Before starting the machine, check whether the observation door of the vortex chamber is closed tightly to prevent materials from rushing out of the observation door of the vortex chamber, which may cause danger. Check the direction of impeller rotation. Looking from the direction of the inlet, the impeller should turn counterclockwise. Otherwise the motor wiring should be adjusted. The starting sequence of the crusher and conveying equipment is discharge, crusher, and feeding.The crusher must be started without load, and the material can only be fed after the crusher is running normally. The shutdown sequence is the reverse of the startup sequence. The feed particles are strictly in accordance with the relevant regulations, and the materials larger than the regulations are prohibited from entering the crusher.Otherwise, it will cause the imbalance of the impeller and excessive wear of the impeller, and even block the impeller passage and the central feeding pipe, so that the crusher can’t work normally. If it is found that there are too large pieces of feed, it should be eliminated in time. When the discharge equipment stops, the feeding should be stopped in time. Otherwise, the impeller will be crushed and the motor will be burned. Feeding strives to be continuous and uniform. During the operation of the crusher, there must be no severe vibration and abnormal noise. Otherwise, stop and check.