Weekly inspection: Sand washing machine weekly inspection should be conducted to check whether bolts and nuts are loose, whether electrical wiring is damaged, reducer and motor working condition.

Monthly inspection: check the wear of broken teeth at least once a month.

Annual inspection: It is required that the mobile stone crusher be inspected comprehensively, the bearings of motor, reducer and crushing roll be dismantled, the waste lubricant in the Raymond mill be cleaned, and the wear of transmission parts be inspected. If the wear is serious, it should be replaced in time, and the bolts of each part should be tightened once.

After disassembling and repairing the body, a layer of sealant must be uniformly applied on the joint surface of upper and lower bearing seats and the static joint surface of the body to prevent leakage of oil on the sealing surface.