Owners of modern smart devices often face the desire to expand the functionality of their devices, but it is important to clearly understand how to pour water into a Xiaomi vacuum cleaner, and whether this is possible in principle for your particular model. Many users mistakenly believe that all robot vacuum cleaners have a wet cleaning function, which leads to attempts to pour liquid into unprepared compartments, causing short circuit and electronics to fail. Before proceeding with any manipulation of the fluid, you need to make sure that your device supports floor washing mode and has the appropriate tank design.
Xiaomi and its sub-brands, such as Roborock, Vacuum and Mijia, are all making a wide range of devices where dry and wet cleaning systems can be drastically different. Some models put water directly into the main dust collector, others use a separate module, and still others automatically supply the liquid from the self-cleaning base. HEPA-A filter or engine bay without a special container will cause irreversible engine failure, so the first step is always to identify the type of your device and study the instructions specifically for your modification.
What you do next depends on whether your machine is a classic cleaning robot or a more advanced model with automatic water supply. Incorrect handling of tanks can lead not only to breakage, but also to the emergence of mold inside the system, if you do not follow hygiene standards. In this article, we will discuss all the nuances of the process so that you can safely operate your equipment.
Identification of model and type of cleaning
Before you can figure out how to put water in a Xiaomi vacuum cleaner, you need to determine if your model supports wet cleaning at all. There are dry cleaning devices in the brand's product line, where any contact with water inside the case is fatal. Usually these models are labeled "Dry Only" or simply do not come with a water tank in the basic supply. If you try to pour liquid into the dust compartment of such a device, water will instantly get to the filters and the motor.
Wet cleaning devices fall into several categories, based on the principle of water delivery: simple models use gravity or capillary feeding through a napkin, where water simply wets the fabric; more complex systems, such as VibraRise or disk mops, require precise pressure control so that you don't pour the carpet or laminate. Understanding the principle of operation will help avoid errors when filling the tank.
⚠️ Warning: Never pour water directly into the dust suction hole or engine compartment, and water should only be delivered to a specialised removable tank marked with the appropriate drop icon or the words "Water".
To accurately determine the capabilities of your gadget, it is recommended to use the Mi Home or Xiaomi Home application. The device card always indicates the supported modes. If the application interface does not have a water level or wash mode select button, then structurally your vacuum cleaner is not designed to contact the liquid.
Preparation of water and detergents
The quality of the liquid used directly affects the life of the pump and injectors inside the device. The manufacturer strongly recommends the use of ordinary tap water, pre-filtered or boiled, to minimize the formation of scale. Hard water contains calcium and magnesium salts, which over time become crillized and can clog the thin channels of the supply system, which will lead to the need for complex repairs.
Special attention should be paid to the use of detergents. Many users mistakenly add ordinary household floor chemicals to the tank, which is strictly prohibited. Aggressive surfactants can erode rubber seals, plastic parts of the pump and cause abundant foaming that disrupts the operation of water level sensors. For Xiaomi equipment, there are special concentrates that do not form foams and are safe for internal components.
- 💧 Use only soft, filtered room temperature water to prevent scale formation in the system.
- 🚫 It is strictly forbidden to use chlorine-containing products, bleach and ordinary gels for floor washing in the robot tank.
- 🧴 It is allowed to use specialized cleaning solutions from Xiaomi or their analogues marked "Low Foam" (low foaming).
- 🌡️ The water temperature should not exceed 40 degrees Celsius, so as not to deform the plastic elements of the tank.
If you do decide to use a specialized tool, strictly observe the dosage indicated on the vial. Usually the proportion is 1 cap per few liters of water, but for robotic systems, the concentration should be even lower, since the volume of the tank is small and rinsing is difficult. Excessive chemistry will lead to the fact that after cleaning the floor will remain sticky, and inside the tank will appear persistent unpleasant smell.
Instructions: pouring water into a combined tank
In models where the vacuum collector and water tank are combined into one body (so-called 2-in-1 tanks), the filling process requires special care. Usually such devices have a partition inside the container separating the dry and wet compartments. To properly pour water into a Xiaomi vacuum cleaner of this type, you first need to remove the combined module from the robot body by pulling the handle or pressing the lock.
On the top of the tank, you'll see two covers: one for a dust compartment (usually larger) and one for water (smaller, often with a rubber cap or valve). Open only the lid designed for the liquid. Pour the water slowly, controlling the level through a transparent window or MAX indicator. Exceeding the maximum level can lead to overflow and water entering the dry compartment when you install the tank back.
☑️ Checklist of filling of the combined tank
Once filled, you need to make sure that the rubber cap or valve is sealed. Often users forget to check the density of the lid, which leads to leaks immediately after you start working. It is also worth checking whether water accidentally hit the dust compartment - if this happens, the dry filter must be removed and dried immediately, otherwise it will swell and lose its properties.
What to do if the water gets into the dry compartment?
The important thing is to put the tank back into the robot. Make sure the contacts (if there are on the tank) are dry, and insert the module before the characteristic click. If the tank is curved, the system may not see the presence of water and start wet cleaning mode, giving an error in the application.
Filling a separate module for wet cleaning
More advanced or basic models use a separate removable water tank that is installed instead of the dust collector or with it in a special compartment. The design of such tanks is often simpler: it is a container with a water supply valve and a platform for attaching a wet wipe. You can pour water into such a module by removing the top cover or flipping the tank (depending on the design of the valve).
If your tank is equipped with an electronic valve (controlled pump), it may have a bay port that does not require the device to be flipped. In gravity-propelled models (drip type), it is often required to turn the tank upside down, open the valve, fill with water and close quickly so as not to splash the contents. Be careful when turning over a full tank - sudden movements can disrupt the internal float mechanism.
| Type of tank | Principle of submission | Volume (example) | Features |
|---|---|---|---|
| Mechanical | Gravitational/Drip | 150-200 ml | Flow control by slider, no electronics |
| Electronic (Basic) | Pomp (control from) | 200-250 ml | Accurate dosage, integration with the card |
| With vibration (VibraRise) | Pump + Vibration Platform | 250-300 ml | High pressure, mop removal from carpets |
| Disc (Osculating) | Double pump | 250-300 ml | Rotating cloths, high efficiency |
When you install a full tank in the robot, make sure that the floor wipe is fixed flat and does not hang, otherwise it may wind over the brush. Also check that the bottom of the tank (where the holes for the water outlet are located) is dry from the outside before installation, this will help to avoid false positives of leak sensors.
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Tip: Before using a new water tank for the first time, wash it with clean water without chemicals.This will remove the possible production dust and smell of new plastic, ensuring the purity of the first cleaning.
Automatic water supply from the base (Auto-Refill)
Flagship models of robot-moove, such as Xiaomi Robot Vacuum X10+ or Roborock S7 MaxV Ultra, are equipped with self-service stations that pour water into the robot tank. In this case, the user must pour water directly into the tanks located in the base.
The process of refueling the base is simple: remove the Clear Water tank, fill it to the MAX tag and install it back, and the robot will determine the level of the liquid itself and start refueling its internal tank every time it returns to the base for charging or after cleaning a certain area, eliminating the need to manually pour water into the Xiaomi vacuum cleaner before each cleaning.
⚠️ Note: Normal detergents should be added to the tanks of the self-cleaning base unless explicitly authorized by the specific model instructions. For such systems, there are special tablets or concentrates that are placed in a special compartment or dissolved in water in a strict proportion.
It's important to make sure that there's always a supply of fluid in the base's clean water tank, if you want the auto-doll function to work properly. If the water runs out during operation, the robot can interrupt the wet cleaning and continue only drying, or return to the base with an error. Empty the dirty water tank regularly so that the system can wash the mops properly.
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Using a gas station is the most convenient way to operate, but it requires regular monitoring of the water level in the station tanks and timely disposal of dirty water.
Typical errors and problems with filling
Despite the simplicity of the procedure, users often make mistakes that lead to malfunction devices. One of the most common problems is the use of hot water. Many people think that warm water better dissolves pollution, but the plastic of Xiaomi tanks can deform at temperatures above 40-50 degrees, which will lead to leakage and leakage on the control board.
Another common mistake is ignoring the level indicator. A flood of water "in the eye" or above the MAX mark creates excessive pressure inside the closed tank. When installed in a robot, this pressure can squeeze water through the valve immediately, causing the contacts to short circuit. Always leave a small air gap as intended by the design.
- 🚿 Do not use tap water without filtration in regions with very hard water – this will quickly disable the pump.
- 🔥 Never pour hot water (over 40)°C) to avoid deformation of the plastic shell of the tank.
- 📉 Don't ignore the mark MAX — Overflow threatens to get water into the electronics of the robot.
- 🧼 Do not add regular soap or shampoo – copious foam can block sensors and spoil the pump.
If the robot makes strange noises after pouring water, doesn't pump water or makes an error, check if the tank is installed correctly. Sometimes users forget to remove the protective film from the valves of the new tank or don't fully insert the module into the case. It is also worth checking whether the filter at the outlet of the tank is clogged - it can be rinsed carefully under the tap.