Those who use washing machines rarely think about the internal structure of the appliance. For many, it is important that the unit works properly. However, in some cases, it becomes necessary to study not only the principle of operation of such household appliances, but also its structure. Most often, such a need arises from malfunctions of the washing machine. The engine is the heart of the unit, which can break at any time. Often, to eliminate the breakdown, it is necessary to replace the motor brushes of the washing machine. What is it and how to change them?
What is it and what is it for
Brushes for electric motors of washing machines are among the most important elements of the system. They are necessary for the normal operation of the device. To be more precise, the motor brushes provide contact. Externally, such parts are similar to devices made of metal and consisting of several parts: a contact element, a spring of the required length and a tip, which is usually made in the form of a cylinder or a cube.
Such brushes are very important in the operation of a washing machine designed for washing clothes. They allow you to transfer to the winding of the rotor of the motor of the washing machine an electric charge from an external circuit. Thanks to this, the washing machine begins to carry out its program.
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Main varieties
Practically in each model of devices for washing clothes, certain electric brushes are installed. There are several varieties of them. The main difference between these elements is the material from which they are made. Brushes for the washing machine motor are usually:
- Electrographic.
- Coal graphite.
- Copper-graphite.
For the manufacture of contacts, copper is usually used, and for the manufacture of springs, steel.
How long can electric brushes last?
For the manufacture of brushes for the motor of washing machines, only strong and reliable material is chosen. The finished product must have a high rate of wear resistance. In this case, carbon electrobrushes are consumables. These parts often change. Why is this happening?
According to manufacturers, carbon electrobrushes can last about five years without replacement. If the washing machine is used in rare cases, then this period is almost doubled. Details regularly serve several years. After that they burn out.For further operation of the washing machine, their replacement is required. It is worth noting that the electrobrushes protect the remaining parts of the washing machine from burnout.
When replacement is required
If the carbon electrobrushes are out of order, then the operation of the unit that launches the laundry, the following failures are noted:
- A sudden stop of the device’s engine, which is not caused by a sudden power outage or by voltage surges.
- Extraneous, unusual sounds during spinning and washing. It can be tapping and cod.
- Decrease in an indicator of power of the engine of the unit. This is indicated by a decrease in the number of revolutions. Linen with such a failure is poorly wrung out.
- During operation of the washing machine, the smell of smoke and burning appears.
- In more modern models, it may show an error on the display.
- Violations and malfunctions in the operation of the device.
How to choose an electric brush
Before replacing carbon electrobrushes, it is worth choosing them correctly. Experts recommend installing only original parts. In other words, when choosing an item, the model of the washing machine and the manufacturer should be considered. Of course, there are universal modifications that can be installed on any device. However, as practice shows, such brushes for a washing machine very quickly become unusable and cause malfunctions of the equipment.
If only one brush fails, both must be changed. Otherwise, the load on the rotor will be distributed unevenly. As a result, this can lead to engine failure. Before buying carbon electrobrushes, you should figure out which variety was installed in the washing machine. In this case, there may be several options:
- Collapsible parts, consisting of three fragments.
- One-piece brushes with a plastic case.
- Simple, which are a graphite rod equipped with a copper tip.
Unit replacement and disassembly
If you contacted a service center to identify the causes of malfunctions in the operation of the washing machine, then here you will replace the carbon brush. If this is not possible, then the unit can be repaired at home. To begin with, it is worth disassembling the washing machine. To do this, you must:
- Disconnect the washing machine from the power supply, disconnect the hoses for collecting and draining water.
- The next step is to unscrew the fasteners that securely hold the back cover of the device. After removing the hardware, the panel should be removed.
- The drive belt must be removed from the pulley.
- It is worth removing the rotor. To do this, unscrew the bolts that secure the part to the drum.
- You should carefully take a picture so that it shows how and where a certain element is attached.
- Now you can disconnect the contacts and remove the carbon brush from the sockets.
- Copper plates should be cleaned a little. To do this, you can use sandpaper. Work with such parts carefully.
- Strip the copper tips on the new brushes. You can collect copper dust with a vacuum cleaner.
- New parts must be installed in the slots.
How to assemble the unit
After replacing the carbon brush, you must assemble the device. This should be done in accordance with the photographs, which reflect the location of all the important elements of the system. First, install the engine of the unit. Now it’s worth checking the operation of the replaced parts. To do this, the unit must be connected to the power supply and the “Spin” function started. If for the first time the minutes of operation of the brush begin to wear out, then you should not be scared. If the new parts are serviceable, the washing machine should be disconnected from the mains, install the drive belt on the pulley and fix the back panel of the appliance with hardware.
Appeal to specialists
If you don’t have confidence in your own abilities, and replacing electric brushes seems a very difficult process for you, then you should turn to specialists for help. Professionals will quickly and easily fix all breakdowns and replace damaged parts.The choice and purchase of electric brushes should also be entrusted to specialists. They will be able to pick up items that will match the model of the washing machine.
As for the cost of such services, it depends on which region you live in. The average price is from . The cost of the parts themselves depends on the material from which they are made, as well as on the manufacturing company. If you have a washing machine of one of the popular brands, then the price of electric brushes will be 350 - .
In conclusion
Electric brushes are one of the most important elements of a washing machine. These parts ensure the normal operation of the unit for a long time. Most often, electric brushes fail due to improper operation of the equipment. Their malfunction entails the complete impossibility of using the washing machine. The elements themselves are reliable and wear resistant. As a rule, electrobrushes can last from 7 to 12 years.
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