In any model of a washing machine, the most important element is the inlet valve for the washing machine, sometimes referred to as the inlet valve. In this article, we will tell you how this structural element is arranged, describe the principle of operation, and what types exist.
Design and principle of operation
Washing machine inlet valve, has two types of working state — open and closed. In the second state, it arrives most of the time. A coil is installed inside the valve, to which the program supplies an electric current, which is a signal to open the valve, which accordingly leads to filling the working space of the machine with water. This principle of operation gave rise to another name for the valve — electromagnetic.
When the tank is filled to the required level, the control program sends a second signal to the filling valve, after which it closes and the liquid stops flowing into the system.
In almost all models of washing machines, the valve is located at the top of the structure, near the back wall. But in those machines where the laundry is loaded vertically, the valve is located at the bottom of the unit, also near the back wall. In the first case, in order to get to the element we need, it is necessary to remove the back cover, and in the second case, the side panel is dismantled.See also - Do-it-yourself replacement of shock absorbers in a washing machine
Types of inlet valves for a washing machineThese locking mechanisms are of various types. The operating mode of the valve based on an electromagnet has been described above, however, in reality, the operation process is a little more complicated. Water must be supplied to the washing machine through several hoses at a programmed time interval. The simplest valves have one such electromagnet, and the filled water was distributed over the machine using the mechanism of the command apparatus. However, these units can no longer be found on sale, as they are obsolete in terms of technology.
Today filling valve for washing machine has a more complex design, where the internal device is divided into many sections, and each of them has its own electromagnet. Accordingly, each section is connected to a specific place where water is required, and as needed, the control program gives signals and activates the coils. Therefore, we can safely distinguish the following types:
- valves with one coil;
- with two coils;
- with three coils.
Also, now all coils have a completely electrical structure, they completely lack mechanical components.
How to check the valve for performance
To determine the health of the valve, it must be removed. After, connect the water supply hose to it, and supply current to the coils. If the unit is in good condition, the valve will open and allow water to pass through. After the voltage supply to the coil is interrupted, the locking mechanism should close. This check is very easy and will not cause any special difficulties, but it must be carried out carefully, since you are working in high humidity conditions with an electrical appliance, in no case should you allow bare wires to come into contact with liquid.
Also, it is necessary to check the following units of the unit:
- It is necessary to check the filter mesh on the valve and clean it of dirt.
- If the valve does not open, you should check if the solenoid coil has burned out in it, use a multimeter to do this. The resistance of the working coil varies from 2 to 4 ohms.
- Check the presence of plastic elements in the valve fittings, they are designed to contain the pressure of water. If there are no data inserts, then this structural element must be replaced.
The inlet valve of the washing machine is a non-separable part, so it cannot be repaired. This replacement operation is carried out as follows:
- First, you need to turn off the power to the washing machine, then turn off the water supply and remove the back cover.
- We disconnect all hoses from the valve, the main thing is to remember which one was installed where.
- Then unscrew all the fasteners holding our part.
- Remove the old valve.
- Next, install a new element, and assemble the washing machine in reverse order.
After completing all the necessary points, check the performance of your unit, whether water is flowing and whether everything is functioning correctly.