| 1.The the universal grinder before inspection activities teeth screws are loose, loose must be tightened.
2. Check the dust bag is installed.
3. Spindle turned by hand before using universal grinder should be stuck phenomenon, the spindle should turn freely.
4. Should be checked before use universal grinder machine cavity must be cleaned.
5. Open Duster universal grinder first, and then open the grinder, contrary shutdown.
6. The end of the day, you must clean the universal grinder machine cavity, the machine cavity without any debris.
7. Every day to clean dust bag.