Among LG washing machines that need repair and arrive at service centers, a significant share is made up of equipment with three-phase brushless motors, or motors with inverter technology. Although such devices break down less often than brushed commutator motors, sometimes they also fail. How does this type of motor work and is it possible to repair the motor of an LG washing machine yourself, at home?
How does the inverter “engine” work?
A design feature of washing machines produced under the LG brand lies in the method of mounting the motor. It is connected directly to the drum, without a pulley or belt. The engine is secured with a special coupling. With the help of this part, the container with laundry is set in motion. Thanks to this design and the absence of additional elements, the manufacturing company’s engineers managed to reduce the dimensions. Compared to other washing machines, LG appliances are compact in size.
It is usually equipped with three-phase brushless motors. Their design includes a rotor and a stator with 36 inductors. The rotor is attached to the drum of the washing machine in such a way that its shaft simultaneously serves as the drum shaft. The electric motor is controlled by signals received from the electronic module.
How to remove the engine and is it worth repairing?
Companies that produce washing machines with inverter motors do not recommend repairing them yourself. Manufacturers advise turning to professionals and conducting system diagnostics.This procedure will allow you to determine the cause of the problem and eliminate it.
Important! Before starting diagnostic work, you need to check that there is no laundry left in the drum and remove the hatch.
To remove the inverter, proceed as follows:
disconnect the washing machine from the power supply;
remove the back panel from the device body by unscrewing the bolts holding it; find the screws that are located under the rotor. They are used to secure wiring. The screws must be unscrewed;
Before disconnecting the wires, you should fix their correct location. You can draw a diagram or take a photograph;
Unscrew the central rotor holding bolt. When performing this work, you must act carefully and hold the elements so that they do not rotate;
remove the rotor first and then the stator;
Disconnect all wire connectors one by one.
After the engine is removed, you can check its performance. Experts recommend assessing whether there is damage to the rotor winding. If necessary, it can be done again. It is difficult to do this with your own hands. You will need the services of a specialist. It is worth considering that this is an expensive service, so many washing machine owners prefer to completely change the electric motor.
Among LG washing machines that need repair and arrive at service centers, a significant share is made up of equipment with three-phase brushless motors, or motors with inverter technology. Although such devices break down less often than brushed commutator motors, sometimes they also fail. How does this type of motor work and is it possible to repair the motor of an LG washing machine yourself, at home?
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