If the fan does not rotate, how should I repair it?

The motor of the electric fan only hears a whining sound and does not rotate, which should be caused by improper tightening of the screw and the stuckness of the rotor core when the rotation is installed. Because the gap between the stator and rotor cores of the asynchronous motor used by the electric fan is very small, generally less, the screws should be tightened one by one in the order of the diagonal during general installation, if the diagonal order (but in the order of adjacency) is not used to tighten the screws, it is easy to cause the stator and rotor cores to be stuck, and cause the fault phenomenon that the motor does not rotate. The "whining" sound is caused by the electromagnetic force between the stator and rotor.

Check whether it is stuck, and when you turn the rotor in the case of power failure, you can feel whether it is stuck. It should be noted that do not drive the blades to rotate with your hands when electrified, otherwise it is easy to hurt your fingers in case it is not stuck.

If you turn the rotor when the power is off and you find that the rotor can rotate easily, but the fan does not rotate after powering on, it is most likely due to damage to the split-phase capacitance of the electric fan. Since most of the motors of electric fans belong to single-phase asynchronous motors, in order to make the single-phase asynchronous motor start, it is necessary to access the split-phase capacitor in one of the two windings in its wording, so that the current phase of the two windings is different (that is, the so-called "split-phase"), the capacitance is broken, the single-phase winding can only produce a pulsating magnetic field, and the motor will not be able to start. Some are less lubricating oil for the electric fan shaft, this can be unplugged in and rotate the blade by hand to try whether it is tight, if it is tight, it may be a lack of lubricating oil, or the 4 screws of the host may be loose and cause the asymmetry of the shaft inside, if the blade is not tight, you can change the starting capacitor to see, change the capacitor to see the capacity, the starting speed of the large capacity will be relatively faster, and it is recommended to change the capacitor to operate the person who understands the circuit, mainly for the sake of safety.

If you can disassemble it again, add some lubricating oil, if it still doesn't work, you can't do it, find a professional.

Oh, I thought it was the computer's CPU fan! Generally, if you don't shake your head, the gears in it are worn! Or rotten! How long have you been buying.

The repair method of the fan does not turn is as follows

Due to the serious aging of the capacitor, it can be replaced with a new capacitor of the same model; Due to the internal failure of the electric fan, in this case, it is recommended not to enter the crack balance for maintenance without permission, and it is better to contact professional maintenance personnel for maintenance; Since the power outlet is not energized, it is necessary to replace it with a new one.

The specific solutions for the electric fan not turning are:

Replace the accessories, the fan blade of the electric fan is an accessory that is easy to damage, especially the electric fan that has been used for a long time, so replacing the new fan blade in time can effectively increase the wind power and speed of the electric fan.

If the load capacity of the motor becomes poor, it will directly cause the electric fan not to rotate, and the motor load is not enough, mainly in the electric fan with a long service life, so it can be sent to the electric fan maintenance center for maintenance, or you can buy a new electric fan.

Replace the new capacitor, the electric fan will be used for too long will cause the capacity of the capacitor to become smaller, so that the electric fan can not be driven, so you need to replace a new capacitor, and the capacity of the capacitor can be increased by about 20% when replacing, so that the macro can effectively prevent the problem of the electric fan not turning.

1. If the capacitor does not rotate due to serious aging, it can be replaced with a new capacitor of the same model; 2. Due to the internal failure of the electric fan, do not carry out the maintenance by yourself, it is better to contact professional maintenance personnel for maintenance; 3. Due to the fact that the power socket is not energized, you need to replace it with a new socket for attempt. The specific solutions for the electric fan not to rotate are: 1. Replace the accessories, the fan blade of the electric fan is an accessory that is easy to damage, especially the electric fan that has been used for a long time, so replacing the new fan blade in time can effectively increase the wind power and speed of the electric fan.

2. Replace the new motor, the motor is the key factor for the electric fan not to rotate, if the load capacity of the motor becomes worse, it will directly cause the electric fan not to rotate, the motor load is not enough, mainly in the electric fan with a long service life, so you can send it to the electric fan maintenance center for maintenance, or you can buy a new electric fan. 3. Replace the new capacitor, the electric fan will be used for too long and the capacity of the capacitor will become smaller, so it will not be able to drive the electric fan, so you need to replace a new capacitor, and the capacity of the capacitor can be increased by about 20% when it is replaced, which can effectively prevent the problem of the electric fan not rotating.

The maintenance methods of the fan does not rotate include repairing the blades, replacing parts, repairing capacitors, replacing wiring, etc.

1. Repair the fan blades.

If 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. As a result, the motor cannot be dragged after the blade is installed. Remove the blades, plug in the power supply, if the hinge can rotate, it means that this is the problem.

2. Replace parts.

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. Repair the capacitor.

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. Replace the line.

If it is due to an electrical fault, you can check the wiring and hold each line, and sometimes the wiring is damaged, etc., and you can repair the problem.

How to choose an electric fan:

1. Look at the random file The random file of each electric fan includes the instruction manual, product certificate, electrical circuit diagram and packing list, and the quantity and quality of parts should be checked and checked according to the packing list when purchasing.

2. Look at whether the net cover and fan blades are obviously deformed by Sun Maqing: on the assembled electric fan grille, use a pen to point to the highest point of a fan blade, slowly move the fan blade, and the distance between the corresponding points of the other fan blades and the tip of the pen should be very close, and then rotate the fan blade, pay attention to observe whether the rotation is light and flexible, and can stop at any position.

3. See whether the control mechanism is flexible: the control mechanism includes speed control switches, timing knobs, shaking head switches, lighting switches, etc., which should be flexible in operation and reliable in contact. For the speed control gear, it is not allowed to have two gears turned on at the same time or one gear cannot be pressed.

Press the stop button, and each speed stop button should be reset normally.

The repair method of the fan does not turn is as follows

1. If it is confirmed that it is a socket problem, please plug the electric fan into another socket. If it is confirmed that the wire of the fan is broken, replace it with a wire of the same specification.

2. First clean the oil and sludge of the fan motor, and then drip the lubricating oil on the rotating shaft. The lubricant can be a car lubricant or a sewing oil. You can consult the salesperson before purchasing, and it can be used for fan motors.

3. If the thermal fuse or starter capacitor of the fan motor is damaged, you need to replace these two parts directly. It is possible to contact for a replacement or pay for the replacement within the warranty period.

The fan does not turn and needs to be attacked

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 be worn out, and the shaft sleeve of the electric machine will be easily burned 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 the skin source in this case.

4. The capacitance of the starting capacitor becomes smaller. When the fan is used for a long time, the capacitance capacity will decrease, resulting in the starting torque of the motor becoming smaller, and the load cannot be driven.