Automatic dispensers from Xiaomi and sub-brands like Mijia or Soocas have become an integral part of the modern bathroom or kitchen, not only aesthetically pleasing, but also hygienic in the hand washing process, eliminating contact with the surface of the vial. However, like any device, they require timely maintenance, such as replacement or refilling of consumables.
For the first time, many users are faced with the question of how to open the container correctly and how to fill it so as not to damage the sensitive pump. Wrong actions can lead to clogging of the feed tube or failure of the sensor. In this article, we will discuss in detail the process of replacing the cartridge, choosing the right liquid and the nuances of maintaining a smart dispenser.
First of all, it is worth noting that most models are versatile but have their own characteristics depending on the series. Some versions involve using only original replacement units, while others allow you to use any suitable viscosity liquid.
Workplace preparation and choice of consumables
Before the procedure, you need to prepare the clean surface and the materials themselves. The optimal place is a sink or a table covered with a towel, because the spilled liquid can be slippery. It is important to decide in advance what you will fill the container, because this depends on the durability of the device.
The key factor is the viscosity of the fluid: too thick soap will create excessive pressure on the pump, which can lead to overheating or engine failure. On the other hand, excessively liquid compounds (like water) may not have time to form foam or, conversely, will result in a flow of gravity if the valve mechanism is not designed for such consistency.
Foaming soap devices require a special liquid with a low surfactant content, usually in a ratio of 1:5 or 1:10 with water. If your dispenser delivers ordinary liquid, the concentration should be standard. The use of aggressive chemicals containing chlorine or abrasive particles is strictly prohibited, as this will destroy the sealing rings and plastic parts.
- 🧴 Specialized refill kit from the manufacturer for guaranteed compatibility.
- 💧 Medium viscosity liquid soap with neutral pH balance to extend the life of the pump.
- 🚿 Distilled water for diluting concentrate (do not use hard tap water).
- 🧻 Paper wipes or soft rags to remove drops from the body.
⚠️ Warning: Never use soap with large scrubbing particles (bone, salt crystals) that are guaranteed to get stuck in a narrow feed channel and block the solenoid from working.
Make sure you have everything you need before disassembling the device, which will allow you to perform the procedure quickly and without unnecessary stress, and the right preparation is already half the success in servicing any smart equipment.
Dismantling the cartridge and opening the tank
The process of extracting the soap containers from most Xiaomi Mijia and Soocas models follows a similar algorithm. The device usually consists of an upper part with electronics and a lower tank-reservoir. In some models, the tank is a replaceable disposable unit, in others - a reusable bottle with a screw neck.
First, turn the dispenser upside down. The bottom part is often attached to magnets or latches. If you have a magnetically attached model, just pull the bottom unit down with a moderate force. You'll hear the characteristic click of the disconnection of the contacts. In threaded models, you need to turn the bottom part counterclockwise.
Once the tank is separated, you'll see the cartridge or the vial itself, and if you're using the original interchangeable block system, the old container is simply removed from the seat, and if you have a reusable version, you need to unscrew the top pump lid from the vial itself, and you need to do this carefully so that you don't damage the intake tube.
Nuances of magnetic contacts
The plastics that make these devices, while good quality, can become brittle at low temperatures or old age, and sudden jerks can break the plastic ears of the attachments.
Process of filling and replacing contents
If you use an original interchangeable cartridge, the process is as simple as possible: insert a new unit into the seat before the characteristic click and make sure that the puncture needle (if any) has entered the membrane. If you fill the reusable bottle, the actions will be as follows.
Wash the inside of the vial thoroughly with warm water to remove residues of old soap that may have thickened or stratified. pour new liquid, leaving approximately 10-15% of the volume empty. This airspace is necessary to create the correct pressure and work the foaming agent.
☑️ Refueling checklist
When twisting the pump lid, make sure that the intake tube does not bend and rest against the wall of the bottle at a sharp angle. The tube must freely reach the bottom, but not bend, otherwise the pump will not be able to capture the liquid.
Once assembled, turn the device into a working position. In some models, it may take several touch button presses (or 3-4 activations) for the system to pump fluid through the tubes and fill the mixing chamber. The first portion may be less foamy or contain air bubbles - this is normal.
| Type of liquid | Recommended viscosity | Mixing proportion | Risk to the pump |
|---|---|---|---|
| The original refill | Optimal. | Ready to use | Minimum |
| Ordinary liquid soap. | Medium/High | 1:1 with water (for foam) | Medium (blockage) |
| shower gel | Tall. | 1:3 with water | High (overload) |
| Alcohol antiseptic | Low (like water) | Don't mix. | High (corrosion) |
Notice the table above. Using shower gels or shampoos without proper dilution often causes the motor to hum, but no fluid to flow. Viscosity is a critical parameter for the longevity of your device.
Dosage adjustment and sensor operation
Modern Xiaomi Dispensers are often equipped with volume adjustment, either through a physical switch inside the battery compartment or through the software menu in the Mijia app. Properly configured, saving consumables and avoiding overdose.
To access the settings in the app, you need to connect the device to Bluetooth. In the interface, you can choose from three modes: small, medium or large portions. A small portion is ideal for children or for frequent hand washing, a large one for washing dishes or severely contaminated hands.
- 🔘 Minimum mode: produces about 0.25 ml of foam, saves up to 40% of fluid.
- 🔘 Standard mode: optimal for daily hygiene, about 0.4-0.5 millimeter.
- 🔘 Mode "Maximum": a powerful jet for complex tasks, about 0.7-0.8 millimeter.
You also need to pay attention to the sensitivity of the infrared sensor, so if the dispenser is spontaneously activated or does not respond to the hand, the sensor window may have become contaminated, wipe the front panel with soft cloth, and in some cases, calibration through the app helps.
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If the dispenser is in a very bright place (in direct sunlight or a powerful lamp), the infrared sensor can go blind. Try to shift the device slightly into the shadow or change the angle of inclination.
Do not forget that the response distance is usually from 1 to 5 cm. To bring your hand close to the nose is not required and even harmful, since you can stain the sensor with soap, which will lead to its sticking.
Device care and prevention of blockages
Regular maintenance greatly prolongs the life of the automatic dispenser, and the main problem with these devices is that the soap dries in the dispenser nozzle, and after each use, a droplet forms at the output, which eventually turns into a solid clot that blocks the foam output.
Once a week, it is recommended to wipe the nose of the dispenser with a wet wipe. If you notice that the jet has become curved or weak, remove the top cover (the pump unit) and rinse the intake tube and filter mesh under a stream of warm water. This will remove the accumulated deposits.
⚠️ Warning: Do not attempt to clean the outlet with sharp objects (needles, toothpicks) You may damage the calibrated hole or damage the inner mesh, which will change the spraying characteristics.
If you plan to not use the device for a long time (for example, going on vacation), it is better to remove the batteries and completely rinse the system with water so that the residue of soap does not acidify inside.
Pay special attention to contacts. The bathroom is humid and oxidation of the battery compartment is a common cause of failure. Periodically check contacts for white plaque and, if necessary, clean them with a stripe or alcohol.
Possible malfunctions and methods of their elimination
Even when used properly, there may be failures, and most users are faced with a situation where the indicator is on, the engine is buzzing, but the soap is not going. This indicates suffocation of the system or too thick liquid. Try to activate the dispenser idly several times by putting the tube into a container of warm water for pumping.
If the device blinks a red light, it's a low-power signal. Xiaomi models typically use AA batteries (4 or 5 pieces). It's important to change the entire set at the same time and not mix batteries of different types or manufacturers. Using 1.2V batteries (Ni-MH) instead of 1.5V alkaline batteries can lead to false charge readings.
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The main reason for the pump failure is not the discharged batteries, but the jamming of the mechanism with dried soap. Before buying a new device, always try to wash the system with warm water.
In case the dispenser stopped responding to the sensor, check if the mode of transportation is on (if you have one in your model), sometimes a complete reset helps: remove the batteries, press and hold the switch on 10 seconds without power, then insert new batteries.
If nothing helps and the device is warranty, do not attempt to disassemble the sealed electronics unit.A self-infringement of the seals will lead to denial of service.