What s the matter with the blades of an electric fan not turning?

Reason]: 1. After using the electric fan for a long time, we must first see whether the motor lubricating oil is still there, if the motor lubrication is not good, there will generally be noise, and the more serious thing is that the fan does not rotate. In the event of a power outage, if you pull the fan blades with your hands, the fan will also be a little stiff.

2. Most people may encounter the following phenomenon, the electric fan does not rotate, you pull it out by hand or it will take a long time to slowly turn up, and after using it for a period of time, you find that it will not move if you pull it out by hand. The possible reason for this phenomenon is that the starting capacitance inside the fan has become small enough to rotate the motor.

3. After the fan has been used for a long time, the motor in the fan is lost, and the shaft sleeve of the motor is worn out, which is easy to burn off.

4. The axial clearance of the rotating shaft of the motor is too large, which will also cause the inability to drag the load.

Electric fan does not turn maintenance method]:

1. Just add some oil to the motor (if you really can't find the lubricating oil, the vegetable oil used at home is also OK).

2. Replace the capacitor in the fan, we can see the capacitance after removing the shell of the motor after the fan. We can replace the capacitor of the same specification, and the capacitor can also be a little larger than the original capacitor (no more than 20% of the original capacitance).

3. In view of the non-rotation of the fan blade caused by wear, it is simple to replace the shaft sleeve.

First of all, turn on the fan, if the leaf does not turn, you first use a thing to turn the leaf to see if the leaf starts, if it starts, it means that the capacitance of the electric fan is broken, if it does not move, first power off, use the electric resistance of the multimeter to test whether the line inside is connected, if it is passed, then it is likely that the motor is broken, if it is not passed, it is not through that place is broken!

The fan does not turn for the following reasons:Reason 1: When the fan does not rotate, the first reaction is that the plug is loose.

At this point, you can try plugging it back in to confirm. Then check if the fan's wires are disconnected. If the wire is broken or worn, the copper wire in the wire can break, causing a power failure.

Reason 2: The core component of the fan is the motor, and only the rotation of the motor shaft can make the fan rotate. After a period of use, due to the lack of lubricating oil on the shaft, the fan is difficult to rotate, and finally the fan cannot rotate.

If there is a power failure, move the fan blades by hand. If the fan blades rotate slowly, you can tell that the motor is lacking lubricating oil.

Reason 3: The capacitor of the electric fan starter is damaged. The starter capacitor will gradually lose its capacity over time, and when the capacity is reduced to a certain level, it will not be able to drive the load, so the fan will not be able to spin.

Summary. 1.The first thing that comes to mind should be that the lubrication of the motor is not good, resulting in the motor not being able to drag after the blade is installed.

You remove the blades, plug in the power supply, if the shaft can rotate, it means that this is the problem, if it doesn't work, then it is something else. 2.Whether your fan is overheated, the motor overheating will also cause the motor to have a worse load capacity, and the active power of the motor will become low, resulting in the inability to drive the load.

3.Secondly, you also have to consider how long the electric fan has been used, the motor will wear out, and the shaft sleeve of the motor will easily burn out after wearing. If the motor is used for a long time, the internal resistance of the motor will also become larger, and the load capacity will be lower, resulting in the inability to drive the fan blade to rotate.

4.Another is that the starting capacitor capacity becomes smaller, although those parameters are written on the nameplate, but after a long time, the capacitance capacity will decrease, resulting in the starting torque of the motor becoming smaller, unable to drive the load. This is simple, remove this capacitor, and then replace it with a new one, and the same model should be fine.

But it's better to change to a 20% larger one than the original, and you will get better results.

1.The first thing that comes to mind should be that the lubrication of the motor is not good, resulting in the motor not being able to drag after the blade is installed. You remove the blades, plug in the power supply, if the shaft can rotate, it means that this is the problem, if it doesn't work, then it is something else.

2.Whether your fan is overheated, the motor overheating will also cause the motor to have a worse load capacity, and the active power of the motor will become low, resulting in the inability to drive the load. 3.

Secondly, you also have to consider how long the electric fan has been used, the motor will wear out, and the shaft sleeve of the motor will easily burn out after wearing. If the motor is used for a long time, the internal resistance of the motor will also become larger, and the load capacity will be lower, resulting in the inability to drive the fan blade to rotate. 4.

Another is that the starting capacitor capacity becomes smaller, although those parameters are written on the nameplate, but after a long time, the capacitance capacity will decrease, resulting in the starting torque of the motor becoming smaller, unable to drive the load. This is simple, remove this capacitor, and then replace it with a new one, and the same model should be fine. But it's better to change to a 20% larger one than the original, and you will get better results.

Maintenance method of electric fan does not rotate 1If the blade is stiff after turning off the power, you should use some lubricating oil to drip into the shaft so that it can be lubricated so as not to affect the motor to drag the blade. 2.

For the fan blades caused by wear and tear do not rotate, the easiest thing is to replace the parts, especially the shaft sleeve, which is easy to burn off after wear. 3.If the capacitor capacity becomes smaller and the fan does not rotate, you can remove the capacitor and replace it with a new capacitor of the same model, it is recommended to choose a capacitor that is 20% larger than the original capacitor, which will have a better rotation effect.

4.If it is due to an electrical fault, you can check the wiring of each wiring, and sometimes if the wiring is damaged, you can repair the problem.

Summary. Hello dear, the reason why the blades of the electric fan can't turn: 1

If the fan plug does not rotate due to a loose plug, the fan plug can be inserted into a different socket. 2.The lubrication of the fan motor is insufficient.

The core part of the electric fan is the electric motor, and the rotating shaft of the motor drives the electric fan to run. After a period of use, there will be problems with the rotation of the fan due to the lack of lubricating oil in the rotating shaft, which will cause the fan to not function. When the power is off, use your hand to toggle the fan blades, if the fan rotates slowly, you can judge that the motor oil is insufficient.

3.The current in the fan is alternating current, and the working principle is that the energized coil is rotated by a magnetic field. The electric heat is converted into mechanical energy, which drives the blades to rotate, and at the same time, because of the resistance of the coil, a certain amount of heat will be generated, so the appearance of the electric fan will be heated under the action of a long time.

The fan cannot rotate because there is a problem with the capacitor, and there is a starting capacitor inside the electric fan to charge and discharge the instantaneous voltage of the coil, and if this fault causes the fan to start very slowly. With an equivalent capacity or a large capacity device will do.

The blades of the electric fan can't rotate, what is the reason?

Hello dear, the reason why the blades of the electric fan can't turn: 1If the fan plug does not rotate due to a loose plug, the fan plug can be inserted into a different socket.

2.The lubrication of the fan motor is insufficient. The core part of the electric fan is the permeation motor, and the shaft of the motor drives the electric fan to run.

After a period of use, there will be problems with the rotation of the fan due to the lack of lubricating oil in the rotating shaft, which will cause the fan to not function. When the power is off, use your hand to toggle the fan blades, if the fan rotates slowly, you can judge that the motor oil is insufficient. 3.

The current in the fan is alternating current, and the working principle is that the energized coil is rotated by a magnetic field. The electric heat of the dug locust is converted into mechanical energy, which drives the blades to rotate, and at the same time, because of the resistance of the coil, a certain amount of heat will be generated, so the appearance of the electric fan will be heated under the action of a long time. The fan can't rotate because there is a problem with the capacitor, there is a starting capacitor inside the electric fan to charge the instantaneous voltage of the electric and discharge coils, if this fault will cause the fan to start very slowly.

With an equivalent capacity or a large capacity device will do.

How to solve it.

First cut off the power supply of the electric fan, if possible, you can remove the protective cover on the outside of the electric fan, so that you can check the specific reason, and then turn the fan blades by hand to see how the fan blades rotate. If the collapse pin feels very dull when the fan blade rotates, then it is necessary to check the question and absence of the motor bearing, because the fan is mainly rotated by the bearing, but if there is dust in the motor bearing, it will lead to such a situation in the electric fan, so clean up the dust in time and add some lubricating oil appropriately.

But it was newly bought.

Pro, that may be a problem with the fan itself, you can find a merchant to change a new one.

The fan blades do not turn for the following reasons:

1. Poor maintenance and long-term lack of lubricating oil. The fan shaft part is to ensure that there is lubricating oil, otherwise the fan blade on the motive cannot be dragged. If you are at home, you can choose to turn off the power and then turn the fan blades, if the rotation is stiff, there is basically no lubricating oil.

2. Wear and tear caused by long-term use. If a fan is used for a long time, the motor will wear out, and the shaft sleeve of the motor will easily burn out after wearing.

3. The fan does not rotate due to overheating. There is a motor in the fan device, and there will be an overheating circuit breaker in the motor, if there is a short circuit in the coil winding, the heat will increase in a short time, and the motor will strike and not move.

4. The capacitance of the starting capacitor becomes smaller. When the fan has been used for a long time, the capacitance capacity will be reduced, resulting in a smaller starting torque of the motor, and it will not be able to drive the negative load.

5. Electrical faults, such as line damage, etc.

This problem can not be underestimated, the temperature is too high to affect the performance of the vehicle, it is easy to cause accidents, it is necessary to check carefully: 1. See if the water temperature relay is broken, and replace it if the contact is poor or does not respond. 2. The temperature control switch is damaged, resulting in the inability to power the fan when the water temperature is high.

3. If the fan is damaged, it may be that the load of the fan is overloaded or burned out by a short circuit.

1. In many cases, the reason why the fan blades do not rotate is the problem of poor maintenance. After turning off the power, turn the fan blades rigidly by hand, and then drip some lubricating oil into the rotating shaft so that it can be lubricated so as not to affect the motivation to drag the fan blades.

2. For fan blades that do not rotate due to wear, it is relatively easy to replace parts, especially the shaft sleeve, which is easy to burn out after wear.

3. The capacitor capacity is reduced, resulting in the fan not rotating. You can remove the capacitor and replace it with a new capacitor of the same model. It is advisable to choose a capacitor that is 20 years larger than the original capacitor for better rotation.

4. The axial clearance of the rotating shaft is too large, please adjust the washer after removing the motor. When installing the motor rearward, note that the rotor must be concentric with the bearing, tighten the screws diagonally, and then strike the shaft with a wooden handle. It's very easy to disassemble the motor, and it's even more difficult to install it back, don't do it casually, it's easy to service the fan.

If the bearing bushing is severely worn when disassembling the motor, it should be replaced with a new part.

5. For electrical faults, you can check the wiring of the wiring, and sometimes the wiring is damaged, etc., and the problem can be repaired. The power connection is poor, try replacing multiple power supplies. If the internal circuitry of the fan is not in good contact, the fan needs to be disassembled and inspected.