Wheel machine safety operationPre-installation check the grinding wheel for cracks, if not easy to identify the naked eye, can be strongThe wheel lift line, and then a piece of wood gently tapping, listening to the sound. (The metallic soundExcellent, voiceless sound is bad).2. The grinding machine must have a solid right wheel cover, shall be used.3. Install the wheel can not be on the nut too loose, too tight, should be checked prior to use nuts are loose.4. After installing the wheel, be sure to test idle for 2 to 3 minutes to see whether the balance of its operation, the protection device is properly reliable operation in the test, we should arrange two staff members, one of whom stood side wheel actuated wheel, such as there are exceptions, by another person in the distribution cabinet immediately cut off the power. To prevent accidents.5. When using a grinder, you must wear protective glasses.6. When you start grinding wheel must be 40 to 60 seconds grinding, grinding tools should stand before the speed is stabilized wheel side, not being on the wheel to prevent wheel broken pieces flying out of wounding.7. Never use both at the same time a wheel.8. When grinding, the tool should be slightly higher than the wheel center position. Shall not apply excessive force to prevent slippage injured hand.9. grinder without permission, not allowed to mess with.10. After use should be readily turned off the power grinder.Grinder should be cleaned 11. work.