairs, exterior — 230General body repairs, interior — 279General information, paint — 133Vechile- specific paint information — 27Heating, air conditioning — 156Auxiliary heater — 58Air conditioning system with refrigerant R134a — 1297- speed dual clutch gearbox 0CW — 544- cylinder injection engine(1.4 1 direct inction. turbocharger) — 182Fuel supply system - Petrol engines — 59Running gear, axles, steering — 221Brake system — 92Wheels and Tyres guide — 12Guide for using trailers — 11Wheels and Tyres Guide - General Information — 121Brake system (hybrid) — 73Electrical system — 326Communication — 65Electrical system, general information — 111
~1min read

Before welding and brazing on vehicles (in the vicinity of the air conditioning system components), extract the refrigerant and then purge the system by blowing through with compressed air and using nitrogen. The products of decomposition of refrigerants under heat are not only poisonous but are strongly corrosive, so that pipework and system parts could be attacked. This refers primarily to hydrogen fluoride.

Pungent smell

A pungent odour indicates that the products of decomposition mentioned above are already present. Breathing in these substances must be avoided under all circumstances, or the bronchial tubes, lungs and other organs could be injured.

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