BC Transit – Air Brake Course

Air Dryers, Alcohol Evaporators & Alcohol Injectors
Air dryers are optional devices that are installed in the compressor discharge line between the compressor and the first
reservoir. They are designed to remove any water vapour, oil mist and carbon particles from the air before it is
delivered to the first reservoir.
Alcohol evaporators and alcohol injectors are optional devices that introduce a small amount of alcohol vapour into
the air system – in effect, they lower the freezing point of any moisture that has collected in the air system.
Front
Rear
Reservoir air
Air Dryer
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