The problems when the fan is running but there is no wind are:
1 You also need to consider the duration operation of the electric fan. used. The electric fan motor will wear out. Yes, the motor shaft sleeve is easy to burn when worn out.
2. If the motor is used for a long time, the internal resistance of the motor will also increase and the load capacity will decrease, resulting in the inability to rotate the fan blades. In addition, if the axial play of the motor rotating shaft is too large, the load will also not be able to be dragged.
3. Most people may encounter the following phenomenon: The electric fan stops rotating. You have to pull it by hand or it takes a long time before it starts to spin slowly.
4. After using it for a while, I found that it would not moves even if I removed it by hand. The possible reason for this phenomenon is that the fan start capacitor has become smaller and is not enough to run the motor.
5. If the electric fan is not spinning, the first thing to consider is that the motor is not properly lubricated. When the fan blades are installed on it and the motor is not moving, you will find that. the shaft can still work normally after being removed. This means the fan motor is not working properly.
1. The fan blades are installed backwards: there is no wind at the front but there is wind at the back (try it yourself) and you will know if that is the reason ; /p>
2. Fan blades are deformed: disassemble. For the lower fan cover, tilt each fan blade at a certain angle depending on the direction of rotation of the motor. Note: The angle of inclinching should be inclined backwards in the direction of. rotation. The angle should not be too large, otherwise it will hit the outer cover. The tilt angle of all fan blades should be as high as possible, otherwise the fan will shake a lot after installation.
3. The fan blades may not be seated correctly. Secure them firmly and try again.
4. The small fan can be reversed by turning it by hand. In your case, if you block the fan and reverse it, there will naturally be no wind from the fan, and the noise will become louder.