I. Preparation before use
1Sanding machine should be in charge of a person, often check to ensure normal operation.
2 Replacement of the new grinding wheel, should cut off the main power supply, while the installation should be checked before the grinding wheel piece is cracked, if the naked eye is not easy to identify, can be used as a solid line to the grinding wheel lifting, and then a piece of wood gently knocking, static listening to the sound. (Metal sound is excellent, mute sound is bad)
3 sander must have a firm and suitable wheel cover, bracket from the grinding wheel shall not exceed 5mm or shall not be used.
4 when installing the grinding wheel, the nut on the shall not be too loose, too tight, before use should check whether the nut is loose.
5 grinding wheel installed, it must be idle test 23 minutes to see whether its operation is balanced, whether the protection device is proper and reliable, test operation, should be arranged for two staff, one of whom stood on the side of the grinding wheel to open the grinding wheel, if there is any abnormality, by the other at the switchboard to cut off the power supply immediately. To prevent accidents.
6 Where the user to wear protective goggles, shall not face the grinding wheel, but should stand on the side. When using the sander, not allowed to wear gloves, it is strictly prohibited to use cotton gauze and other things wrapped around the tool for grinding.
7 before use should check whether the grinding wheel is intact (there should be no cracks, cracks or disabilities) grinding wheel shaft is installed firmly and reliably. Whether there is no debris between the grinder and the shield, whether it meets the safety requirements, to confirm that there is no problem, and then start the grinder.
Second, the use of precautions
1 start the wheel must be 4060 seconds after the speed stabilization before grinding, grinding tool should stand on the side of the grinding wheel, not facing the wheel, in order to prevent the wheel piece broken flying out of injury.
2 the same piece of grinding wheel, prohibit the use of two people at the same time, more forbidden in the side of the grinding wheel grinding, grinding, the operator should stand in the side of the grinder, do not stand in the front of the grinder, in order to prevent the grinding wheel cracked, accidents, while not allowed to wear gloves to operate, prohibited to surround the pile of operation and in the grinding of laughing and joking.
3 grinding standing position should be with the grinder at an angle, and the contact pressure should be uniform, is strictly prohibited to hit the grinding wheel, so as to avoid cracking, the grinding wheel is only limited to grinding tools, not grinding bulky materials or thin iron plate, as well as soft materials (aluminum, copper, etc.) and wooden products.
4 grinding edge, the operator should stand on the side of the grinding wheel or oblique position, do not stand in the front of the wheel, while the tool should be slightly higher than the center of the wheel. Do not exert too much force to prevent slipping off and injuring your hand.
5 grinding wheel is not allowed to get wet, should always keep dry, in order to prevent wet loss of balance, accidents.
6 do not allow grinding on the grinder larger and longer objects, to prevent the shattering of the grinding wheel flying out of the injury.
7 shall not hold the workpiece in one hand for grinding, to prevent falling off in the shield stuck broken grinding wheel.
Third, after the use of precautions
1 must often trim the grinding wheel grinding surface, when the tool is found to be serious jumping, it should be promptly trimmed with a diamond pen.
2 grinding wheel grinding thin, grinding small, the use of wear and tear is serious, is not allowed to use, should be replaced in a timely manner to ensure safety.
3 grinding is completed, the power should be turned off, do not let the grinder idling, at the same time should be frequently remove the dust accumulated in the shield, and regular maintenance and replacement of spindle lubricating grease.