Practice question

What is the function of the air dryer cartridge (dessiccateur d'air) in a heavy vehicle pneumatic braking circuit?

Removes moisture and oil vapor from compressed air before it enters the air reservoirs, preventing freezing, valve corrosion, and brake deterioration
Heats the cabin air for passenger comfort
Dries wet asphalt roads ahead of the front tyres
Removes water from diesel fuel inside the fuel tank

Answer: A — Removes moisture and oil vapor from compressed air before it enters the air reservoirs, preventing freezing, valve corrosion, and brake deterioration

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