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.
reasons why the floor fan does not work. the connection diagram and how to fix it with your own hands.
In the hottest summer days, the only salvation from the exhausting heat, is the usual floor fan.
Not everyone can afford a full.fledged split system or at least a mobile air conditioner.
But unfortunately, this inexpensive and affordable windmill, from time to time breaks. Especially fly like seeds Chinese models.
And there are vast majority in our market. What to do if the fan has stopped rotating and working? What are his main sores and because of which he breaks?
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.
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?
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 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.
Diagnosis of malfunctions
There are 2 types of fault and desktop fans-mechanical and electric. It is to the first simple layman that does not pay much attention, and this leads to a breakdown in the electrical part of the device. For example, if the shaft is jammed, and the equipment continues to work, then this will undoubtedly cause overheating of the electric motor. If the bearing is spent, then the stator winding will be damaged in the future.
Before diagnosing the fan at home, turn off the device from power supply. The unit often does not turn on due to a malfunction of the cord or socket, so first of all, any other device is connected to the power supply. If it does not turn on, then the culprit is a socket that needs to be fixed.
To inspect the internal equipment of the fan, disassemble it, acting according to the following scheme:
Since the breakdown is often associated with a lack of lubrication, be sure to drop a few drops of technological oil on the sleeve.
Take the shaft first in one, then in the other direction for better absorption of lubricants. After that, collect the fan in the opposite direction, turn on the device and check for performance.
clearly about how to disassemble the fan and conduct diagnostics of malfunctions, see this
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.
DIY Fan repair. determining the causes and ways to eliminate various malfunctions
The broken fan should not be immediately thrown away, the most reasonable will be to understand the reasons and, if possible, repair the device. Often the fan malfunctions are not related to breakdowns, but simply require banal cleaning and lubrication.
Some types of mechanical damage can be eliminated independently by replacing the failed part. It is more difficult to repair floor or desktop models with a more complex design. Since fans are included in most modern cooling and air conditioning devices, each case is individual. We will consider only the most common causes of breakdowns and ways to eliminate them.
Damage of household floor fans
The approach to repairing floor or desktop fans must be rational. The presence of blocks of speed adjustment, the angle of inclination and rotation of the fan significantly complicates the structure. The main task is to identify the cause. If the problem is simple, then you can try to carry out repairs with your own hands.
The fan is noisy, but the blades do not rotate
The most common breakdown of floor fans is the situation when the device makes noise, but the blades remain motionless.
- The lubrication of the bearings has dried or thickened. It is simple to identify the reason. The engine is disassembled and the presence and condition of the lubricant is checked.
- The bearing attachment to the shaft shifted. This is due to the development of the resource of bushings that are made of bronze or brass.
- Electricifier malfunction. For verification, it is necessary to disassemble the engine and check the resistance on the windings of the housing and the anchor.
- Loss of capacity due to failure of the capacitor. It is necessary to check the capacitance of the capacitor by the tester.
If the cause is greased, you need to remove the remaining lubricants, cleaning the parts with gasoline, and pour fresh machine oil into the bushings. Carefully ensure that the oil does not get to the engine windings.
In the case of the production of bushings, you need to look for new ones in the store or take from another non.working device. Restore worn out will not work.
If the electric motor winding is violated, you will have to rewind the workshop or buy a new engine. It is difficult to restore the winding yourself.
In the event of a capacitor malfunction, it is necessary to replace it with a new one from the store. If this is not possible, then it’s easier to purchase a new fan.
The fan makes whistling sounds
Walking sounds may appear a few months after the purchase. The fan buzzes or creaks due to the deformation of the propeller or the weakening of the sliding bearing bearing.
The impact on the blades of direct sunlight or high temperature leads to bends and impaired equilibrium, at the time of rotation.
Similar sounds are also pressed as a result of mechanical damage to the protective grate, to the surface of which the ends of the blades begin to reach.
When extraneous noise appears, the following should be done:
- Disable the device from the power supply;
- remove the protective grill, inspect it for deformations;
- remove the propeller, inspect the blades on possible bends;
- inspect the bearing fastener, check if the bolts are twisted.
The bend of the protective grate can be easily fixed, carefully straightening it with your hands to the desired state.
note! In case of violation of the geometry of the blades, the propeller will most likely have to be replaced, since it is impossible to give the polyurethane the initial form at home.
If the cause of extraneous sounds was the loosening of fasteners, then you just need to wrap all the bolts until the backlash is eliminated.
The device does not turn on
The absence of a fan reaction to pressing the power button may indicate a wiring in the cable, damage to the connection of the cable with the terminals in the outlet or the malfunction of the outlet itself. The button block or the speed buttons themselves can also be damaged.
First of all, you need to check whether the control light lights up when trying to turn on the device.
If the light does not burn, you need to do the following:
- measure the voltage in the outlet by connecting an efficient device to it;
- spin the fork and check if there is damage to the places of accession of the wires to the terminals;
- Disconnect the cable and check it with a testing tester.
In case of violation in the fork, you need to restore the connection of the wires, it is possible to break the terminals. If the violation occurred in the wires inside the cable, it should be replaced with a new.
If the light bulbs lights up, but the fan itself does not work, the following steps should be taken:
- make sure that the device is disconnected from the network;
- disassemble the control panel that is located on the fan housing;
- check the tester all the key contacts for the availability of current conductivity;
- Check the speed controller by a tester.
In case of a breakdown of one of the buttons, you should either purchase a replacement in the radio.locomotive store, or connect directly, bypassing bypassing. If the speed regulator fails, it needs to be soldered, or also replaced with a new.
The fan does not turn
The reason why the fan does not turn left-right is to violate the work of the crank.
To eliminate the breakdown, it is necessary to do the following:
- Remove the back cover by unscrewing the fixing bolts;
- check the connection of the crank with the gear wheel under the gearbox;
- put a crank in place, or replace if it broke.
There may also be a situation when the turns are not fully carried out. In this case, it is necessary to check the move of the gearbox switch along the vertical axis.
In case of violations in its work, it is necessary to disconnect the fixing bolt and grease the shaft, gear and the upper part of the gearbox.
If the plastic gear has worn out, but it was not possible to find the part on sale, then you will have to come to terms with the fact that the fan does not rotate.
When installing the impeller after eliminating the malfunction, you need to follow the rules of balancing, otherwise the fan will not spin in normal mode. The simplest and most convenient way is static balancing.
Diagnosis of malfunctions
There are 2 types of fault and desktop fans-mechanical and electric. It is to the first simple layman that does not pay much attention, and this leads to a breakdown in the electrical part of the device. For example, if the shaft is jammed, and the equipment continues to work, then this will undoubtedly cause overheating of the electric motor. If the bearing is spent, then the stator winding will be damaged in the future.
Before diagnosing the fan at home, turn off the device from power supply. The unit often does not turn on due to a malfunction of the cord or socket, so first of all, any other device is connected to the power supply. If it does not turn on, then the culprit is a socket that needs to be fixed.
To inspect the internal equipment of the fan, disassemble it, acting according to the following scheme:
Since the breakdown is often associated with a lack of lubrication, be sure to drop a few drops of technological oil on the sleeve.
Take the shaft first in one, then in the other direction for better absorption of lubricants. After that, collect the fan in the opposite direction, turn on the device and check for performance.
clearly about how to disassemble the fan and conduct diagnostics of malfunctions, see this
Mechanical malfunctions
To detect malfunctions of the mechanical part of the fan device, pay attention to the following manifestations:
- extraneous sounds (noise, whistles, creaks, etc. P.);
- slow speed of rotation of the blades during operation;
- Difficulties with the rotation of the propeller when the fan is turned off.
Problems in the electric part
The malfunction in the electrician is manifested by the following signs:
- the smell of burning;
- the impossibility of starting the unit;
- slowing down the speed of the propeller mechanism with the device turned on;
- The operation of automatic protective circuit breakers (if they are provided).
Floor vetile connection diagram
A simplified windfield scheme looks as follows.
Typical schemes of most inexpensive 3-speed floor fans are about the following:
Pressing each button is accompanied by the closure of its contact group.
In this case, another contact group at this moment opens.
Sometimes these contacts burn or do not reach their plate. Then you disappear any of the speeds.
This is checked all elementary by the Chinese multimeter, in the mode of the chain.
If you break off the very first wiring or there will be no contact on it, then the fan engine simply will not start. Therefore, with a completely ineffective fan, check first of all.
Unless of course you have convinced before that that the fork itself and the power cord from it are working. It is also caused by the tester.
Put one end of the probes on the pin of the fork, and touch the other on the contact platform on the “0” button. If it is in good condition, there should be zero resistance.
Next, you can check the wires at all speeds in the same way. Contact probe on the fork. another probe on the outgoing wire from the corresponding speed button to the engine.
How to repair National Stand Fan very slow ?
If everywhere in zero, then the switch and wires are workers.
Next, check the second contact on the fork and the wiring that goes directly past the switch to the engine. Make sure here you have a whole cord too.
Only after that you can proceed to checking the windings of the engine itself.
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.
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.
How to repair electric fan rotor hard to rotate( tagalog)
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.
