During the application of the pressure screen, the scaling phenomenon occurs due to the process water, calcium and magnesium hardness, PH value, conductivity, total alkalinity, temperature and other factors, which causes the following hazards:1. Increase the number of unplanned shutdowns, resulting in production interruptions and affecting the productivity of the plant. Shutdown for cleaning, increased maintenance costs and additional labor load; 2. Cause paper defects and affect product quality; 3. increase the consumption and pollution load of chemicals; 4. Cause production accidents and reduce the life of equipment; 5. Increase energy losses. Traditional repair methods include chemical cleaning, high-pressure water cleaning, adding antiscalants, manual mechanical cleaning, disassembly and replacement, etc., but they are time-consuming and laborious, and the repair effect is not ideal. In view of the above problems, foreign advanced maintenance methods mostly use electronic descaling instruments to solve. Compared with traditional maintenance methods, Deccola electronic descaler is better in terms of operation limitations, prevention of pipe scale formation, rust prevention and bacteria prevention, etc., and at the same time, it has less expenses, does not pollute the environment and water quality, and has more and more applications in the maintenance of pressure screens.