Electric fans are already indispensable in our daily lives. Even with air conditioning, they are relatively practical if not too afraid of heat. So during use, if the electric fan doesn't turn, will everyone repair it themselves? To be honest, repairing the fan is not that difficult. You can refer to the maintenance methods below and try to handle it yourself. Reason for the fan not rotating:
The power of the swinging mechanism of the electric fan comes from the worm at the rear end of the electric motor shaft, which undergoes two stages of variable speed to drive the four link system to swing back and forth. The failure of shaking the head mainly falls into two situations: not shaking the head and shaking the head more than once.
The reason for not shaking the head is that the shaking head is obstructed, which is caused by the deformation and bending of the connecting rod. At this time, there will be a "loud" sound. The deformed connecting rod can be removed and rectified after shaping; The second issue is transmission failure, which prevents the transmission of power. It is recommended to inspect the gear rod, swing head plate, gearbox, clutch, etc. If any detachment, foreign object jamming, or inability to engage due to severe wear and tear are found, the missing parts should be eliminated or replaced.
Shaking the head is not only caused by the breakage or loosening of the steel wire cable in the remote clutch or shaking head control device. If the steel wire is broken, a new steel wire flexible shaft can be replaced. If the binding head is loose, simply re fix the metal head of the sleeve.
How to repair the electric fan if it doesn't work?
1. Excessive axial clearance of the motor shaft: If the motor is disassembled, the excessive axial clearance of the shaft should be adjusted by adjusting the gasket. When installing the motor, the rotor must be concentric with the bearing, and the screws should be slowly tightened diagonally. Then, use a screwdriver to tap the shaft to make it concentric. Dismantling the motor is simple, but reinstalling it is not just a matter of casually reinstalling it. Do not let the above situation happen, otherwise it will be repaired directly.
2. Motor lubrication is not good: The first thing to consider is that the motor lubrication is not good. The rotating shaft needs to be lubricated with oil, and the motor cannot be dragged with the fan blades installed on it. However, after removal, the rotating shaft can still operate normally, indicating that the machine is not damaged. How to determine if there is a shortage of oil? After disconnecting the power, you gently move the fan blades and find that the rotation is a bit stiff, indicating that the oil is running out and the rotation is very easy and smooth, indicating good lubrication. This is due to other reasons.
3. Short circuit in the coil winding part: From the inside of the motor, there is a protective device and an overheated circuit breaker inside. This means that the coil winding part is short circuited, causing a sharp increase in heat generation and the circuit breaker to open. In this case, the motor usually goes on strike. This rarely happens. Reduced capacitor capacity: Another issue is a decrease in the starting capacitor capacity. Although the parameters are written on the nameplate, over time, the capacitor capacity will decrease, resulting in a decrease in the starting torque of the motor and inability to drive the load. This is simple. Remove this capacitor and replace it with a new one. The same model should be fine. But switching to a 20% larger one will yield better results.
4. Excessive motor loss: Secondly, you need to consider how long the electric fan has been used, and the motor will be damaged. After the motor shaft sleeve is worn, it is easy to burn off. If the motor is used for a long time, it will also increase the internal resistance of the motor and reduce its load carrying capacity, resulting in the inability to drive the fan blades to rotate. Motor overheating: Motor overheating can also cause the motor to carry load energy