Maintenance method of drying kiln motor

The motor of drying kiln is also a kind of motor, so their maintenance procedures are the same. The maintenance procedures for the special motor of drying kiln are as follows: cleaning the stator and rotor -- replacing the carbon brush or other parts -- vacuum class F pressure impregnation -- drying -- dynamic balance calibration.

1. The operating environment should always be kept dry, the surface of the high-temperature motor of the drying kiln should be kept clean, and the air inlet should not be obstructed by dust, fiber, etc.

2. When the thermal protection of the motor acts continuously, find out whether the fault is from the motor or overload or the setting value of the protection device is too low. After the fault is eliminated, the motor can be put into operation.

3. The motor shall be well lubricated during operation. Generally, the motor runs for about 5000 hours, that is, the lubricating grease should be supplemented or replaced. If the bearing is overheated or the lubrication deteriorates during operation, the hydraulic pressure should replace the lubricating grease in time. When replacing the lubricating grease, the old lubricating oil shall be removed, and the oil grooves of the bearing and bearing cover shall be cleaned with gasoline, and then ZL-3 lithium base grease shall be filled into 1/2 (for the second pole) and 2/3 (for the fourth, sixth, and eighth poles) of the cavity between the inner and outer rings of the bearing.

4. When the service 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 shall be replaced.

5. When disassembling the motor, take out the rotor from the shaft extension end or non extension end. If it is unnecessary to remove the fan, it is more convenient to take out the rotor from the non shaft extension end. When taking out the rotor from the stator, the stator winding or insulation shall be prevented from being damaged.

6. When replacing the winding, the form, size, turns, wire gauge, etc. of the original winding must be recorded. When these data are lost, they should be obtained from the manufacturer, and the original design winding can be changed at will, which often worsens the performance of one or more high-temperature motors for drying kilns, even makes them unusable.