Assembly of the dispenser Xiaomi for soap: a step-by-step guide with photos and tips

Xiaomi’s automatic liquid soap dispensers have become a popular solution for maintaining hygiene in bathrooms and kitchens. These devices not only save cleaning product consumption, but also add convenience through contactless delivery. However, many users face difficulties in the first assembly — especially if the instruction is in Chinese or lost. In this article, we will discuss the phased assembly of the Xiaomi Mijia Smart Soap Dispenser dispenser (and compatible models), pay attention to typical errors and give recommendations for setting.

It is important to understand that the design of Xiaomi dispensers may vary slightly depending on the version (for example, the model). DJT11LM or ZNMS01JM). But the general principle of assembly remains the same: if you bought the device in disassembled form (for example, on AliExpress without the original packaging) or want to replace parts, this guide will help to avoid breakdowns. We will also look at how to properly refuel the tank and synchronize the dispenser with the Mi Home application for remote control.

Preparation: What will be needed for assembly

Before you start the assembly, check the equipment of the dispenser.

• 📦 Main body with infrared sensor
• 🔋 Battery (usually 18650 by 2000–2600 mAh)
• 🔧 Pumping mechanism with silicone tubes
• 💧 Reservoir for liquid (volume 250-300 ml)
• 🔌 Charging cable (usually) USB Type-C)
• 📄 Short instructions (often in Chinese)

If a piece is missing, you can buy it separately, for example, the original handsets for Xiaomi Mijia are sold under the article. ZNMS01JM-002. Also prepare the tools:

• ⚒️ Screwdriver cross (for fixing the body)
• 🧴 Alcohol wipes (for cleaning contacts)
• 🔍 Loop (useful for checking chips if the dispenser is not turned on)
• 📏 Line or bar (for measuring the length of the tubes)

⚠️ Warning: Do not use metal tools to assemble the pump mechanism - they can damage the silicone seals. Optimally work with plastic shoulder blades or wooden sticks.

If you are assembling a dispenser after repair (e.g., replacing a pump), make sure all parts are dry. Moisture on the board can cause a short circuit. To check the tightness of the tank, fill it with water for 1-2 hours before final assembly.

Diagram of the device of the dispenser Xiaomi: analysis of key nodes

To assemble a dispenser properly, you need to understand its internal structure.

1. The electronic circuit board controls the power, the sensor and the pump, and there's a charging connector.

Below is a table with the technical characteristics of popular models of dispensers Xiaomi:

Critical nuance: In models with adjustable portion (for example, DJT11LM) The amount of soap you give out depends on how long you press the pump, and if the dispenser gives out too much or too little liquid, the problem may be incorrect assembly of silicone tubes or wear of seals.

Step-by-step instructions for the assembly of the dispenser

Now, let's get to the practical part. Follow the instructions in strict order to avoid errors.

Step 1: Installation of pump and tubes

Start by mounting a pumping mechanism. It consists of:

• 🔄 Motor with gears.
• 🟢 Silicone tubes (length) ~15cm)
• 🔘 Reverse valve (prevents fluid leakage)

Algorithm of action:

1. Connect the short tube to the pump outlet (it goes to the dispenser nozzle).
2. Connect a long tube to the inlet hole - it will take soap from the tank.
3. Make sure the tubes are not twisted or clamped. The bend of the tube is a common cause of dispensing failure.

Step 2: Fixing the reservoir

The tank is placed at the bottom of the case, before installation:

• 🧼 Wash the container with warm water and soap (even if it is new).
• 🔍 Check the sealing ring on the bottom - it should fit tightly.
• 💧 Pour some water and make sure there are no leaks.

Insert the tank into the grooves of the case before clicking. The fluid intake tube should be immersed in the soap by 1-2 cm - if it lies on the bottom, the pump will suck in air.

Step 3: assembling an electronic unit

This stage requires care:

1. Install the battery in the compartment, observing polarity (+ and −).
2. Connect the power connector to the board. It's usually marked. PWR or BAT.
3. Secure the board with screws (use a cross screwdriver). Don't drag it over, it could damage the tracks.

After you assemble the electronic unit, check the indicator. When you connect to the charger, a red or blue LED should light up.

Step 4: Fixing the upper cover

The final step is to fix the top of the body.

• 🔗 Combine the grooves on the lid with guides on the basis of.
• 🔊 Make sure the soap nozzle is not blocked by the lid.
• 🔧 Tighten the screws evenly to avoid distortions.

After assembly, test the dispenser: bring your hand to the sensor at a distance of 10-15 cm. If soap does not arrive, check:

• 🔋 Battery charge (minimum 20%).
• 💡 LED performance (must flash when activated).
• 🚰 Position of tubes (especially the return valve).

💡

If the dispenser gives out soap in jerks, try to reduce the viscosity of the liquid by diluting it with water (1:1).

Common Assembly Mistakes and How to Avoid Them

Even when following the instructions, users often make mistakes that lead to improper operation of the dispenser.

1. Incorrect installation of tubes

Situation: The dispenser buzzes, but the soap is not coming in.

Reason: The tubes are confused or clamped. The inlet tube (from the tank) must connect to the IN-pump connector, weekend to OUT.

Solution: Reconnect the tubes, making sure they're not curved at right angles. Use tweezers for neat stacking.

2. Air entering the system

Situation: The dispenser gives out soap with bubbles or unstable.

The reason: Air in the tubes or the tank, and this happens when the tube is not immersed in the liquid or the tank seal is damaged.

Solution: Blow the tubes (you can mouth) and refill the tank by holding the tube at the bottom.

Motion sensor malfunction

Situation: The dispenser does not respond to the hand, but works with manual pressing.

Cause: Sensor lens contamination or failure in sensitivity settings.

Solution: Wipe the sensor with an alcohol wipe. If the problem persists, reset the settings via the Mi Home app (Device section) → Reset).

⚠️ Warning: If the dispenser starts leaking after assembly, immediately disconnect it from power and check the integrity of the silicone seals. 80% of leaks are caused by improper tank installation or wear of the rings.

Configure the dispenser through the Mi Home app

After mechanical assembly, the dispenser needs to be synchronized with the smartphone for remote control.

1. Download the Mi Home app (available for Android and iOS).
2. Create an account or sign in via Xiaomi ID.
3. Click Add Add the device → Choose the Smart Home category → Soap dispenser.
4. Follow the instructions on the screen (usually you need to hold the button on the dispenser for 3-5 seconds to activate the pairing mode).

In the menu of the device you can:

• 📊 Adjust the portion size (from 0.3 to 1.5 ml).
• ⏱️ Set the sensor delay (by default 0.5 seconds).
• 🔄 Enable the power saving mode (disables the lighting).
• 🔔 Set up notifications about low soap levels.

If the dispenser is not connected to the application:

• 📶 Check that the smartphone and dispenser are on the same 2.4 GHz Wi-Fi network (5 GHz not supported).
• 🔄 Reset the dispenser (hold the 10 seconds button).
• 📱 Update the Mi Home app to the latest version.

💡

To keep the dispenser running smoothly in the Mi Home app, disable Auto Update. Some updates may reset custom portion settings.

Maintenance and care of the dispenser

To make the dispenser last longer, follow the care recommendations:

1. Cleaning of the tank and tubes

Rinse the container and silicone parts once every 2-3 weeks:

• 🧽 Use a warm soap solution (without abrasives!).
• 🚿 Blow the tubes with compressed air (for example, a pear for an enema).
• 🔬 For disinfection, use a solution of vinegar (1: 1 with water) or hydrogen peroxide.

Replacement of seals

Silicone rings and valves wear out after 6-12 months.

• 💦 Leaks under the tank.
• 🌀 Unstable supply of soap.
• 🔊 Extraneous noise during pump operation.

Replace the seals with the original (article) ZNMS01JM-003) or similar in size.

Storage in non-operable condition

If the dispenser is not used for a long time (for example, during a vacation):

• 🔋 Remove the battery (to avoid discharge).
• 💧 Completely drain the liquid and dry the tank.
• 📦 Store in a dry place at a temperature of 10–30°C.

The average life of Xiaomi dispensers with proper care is 3-5 years. the most vulnerable elements are the battery (loss capacity in 2-3 years) and the pump (wears out when using thick gels).

Modding and upgrade of the dispenser

Advanced users can improve the dispenser with the help of improvements:

1. Increased reservoir volume

Standard 250-300 ml containers require frequent refueling.

• 🧴 Buy a larger tank (for example, from Viomi to 400 ml) and adapt the mounts.
• 🔧 Extend silicone tubes (sold in aquarium stores).

Replacement of the battery

If the original 18650 battery runs out in a day, replace it with:

• 🔋 Samsung 35E (3,500 mAh – Increases autonomy to 8-12 months.
• 🔋 LG MJ1 (3500 mAh – more stable operation at low temperatures.

Important: the new battery must maintain a discharge current at least 1A.

3. Firmware of alternative software

For models on the platform ESP8266 (For example, some Xiaomi clones, you can install Tasmota firmware or ESPHome:

• 🌐 Home Assistant integration without Xiaomi cloud.
• 📈 Advanced portion settings and delays.
• 🔄 Scheduled automation (e.g., disinfection at night).

⚠️ Warning: Firmware re-flashing will void the warranty and may cause the device to fail.Before the process, backup the original firmware through ESP Flash Tool.

FAQ: Frequent questions about assembly and operation