Correct answer
Removing moisture from compressed air.
The dryer removes moisture from compressed air, helping prevent it from freezing in the lines. Injecting alcohol or antifreeze must not be treated as a procedure for every system: these products can damage some devices. For example, Bendix prohibits introducing them into or upstream of its AD-HF/AD-HFi dryers. Checks and maintenance must follow the instructions for the installed system.
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Adding water to compressed air to moisten the lines.
Removing moisture from compressed air.
Preventing the compressor from producing pressurised air.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
En un sistema de frenos neumáticos equipado con secador de aire, ¿qué función ayuda a evitar la formación de hielo en los conductos?
- Impedir que el compresor produzca aire a presión.
- Añadir agua al aire comprimido para humedecer los conductos.
- Separar la humedad del aire comprimido.(Correct answer)
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