Maintenance Method Of Single-phase Motor

1. The use environment should be kept dry frequently, the surface of the motor should be kept clean, and the air inlet should not be hindered by dust, fiber, etc.
2. When the thermal protection of the motor is continuously operated, it should be found out whether the fault comes from the motor or overload or the setting value of the protection device is too low, and the fault can be put into operation only after the fault is eliminated.
3. It should ensure that the motor is well lubricated during operation. The general motor runs for about 5000 hours, that is, the grease should be replenished or replaced, and when the bearing is overheated or the lubrication deteriorates during operation, the hydraulic pressure changes the grease in time. When replacing the grease, the old lubricating oil should be removed, and the oil groove of the bearing and bearing cover should be cleaned with gasoline, and then the ZL-3 lithium grease should be filled with 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 operation will increase significantly, and the bearing should be replaced when the radial clearance of the bearing reaches the following values.
5. When disassembling the motor, the rotor can be taken out from the shaft extension end or non-extension end. If it is not necessary to remove the fan, it is more convenient to remove the rotor from the non-shaft extension, and when the rotor is withdrawn from the stator, damage to the stator winding or insulation should be prevented.
6. When replacing the winding, you must write down the form, size and number of turns, wire gauge, etc. of the original winding, when these data are lost, you should ask the manufacturer to obtain it, change the original design winding at will, often make the motor one or several performance deterioration, or even unusable.