1. If the electric fan has been used for a long time, the motor may be poorly lubricated, causing the fan blades to not move. First, disconnect the power and agitate the fan blades. If you notice some stiffness, add lube. Add a few drops of lubricant to the motor bearings to moisten them. Finally, try again. 2. It is also possible that the motor is worn, and its bushing is easily burned out after wear, increasing resistance, resulting in poor driving ability. What needs to be done is to replace the motor. 3. It may also be a protection device because there is an overheating protection appliance inside. If a short circuit occurs, the temperature will rise sharply, causing an open circuit. At this time, the electric fan will suddenly stop working. 4. It is very likely that the capacitance becomes smaller. After an electric fan is used for a period of time, its capacity will gradually decrease. After the capacity is reduced, the load cannot be driven. The solution is relatively simple. It is better to replace it with the same model with 20% more power than the original one, and the effect will be better. 2. How to determine if the electric fan capacitor is broken? 1. If the electric fan rotates slowly, the capacitor of the electric fan may be damaged. In this case, the electric fan blades can only rotate, but the motor bearings may become stuck. When the power is turned on, it may not rotate or rotate slowly. 2. You can listen to see if there is a buzzing sound, because in the charging state, the load is relatively large, and there is a problem of burnout, which will cause vibration. The electric fan will also make abnormal noises at this time. Consider that the capacitor may be damaged.
The range hood at home suddenly stopped running, what happened?
I think the discussion should be based on these two specific situations: 1. If the boat is driven by the wind, The engine has not started, then wind power can be used to generate electricity at this time, because the wind speed is much greater than the ship speed at this time, and the wind force is strong enough; 2. If the ship is driven by an engine, then if the wind power is used to generate electricity at this time, It will definitely increase the resistance of the ship when it is traveling, and the ship will slow down and require more power. Therefore, the gain outweighs the loss at this time, and it is not suitable to use wind power to generate electricity. To sum up, it is possible to use wind power to generate electricity. The specific operation is to turn on the wind power generation system when the ship is driven by the wind, and turn off the wind power generation system when it is driven by the engine. This is easy to do, because when the circuit is cut off Although the wind impeller will continue to rotate under the influence of wind in the future, it will be idling with very little resistance and will have no impact on the movement of the ship.
There may be the following situations:
1. Too much oil on the fan blades;
2. The motor in the range hood Lack of lubricating oil;
3. The motor bearings of the range hood are greasy, which will also cause the motor to not rotate normally, causing the range hood to stop rotating;
4. The motor is damaged.
Repair method for range hood not spinning:
1. The oil stains on the fan blades can be seen. Clean the oil stains on the fan blades first, and then gently remove the oil stains on the fan blades. Turn the fan blades to see if they rotate easily.
2. Gently turn the fan blades of the motor. If the fan blades rotate very slowly, it means that the lubrication is not good. You can turn on the motor, drop some lubricating oil on the rotating shaft, and rotate the motor a few more times. wind leaves, straightUntil the motor bearing rotates briskly.
3. If you gently move the fan blades and the fan blades rotate very lightly, it means that the lubrication is not a problem. Finally, consider the motor failure and the motor heating. If the motor becomes hot after only running for a short time, it means that the coil in the motor is caused by a short circuit between turns. The motor is broken and you can only buy a new one.