What are the common faults of electric fans?
In case of abrasion, the blade does not rotate. The easiest part is to replace the parts, especially the shaft sleeve, which is easy to burn if worn.
If it is due to electrical fault, you can check the wiring of the wiring, and sometimes wire damage, etc., can be repaired on the problem.
The fan device is composed of a motor, a circuit breaker motor overheating, if local coil winding short circuit occurs, will let the heat increase in a short time, this case motor will "strike" real.
If a fan is used for a long time, the motor will be worn out and the shaft sleeve of the motor will be burnt easily after being abraded
The fan shaft part is to make sure that there is grease, or that the fan cannot drive on it
