The common fault of the scraper winch electrical part is Motor cooling fan and control board are easily damaged, and the operating part is leaked and short-circuited due to moisture. If the sand and gravel are filled with the fin gap on the motor, the heat is dissipated. When the cooling fan is damaged, it will cause the motor temperature to be too high and reduce the life of the motor. Therefore, the electrical control panel should be placed in a dry and ventilated place. When blasting ore, the mine winch must be moved to a safe place in advance and properly covered. In addition, operators should often removes debris from the heat sink to maintain good heat dissipation.