Question:
Why do some air brake systems have an alcohol evaporator?
A
To reduce the risk of ice in air brake valves during cold weather.
explanation
Some air brake systems have an alcohol evaporator
to put alcohol into the air system. This helps to
reduce the risk of ice in air brake valves and other
parts during cold weather. Ice inside the system can
make the brakes stop working.
(According to CDL Handbook)
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