Volkswagen Golf Quiz
Air conditioning system with refrigerant R134a

Water content

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

Only very small amounts of water are soluble in liquid refrigerant. On the other hand, refrigerant vapour and water vapour mix in any proportion. Any water present in the refrigerant circuit will be carried along as droplets. The dessicant, dessicant bag or dessicant cartridge in the receiver or reservoir are capable of holding approx. 7 grams of water before they are full and cannot absorb any more water. If there is further water in the circuit, it will flow to the expansion valve jet or to the restrictor and becomes ice.

The air conditioning system will stop cooling.

Water destroys the air conditioner because at high pressures and temperatures it combines with other impurities to form acids.

Combustibility

Refrigerant is non-flammable. On the contrary, it has a fire-inhibiting or fire-extinguishing effect. Refrigerant decomposes when exposed to flames or incandescent surfaces. UV light can also decompose refrigerants (UV is emitted by electric arc welding). Products of this decomposition are poisonous and must not be inhaled. However, these chemicals irritate the mucous membranes, giving adequate warning of their presence.

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