How to open the Xiaomi irrigator: disassembly, cleaning and replacement of parts

Xiaomi irrigators (especially the popular Oclean W10, Oclean X Pro or Soocas H3S) have become an integral part of oral hygiene for thousands of users. But even the most reliable device requires periodic maintenance: replacement of nozzles, cleaning of internal mechanisms or repair when a failure occurs. The main problem is that the manufacturer rarely discloses official disassembly instructions for fear of unprofessional intervention. In this article, we will discuss how to safely open the Xiaomi irrigator at home without damaging the case or electronics.

It's important to understand that disassembling the device will void the warranty if it's still valid. However, if the irrigator is no longer warranty-worthy, or you're willing to risk saving money at the service center, our recommendations will help save time and money. We'll look not only at mechanical disassembly, but also at the nuances of working with waterproof seals, latches and typical "pitfalls" (for example, why the device may not turn on after assembly).

This article will be suitable for owners of any Xiaomi irrigation models, as most of them have similar designs. If your model is different, check the details in the technical documentation or forums (we will give links to useful resources).

Preparation for disassembly: tools and security measures

Before you start a screwdriver, make sure you have everything you need, and the wrong tools are the main cause of damage to the body or the internal parts.

• 🔧 Plastic mediators or shoulder blades (to separate latches without scratches) Metal screwdrivers should not be used!
• 🔋 Multimeter (to check the contacts of the battery, if the irrigator is not turned on).
• 🧴 Isopropyl alcohol 90% (for cleaning contacts and removing plaque).
• 📦 Container for small parts (screws, springs, seals are easily lost).
• 🔍 Loop or flashlight (many fasteners are hidden and poorly visible).

Also prepare the workplace: the desk should be clean, the lights bright. disconnect the device from the network (if it is connected to the outlet) and remove the battery (if possible without disassembly). Xiaomi irrigators often have hidden screws under stickers or rubber legs - they need to be carefully removed without damaging.

⚠️ Note: If the irrigator falls or comes into contact with water (for example, after bathing in the bathroom), disassembly can be dangerous due to the risk of short circuit.

Step-by-step: how to disassemble the body of the irrigator

Most of Xiaomi's irrigators are designed with a two-piece body: the top (with a water tank) and the bottom (with electronics and a pump), and disassembly begins with the separation of these parts.

1. Turn over the irrigator and find rubber legs (usually 4). Tap them with a plastic spatula - often hidden under them screws like the Torx T5 or Phillips PH00.
2. Unscrew all visible screws. In the Oclean X Pro models, there may be an additional screw under the serial number sticker — tuck it carefully.
3. Insert the mediator between the top and bottom of the case (start at the corner where there are no buttons). Smoothly drive the tool along the seam, disengaging the latches. If the case does not respond, do not apply force, but check if all screws are unscrewed.
4. After the separation of the case, take a picture of the location of the plumes and wires - this will help with the reverse assembly.

Inside you'll see:

• Battery (usually at 1400-2000 mAh).
• Control board with chip and contacts.
• A pump with water pipes.
• The stainless stains (cannot be damaged!).

Power cut |Rubber legs removed |Hidden screws checked |Parts container prepared |Photographed initial state-->

⚠️ Note: In models with wireless charging (e.g. Soocas) H3S) There might be an induction coil under the top cover. Don't pull it, it's glued to the body!

Cleaning and replacing nozzles: what can be done without a complete disassembly

You don't always have to disassemble the irrigator completely, and if you want to replace the nozzle or clean it, you just have to remove the top of the device.

1. Press the button to fix the nozzle (usually located on the side or bottom of the holder).
2. Pull the nozzle up, it should come out without effort. If it doesn't work, don't pull: there may be scaling inside. Soak the nozzle in a vinegar solution (1:1 with water) for 30 minutes.
3. To clean the internal canals, use a tubing brush (sold in aquarium stores) or a toothpick wrapped in cotton.

If the nozzle is not removed even after soaking, the problem may be in the deformed retainer, in which case you will have to disassemble the case and replace the holder (parts can be ordered on AliExpress by model number).

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If the nozzles are often clogged, use filtered water - this will reduce the formation of plaque 3-4 times.

Common Mistakes in Disassembly and How to Avoid Them

Even experienced users sometimes make mistakes that cause the device to break down, and here are the most common ones:

• 🔌 Ignoring static electricity. Touching the board with your bare hands can damage the chips. Use an antistatic bracelet or at least touch a grounded object before you work.
• 💧 If you have cleaned the pump with water, dry all the parts thoroughly for at least 24 hours before assembly.
• 🔩 Tug screws. In ABS plastic cases (like Xiaomi) it is easy to rip the threads. Tighten the screws with a force of no more than 0.5 N·m.
• 🔄 Incorrect plume assembly. If the device doesn't work after assembly, check if you've flipped the display plume or buttons.

Another common problem is the loss of water resistance after disassembly.

• Check the integrity of the sealing rings (they should be elastic, without cracks).
• Apply silicone lubrication (e.g., WD-40 Specialist) to the gums.
• When assembly, make sure that the body converges without gaps - if there is a gap, then the seal has skewed somewhere.

Replacement of the battery: when it is necessary and how to do it

The batteries in Xiaomi irrigators last an average of 2-3 years, after which the device begins to quickly discharge or does not hold the charge. If the irrigator is running from the mains, but the battery is bloated or not charging, it needs to be replaced.

1. Disconnect the battery plume from the board (usually it is attached to the JST 2.0 connector).
2. Carefully tuck the battery with a plastic spatula - it can be glued with bilateral tape.
3. The new battery should have the same parameters: voltage (3.7V or 7.4V, see the old battery) and capacity (no less than the original).
4. So, solder or plug in the connector, check the polarity, and then backup will knock the board out.

Where to buy a battery? The best options are:

• Official parts on AliExpress (see the model of irrigator + "battery").
• Universal Li-ion batteries 18650 (suitable for many models, but you will need a soldering iron).
• Xiaomi service centers (expensive, but with a guarantee).

⚠️ Warning: If the battery is swelling, don't try to puncture or compress it! This can cause fire. Dispose of the battery at special reception points.

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Replacing the battery is better combined with cleaning the contacts of the board - this will prolong the life of the device by 30-50%.

Checking and assembling: how to make sure everything works

After disassembly and repair, you need to check the device before final assembly.

1. Visual inspection: Make sure all details are in place, no exposed wires or corrosion marks.
2. Button test: connect the board to the battery (without closing the case) and check the reaction to pressing. If the buttons do not work, check the plume.
3. Pump check: fill the tank with water and turn on the irrigator. The pressure should be uniform, without pulsations.
4. Tightness test: Wrap the body with a paper towel and turn the device on for 1-2 minutes. If the towel is dry, the assembly was successful.

If something went wrong:

• 🔊 The irrigator is buzzing, but the water is not coming → smack-up.
• 🔋 The device is not switched on. → Check the contacts of the battery and the fuse on the board.
• 💦 Water is coming from under the hull. → misplaced sealers.

Once you've done a successful check, assemble the case, twist the screws (don't pull over!) and put the rubber legs back on. If you've been cleaning or repairing the device, make a notebook with a date to help track the frequency of service.

Where to find spare parts and when to contact the service

If the showdown shows that the problem is more serious than you thought (for example, a board burned down or the case cracked), it may be cheaper to contact the service.

• 🔥 The fee is blackened or smells of a burn.
• 💔 The body cracked at the place of attachment of the pump.
• 🔌 After replacing the battery, the device does not charge.
• 📉 The irrigator works in jerks, although the pump is clean.

Where to buy spare parts for Xiaomi:

Official Xiaomi service centers in Russia can be found on the website mi.com/ru/service. Average cost of diagnosis — 500–1000 ₽, repairs 1500–5000 ₽ depending on the breakdown.

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Before buying parts on AliExpress, check the seller’s reviews and photos of real buyers – often the Chinese sends unoriginal parts of poor quality.

FAQ: Frequent questions about dismantling of Xiaomi irrigators