1. First, cut off the power supply of the fan, then remove the parts of the fan, check the accessories of the fan, and replace the damaged parts.
2. If the electric fan has no parts damaged, you can disassemble the fan of the fan, clean the dust and other debris on it, add some lubricant to the fan shaft, clean the fan's protective screen, and then assemble it.
If no part of the electric fan is damaged and the fan is cleaned, the electric fan still makes a lot of noise. It may be that the electric fan has been used for a long time and the fan is aging. This situation can only be solved by replacing a new electric fan.
The uneven chassis and contact surface of some electric fans may also cause too much noise. When the electric fan is running, the equipment will move in and out as a whole. Generally, there is no problem. However, if the chassis of the electric fan is uneven, it will make an abnormal knocking sound. At this time, some soft pads can be added to the chassis to prevent noise, so as to achieve the effect of noise reduction.