Professional motor maintenance repair center maintenance process: cleaning of motor stator and rotor - replace carbon brush or other parts of vacuum pressure impregnation - F - drying - balancing school. 1, the use of the environment should be kept dry, motor surface should be kept clean, air inlet to dust, fiber and other obstacles. In 2, when the motor thermal protection continuously happen when, should find fault from motor or overload protection device setting value or too low, eliminate malfunction, can be put into operation. The 3, should ensure the motor in the operation process of the good lubrication. General motors run for about 5000 hours, shall supplement or replace grease, discovered in moving bearing overheating or lubrication modification, hydraulic timely for lubricating grease. Replacing the grease, should remove the old oil, and gasoline to clean the bearing and the bearing cover of the oil tank, and then the ZL-3 lithium grease filled bearing inner and outer ring cavity between 1 / 2 ( 2 pole) and 2 / 3 ( 4, 6, 8 poles ). In 4, when the bearing life end, motor running vibration and noise will increase obviously, check the radial clearance of the bearings to the following values, namely, replace the bearing. In 5, removing the motor, the shaft extension end or the extension end of rotor can be removed. If there is no need to remove the fan, or from a shaft extension end take the rotor is convenient, from out of the rotor in the stator, the stator winding insulation should prevent damage or. In 6, replacing the windings must take down the original winding form, size and number of turns, gauge, when lost these data, to the factory to obtain, arbitrarily change the original design the motor winding, often one or several performance deterioration, and even can not be used.