After a quite long time application of the mining ventilator, we may meet the problem of mtal collision sound durning the usage, so what will be the reason and how to deal with it? 

The reason that occur this problem

• Blade wipes the casing
• Metal things enter the ventilator
• Motor bearings been damaged

How do we solve it?

• Replace blades or adjust gap
• Remove the things of the ventilator
• Replace motor or bearings

Above are the reason and problem of why there is a metal noise in the mining ventilator, do you learn it?