The principle of operation of aquastop in a dishwasher

Today, all washing machines and dishwashers have the Aquastop system. Protection against emergency leaks can be partial or complete - it depends on the equipment model. What is this feature and how does it work? Let's look into the nuances.

The purpose of existence and the principle of operation of the system?

Not all consultants understand how aquastop works. When describing a dishwasher, store managers will definitely mention this function, but only a few will be able to explain the principle of its operation. So why is such a system necessary in a dishwasher?

The pipes through which water is supplied to high-rise buildings have very high pressure. Cases of water hammer are also common. Therefore, a leak may unexpectedly occur, and then the liquid will begin to leak out of the equipment. The Aquastop system was invented to protect the dishwasher from leaks. Special sensors immediately react to a gust and block the operation of the device.

The main task of the aquastop is to detect a leak in time, stop the flow of water into the dishwasher and drain the liquid from the system.

The operating principle of the aquastop is simple. Events develop as follows:

• water flows out of the appliance and collects in the tray provided under the dishwasher;
• the float rises when the water level reaches 200 ml;
• the electric sensor transmits a signal to the control board;
• the “brain” stops the dishwasher and starts the drain pump;
• water is pumped out of the system.

If a leak occurs at the stage of water intake, then the main “concerns” fall on the shoulders of the inlet hose. If violations are detected, a special valve shuts off the water flow.As a result of such measures, liquid ceases to be drawn into the system.

The Aquastop system, according to statistics, helps to avoid damage from leaks in 992 cases out of 1000. The likelihood that the option will not work is negligible. However, protection cannot be 100% guaranteed, so users need to try to prevent possible troubles on their own.

What should dishwasher owners do to protect their household appliances from leaks?

• Clean your dishwasher dust filter at least once a month.
• Wash and dry the detergent dispenser daily to prevent the dispenser from becoming clogged.
• Periodically check the rubber seals for defects and damage.
• Buy high-quality detergents created specifically for PMM.

The Aquastop system can provide full or partial protection of the PMM from emergency leaks.

What dishwasher parts perform protective functions? What is the difference between full and partial aquastop? Let's look at these points in more detail.

What are the types of protective systems?

Today, most dishwashers have the AquaStop function. Models in the low price segment are equipped with a lower pan with a float, while more expensive equipment is equipped with an additional inlet hose with a special sensor. In the first case, we can talk about partial protection against leaks, in the second – about complete protection.

Partial protection is the most primitive method. With this solution, a special tray with a float is placed at the bottom of the dishwasher. An electric sensor is built into the foam. If water begins to collect under the device, the ball rises. When it floats to a certain height, the Aquastop system is activated.

The sensor instantly transmits information to the control module.It blocks the dishwasher from working and the cleaning cycle stops. Next, the drainage pump comes into play - it begins to pump water out of the device.

Thus, the machine automatically performs all actions to prevent flooding. After all the water has left the dishwasher, the user will need to empty the tray and begin troubleshooting. If you cannot find out on your own why the leak occurred, you will have to contact a service center for help.

The ideal option is if the machine is completely protected from leaks. This Aquastop system is found on more expensive models in the middle and high price segments. In these dishwashers, in addition to the tray, there is an inlet hose with a special solenoid valve.

The electromagnet opens when water is poured inside. When the dishwasher is filled to the required level, the module closes the inlet membrane. This helps avoid overfilling. With full protection, the aquastop elements control both internal and external leaks.

In such machines, in addition to the hose, there is the already familiar tray with a float. He is the second level of aquastop. Experts recommend purchasing PMM with complete protection against leaks.

If a leak is detected and the aquastop works, the user will also have to empty the water from the pan and find out what caused the accident. Having understood the cause, it is necessary to eliminate it. Only then will it be possible to continue using the dishwasher.

Inlet hose protection mechanisms

The principle of operation of the aquastop has been disassembled. And if everything is more or less clear with the pan, then how the inlet hose protects against leaks is not always clear. Therefore, we will tell you what corrugations are and how they prevent leakage.

Today you can find inlet hoses with one of three types of protective systems:

• mechanical;
• using an absorbent substance;
• electromagnetic

Corrugations with a mechanical system are installed on budget dishwashers. A valve and a spring are used as protective elements. This design is configured to work under a certain pressure. If a leak occurs, the pascals fall, the spring expands, and the valve blocks the water flow.

The main advantage is the low cost of such hoses. The main disadvantage is the system’s inability to detect small leaks, which can also cause harm. According to statistics, mechanical protection detects up to 85% of accidents, and this is below standard values.

An absorbent-based protective system is used quite often in dishwashers. If a leak appears, water is poured into the reservoir with the powder. When wet, the granules swell, lift the valve and block the water flow.

The disadvantage of inlet hoses with an absorbent substance is that they are disposable; after the first leak, the element will become unusable.

The absorbent increases in size and hardens, tightly holding the valve, so it will not be possible to reuse such a hose. The advantages of this protection system are that the substance reacts even to minor leaks. When wet, the powder becomes colored - the user can see the indicator color change on the hose itself.

Filling corrugations with an electromagnet are the most modern solution. In this case, a special valve is provided at the end of the hose. The device is connected to a tap on a water pipe.

As in the case of the absorbent, there is a double hose.If the inner casing through which water enters the dishwasher bursts, the liquid will not spill onto the floor, but will remain inside. The solenoid valve will operate and the chamber will stop filling. Then the drain pump will start.

When buying a machine with full protection against leaks, be sure to measure the distance from the place where you plan to install the dishwasher, then the connection point to the water supply. The main problem with inlet hoses with Aquastop is the inability to lengthen them to the required size.

Today in stores you can find dishwashers equipped with:

• only with an inlet hose with aquastop;
• only a container with a float and an electric sensor;
• and a special hose and a tray.

When choosing a dishwasher, you should pay attention to whether the machine has a full or partial aquastop. This point is very important. It is better to buy equipment with absolute protection against leaks.

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