Maintenance and repair of electric motors:

1. The operating environment should always be kept dry, the surface of the motor should be kept clean, and the air inlet should not be obstructed by dust, fibers, etc.

2. When a protection alarm occurs, the cause of the failure should be found out, and the operation can only be put into operation after the failure is eliminated.

3. When the machine is stopped for inspection, the operation can only be carried out after the motor has completely stopped.

4. In order to ensure good lubrication of the motor during operation, the motor should run for about 4000 hours, that is, the grease should be supplemented or replaced (the closed bearing does not need to be replaced during the service life). When the bearing is found to be overheated or the grease deteriorates during operation, The grease should be replaced in time. When replacing the grease, remove the old grease and clean the oil grooves of the bearings and bearing caps with gasoline. For motors with a speed of 1500r/min and below, refill the bearing grease type for medium and small motors bearing grease No. 2, and fill the inner and outer rings of the bearing About two-thirds of the gap between the bearings; the motor speed of 2500r/min and above is filled with bearing grease type HTHS, which fills about one-half of the gap between the inner and outer rings of the bearing.

5. When the life of the bearing is over, the vibration and noise of the motor will increase obviously. Check that the radial clearance of the bearing reaches the value in the table below, and the bearing should be replaced.

Storage and transportation of electric motors:

1. The motor should be kept dry during storage to avoid sudden changes in ambient temperature.

2. The storage of the motor should not be too high to avoid damage to the lower motor.

3. The motor should be prevented from tipping or inverting during storage and transportation.