Flake ice machine is a kind of industrial ice making equipment, which is widely used in fishery preservation, food processing, chemical medicine, concrete cooling and other fields. The working principle of flake ice machine is to use a vertical spiral blade ice cutting evaporator. When ice making, the ice bucket and the internal water distribution device evenly distribute water to the inner wall of the ice bucket to freeze quickly. After the ice is formed, the spiral ice blade cuts the ice and falls. The stable operation of flake ice machine equipment is directly related to production efficiency and product quality. After long-term use, the flake ice machine will inevitably have various faults.