How to connect the engine from the washing machine to the 220V network

Washing machines, like any other type of equipment, eventually become obsolete and fail. Of course we can go anywhere clean up an old washing machineor dismantled for parts. If you went the last way, then you could have left the engine from the washing machine, which can serve you well.

The motor from an old washing machine can be adapted in the garage and built from it to an electric emery. To do this, you need to attach an emery stone to the motor shaft, which will rotate. And you can sharpen various objects about it, starting with knives, ending with axes and shovels. Agree, the thing is quite necessary in the economy. Also, other devices that require rotation can be built from the engine, for example, an industrial mixer or something else.

Wiring diagram of the electric motor of a modern washing machine

If you have figured out what to do with the old motor, then the first question that may bother you is how to connect the electric motor from the washing machine to the 220 V network. And just to this question we will help you find the answer in this manual.

Before proceeding directly to connecting the motor, you must first familiarize yourself with the electrical diagram, which will make everything clear.

Connecting the motor from the washing machine to the 220 volt network should not take you much time.To get started, look at the wires that come from the engine, at first it may seem that there are a lot of them, but in fact, if you look at the above diagram, we don’t need all of them. Specifically, we are only interested in the wires of the rotor and stator.

Dealing with wires

If you look at the block with wires from the front, then usually the first two left wires are wires tachometer, through them the engine speed of the washing machine is regulated. We don't need them. In the image they are white and crossed out with an orange cross.

Next comes the stator wires red and brown. We marked them with red arrows to make it clearer. Following them are two wires to the rotor brushes - gray and green, which are marked with blue arrows. We will need all the wires indicated by the arrows for connection.

In different models of washing machines, the wires will differ in colors, but the connection principle remains the same. You just need to find the necessary wires by ringing them with a multimeter.

To do this, switch the multimeter to measure resistance. Touch the first wire with one probe, and look for its pair with the second.

A working tachogenerator in a quiet state usually has a resistance of 70 ohms. You will find these wires immediately and put them aside.

Just ring the rest of the wires and find pairs for them.

We connect the engine from the washing machine

After we found the wires we needed, it remains to connect them. To do this, we do the following.

According to the diagram, one end of the stator winding must be connected to the rotor brush. To do this, it is most convenient to make a jumper and insulate it.

The jumper is highlighted in green in the image.

After that, we have two wires left: one end of the rotor winding and a wire going to the brush. They are what we need.These two ends are connected to a 220 V network.

If you want to change the rotation of the motor in the other direction, then you just need to throw a jumper to other contacts, swap the wires of the rotor brushes. See the diagram for what it looks like.

If you did everything right, the motor will start to rotate. If this did not happen, then check the engine for operation and then draw your own conclusions.
Connecting the motor of a modern washing machine is quite simple, which cannot be said about old machines. Here the scheme is slightly different.

Connecting the motor of an old washing machine

Connecting the motor of an old washer is a little more complicated and will require you to find the right windings yourself with a multimeter. To find the wires, ring the motor windings and find a pair.

To do this, switch the multimeter to measure resistance, touch the first wire with one end, and find its pair with the second in turn. Write down or remember the resistance of the winding - we will need it.

Then, similarly, find the second pair of wires and fix the resistance. We got two windings with different resistance. Now you need to determine which one is working and which is launcher. Everything is simple here, the resistance of the working winding should be less than that of the starting one.

To start an engine of this kind, you will need a button or a start relay. A button is needed with a non-fixable contact and, for example, a button from a doorbell will do.

Now we connect the engine and the button according to the scheme: But the excitation winding (OV) is directly supplied with 220 V. The same voltage must be applied to the starting winding (PO), only to start the engine for a short time, and turn it off - this is what the button is for ( SB).

We connect the OB directly to the 220V network, and connect the software to the 220V network through the SB button.

• ON - starting winding. It is intended only for starting the engine and is activated at the very beginning, until the engine starts to rotate.
• OV - excitation winding. This is a working winding that is constantly in operation, and it rotates the engine all the time.
• SB - a button with which voltage is applied to the starting winding and, after starting the motor, turns it off.

After you have made all the connections, it is enough to start the engine from the washing machine. To do this, press the SB button and, as soon as the engine starts to rotate, release it.

In order to reverse (motor rotation in the opposite direction), you need to swap the contacts of the software winding. This will cause the motor to rotate in the opposite direction.

Everything, now the motor from the old washer can serve you as a new device.