The home -made cause of the cause does not turn on

Do.It.Yourself floor fan repair. All reasons why not spin and how to disassemble.

The departure of the crank, as a rule, is accompanied by problems with the shaft. In this situation, the repair of the fan must be started by removing the cover. Next, you will need to deal with the stator, which is located next to the electric motor. Sometimes it can be fixed on a special platform. In any case, you need to twist the nuts with a key. Then the shaft will be visible directly in the fan, under which there is a crank.

If it is deformed, then it needs to be removed first. Krivoship are made mainly of stainless steel. A person is able to straighten them on his own. However, this part in size is very small, and in this situation it is easier to use the vice. If this problem could not be solved independently, then you will have to contact the service center.

The engine is noisy, but the blades do not move

Sometimes when the fan is turned on, the sound of a working motor is heard, but the blades remain in place. There may be several reasons.

  • The lubricant on the bearings dried up. You need to disassemble the case, remove the remains of the old material and grease the bearings again. It is better to choose a composition on a silicone basis.
  • The bearings have shifted. Probably the bushings in which they are in, eventually became unusable. Only the replacement of the bushings will help.
  • Malfunction in the engine. The part will have to be carried for repair so that the master checks the resistance on the windings.

Do.It.Yourself floor and desktop fan repair

After detecting a problem with the fan, you can proceed directly to the repair. First prepare the necessary tools and materials depending on the type of malfunction. The first thing that is checked after the diagnosis of the cord, forks and sockets is the serviceability of the electric motor. Often the problem is the microcircuit, so first determine the level of flow rate on the fee and the output from the chip. In the absence of voltage, the problem lies in the breakdown of the microcircuit, which can be replaced.

If the current goes to the microcircuit, and the floor or desktop fan does not turn on, you will have to disassemble the case and check whether the current comes inside. If not, the problem is the electric motor, so you have to give the motor for repair.

  • Disconnect the two wires connecting the electric power and the microcircuit;
  • Also do with 2 wires going from board to the motor;
  • Assume a new microcircuit.

There is an option in which the fan will work without a microcircuit, that is, directly, so the device will be included immediately after installing the cord in the outlet. To do this, do similar actions with wires, but instead of installing the microcircuit, they are connected to each other.

To understand how to make a fan repair yourself, you need to know the principle of operation of the device. Scheme:

  • Asynchronous type, installed on standard floor and desktop fans, has 8 launch and working windings;
  • To launch the phase is shifted by 90 degrees using the capacitor;
  • The launch is carried out after pressing the power button (first the red indicator turns on, after the electric motor begins to rotate);
  • The speed of the rotational moment is affected by a 3-speed switch that has mechanical locks of simultaneous speed switching.

Replacement of the rotor

The rotor is usually on the gasket under the lid or behind the shaft, so the engine is removed for its repair or replacement with screwdrivers. The first thing to do is to inspect the wiring that can be the cause of the malfunction. If there are no defects on it, you will have to change the rotor, since it is not possible to repair it yourself. Be sure to write down the number of the device and purchase exactly the same model.

  • Disconnect the wire leading to the rotor;
  • Unscrew the screws;
  • Remove the device;
  • Put a new rotor, tightly screwed to the base.

If the gasket is not deformed, it is pointless to replace it with a new option. Use the old element. Keep in mind that the rotor should not touch the electric motor.

How to fix a control unit?

The control unit breaks due to worm gear. This problem can be eliminated independently by following the instructions:

  • Remove the contact block (the motor does not need to be removed);
  • If there are gaskets for the managerial unit, remove them;
  • Twist the shaft with a screwdriver;
  • Remove the control unit;
  • Dismantle the lid behind, opening access to worm gear;
  • To check the performance, use the tester (without breakdown, the resistance parameters should not exceed 50 Ohms);
  • In case of violations, replace the old element with a new.

What to do if the flange broke?

In floor and desktop fans, plastic flanges are used, which are easily damaged, especially when the device falls. Therefore, replacement is required. How to do it:

  • Unscrew the rear cover near the motor or shaft depending on the model;
  • Remove the crank;
  • Disconnect the worm gear without removing the control unit;
  • Remove the switch;
  • Twist the screws from the flange and disconnect it;
  • In the reverse order, install the new flange.

If the model involves the location of the flange near the managerial unit, then first release the clamping bar, then twist the control unit, remove the gasket located near the rotor.

Fixing of the diffuser

Diffuser is in the control unit. The reason for its breakdown is to twist the regulator. Change it as follows:

  • Remove the top cover without touching the engine;
  • Disconnect the central flange;
  • Remove the control unit;
  • Remove the diffuser from the rear (Put the base with a screwdriver or knife);
  • Replace the new element.

It is problematic to buy a diffuser separately in stores, as it is equipped with a control unit, so in this case the entire block is most often changed.

Coler repair

If a part with a propeller and blades is broken, use the following tips:

  • With the usual deformation of the impeller against the background of overheating, it is necessary to extract the propeller, slightly warm the blades and leve so that they do not touch the protective grid of the fan.
  • If the blades are broken, you will have to buy a new propeller and install it yourself.
  • If a small part of the cooler is torn off, the fragments can be glued with reliable glue.

How to repair a capacitor?

The capacitor usually breaks due to unexpected voltage drops in the electric network. The part is located behind the central flange. The cause of the malfunction is the absence of a phase shift or a power to receive a winding. The main feature is no rotation. The capacitor malfunction is checked using a multimeter (measurement mode. Resistance).

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The unit does not turn on

In this situation, there may be 2 options: a light bulb that means the readiness of the unit to work, can be caught or not. Depending on this, the algorithm for diagnosis of the breakdown will differ.

The bulb does not burn

If, after the device is turned on, the bulb located on its case does not light up in the outlet, and it does not start, then, first of all, it is necessary to check if there is a voltage in the outlet. It is done simply: take any electrical appliance and include in this outlet. If the device has earned, then you need to look for a malfunction in an electric fork and cord.

To check the fork, spin it and check the reliability of the connection of the wires to the terminals. To check the cable, it is necessary to disconnect it from the contact pad of the device and “call” the tester. If a cliff is detected in the cable veins, it should be replaced.

The bulb is on fire

The reason for this behavior of the unit, when the indicator bulb burns, but the fan does not work and no sounds can be heard, it can be caused by the blocking of the block with the buttons. To check the buttons, you need to disassemble the button unit located on the floor fan stance or stand near the desktop. But, before disassemble the device, make sure that it is turned off out of the outlet.

The work of buttons is very simple: there is a “vkl” and “off” position. Using the tester, check the “output” and “input” on each key.

If a faulty button is detected, it will not work to repair it. Therefore, the switch should be replaced or the connection is directly. This approach to solving the problem will help start the unit into work if you are far from the store, for example, in the country.

Faulty speed switches can also cause why the fan does not turn on. To check the regulator, you will need to put it in the maximum position and check the “entrance” and “output” using the same tester.

Why the fan does not work

In total, 5 main reasons for the failure of floor fans can be distinguished:

The main problem of cheap models, which for some reason few people pay attention to-incorrect casting blades. Because of this, an imbalance occurs, bearings are broken, gaps increase.

You can’t influence this in any way, as you already bought a fan with such an initial defect. Sometimes it seems to work, the impeller rotates normally, but does not blow.

That is, there is no cooling air flow from it. Why is it happening?

Due to the wrong corner of the attack of the blades. Its petals are deformed and drive an air flow in a circle, and do not throw it out.

This effect can appear over time, after the fan stood for a long time under the straight rays of the sun and its impeller heated, began to gradually change its shape.

It is treated only by replacing the impeller with a new.

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The most common problem is the dried lubrication or its lack. The fan begins to wedge, lose speed and, as a result, the load on the engine increases. Vetrodui no longer works in full force.

The engine wound up with a thin wire of 0.2mm begins to heat up and the windings gradually burn out.

How a similar defect is detected? In this case, the fan ceases to rotate. He is buzzing, but the impeller does not spin.

It also happens that it starts only at 3 speed, and does not react to the first two at all. He just does not have enough power to turn the shaft.

In order to start it, you have to sprout like on old aircraft in an impudent.

By the way, the same symptom may be with damage to the start.Up capacitor. How to find out without devices what reason is to blame for the breakdown?

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To do this, at least get to the engine shaft, removing the protective casing and blades. If the shaft by hand will rotate with great difficulty, then blame dirt and dried grease.

And if he spins easily and he has inertia, then most likely a conder was covered. Symptom. Turned on the fan in the outlet, but it does not spin. At the same time, scroll into a impudent motor and it starts.

If you hold the fan blades when working with your hand, it can stop again. The capacitor is checked by a multimeter if it has an appropriate capacity measurement scale.

To replace, select a new conder according to the same parameters as indicated on the body of the old.

By the way, a dried.Up capacitor has not yet been fully affected, also affects the moment. If you notice that they fell from you and the fan began to spin slower, this is a bell to check it.

The problem of tight rotation is solved by a new lubricant of bearings. Here are used, the so.Called sliding bearings. Someone calls them bushings.

Apply balls in such designs is a little expensive, and they thunder over time, they be healthy. For repair it is not at all necessary to disassemble the entire engine entirely. It is enough to unscrew a few cogs and spray to the right places with the universal aerosol WD40.

How to get to the bushings without removing the engine? To get started, unscrew the central screw on the back wall of the protective casing.

Another self-tapping screw is hidden in the adjustment button for turning or stopping at the fan head.

After that, the back cover is easily removed from its place. What is under it? Here you can see the gearbox of the rotary mechanism that gives rotation to the whole head.

A special thrust is suitable for him from below.

The starting condenser of the engine is fixed on top.

By the way, keep in mind that in different models it may not be there. In this case, look for it near the speed buttons.

To access the engine bearing, you will need to remove the gearbox. It is attached on three screws, and properly propped up with a traction.

Twist the screws and disconnect the craving. After that, the gearbox is removed from the shaft and you get access to the rear hub.

You don’t need to unwind anything else and disassemble. The rest will be made for you.

How to disassemble the fan. Instructions with a photo

How to get to the bushings without removing the engine? To get started, unscrew the central screw on the back wall of the protective casing.

Another self-tapping screw is hidden in the adjustment button for turning or stopping at the fan head.

After that, the back cover is easily removed from its place. What is under it? Here you can see the gearbox of the rotary mechanism that gives rotation to the whole head.

A special thrust is suitable for him from below.

The starting condenser of the engine is fixed on top.

By the way, keep in mind that in different models it may not be there. In this case, look for it near the speed buttons.

To access the engine bearing, you will need to remove the gearbox. It is attached on three screws, and properly propped up with a traction.

Twist the screws and disconnect the thrust. After that, the gearbox is removed from the shaft and you get access to the rear hub.

You don’t need to unwind anything else and disassemble. The rest will be made for you.

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Put a narrow guide tube on the WD40 spray and several times pash in the gap between the shaft and the bearing.

After spraying WD40, turn the shaft with your hand in different directions and move it a little forward and forth.

Excess thickened lubricant, extraneous garbage and dust will gradually go outside. These excess dirt are easily removed with cotton sticks.

If you have a thick lubricant of the type of Cyatim or Litol, it is advisable to apply it to the gearbox worm. After these cleaning procedures, drip on the bearing on the outside a few drops of oil for sewing machines.

Just do not need to apply it through the chur a lot. Otherwise, it subsequently spreads in all places and dust sticks on it, turning back into dirt. As a result, you will again receive a wedge and a problem with fan rotation.

Near bushings in separate models put felt washers. They are impregnated with oil and when heated, the oil flows into the shaft, lubricating it.

All in the reverse sequence. Traction. Three gearbox screws. External cover.

By the way, if through the chur tighten the central self.Tapping screw on the back cover, and this is exactly the screw, not the screw, it can pass through the plastic of the rotary gearbox and rest in the shaft.

You will again have problems with turnover and jamming. Sometimes the reason for the breakdown is banal and unpredictable.

I figured out the rear bearing, then go to the front of the fan. Here in the center there is a protective cap.

It turns off, attention. Clockwise, since the thread is left.

Throw it away and remove the propeller from the shaft. You get access to the front handle bearing.

The principle here is the same. First, squeeze out and soften the old grease and dirt with a vaeshka, and then apply a new one.

After that, put the propeller back and close the lid. After completing the repair, turn on the fan at high speeds, and letting it work for several minutes, switch to the speed that is required.

Basic malfunctions and repair

The listed list of malfunctions of microwave ovens is not exhaustive, it only reflects the most common breakdowns. You can fix all these malfunctions with your own hands.

Problem Possible reasons Decision
The microwave does not turn on There was a fuse fuse, only replacement After replacing the fuse, checking the serviceability of the transformer and the safety diode of the transformer
The clock is working, The miniature door switch does not work Repair or replacement
The microwave oven periodically turns off and turns on with an interval of several minutes Fan.Cooler fan, the fan switching fan, and the ventilation holes are closed Small repair or replacement
During work, sparks are visible and the smell of Gary is heard Sludge breakdown in a investigation of pollution Replacement
The microwave warms poorly low voltage on the network or loss of emission of magnetron. The use of voltage stabilizer Do.It.Yourself repair by increasing the number of turns or replacement of the magnetron
LCD display displays not all segments, glare and spots Damaged screen or processor. If the microwave does not work, then the processor is precisely Replacement
The touch panel stopped working Damaged by conductive tracks Do.It.Yourself repairs by overlapping wires or replacement
The pallet rotates with jerks Roller grooves, engine malfunction Do.It.Yourself repair by cleaning roller grooves, engine replacement
The light burns, the pallet rotates, the microwave does not warm Strong voltage drop in the network, breakdown in the transformer power circuit, magnetron is broken Installation of voltage stabilizer, repair by calling the transformer power circuit by the tester, elimination of malfunctions, replacement of the microwave generator
The buttons on the control panel are not turned on Do.It.Yourself repair by testing by a tester, ticking contacts or replacing buttons
During the operation of the microwave, a rumble is heard Fan fan, double.Stroke diode or transformer Replacement
The microwave works without disconnecting Malfunctioning the voltage supply relay (clicking contacts) Disconnect power, replace. There may also be a problem in the processor or relay control circuit. Self.Repairs by checking by an ohmmeter, if the chains are in order, replacing the processor module

With your own hands, you can fix the microwave oven microwave, but you can properly operate it and this significantly increase the period of impeccable service.

In every second kitchen, a microwave is used for quick heating of food, it is easy to use and saves a fairly large amount of time. Repair of microwave ovens Samsung, Panasonic, LG and others is easily carried out with your own hands at home, without contacting service centers.

Despite the external complexity of the work, any microwave consists of fairly simple parts: a heating chamber, magnetron, waveguide and winding, which is necessary to power the device. Camera and magnetron are interconnected using a waveguide. In addition, a transformer and its winding are also installed in the furnace. The principle of operation is as follows: when the microwave oven is included in the network, the voltage enters the primary winding of the transformer. Along with this, energy is also brought to the secondary winding responsible for heating the cathode. Both windings are very well isolated.

It should be noted that this device uses a doubling of the voltage, which is why the food heats up at such a speed. For this function, a capacitor is used, to which the straightening diode is parallel. To control the time, a timer on gears is used, which helps to control the duration of heating. A special temperature sensor has a similar function.

Given that this device is an increased source of danger, it built a whole system that is responsible for the safety of use. This includes the phase and power protection relay, which stop the microwave oven during voltage surges or open door.

The most frequent problems faced by the owners of microwave furnaces are:

Repair and diagnosis of microwave ovens

Typical floor fan device

On the agenda, the repair of the floor fan with your own hands! You should start small: the simplest fans do not have a ground terminal. The device does not have the degree of electrical safety. The device of the floor fan includes a housing made of plastic. Water will get inside. Expect a good shake. The floor fan of the specified variety cannot be used near the water. Starting with an aquarium with fish, ending with a flower vase. Particularly dangerous where young children live. The contraption will fall, the child will guess to pour into the milk Draw the conclusions yourself:

When the floor fan falls with a high degree of probability, nothing will happen. We plunge into the design. So far, we will leave the features of the control of the engine speed and button to the side. Let’s talk about the gearbox. Krasnodar floor fan carries one asynchronous condenser engine. The front side of the shaft through the pin, the nut with the left thread is connected to the blades, the back goes to the gearbox formed by two gears, one double.

The shaft is equipped with a thread, clinging, rotating, large wheel teeth. The moment is transmitted to the small wheel that drives the flywheel. The gear of a crooked-shaped mechanism with a diameter in the hand, so rotation is inferior to the speed of the initial shaft of an asynchronous engine.

Through the cardan gear, the crank is hooked by the leg, the engine housing is planted on the axis. When the shaft of the asynchronous engine rotates, the blades move smoothly in one or two. However, you can stop the process. In the double gear, the rolls are attached to the larger gear with two balls with a spring inserted into a through hole. If you pull the regulator handle directly connected to the axis, the latch slides up. The connection between the gear, the shaft, the rotation is stopped. The mechanism implements protection against the fall: six grooves are cut along the internal landing hole of the drive gear. Balls fit. The provisions are six, the mutual transition is accompanied by a click, the axis is turning relative to the gear, the balls beat along the walls, slipping into the grooves.

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Clicks are heard, there is a high probability. The floor fan has fallen. The drive jammed, working, clicking, protective mechanism, protecting the motor from combustion.

We believe that the regime is unprofitable to the floor fan, not to turn off the device, the engineer.Guard of the motor will certainly break. The gearbox is attached with three bolts to the engine, cut through a pair of lubricants through which you can flavor plastic gears. Concerns the drive, rotating with the speed of the asynchronous engine.

Headache, how to fix the floor fan and collect. We see the alignment: the mutual position of the gearbox, the legs through the transmission, the head of the floor fan will move incorrectly relative to the frontal plane. It can be annoyed. Connection the gearbox, check the product by connecting power. Caution, so as not to hit the current, try to visually determine the correctness of the assembly.

The engine from the floor fan. The floor fan does not turn on, what to do

In hot weather, the floor fan is an indispensable device that can create coolness, in the absence. The composition of any fan includes a large number of moving parts subject to wear.

The fan and electric motor are mounted at various ends of the same shaft. There is also a device that provides turns in different directions.

Periodically, various malfunctions arise, and then it is necessary to repair floor fans.

All fans have a typical device, therefore, their malfunctions are also mainly the same.

Deformation of the fan blades

Occurs quite often, since the propeller itself is made of plastic. Blades can be deformed under the influence of high temperatures. As a result of deformation, the blades are touched by the protective net, and there is a characteristic unpleasant noise. Usually deformation is eliminated manually, otherwise, the blades and protection will very quickly become completely unusable.

Deformation of the protective fence

It usually appears as a result of the fall of the floor fan. The fence itself is made of relatively thin metal wire and includes two parts. The front and rear.

The front part is very easy to remove, but with the back you will have to tinker. The propeller is removed from the shaft of the electric motor, after which a large plastic nut is unscrewed and then the fence itself is removed.

After straightening, the protection is collected in the reverse order.

Turning to the sides ceases

The main reason for this may be a disconnected crank. It is necessary to disassemble the body of the device and tighten the mounting screws if they are weakened or unscrewed. In addition, interruptions may occur in turning mode.

To clarify the reason, the gear of the gear of the gearbox is checked, as well as the operation of the switch. If necessary, the gearbox is lubricated with a special lubricant. In the case of severe wear of the part, it is recommended to replace.

In the absence of parts for replacement, the fan can be used in normal mode, without turning on the turns.

The circuit breaker malfunction

Can cause interruptions in work. To check its condition, you need to extract the switch and determine the state of contacts. If necessary, contacts are cleaned with sandpaper.

Easy fix when fireplace insert won’t turn on

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The fan does not work at all

In this case, you should check the serviceability of the electric motor. If it turns out that the electric motor is defective, then the repair of floor fans, in this case, is economically impractical.

I will not dwell on mechanical malfunctions such as the repair of impeller, body, rotation mechanism, etc. P. To eliminate these breakdowns, it is simply necessary to restore a worn or broken part or replace with a new.

This article will consider issues on the repair of the electrical part of the fan, in which an electric motor with hum, unpleasant smells of the paired or seals are not turned on or works.

For consideration, a more complex model of flooring will be taken. Built-in exhaust fans are much easier, due to the lack of speed switching unit, so it is even easier to repair them.

But repairs, given the price of a simple model of an exhaust fan without bells and whistles, is inappropriate.

In order to find the cause of the fan malfunction, it will be necessary to disassemble it. It will be quite simple and fast to do it with your own hands.First, remove the protective grill, then the blades or impeller of the fan, which is fixed by the nut. Next, it is necessary to remove the second part of the protective lattice and unscrew the lid screws.

Search and elimination of malfunctions during the repair of a household fan

Before proceeding with your own hands, it is necessary to study the scheme of the device. As a rule, an asynchronous electric motor is placed in the floor fan, consisting of eight windings (working and starting). For a successful launch, a phase shift is required by 90 degrees. For these purposes, the capacitor is installed.

The device begins to work after pressing the turning button, after which the indication light lights up and the engine starts, the rotation speed depends on the switch of the windings, for which the switch 3 of the speeds with mechanical locking of the simultaneous turning on several buttons, in which short circuits may occur, is possible.

Before proceeding to check the electric motor:

  • Immediately you need to check the serviceability of the connection cord to the electrical outlet. To do this, you must first disassemble the switch block, and then, in compliance with electrical safety measures, check the presence of 220 volts on the contacts of the light bulb with a multimeter.
  • Check the serviceability of the capacitor according to this instruction.
  • Call integrity and check the reliability of all contacts of wires and connections in the circuit. Barling instructions.
  • If a rumble or noise is heard during the fan, then lubricate the plastic parts inside the gearbox with a lithol or solidol through the holes, which are specifically provided for in it.
  • Check the presence of 220 volts at the output from the switch button on.

Repair of the fan electric motor

Do.It.Yourself repair of the electric motor must start with the lubrication of bearings, very often after that the fan begins to work normally. The shaft of the motor rotates in plastic bushings.

For lubrication, machine oil is suitable- drop a couple of drops of oil of oil under the slope so that it will flow into the inside of the sleeve, and then unit the shaft back and back along the axis until it starts to lightly rotate easily.

The probability of breaking the engine rotor is relatively small and in my practice of repairing household appliances has not yet been found, because the Roth (current) is induced in the rotor under the influence of stator windings.

Often in the electric motors of household fans there is a break in one of the stator windings. If at least one winding is cut off, then the engine will not work at all. To check, quite sharply twist the blades clockwise. Just immediately remove your hand from the blades so that you would not get an injury.

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