Fan repair by one's own hands: technology, device and feedback

As a rule, fans are used for a long time without interruptions. As a consequence, there are certain problems. Breakdowns can be small or large. In this case, you need to know how to do a primary examination. After that, you can think about how to do a fan repair. However, first of all you need to familiarize yourself with the device of a conventional floor model.

Fan device

Directly the cooling process is carried out due to the rotation of the blades. They are fastened on a special shaft. In this case, it is driven by a motor. Electric motors of different power are used, but they are quite similar in design. In turn, the control units are very different.

Stators are used to start the motors. The fan shaft is located on the cranks. The flanges of the models serve as a support for the contact pads. In addition, some fans have an element such as a reducer. Sometimes it is installed with a clamping bar for fixing.

Engine Repair

The motor in the device often breaks due to overheating. Repair of the radiator fan in this case must begin with a primary inspection of the model. To do this, you need to detach the cap that holds the cap. Then remove the protective grille. After this, unscrew the flange. In some models, this is not necessary.

In this situation, much depends on the design of the fan. The motor in the body is fixed most often on four bolts. After disconnecting the motor, you need to inspect its contacts. If they are visible on the darkening, then the problem is clearly in it. To solve this problem, you will have to purchase a new electric motor and install it in place.

Problems with the capacitor

Condensers in devices are most often broken due to sudden power surges in the network. Repair of the cooling fan in this situation should be started as usual with unscrewing the cover. The motor of the device will have to be disconnected first. There is a condenser in many fans behind the center flange. In order to get to it, you need to unscrew the power supply completely.

In some cases, the crank will also interfere. In this situation, the flange is first removed. The capacitor can only be checked with a tester. In this case, the resistance on conductors is estimated. If the value on the device exceeds 50 Ohm, then the capacitor will have to be replaced.

Checking the stator winding

Problems with the stator winding are considered very serious. Repair of the heater fan in this situation will have to start with a direct inspection of the engine. If the stator burns out, the capacitor may also fail. If the motor contacts are not burned out, then it is intact.

The next step is to test the condenser directly with a tester. When the stator is defective, during work it smokes strongly. It should also be noted that this element can quickly heat up. In any case, it will have to be completely changed. To do this, you need to buy a similar product in the store.

Repair of the control unit

The control units in the fans are installed very differently. Most often in them worm gears break. In this case, the fan unit should be repaired by removing the terminal block. It is not necessary to touch the electric motor. The control unit is located most often under the central flange. In some cases, the way to it is blocked by the lining, which can be removed. Further, in order to repair the fan control unit, it is necessary to completely twist the shaft with a screwdriver.

The next step is to remove the block immediately. To inspect the worm gear, you will have to twist the back cover. Then you can see under it the contact shaft. It is checked with a tester. The resistance parameter must not exceed 50 ohms. Otherwise, the control unit can not be repaired.

Rotor Replacement

The rotor breaks in the fans quite rarely. One of the reasons for this may be overheating of the electric motor. In such a situation, the floor fan must be repaired with the cover removed. The rotor is located, as a rule, on a special gasket. Sometimes he can be behind the shaft. In any case, you have to remove the electric motor with a screwdriver.

Next, inspect the wire that comes from the rotor. If the soldering is in order, then it should be carefully disconnected. It is usually fixed on two screws. To replace the rotor, you need to purchase a similar product. The gasket can be used in this case. When securing the motor, make sure that it does not come into contact with the rotor.

Repair of the diffuser

The diffuser is an integral part of the control unit. It usually breaks due to the fact that the regulator is twisted. In this case, the fan repair should be started by removing the cover from the top. There is no need to touch the electric motor. However, for convenience, the central flange is easiest to disconnect immediately. Otherwise, the control unit to its original location will be problematic to install. After disconnecting the regulator, the control unit must be removed directly.

The diffuser is located on the back side. In some cases, it is attached to a special lock. In order to get it, you just have to knock the base of the element with a knife or screwdriver. Then it can be viewed. Change the diffuser very rarely. In stores, it is usually sold together with the control unit.

Problems with blades

The fan blades are always made of plastic. If a foreign object enters the screen during operation, it can easily be damaged. In this case, repairing the fan with your own hands is very simple. There is no need to remove the rear cover of the device. First of all, you should inspect the mesh of the protective mesh directly. Basically, it is held by a plastic cap. Twist it pretty easily with your hands. After that it will be possible to remove the protective mesh.

The next step is to detach the lining, which holds the blades. You can also do this without using a special tool. With a serious deformation of the blades, it is easier to replace them. If we talk about the small friction of the detail about the grating, then everything can be tried manually. In this regard, the plastic sometimes lends itself, and the blade can be installed in its original place without problems.

Faults with flange

Flanges, as a rule, are installed in plastic fans. If the device falls, they can easily break. In this case, the fan repair should begin with the unscrewing of the back cover. If we consider simple models, their flanges are usually located near the electric motor. However, there are modifications where they are located near the shaft itself. In the first case, there is no need to remove the control unit. However, it is necessary to twist the crank first.

Then the worm gear is removed . After that it will be necessary to disconnect the switch. The flange is fixed mainly on the panel with screws. If it is heavily deformed, then it's easiest to screw it with a screwdriver. However, if the damage is not serious, then it can easily be twisted. If we talk about models where the flange is installed near the control unit, then it should be done differently.

First of all, the clamping bar is released in the fan . Further, the control unit is directly twisted. The next step is to remove the gasket, which is located next to the rotor. Mount the flange in this case with two screws. To replace it, you will need to order a similar part in the service center.

Crank radius

The crank's outreach, as a rule, is accompanied by problems with the shaft. In this situation, the fan repair must begin with the cover removed. Next, you need to do the stator, which is next to the electric motor. Sometimes it can be fixed on a special platform. In any case, you need to twist the nuts with the key. Next, you will see the shaft directly in the fan, under which is the crank.

If it is deformed, then it must first be removed. Cranks are made mainly of stainless steel. Straighten their man is able to independently. However, this part is very small in size, and in this situation it is easier to use the vice. If this problem can not be solved independently, then you will have to contact the service center.

Breakage of the speed switch

The failure of the speed switch is often accompanied by increased noise of the device. In this situation, repair should begin with inspection of the regulator. This element is located near the control unit. In order to get to it, you just need to twist the rear protective cover.

After this, it will be possible to remove the terminal block, which blocks the control unit. The presser bar in this situation can not be touched. However, depending on the design features of the model, the repair plan may vary slightly. After removing the control unit, the regulator is inspected directly.

It happens that the problem is to detach the conductor. In this case, the problem can be solved with a soldering lamp. However, the speed switch can also burn, and then it will have to be replaced. You can order the specified fan component through the service center. Also, there is always the opportunity to ask for help in the workshops.

Reviews

According to feedback, before removing wires from the windings, it is very important to mark them, so that when connecting, do not mix them up. You can take photos before starting the disassembly. They will help in case of problems in the assembly.

Reviews do not recommend repair, if the stator winding is cut off or burnt out. It is more expedient to purchase a new fan.

Owners advise in due time to clean the device of dirt and lubricate bearings and reducer. This will extend the life of the motor.