How to properly clean the dispenser for liquid soap Xiaomi: from disassembly to disinfection

Xiaomi’s automatic liquid soap dispensers are not only a stylish solution for the bathroom or kitchen, but also a device that requires regular maintenance. Over time, soapy plaque accumulates inside the tank, and deposits form in the tubes and nozzles that can become a breeding ground for bacteria or cause sensor breakdowns. A particularly pressing problem for models with an infrared sensor (for example, Xiaomi Mijia Automatic Soap Dispenser or Viomi Smart Soap Dispenser), where contamination interferes with the correct operation of the device.

In this article, we will look at all the cleaning steps, from tool preparation to deep disinfection, and how to avoid the typical errors that cause the dispenser to stop dispensing soap or give it out in the wrong portions. This will help bring the device back to life without the need for service.

Preparation for cleaning: what you need and safety measures

Before you start disassembling, make sure you have everything you need on hand. Most Xiaomi models (like Mijia) SJWS01JY viomi V-SOAP01) They're similar in design, but they can be different in type of mounts or tank material:

• 🧼 Warm water (not hotter than 40)°C to prevent deformation of plastic).
• 🧽 Acetic acid 9% or citric acid (for dissolving soapstone).
• 🧴 Toothbrush with soft bristles (for cleaning the nozzle and hard-to-reach places).
• 🧷 Plastic tweezers or toothpicks (to clean the feed hole).
• 🧼 Liquid for washing dishes (without abrasives!).
• 🔋 Dry wipes made of microfiber (for wiping the sensor and body).
• 🛠️ Screwdriver with a cross-tipped (for models with screw fasteners).

⚠️ Warning: Never use acetone, gasoline or aggressive detergents (such as Domestos or Sanita) to clean the silicone seals and can damage the touchpad. Also avoid metal tools – they scratch plastic and leave microcracks in which dirt accumulates.

Before starting work, be sure to remove the batteries (if the dispenser works from them) or disconnect from the network (for models with a high-speed battery). USB-This will prevent short circuits from getting moisture on the contacts. If your device is equipped with a battery (like in the Xiaomi Smartmi Soap Dispenser), make sure it is discharged to 0% - this will make it easier to disassemble.

Dispenser disassembly: step-by-step instructions for popular models

Xiaomi’s dispensers typically consist of three main parts: a top nozzle cover, a soap tank, and a bottom body with electronics. SJWS01JY viomi V-SOAP02) It takes no more than 5 minutes, but there are nuances depending on the type of fastening.

General disassembly algorithm:

1. Remove the top cover. Most models have latches on it -- gently pull it upwards, starting at the back. If the cover doesn't lend itself, check if there are any hidden screws under the stickers or rubber legs.
2. Remove the soap tank. In pump models like the Xiaomi Smartmi, the tank can be screwed to the base -- use a screwdriver. In gravity dispensers like the Viomi Basic, the tank is simply removed.
3. Disconnect the feed tube. It attaches to the pump or valve -- pull gently to the side without overbending. In some models, the tube is fixed with a plastic clip (it needs to be compressed).
4. Remove the bottom panel. This is where the batteries/battery and the control board are located. SJWS01JY) panel can be mounted on latches or screws under rubber plugs.

⚠️ Attention: In contactless sensor dispensers (infrared or capacitive), there is a board with a sensor on the bottom panel. Don't touch it with wet hands or clean it with alcohol - this can disrupt calibration. Use a dry brush or compressed air to remove dirt.

If your model is equipped UV-Disinfection lamp (as in Viomi) V-SOAP03), Don't look at it while you're working -- ultraviolet radiation is bad for your eyes. When you disassemble, turn off the lamp by removing the batteries or pressing the power button for 5 seconds.

Make sure the dispenser is off-power|

Prepare a container for draining the residues of soap|

Take a picture of the details before disassembly|

Check for hidden screws under stickers|

Use plastic tools for dismantling-->

Cleaning the tank and supply tube: remove soapstone and mold

The tank and the tube are the most problematic areas of the dispenser, and not only does the soapy plaque accumulate here, but bacteria (like Pseudomonas aeruginosa) that can cause skin irritation.

1. Pre-soaking.

Fill the tank with warm water (1:1 with vinegar 9%) and leave for 30 to 60 minutes. To enhance the effect, you can add 1 tsp of citric acid. This will dissolve mineral deposits and disinfect the surface. For models with metal parts (for example, Viomi Premium), reduce the soaking time to 20 minutes to avoid corrosion.

2. Mechanical cleaning.

After soaking:

• 🧽 Wipe the walls of the tank with a soft sponge (not abrasive!). Pay attention to the corners and joints.
• 🪥 Clean the feed tube with a toothpick or a flexible pear soaked in acetic solution. If the tube is completely clogged, wash it with syringe water (without a needle!).
• 🦷 To clean the nozzle, use a toothbrush soaked in soap solution. With rotational movements, remove the plaque from the inside and outside.

3. Disinfection.

After mechanical cleaning, rinse all the details with boiled water and treat one of the ways:

⚠️ Warning: If there are black dots or mucus in the tank, this is a sign of mold, in which case, after disinfection, put a soda solution (1 tbsp per 200 ml of water) into the dispenser and leave it for 1 hour. Using such a device without cleaning is dangerous - mold spores can cause allergies or respiratory diseases.

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If you have an unpleasant odor in the tube after cleaning, rinse it with a solution of water with tea tree essential oil (2-3 drops per 100 ml), which will kill bacteria and give a slight aroma.

Cleaning the sensor and electronics: why the dispenser does not respond to the hand

If the dispenser stopped responding to the movement of the hand or outputs soap arbitrarily, the problem is likely to be contamination of the sensor or contacts. Xiaomi models use two types of sensors:

• 👁️ Infrared (IR) — responds to beam interruption (e.g. in Mijia) SJWS01JY).
• 🖐️ Capacitive – activates the approach of the hand (for example, in Viomi). V-SOAP03).

To clean the sensor:

1. Turn off the power and remove the bottom panel (as described in the section on disassembly).
2. Find the sensor, it's a small window. IR) or metal plate (for capacitive capacitive).
3. Wipe the surface with a dry microfiber wipe. For persistent contaminants, use a cotton swab dipped in isopropyl alcohol (70%).
4. Check transparency IR-windows - if it is cloudy, gently wipe alcohol on both sides.
5. Make sure the board is free of oxidation or moisture. Dry with a hair dryer (cold air!) for 5 minutes if necessary.

If the dispenser is still not working:

• 🔋 Check the contacts of the batteries, they may have oxidized. Clean them with a lasticle or alcohol.
• 🔌 For models with USB-Power (Xiaomi Smartmi) check the integrity of the cable and connector.
• 🔄 Reset to factory settings by holding the power button for 10 seconds (works for most models).

⚠️ Attention: If the sensor doesn't respond after cleaning, the problem may be a board malfunction, in which case it's not recommended to solder the contacts yourself, it's better to contact the service. However, in 80% of cases, the problem is caused by pollution, not breakdown.

Assembly and testing: how to avoid leaks and failures

After cleaning, all parts must be completely dry, and the moisture left in the tube or tank can lead to dilution of soap or corrosion of metal elements.

1. Check the seals. The rubber or silicone rings on the tank and tube should be whole and fit tightly. If they have lost elasticity, replace them (you can cut them out of a silicone sheet 1-2 mm thick).
2. Set the feed tube. It should enter the pump or valve before you click. It will cause leaks or distortions.
3. Secure the tank in screw-mounted models (Viomi) V-SOAP02) Don’t pull the screws – it can warp the plastic.
4. Set the lid. Make sure the nozzle matches the hole in the body. In some models, the lid is fixed in a counterclockwise turn.

Before the first use after cleaning:

1. Pour clean water (no soap!) into the tank and check the dispenser to remove any vinegar or detergent.
2. Adjust the portion size (if the model supports adjustment). In Xiaomi Mijia, this is done by long pressing the power button.
3. Check the leaks -- put the dispenser on a napkin and wait 10 minutes. If you see any drops, take the device apart and check the seals.

⚠️ Warning: If the dispenser starts spitting with soap or jerks it out after assembly, there is likely air left in the tube. To eliminate the plug, press the mechanical button several times (if any) or tilt the device at an angle of 45.° and wait 1-2 minutes.

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After cleaning, always test the dispenser on water, not soap, and this will help avoid a chemical reaction between the residues of the detergent and new soap, which can lead to the formation of flakes or foam.

Frequent cleaning errors and how to avoid them

Even experienced users sometimes make mistakes that cause the dispenser to break, and here are the most common mistakes and how to prevent them:

• 🚫 The plastic of the reservoir can deform at temperatures above 60°C. Use water not hotter than 40 for soaking.°C.
• 🚫 Metal cleaning. Needles, knives, or wire scratch the inner surfaces, which speeds up recontamination. Use only plastic or silicone tools.
• 🚫 Neglecting drying: Wet parts when assembled can cause short circuit or corrosion.Dry all elements for at least 1 hour (or use a cold air dryer).
• 🚫 Replacing the original soap with homemade soap, soaps high in glycerol or essential oils can clog the tube and leave a sticky coating. Use only liquid soap marked for automatic dispensers.
• 🚫 Storage of an empty dispenser. If the tank is long without soap, the silicone seals dry out and crack. Always leave some soap or water inside.

Another common mistake is not installing batteries correctly, and Xiaomi’s dispensers often have the opposite polarity of standard (plus on the right). If the device doesn’t turn on after assembly, flip the batteries over, and avoid mixing new and old batteries, which shortens their lifespan and can cause alkali leaks.

If your dispenser starts to make a buzzing sound when you're working, but you don't get soap, it's probably a blockage in the pump.

1. Disassemble the device and remove the pump (it is attached to the bottom panel).
2. Wash it under a stream of warm water, directing the flow into the feed hole.
3. Check the pump piston - if it is jammed, grease with silicone lubricant (not oil!).

Prevention: how to prolong the life of Xiaomi dispenser

To avoid frequent cleaning and breakdowns, follow these guidelines:

• 🔄 Change the soap every 2-3 weeks. Even if the tank is not empty, the liquid soap will eventually delaminate and form a sediment.
• 💧 Rinse the tank with water once a month. Just pour warm water, shake and drain.
• 🧼 Use only transparent soap without abrasives. Colored gels or scrubs clog the tube.
• 🔋 Remove the batteries in prolonged downtime, which will prevent contact oxidation.
• 🌡️ Keep the dispenser away from direct sunlight. UV radiation makes plastic brittle.

For models with built-in UV-lamp (Viomi) V-SOAP03) Turn it on for 10-15 minutes once a week, which will prevent bacteria from multiplying. If your dispenser is not equipped with a lamp, you can use a portable UV sterilizer (for example, Xiaomi Mi Portable). UV Sterilizer, placing a tank in it for 5-7 minutes.

If you use a dispenser in a public place (office, cafe), install it at least 30 cm from the sink. Water splashes can enter the sensor or battery compartment, causing corrosion. For additional protection, you can apply a hydrophobic coating (for example, Nano Protect).

FAQ: Answers to Frequent Questions