The maintenance unit provides vital information concerning a vhf milling machine's ability to mill jobs properly:

The following information can be collected from the maintenance unit:

-air pressure level

-airborne contaminants can be detected early (white filter will be polluted)

-liquid contaminants such as water or oil can be seen inside of the maintenance unit's plastic case

All of these indicators can be used to determine if there is a possible problem stemming from the compressed air source