Repair of floor fan with my own hands. All the reasons why it does 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 should begin with the removal of the cover. Next, it will be necessary to deal with the stator, which is near the electric motor. Sometimes it can be fixed on a special platform. In any case you need to tighten the nuts with a wrench. Next you will see the shaft in the fan, under which the crank is located.
If it is deformed, then it must be removed first of all. Cranks are made mostly of stainless steel. To straighten them a person is able to do it himself. However, this part is very small in size, and in this situation it is easier to use a vice. If you can not solve the problem yourself, you have to call a service center.
Prevention is better than cure
Ideally, the condition of the heating element and the anode should be monitored regularly. And in time to remove limescale. as you may have noticed, it is its deposits provoke a large number of breakdowns. Manufacturers recommend a maintenance service once a year. In the process inspects:
- The degree of wear of the magnesium anode, if necessary its replacement. On average it lasts for a couple of years, but fluctuations of 1-3 years are quite acceptable (depends on the quality of water in the pipeline);
- check the amount of limescale on the heating element(s) and remove it;
- check the sediment on the walls and the bottom of the tank, if necessary. cleaning.
Broken fan motor diagnosis for repair
Ideally, a comprehensive maintenance should be carried out once a year. But it also depends on the condition of the water and the frequency of use.
Factors that accelerate the need for cleaning:
- intensive daily operation;
- water in the pipeline is very hard (with a lot of impurities). in this case clean it every 6-9 months. An indirect, but quite telling sign of hard water is the frequent appearance of white plaque on faucets and faucets. If the water is soft, with normal m impurities, the frequency increases to once every 2 years. The exact composition will show laboratory research;
- High temperature of heating. above 60°C.
- Takes longer to heat than before;
- The power consumption has increased;
- Yellowish water with an unpleasant odor comes out when you open the faucet;
- heats noisily (hissing);
- The walls of the housing become too hot;
- the boiler turns on and off more often than before.
How to remove scale
You understand by now that the mass of limescale on the heating element is the cause of many problems. What to do? First, use the mode “Eco” (the temperature of heating does not exceed 60 ° C), it extends the life of the main elements of the boiler
The fact that the water temperature of the order of 50-55 ° C is very favorable for the reproduction of various kinds of microorganisms. Considering that most bacteria die at temperatures over 65-70 °, so from time to time set the thermostat to “hotter. For example, once a week or two until the maximum temperature and the automatic shutdown (at least do not use water for an hour, give time for the bacteria to “boil”). The issue is removed only if you have a well at home, supplying water from a depth of 250 meters and sealed system. For cleaning it is better to contact a service center, but you can try on your own:
disconnect from the mains, drain the water; unscrew the fastening nuts of the flange, take out the TEN; clean it mechanically (but be careful: if the old TEN is already worn, its already quite thin walls became even thinner, so it is easy to damage carelessly) or let it sour in water with the addition of citric acid.
Repair of floor and table fans with your own hands
After detecting the problem with the fan you can proceed directly to repair. First, prepare the necessary tools and materials depending on the type of fault. The first thing to check after diagnosing the cord, plug and socket is the serviceability of the electric motor. Often the problem is in the chip, so first determine the level of current flow to the board and the output from the chip. If there is no voltage, the problem is in the chip breakage, which can be replaced.
If there is current to the chip, but the floor or table fan does not turn on, you will need to disassemble the case and check whether the current flows inside. If not, the problem is in the electric motor, so you will have to give the motor for repair.
- disconnect the two wires connecting the power plug and the chip board;
- Do the same with the 2 wires going from the board to the motor;
- attach the new microcircuit.
There is an option in which the fan will work without the chip, that is, directly, so the device will turn on immediately after plugging the cord into the socket. To do this, do the same with the wires, but instead of installing the chip, connect them to each other.
To understand how to repair the fan yourself, you need to know how the device works. Schematic:
- Asynchronous type motor, installed on standard floor and table fans, has 8 starting and working windings;
- to start, the phase is shifted by 90 degrees by means of a capacitor;
- start up after pressing the power button (first the red light turns on, then the electric motor begins to rotate);
- torque speed is affected by a 3-speed switch that has mechanical interlocks for simultaneous speed switching.
Replacing the rotor
The rotor is usually on the gasket under the cover or behind the shaft, so to repair or replace it, remove the motor with screwdrivers. The first thing to do is to inspect the wiring, which may be the cause of the malfunction. If it does not show any defects, you will have to replace the rotor, as repairing it yourself is not possible. Be sure to note down the number of the device and buy the exact same model.
- disconnect carefully the wire leading to the rotor;
- unscrew the screws;
- Remove the fixture;
- Attach the new rotor, screwing firmly to the base.
If the gasket is not deformed, there is no sense in replacing it with a new one. use the old element. Please note that the rotor must not touch the electric motor.
How to repair the control box?
Control unit is broken because of the worm gear. You can fix this problem yourself by following the instructions:
- Remove the contact block (no need to remove the motor when doing this);
- if there are gaskets for the control unit, remove them;
- unscrew the shaft with a screwdriver;
- Remove the control unit;
- Remove the cover on the back, opening the access to the worm gear;
- use a tester to check the functionality (without breaking the resistance parameters should not exceed 50 ohms);
- in case of irregularities, replace the old element with a new one.
What to do if the flange is broken?
Floor-standing and table-top fans use plastic flanges that are easily subject to breakage, especially if the unit is dropped. therefore it needs to be replaced. How to do it:
- unscrew the rear cover near the motor or shaft depending on the model;
- remove crank;
- disconnect the worm gear without removing the control box
- remove the switch;
- unscrew screws from flange and detach it;
- install the new flange in reverse order.
If the model assumes a flange near the control box, then first loosen the clamping plate, after twisting the control box, remove the gasket located near the rotor.
Repair the diffuser
The diffuser is in the control box. The cause of its failure is twisting of the regulator. To replace it, proceed as follows:
- Remove the top cover without touching the motor;
- Disconnect the center flange;
- remove control box;
- take out the diffuser from the rear (pry the base off with a screwdriver or knife);
- Replace with new element.
In the stores it is problematic to buy a diffuser separately, since it is complete with a control unit, so in this case most often the whole unit is replaced.
If the part with the propeller and blades is broken, use the following tips:
- If the normal deformation of the impeller on the background of overheating, you must remove the propeller, slightly warm the blades and align 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 debris can be glued with a reliable glue.
How to Repair a Condenser?
Capacitor usually breaks down due to unexpected voltage fluctuations in the electrical network. It is located behind the center flange. The cause of the problem is a lack of phase shift or no power to the winding. The main sign. no rotation. Capacitor failure can be checked with a multimeter (measurement mode. resistance).
Polaris psf fan repair
When repairing the fan with your own hands, you should also “test” the electric motor in search of a breakdown. If it is defective, the unit will not turn on and will emit a hum. Measure the resistance of the two stator windings by first disconnecting the wires leading to them, as shown in the following diagram.
Repair of a floor fan. Main fault.
As you can see, the resistance is also within the normal range, as its value is 1215 Ohm (1.2 kOhm). Otherwise the machine hums, but will not start. In such a situation, it will be necessary to rewind the motor in a special workshop.
The machine doesn’t start
In this situation, there can be 2 options: the lamp, which indicates the readiness of the unit to work, can light up or not. Depending on this, the algorithm for diagnosing the failure will be different.
The light bulb does not light up
If after turning on the device in the socket the lamp located on its body does not light up, and it does not start, then, first of all, you need to check whether there is voltage in the socket. It’s easy to do: Take any electrical appliance and plug it into this outlet. If the device works, then we must look for faults in the electrical plug and cord.
To check the plug, unscrew it and check that the wires are securely connected to the terminals. To check the cable, it is necessary to disconnect it from the contact block of the device and “probe” it with a tester. If you find a break in the cable strands, it should be replaced.
Button light is on
The cause of such behavior of the machine when the indicator light is on, but the fan does not work and no sound is heard, may be caused by a breakdown of the unit with the buttons. To check the buttons, you will need to disassemble the push-button assembly located on the floor fan stand or the stand on a tabletop unit. But, before you disassemble the machine, make sure it is unplugged from the outlet.
The operation of the buttons is very simple: there is an “on” and “off” position. It is necessary with the help of a tester to check “output” and “input” on each key.
If you find a faulty button, it cannot be repaired. That’s why the switch should be replaced or the connection should be made directly. This approach to solving the problem will help to start the unit in operation if you are far from the store, for example, in the country.
Faulty speed switches can also be the reason why the fan does not turn on. To check the regulator, you will need to put it in the maximum position and check the “input” and “output” with the same tester.
Flanges, as a rule, in fans are installed plastic. If the device falls, they can easily break. In this case, the repair of the fan will have to start with unscrewing 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 at the shaft itself. In the first case, there is no need to remove the control unit. However, you will have to twist the crank first.
Next, the switch must be disconnected. The flange is mainly fastened to the panel with screws. If it is severely deformed, it is easiest to pick it up with a screwdriver. However if the damage is not serious you can easily twist it. If we talk about models, where the flange is installed near the control unit, then you should do it differently.
First of all, in the fan is released Next, the control unit is twisted directly. The next step is to remove the gasket, which is located near the rotor. The flange in this case should be attached by two screws. To replace it, you need to order a similar part from the service center.
Very often customers ask about water leakage
The working cooler suddenly begins to leak inside, under it forms a puddle of water. In 99% of cases the reason is in a defective bottle. there is a microcrack in it through which the air is sucked into the system. the cooler tanks overflow and begin to leak over the edge. It is a defect in the bottle, not the cooler. You just need to replace the bottle with another one, drain 1 liter of water from each faucet and the problem is solved. You do not need to take the cooler to the service center or call a specialist. everything is solved by simply replacing the bottle.
If the damage is more complicated and simple lubrication does not help, you have to take apart the fan in detail.
First do all the manipulations of disassembly as above. After removing the propeller, unscrew the plastic front locknut that is located right behind it and remove the whole protective frame.
In the hands you have the engine itself and the leg, which are the power wires and pushbutton mechanism.
Disassemble this leg by removing the 6 self-tapping screws.
First of all you need to check the soldered wires. It is possible that one of them, or even a few fell off or burned out.
If all is intact, how to figure out which wire goes where and what it is responsible for? Start by checking the two leads on the power plug.
One of them, let it be black (as in the photo below), through the light bulb goes directly to the fan motor.
The second wire goes to the lower terminal of the dial switch (0 button).
Then you have to press the corresponding buttons. 1st speed, 2nd speed, 3rd speed. and short circuit these or those contacts of the switch and thus you can change the speed of the motor.
Each wire from these buttons goes to a different terminal on the winding, with more or fewer turns. By applying voltage to them, you make the propeller spin faster or slower.
Winding shorted or broken wires
If the damage is more complicated and simple lubrication does not help, you have to take apart the fan in a more detailed way.
First do all the disassembly machinations as above. After you remove the propeller you unscrew the plastic front locknut which is right behind it and take off the whole protective frame.
In the hands you have the motor itself and the leg, in which the power wires and the button mechanism is located.
Take that leg apart by removing the 6 screws.
First of all check the soldering of the wires. It is possible that one of them, or even a few have fallen off or burnt out.
If everything is intact, how to figure out which wire goes where and what it is responsible for? Start the test with the two wires from the power plug.
One of them, let it be black (as on the photo below), through the light bulb goes directly to the motor of the fan.
The second wire goes to the lower terminal of the dial switch (button 0).
Then, by pressing the corresponding buttons. 1st speed, 2nd speed, 3rd speed. one or the other contacts of the switch are closed, and thus the speed of the motor is changed.
How to Fix a Broken Tower Fan. Very Easy
Each wire from these buttons goes to a different terminal on the winding, with more or fewer turns. Applying voltage to them, you make the propeller spin faster or slower.
The motor from the floor fan. The floor fan doesn’t turn on, what to do
In hot weather, the floor fan is an indispensable device that can create coolness, in the absence of. Any fan includes a large number of moving parts that are subject to wear and tear.
The fan and the electric motor are mounted on different ends of one shaft. Here is also a device that provides rotation in different directions.
From time to time, various malfunctions occur, and then it is necessary to repair floor fans.
All fans have a typical device, so the problems they have, too, mostly the same.
Fan blade deformation
Happens quite often, because the propeller itself is made of plastic. The blades can be deformed by high temperatures. As a result of deformation, the blades catch on the protective grid, and there is a characteristic unpleasant noise. The deformation is usually repaired manually, otherwise, the blades and guards will fall into complete disrepair very quickly.
Deformation of the safety guard
Appears, as a rule, as a result of a floor fan fall. The guard itself is made of relatively thin metal wire and includes two parts. front and rear.
The front part is very easy to remove, but the rear part needs some fiddling. The propeller is removed from the motor shaft, then the large plastic nut is unscrewed and then the guard itself is removed.
After straightening, the guard is assembled in the reverse order.
Swiveling to the sides stops
The main reason for this may be a detached crank. Disassemble the unit housing and retighten the fixing screws if they are loose or unscrewed. In addition, in the turning mode can be intermittent.
To find out the cause, check the engagement of the gear gears as well as the operation of the switch. If necessary, the gearbox is lubricated with a special grease. In the case of heavy wear and tear it is recommended to replace the part.
If there are no parts to be replaced, the fan can be used as usual without turning on.
May cause intermittent operation. To check its condition, it is necessary to remove the switch and determine the condition of the contacts. If necessary, the contacts are cleaned with emery paper.
The fan does not work at all
If this is the case, check if the electric motor is in good condition. If it turns out that the electric motor is defective, the repair of floor fans, in this case, is not economically feasible.
I will not dwell on mechanical failures such as repair of impeller, casing, turning mechanism, etc. п. To fix these failures, you just need to repair or replace the worn or broken part with a new one.
This article will address electrical repair issues with the fan not turning on or running the electric motor with a hum, foul smelling fumes or jamming.
For consideration we will take a more complex model of floor standing version. Built-in exhaust fans are structurally much easier, because of the lack of speed changer, so they can be repaired even easier.
But the repair, given the price of a simple model exhaust fan without frills is inexpedient.
In order to find the cause of the fan failure it will be necessary to disassemble it. To do it with your own hands is quite simple and fast.Firstly we remove the protective grill, then the fan blades or impeller, which is fixed by the nut. Next, you need to remove the second part of the protective grid and unscrew the screws of the cover.
Troubleshooting when repairing a domestic fan
Before proceeding to repair with your own hands it is necessary to study the circuit diagram of the device. As a rule, an asynchronous motor, consisting of eight windings (operating and starting) is installed in the floor fan. A phase shift of 90 degrees is necessary for a successful start. A capacitor is installed for this purpose.
The device will start working after the button is pressed, after which the indicator lamp will light up and the motor will start, the rotation speed of which depends on the winding switching scheme, for which the 3-speed switch with mechanical interlocking of simultaneous switching of several buttons is responsible, which can cause the occurrence of short circuits.
Before proceeding to check the electric motor:
- Immediately it is necessary to check the serviceability of the connection cord to the electrical outlet. To do this you must first disassemble the switch block, and then with observance of electrical safety measures multimeter check the presence of 220 volts on the lamp contact.
- Check the condition of the capacitor according to these instructions.
- Test for continuity and check the reliability of all contacts of wires and connections in the circuit. Wire test instructions.
- If you hear a hum or noise when the fan is running, then lubricate the plastic parts inside the gearbox with Lithol or Solidol through the holes provided for that purpose.
- Check for 220 volts at the output from the on button of the switch.
Repair of electric motor of fan
Repair of electric motor with your own hands should begin with lubrication of bearings, very often after that the fan begins to work normally. Motor shaft rotates in plastic bushings.
Lubrication is best accomplished with machine oil-drop a few drops of oil into the shaft at an angle so that it sinks into the hub, then rotate the shaft back and forth along the axis until it begins to rotate easily.
The probability of motor rotor failure is relatively small and in my practice of repairing household appliances so far has not met, because in the rotor is induced EMF (current arises) under the influence of the stator windings.
Often there is a breakage in one of the stator windings of a domestic fan motor. If even one winding is broken, then the motor won’t run at all. Just twist the blades sharply clockwise to check. Just take your hand away from the blades right away so you don’t get hurt.