Motor maintenance method

Professional motor maintenance and repair center motor maintenance process: cleaning stator and rotor--replace carbon brushes or other parts--vacuum F-class pressure immersion paint--drying--calibration balance.
1. The use environment should always be kept dry, the surface of the motor should be kept clean, and the air inlet should not be blocked by dust, fiber, etc.
2. When the thermal protection of the motor is continuously activated, it should be found out whether the fault comes from the motor or the overload or the setting value of the protection device is too low. After eliminating the fault, it can be put into operation.
3. The motor should be well lubricated during operation. Generally, the motor should be replenished or replaced with grease after running for about 5,000 hours. When the bearing is found to be overheated or the lubrication is deteriorated during operation, the hydraulic grease should be replaced in time. When replacing the grease, the old lubricating oil should be removed, and the oil groove of the bearing and the bearing cover should be cleaned with gasoline, and then ZL-3 lithium-based grease should be filled into 1/2 (for 2 poles) and 2/3 (for 4, 6, and 8 poles) of the cavity between the inner and outer rings of the bearing.
4. When the life of the bearing ends, the vibration and noise of the motor will increase significantly. When the radial clearance of the bearing reaches the following value, the bearing should be replaced.
5. When disassembling the motor, you can remove the rotor from the shaft extension end or the non-extension end. If it is not necessary to remove the fan, it is more convenient to remove the rotor from the non-extension end. When pulling the rotor out of the stator, you should prevent damage to the stator winding or insulation.
6. When replacing the winding, you must record the original winding form, size, number of turns, wire gauge, etc. When these data are lost, you should ask the manufacturer for them. Changing the original design winding at will often deteriorates one or several performances of the motor, or even makes it unusable.