Why does the electric fan slow down after a long time?

1. The capacitor deteriorates, replace the capacitor with the same capacity and give it a try;

2. The bearing is short of oil, add some sewing machine oil to give it a try.

3. There is a slight short circuit in the motor coil, and the motor can only be replaced in this case.

The details are as follows: Common faults.

1. The fan shaft part should ensure that there is lubricating oil, otherwise the fan blade cannot be dragged by the motive on it. 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 a superheating circuit breaker in the motor, if there is a short circuit in the coil winding, the heat will increase in a short time, so the motor will"Strikes"It's not moving.

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.

5. In many cases, the reason why the fan blades do not rotate is the problem of poor maintenance. 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.

6. 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.

7. 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.

8. If the axial clearance of the shaft is too large, you can choose to adjust the gasket after disassembling the motor. However, remember that when installing the motor back, you should pay attention to the rotor must be concentric with the bearing, slowly tighten the lubricating screws diagonally, and finally knock the shaft with a wooden handle to ensure that it is concentric.

9. If it is because of electrical faults, you can check the wiring lines, sometimes the wires are damaged, etc., and the problem can be repaired.

There are generally three reasons:

First, the starting capacitance capacity of the motor decreases, which can be solved by replacing the new capacitor with the same capacity;

Second, the motor bearing is worn and dry, and the lubricating oil should be cleaned and filled;

The third is that the motor coil is short-circuited between turns, and the coil should be rewound or replaced with a new motor.

The starting capacitor in the fan is broken, it would be nice to replace it with a new one, and there are only a few yuan on the market.

The bearing is short of oil, dripping lubricating oil.

It may be that the shaft of the fan is rusty, and it is lubricated with oil.

It is generally affected by the starting capacitor inside.

There is a problem with the motor windings or the capacitance capacity is reduced.

As the fan slows down over time, the capacitance of the capacitor decreases, and the friction of the bearing increases.

The main reason why the fan slows down after a long time is that the axle of the electric machine is not lubricated enough, and the rotational resistance is too great at this time. At this time, the outer cover and fan blades should be removed, and the axle of the machine should be lubricated.

The speed of the electric fan slows down, or it is difficult to start, 99% of the reasons are mostly due to the increase in friction caused by dirt such as debris caused by the wear of the shaft and the stickiness of the oil.

The most common reasons for the slowdown of electric fans after a long period of use are as follows: First, the capacitor capacity is insufficient. Second, there is a lack of oil in the bearing or bushing. Third, the insulation of the coil copper wire is aging, and there is a phenomenon of open circuit or short circuit.

Hello dear I am honored to answer for you, thank you for your patience, for you to inquire: the reason why the fan is getting slower and slower is that the motor lubrication of the fan is not enough to rotate the resistance, indicating that the motor bearing is seriously worn or the lubricating oil is dry, replace the new bearing or add lubricating grease to make it rotate flexibly without resistance. When installing the fixed motor, it is necessary to tighten the screws diagonally, and gradually tighten, the rock bureau can not be in place in one step, and at the same time it is necessary to knock the shaft back and forth with a wooden handle driver to ensure that the shaft is concentric with the bearings at both ends, so that the rotation will be flexible and free of resistance after fastening.

Summary. Hello dear. <>

Why are the fans getting slower.

Hello dear. <>

<> am honored to answer for you, thank you for your patience and wait for you to inquire about the base liquid front: the reason why the fan is getting slower and slower is that the fan plug is not plugged in properly, so the speed of the electric fan buried stove will slow down when it is rotating.

Hello dear.

1.It is because the fan has been used for a long time, the fan blades are aging and damaged, and the internal resistance of the motor becomes larger, which will also cause the electric fan to be unable to rotate. 2.It is the capacity of the capacitor that becomes smaller, and the axial clearance of the shaft of the electric fan is too large.

1. It may be because the electric fan has been used for a long time, the lubrication inside is not good or the bearing wear is more serious, you need to cut off the power supply, drop a few drops of lubricating oil inside, if it still does not work, you need to find a professional maintenance personnel to replace the bearing. 2. It may be that the capacity of the fan starting capacitor has decreased, and the capacitor of the same capacity needs to be replaced. 3. It may be caused by the abnormal power supply voltage, and the voltage needs to be adjusted to return to normal.

x000b x0001 related knowledge popularization: 1. The electric fan should not be too close to the human body, too close to the wind makes the gap between blood circulation and sweat circulation too large, and the nerve center will lose balance, once the time is too long, the various organs of the human body will feel tired, so that the whole body feels uncomfortable. The best place of the electric fan is about 2 meters away from the human body, so that the wind is softer and more even.

2. The fan blade of the electric fan is an important component, so it must be protected to prevent deformation when installing, disassembling, scrubbing or using. In particular, it is important to prevent children from inserting foreign objects, such as pencils, into the fan. 3. When using the fan for the first time in the new season, don't forget to remove the fan cover and scrub the inside carefully, because a lot of dust will fall into the fan and blow into the house if you don't wipe it off.

The speed of the electric fan slows down after a long time, which may be due to the lack of lubricating oil in the fan shaft part, the bearing wear and tear after a long time, or the motor is overheated and the motor is aging. If there is a shortage of oil, it is sufficient to replenish the oil. If it is caused by serious wear and tear or the aging of the motor caused by the deterioration of the load capacity of the motor, the motor or bearing can be replaced, or the fan can be directly replaced.

Analysis of specific causes.

1. Lack of lubricating oil. The fan shaft part should ensure that there is lubricating oil, otherwise the fan blade will not be dragged by the motor on it. If you are at home, you can choose to turn off the power and then turn the fan blades, if the rotation is stiff, you can basically be sure that there is no lubricating oil.

After removal, the shaft can still operate normally, which means that the motor is not broken. If it doesn't work, it's something else.

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

3. The motor is overheated. The overheating of the motor will cause the load capacity of the motor to deteriorate, and the active power of the motor will change and the bending loss will be low, resulting in the inability to drive the load. There is a motor in the device of the fan, and there will be an overheating circuit breaker in the motor, if there is a short circuit in the coil winding, it will bury the heat and increase the heat in a short time, so that the motor will strike.

The speed change of the electric fan for a long time may be due to the following reasons:

1.Dust and dirt accumulate on the fan blades, resulting in increased resistance, which slows down the rotational speed.

2.The lubricating oil of the fan motor is dry or depleted, causing the motor to not rotate smoothly, which slows down the rotation.

3.The capacitors of the fan motor are aging or damaged, causing the motor to not be able to operate the keys properly, which slows down the rotation.

Repair method:1Clean the fan blades and grille to reduce drag and increase rotational speed.

2.Add an appropriate amount of lubricating oil to the motor bearing to keep the motor running normally.

3.Replace the capacitor to restore the normal operation of the motor.

If the above methods cannot solve the problem, Xianyan recommends sending the electric fan to a professional repair shop for maintenance.

The slow speed of the fan after a long time may be caused by the following reasons:

1.Dust or dirt accumulates on the fan blades, causing poor air flow, which slows down the rotational speed.

2.Worn fan bearings or insufficient lubricating oil lead to increased rotational resistance, slowing down the rotational speed from collapse.

3.The fan motor is aged or damaged, resulting in a decrease in motor output, which slows down the rotational speed.

4.The unstable voltage of the fan power supply or the lack of power supply causes the motor cluster to be out of order and the output power is reduced, which slows down the rotational speed.

Workaround:1Clean fan blades and bearings regularly to keep air flowing.

2.Lubricate regularly to keep the bearings lubricated.

3.Replace the motor or repair the motor.

4.Make sure that the power supply voltage is stable and provides sufficient power supply.