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How to eliminate these faults is as follows:
1, the power switch of the vacuum cleaner is broken, which will cause the vacuum cleaner motor to stop running once, so you can only replace it with a new power switch.
2. If there is something wrong with the power cord or pipeline, it is necessary to replace it with a new one. You can tell by careful examination.
3. Poor contact between the brush and commutator of the motor will also cause the motor not to turn. At this time, it is necessary to grind the brush so that the gap between the brush and the brush holder does not exceed 0.2 mm, and the surface contact area between the brush and the commutator does not exceed 80%. If it still doesn't work after the operation, a new brush is needed.
4. If it is too tight, reinstall the bearing and check whether the end cover is suitable. If the bearing is damaged, it must be replaced with a new bearing. Remember to replace the bearing of the same model.
5. If the motor rotor is stuck by foreign objects, the motor will not rotate. So once the motor rotates, it will not rotate. It is necessary to check whether there is foreign matter winding on the rotor, and then try to see if the motor rotates.