The correct maintenance of the motor can prolong the service life of the motor, motor maintenance process: clean stator - replace carbon brush or other components - vacuum pressure varnished F - drying - school of dynamic balance. Using the environment often should keep dry, motor surface should be clean, air inlet should not be affected by dust, fiber, etc. Continuous action occurs, when the thermal protection of the motor should be troubleshooting or from motor overload or protection setting value is too low, after eliminate the fault, before put into operation. Should guarantee the motor in the process of running a good lubrication. General motor running 5000 hours, or should complement or replace grease, found in the operation of the lubrication bearing overheating or metamorphism, hydraulic in grease in a timely manner. Replacing grease, should remove the old