Poor contact
When the vacuum cleaner is connected to the smoke socket, a burnt taste may occur, while all other electrical appliances function properly. This suggests that the socket itself is not the problem, but rather a potential issue with bad contact. It's also possible that the vacuum's power usage exceeds the capacity of the socket, resulting in this situation. In this case, a high-power power supply could be a viable solution.
Motor overheats or burns out
In case your vacuum cleaner emits a burning smell and smoke, be sure to verify if the motor is overheating. To solve this issue, clean the inner parts of the motor. The vacuum cleaner could be burning due to gasket overheating, plastic burning, or even the motor rotor coil. Additionally, if the motor is a single transmission one, the rotor could burn out but still turn; however, it could cause reduced speed due to the increased fever. In case of severe overheating, it is best to cease using the vacuum cleaner and engage a professional maintenance expert to ensure proper repair.
Carbon brush failure
When the carbon brush of a vacuum cleaner wears out, it may cause poor contact, resulting in a range of problems like ignition and smoke. To rectify this, simply replace the carbon brush with a new one. It is essential to clean the contact surface of the brush and the steering wheel. The commutator has individual segments that are insulated from each other. If any residual debris is present in the gaps, it should be removed using a paper cutting blade. If the commutator is worn out, it might be necessary to replace the entire motor.