Modern home automation devices, such as the Xiaomi Mijia or Soocas touch dispensers, have become an integral part of many apartments’ interiors, not only simplifying hygiene procedures, but also saving money thanks to precise dosage, but owners often face difficulties when it comes to opening the case to refuel or replace the battery.
These gadgets are designed to look aesthetically pleasing and protect the electronics from moisture, which makes them leaky. It is this tightness that becomes an obstacle when the soap runs out or the battery runs out. In this article, we will discuss in detail how to open a touch dispenser without damaging the latches and seals, and also discuss the nuances of maintenance of various models.
An improper opening can cause leakage or a failure of the pump mechanism, so it's important to understand the lid attachment and know where the hidden locks are located. We'll look at a step-by-step algorithm that allows you to safely access the internal tank.
⚠️ Warning: Before any manipulation, be sure to remove the device from the charger or remove the batteries to avoid short circuits when moisture hits the contacts.
Design features and types of fastenings
Xiaomi's smart dispensers are designed with minimalism, which means no visible screws on the outer surface of the body. The upper part, where the sensor module and pump are located, is fastened to the bottom tank using a threaded connection or a system of hidden latches. Understanding what type of attachment is used in your model is a key point of successful opening.
Most Mijia Automatic Inductions use classic carvings, the top of which is wound up on the neck of a bottle, similar to a regular water bottle, but with a tighter run to ensure tightness, and sometimes the carvings can get stuck with dry soap, which requires additional effort.
More advanced models, such as some versions of Soocas or specialty foam series, can use a rotary fixture system (bayonet connection), in which case you need to combine the tags on the body and rotate the head at a certain angle, trying to unscrew such a design counterclockwise without unlocking will lead to breakage of the plastic protrusions.
It's also important to consider the seal material. There's always a silicone pad inside the thread that prevents leakage. It can shift or deform when opened frequently, so you have to be careful when you're in service to avoid damaging this important sealing element.
Tools and workplace preparation required
Before you start disassembling, you need to prepare the workspace, because there's fluid inside the device, it's best to do the procedure over the sink or cover the table with a waterproof film, which will protect furniture and electronics from the random spills that can occur when the leakage is broken.
To make it easier to unscrew the tight threaded joint, you may need simple tools: rubber gloves or a piece of dense rubber fabric (such as a mouse mat or a special wipe) will significantly increase the grip of the hands with the smooth plastic of the body, which allows you to transmit more torque without the risk of slipping.
- 🧤 Rubber gloves – provide a reliable grip and protect the skin from chemistry.
- 🧻 Paper towels – for instant removal of soap droplets from thread.
- 🔦 Lantern - necessary for inspection of internal seals and search for labels.
- 🧴 Warm water – will help soften the frozen residues of soap on the thread.
If you plan to not only refuel, but also clean the device, prepare a container with warm water. You can not soak the electronic part (the dispenser head) completely, but you need to rinse the thread and the pump nose. The use of aggressive solvents is prohibited, since they can destroy plastic or damage silicone seals.
☑️ Preparation for dissection of the dispenser
Step-by-step: how to unscrew the top part
The process of opening the dispenser depends on the type of connection, but the general algorithm of actions is similar. First, make sure that the device is turned off. Then hold firmly with one hand the bottom of the tank (bottle), and the second one the upper head with the sensor, which will prevent the entire structure from turning and allow you to apply force to the thread.
Start rotating the top counterclockwise. If you use a threaded connection, you'll feel resistance. Don't be afraid to exert moderate force, the plastic in Xiaomi devices is strong enough. If the connection doesn't lend itself, try to warm the joint slightly with warm water (not boiling water!) or tap on the side surface with your finger to move the crystals of dried soap.
What to do if the cover does not open?
Once the connection is removed, unscrew the head completely, and you'll see the fluid drawer and the pump spout, and if there's any residue of old soap inside, it needs to be removed before refilling, or it can mix different chemicals, leading to a clogging.
⚠️ Warning: Never try to cover with a knife or screwdriver. The plastic of the case is very thin and easily cracks with a point mechanical action, after which the leakage will not be restored.
Refilling and replacement of consumables
One of the main features of Xiaomi’s smart dispensers is the ability to use both original cartridges and regular liquid soap. However, the consistency of the product plays a critical role. Too thick soap can clog thin pump channels, and too liquid can flow away.
If you use a foam-dosing model, be sure to dilute your regular liquid soap with water in the proportion indicated in the instructions (usually 1:3 or 1:4). For models with a conventional dispenser, it is better to use medium viscosity. The ideal viscosity for Xiaomi dispensers is from 800 to 1200 mPa·s, which corresponds to most industrial hand gels.
The refueling process is as follows:
- Remove the top of the device.
- If there is old soap left in the tank, rinse it with warm water.
- Pour a new remedy without reaching 1-2 cm to the edge of the neck.
- Carefully screw the head back, trying not to skew the thread.
After assembly, it may take a few taps (usually 3-5) to fill the system with fluid and start to release foam or gel, which is a normal situation called "suffocation" of the system.
Maintenance and cleaning of internal machinery
Regular maintenance is key to long-term electronics, and inside the dispenser is a peristal pump or piston mechanism that can become clogged over time, signs of contamination are weak pressure, strange sounds when working, or the device's failure to give out soap when liquid is present.
To clean, disassemble the device as described above. Remove the silicone tube (if the design permits) and rinse it with warm water. The foam outlet nozzle also requires attention: it can be soaked in warm water for 10-15 minutes to dissolve the hardened residues. Mechanical cleaning of the exit hole is possible only with a soft brush, the use of metal objects is prohibited.
| Element | Frequency of cleaning | Remedy. | Risks. |
|---|---|---|---|
| Outer hull | Once a week. | Wet wipe. | Scratches from abrasives |
| Nose of the dispenser | At every gas station. | Warm water | Canal clogging |
| Carving and gasket | Once a month | Soap solution | Loss of leakage |
| Touch panel. | As pollution progresses | Dry fabric | False positives |
Pay special attention to charging contacts (if the model is wireless). Contact oxidation is a common reason why the device stops turning on. Wipe them with a cotton swab slightly soaked in alcohol and let them dry before setting them on the base.
Typical problems after opening and their solution
Once you've reopened and reassembled the dispenser, there may be some nuances in how it works, most often due to improper assembly or air entering the system, and understanding the causes of these problems can help you quickly fix them without going to the service center.
If the dispenser is buzzing but not giving soap, check if the intake tube is fully immersed in the liquid and if there are air bubbles in it. Sometimes it helps to turn the device on and off several times in a row, and if the soap drips spontaneously, you may have twisted the lid too tightly or damaged the valve.
💡
The most common reason for the dispenser failure after refueling is air entering the pump. Simple pumping (5-10 quick activations) usually solves the problem.
In case the sensor has stopped responding after assembly, check if moisture has entered the internal contacts of the control board. Also make sure that the batteries (if used) are inserted correctly and have sufficient charge.
⚠️ Warning: If you notice leakage at the thread joint after assembly, don't ignore it. The leaking fluid can get into the battery compartment and cause contacts to corrosion, which will permanently disable the device.