How to properly fill up the dispenser for Xiaomi soap

Xiaomi’s automatic dispensers have long become the standard of hygiene in many homes and offices, eliminating the need for users to touch dirty buttons or levers. However, like any smart device, they require proper maintenance, especially when the contents of the tank run out. Many owners face difficulties in first refueling, not knowing how to safely open the sealed valve or what consistency of fluid to choose for stable operation of the mechanism.

Incorrect operation or use of inappropriate tools can lead to a clogged pump, air traffic jams or even electronics breakdown. In this guide, we will detail the process of replacing consumables for the popular Xiaomi Mijia Auto Foaming Hand Washer and Xiaoji Smart Hand Washer models, paying special attention to technical nuances that are often overlooked in standard manuals.

You'll learn why thick soap can be a problem, how to properly pump the system, and what life hacks exist to save battery life. Following these instructions will prolong your gadget's life and ensure perfect foaming every time you put your hands up to the touch sensor.

Preparation for refueling and selection of consumables

Before you start replacing the contents, you need to decide on the type of liquid you plan to use. Xiaomi’s original replacement units already contain a special concentrate that, when mixed with water in the proportion specified by the manufacturer, gives the perfect foam. If you decide to use a third-party remedy, make sure that it does not contain solids, abrasives or too thick oils that can clog thin pump channels.

Optimal viscosity is critical to the peristaltic pump installed inside the enclosure, and a too thick gel will not have time to mix with air and water, giving out a liquid trickle instead of an air cap. It is best to choose special liquid soaps marked "for automatic dispensers" or dilute ordinary gels with distilled water to the state of light milk.

⚠️ Attention: It is strictly forbidden to pour pure alcohol, acetone or aggressive alkalis into the tank in high concentration, since they can destroy rubber seals and the plastic pump housing, which will lead to leakage and failure of the device.

It is also worth preparing pure water, preferably filtered or distilled, so that the heating element (if you have one in your model) and inside the tubes does not form scale. The presence of sediment will reduce the effectiveness of foaming over time and may require a complex washing procedure for the entire system using citric acid.

Instructions for disassembling and filling the tank

The refueling process varies depending on the specific model of your device, but the general principle remains the same for the entire ecosystem of the smart home. Unlike mechanical dispensers, it is important not to damage the electronic control unit located at the top, so all manipulations are carried out carefully and without the use of excessive force.

For the Mijia series of transparent tank models, the algorithm is to first disconnect the top lid with the motor from the bottle, this is done by turning counterclockwise, then opening access to the interior space, and in some versions, you first need to remove the decorative ring to access the screws or latches.

• 🧴 Remove the upper mechanical part of the device, unscrewing it from the main body-reservoir.
• 💧 Wash the container with warm water if there are residues of old soap in it to avoid mixing different soaps.
• 🚿 Pour a new soap solution, following the manufacturer's recommended proportions of water and concentrate.
• 🔒 Tightly twist the lid back to a characteristic click or stop, checking the tightness of the connection.

It is important not to transfuse the liquid above the maximum MAX mark, as when the lid is twisted, the level will rise and the excess can get into the electronics compartment, causing a short circuit. If you use the concentrate, first pour the water and then add soap so that the mixture mixes naturally when the pump is installed.

Features of refueling model Xiaoji and other modifications

Xiaoji-branded devices (often labeled as xyj) have a slightly different design, where the filling unit can be integrated directly into the lid or be a separate replaceable cartridge. In such models, the process of replacing consumables is as simple as possible and often does not require contact with the soap solution itself, which is more hygienic.

If your model is equipped with a fast-change system, you don't have to unscrew or disconnect the wires. Just remove the old unit and insert a new one before you click. However, if you want to use your soap, you have to gently open the plastic cartridge case, which may require the use of a thin flat tool.

When using third-party fluids in Xiaoji models, it is important to ensure that the consistency is uniform. If you notice the mixture stratification, be sure to shake the tank before installing, otherwise the pump will start pumping either clean water or a thick gel, which will disrupt the foaming process.

System pumping and removal of air traffic jams

After filling the pump with a new liquid, there is air in the pump tubes that must be expelled before the device starts working correctly, and if you ignore this step, the dispenser will buzz, but only spit out rare spitting or do not respond to hand-dragging at all.

To pump the system, hold your hand to the sensor and press the activation button (if any) or simply hold your hand in the sensitivity zone for 5-10 seconds. Repeat the procedure 3-5 times. You will hear the characteristic sound of the motor, and air will first go through the nose, and then a mixture of air and liquid.

In some cases, especially when using thick solutions, you need to pump longer. Don't worry about the engine overheating - modern Xiaomi controllers have protection against overload. However, if the device has been running for several years, prolonged dry operation can wear out the engine brushes.

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To speed up the pumping process, you can temporarily remove the sputter (if the design allows) to reduce the resistance to air output, and then install it back to form foam.

Configuring the dispenser and operating modes

Modern Xiaomi and Smartmi dispensers often come with additional customization features that allow you to adapt the device to your needs, such as adjusting the volume of foam issued, changing the sensitivity of the sensor or switching modes of operation.

Customization is usually done via combinations of the control button presses or through the Mijia/Yeelight mobile app. For example, triple-pressing a button can switch from foam to liquid, which is convenient for using different types of detergents or disinfectants.

• 👶 Children's mode: reduces the amount of portions issued and reduces the speed of delivery for safety.

If you connect the device to a smartphone, you can also track battery levels and soap balance (in smart models with a level sensor), which allows you to order replacements on time or prepare a new solution without leaving your hands dirty at the wrong time.

⚠️ Warning: When switching modes, be sure to conduct a test test to make sure that there is no mixture of the previous consistency left in the tubes, which can spoil the quality of the foam.

Typical problems and their solution

Even when properly operated, users may face a number of common problems, such as weak foam, spontaneous triggering or sensor failure, most often due to discharged batteries, oxidation of contacts or clogging of the outlet with dried soap.

If the dispenser has started to give out a liquid trickle instead of a thick cap, check if the concentrate is out and the cover is tight enough. The air suction through the loose connection breaks the vacuum necessary for the pump to work, and the foam ceases to form.

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90% of problems with foaming are solved by replacing batteries with high-quality alkaline and thoroughly washing the sputter spout with warm water.

In case the sensor is no longer responsive to your hands, wipe the infrared window with a soft cloth. The accumulation of dust or soapy plaque can block the signal. Also try to remove and insert the batteries back to restart the device controller.