Bench grinders 
 】 【Purpose and use of 
 M32-type bench grinders with beautiful appearance, simple structure, ease of use and excellent performance characteristics, commonly used in equipment for general industrial and mining enterprises. 
 1. Bench grinders are mainly for general industrial and mining enterprises for use as a cutting tool sharpening, but also for small parts in common grinding, deburring and cleaning and so on. 
 2. Bench grinders can be used no more than 1000 meters above sea level, surrounded by the relative air humidity of not more than 95%, the maximum ambient temperature does not exceed +40 ℃ in humid tropical regions. 
 3. Bench grinders intolerance, chemical corrosion, and shall not be exposed to outdoor use. 
 New models: 
 MD3215 
 MD3220 
 MD3225 
 M3215 
 M3220 
 M3225 
 Old Model: 
 S1ST-150 
 S1ST-200 
 S1ST-250 
 S3ST-150 
 S3ST-200 
 S3ST-250 
 【】 To use and maintain 
 1. Grinder before use must be more than 500 volts megger to measure the insulation resistance, and its value is not less than 0.5 MΩ. 
 2. Grinder should be carefully checked before using their parts, whether the damage or the transport of crack, if fasteners loosening, if any should be repaired and tightened. Special attention to wheel for cracks, can tap the gavel to issue clear and sound can be used. 
 3. Grinder before use, you should turn the shaft by hand to observe the rotation is flexible and light, listen to the sound with or without grazing. 
 4. Wheel drive and fan rotation direction indicators should be consistent with the direction of rotation. 
 5. Grinding machine in operation, work material and grinding wheels are not allowed to collide, we must apply a gradually increasing pressure on the wheel from impact, to avoid wheel explosion, accident. 
 6. Grinder wheel guard and repair than replace the removal of foreign, usually non-removal to ensure safety. 
 7. The use of two wheel grinders wear the biggest difference between the diameter of no more than 20%. 
 8. Replaced with new wheel, grinding wheel should be installed so that the balance between the wheel and then set cushion device to neat and smooth, not over tighten the nut to prevent wheel breakage. Finally, protective cover must be covered. 
 9. Bearing grease, generally about every six months to be replaced once a year for maintenance, inspection should be open to all wheel drive, remove the inner dust and oil, grease and other cleaning work bearing swap, where by the demolition installed over the wheel repair machine, check its operation is still light, bearing without stuck phenomenon, whether the short circuit coil, and finally the no-load run for about 30 minutes. 
 10. Grinding machine must be stored in dry, well ventilated and clean indoor warehouse, the warehouse should not be acid, alkali, chlorine and other corrosive gases, and do not have a corrosive effect on the insulation material of any chemical in a warehouse with . 
 11. Grinding machine in the inventory period, should not be damp, cold, insulated surface to avoid cracking of the normal use of grinding machines.