How does wet cleaning work on Xiaomi robot vacuum cleaner

Xiaomi’s robotic assistants are no longer just floor dust collectors. Today, flagship models can effectively wash hard coatings using advanced water supply systems. Understanding the mechanism allows owners to achieve perfect cleanliness without stains and puddles.

At the heart of the process is a combination of a gravity or pump method of fluid delivery, which is regulated by the device's electronics. The user no longer needs to control every step of the machine, since smart algorithms themselves determine the optimal mode depending on the type of pollution and the intensity setting chosen.

In this article, we will discuss in detail what happens inside the case during washing, how to properly prepare the device for operation and what nuances of operation are often overlooked by beginners. Proper use of all functions will turn routine cleaning into a fully automated process.

The principle of operation of the moisture system

A key element of the wet cleaning system is an electronic water tank, which is installed instead of a standard dust container, and inside the tank is an electron pump or gravity-type valve that meters water onto a top-mounted microfibre wipe. In simpler models, a membrane valve is used, where water flows by gravity when the robot starts moving.

The wetting process is controlled by a microprocessor that synchronizes the fluid supply with the engine, which prevents puddles from forming on the floor, since water is supplied in microdoses just as the brush is rotating or the platform is moving. Smart electronics also take into account the battery level to prevent discharge in the middle of the wash cycle.

⚠️ Warning: Never use hot water or water with aggressive chemical detergents added, which can damage the filter membrane and cause the pump to fail or scale in thin feed channels.

Importantly, cleaning quality is directly dependent on the density of the napkin to the floor, and this is done by a special plate that evenly presses the wet fabric to the surface, and some advanced models are equipped with a vibration cleaning function, which greatly improves the efficiency of removing dried spots.

Types of tanks and water supply management

In the Xiaomi and Roborock ecosystem (which is closely related to Xiaomi), there are several generations of water tanks. The basic versions are equipped with a mechanical regulator, where the user manually selects the number of drops per minute.

Electronic tanks are often called "Smart Tank" and allow you to set three levels of water supply: low, medium and high. Low is ideal for keeping the laminate clean every day, while high is necessary for tiles or linoleum with visible contamination. The pump algorithm ensures uniform humidification even when the water level in the tank decreases.

Special attention should be paid to the combined 2-in-1 containers, where the dust and water compartment are separated by a partition, which allows the vacuum cleaner to simultaneously suck up garbage and wipe the floor. However, the effectiveness of dry cleaning in such models can be reduced due to the smaller volume of the garbage collector and the features of the aerodynamics.

• 💧 Mechanical tank: wheel adjustment, no connection to the application, suitable for simple models.
• 📱 Electronic tank: accurate configuration through Mi Home, constant pressure, work with virtual walls.
• 🔄 Combined container: saves time on module replacement, but less volume for water and dust.

When choosing a mode, you should consider the flooring material. For sensitive parquet, it is better to use a minimum feed so that the tree does not swell. For a kitchen with tiles, you can safely turn on maximum power, since the ceramics are resistant to moisture and require more intensive exposure to remove fat.

Setting up scripts in the Mi Home app

To fully control the cleaning process, you need to use the official Mi Home app, which unlocks the full potential of a smart device, and in the interface, you can not only start the robot, but also customize the wet cleaning parameters for each room separately.

You should find a section on the device menu that deals with cleaning options, where you see a slider or a choice of three fixed humidity intensity values, and modern firmware allows you to create maps with different settings for different areas, for example, in the hallway you can set high intensity, and in the bedroom you can set low or turn off the sink altogether.

Way to menu: Mi Home → Device → Settings (three dots) → Cleaning settings → Water Intensity

One of the most useful features is that you can actually put virtual walls or forbidden areas, and you can draw a carpet or an electronic area on a map, and the robot will automatically turn off the water supply and stop suction as you approach that area, which is critical to protecting carpets from getting wet.

The app also has a schedule function, so you can set the robot up to do the daily wet cleaning in your absence, it can remind you if you're running out of water or if it's time to replace the filter element, and the analytics in the app will show you how much area you can treat in one cycle.

Preparation for work and selection of consumables

The quality of the final result depends on 50% of the preparation. The first step should always be dry cleaning. The robot must collect all the large dust, wool and debris before starting to wash. If you run a wet cleaning on a dirty floor, the dust will mix with the water and turn into hard-to-remove dirt, smearing around the perimeter.

Special attention should be paid to microfiber wipes, which should be clean and tightly attached to the platform, disposable wipes are possible, but reusable fabrics are better at retaining moisture and more effectively erasing contamination, and after each use, the fabric must be removed, washed and dried to avoid unpleasant odors and bacterial reproduction.

The water to refuel must be filtered or distilled. Using tap water over time leads to lime plaque formation inside thin tubes and on heating elements (if any). Distilled water significantly prolongs the life of the pump and prevents nozzles from clogging.

Maintenance and care

Regular maintenance is the key to a long life for your robot vacuum cleaner, and once the wet cleaning cycle is complete, you need to remove the tank, drain the remaining water and rinse it with clean water, and stagnant water is the perfect environment for mold and algae to develop, which can lead to clogging and odor.

Once a week, a deep cleaning is recommended. Take off the napkin and rinse the mounting platform. Check the condition of the filters in the tank (if they are removable) and replace them if necessary. Also pay attention to the charging contacts and sensors on the bottom of the robot - they should be dry and clean.

⚠️ Warning: Before installing the water tank, always wipe the bottom of the robot with a dry cloth. Moisture in the contact group of charging pins can cause corrosion or short circuiting.

Remember to change the main brush and side broomsticks according to the manufacturer's schedule. A dull brush collects less trash before washing, which reduces the overall quality of cleaning. For models with a turbobrush, it is important to regularly remove wound hair so as not to overload the engine.

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To make the wipe better at cleaning the dirt, wet it a little before you put it on the platform and squeeze it out, and dry microfibre in the first minutes of operation can simply smear the dust, rather than collect it.

Typical errors and their solution

Users often experience a robot leaving wet footprints or the floor remaining dry, with the former often being to blame for too much water or using an inappropriate (too thin) wipe, and the latter being clogged with a filter or air plug in the feed system.

If the robot makes strange noises or stops with an error, check if the tank is properly installed. The water level sensors may not work if the module is inserted with a skew, and it is also worth checking whether the air supply valve, which is necessary for normal fluid flow, is blocked.

Sometimes users forget to remove the napkin when switching to dry carpet cleaning mode, which causes the pile to get wet. Always check the status of the module in the app before launching. Make sure that the room settings do not prohibit entry if you plan a comprehensive cleaning.

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Timely replacement of consumables and the use of distilled water are the main conditions for the robot to wash the floor, not spoil it.

Frequently Asked Questions (FAQ)