Full cleaning of the robot vacuum cleaner Xiaomi Dream: from filters to sensors

Xiaomi Dream, also known as Mi Robot Vacuum-Mop 2 Pro or DreamBot depending on the region, requires regular maintenance to keep performance at maximum. Over time, its mechanisms accumulate dust, hair and small debris, leading to loss of suction power, navigation errors and even breakdowns. This article takes a step-by-step look at all the steps of cleaning, from basic procedures to deep cleaning of hidden nodes, taking into account the characteristics of the models 2022-2026.

You'll learn how to properly disassemble a vacuum cleaner without risking damage to sensors, how to wash filters (and whether they can be washed), how to clean the side brushes of wound hair, and why, after cleaning the LiDAR sensor, the robot begins to more accurately map the room. We'll also analyze typical user errors — for example, why you can not dry filters with a hairdryer or wash the main unit under running water.

The instructions are suitable for all Xiaomi Dream modifications, including versions with wet cleaning function (mop).If your model is equipped with a self-cleaning station, there is a separate section on its maintenance at the end of the article.

Preparation for cleaning: what will be needed

Before you start, prepare tools and consumables, most of which will be at home, but some will have to buy more, such as a special brush for cleaning filters or silicone grease for wheels.

• 🧹 Soft brush (old tooth or makeup is suitable) - to remove dust from hard-to-reach places.
• 🧴 Soap solution (warm water) + neutral detergent, for example, for dishes).
• 🧻 Microfiber cloth - for cleaning the case and sensors.
• ⚙️ Screwdriver cross (usually) PH0 or PH1) — disassemble.
• 🔧 Tweezers – will help to remove hair from the bearings of brushes.
• 💧 Spray for electronics (e.g, WD-40 Specialist Contact Cleaner – for cleaning contacts.

⚠️ Warning: Never use abrasive sponges, hard brushes or aggressive detergents (such as chlorine or acetone) that will damage plastic parts and rubber seals. Avoid direct water ingress on electronic components, which can cause contact corrosion.

If you're cleaning the vacuum cleaner for the first time, take a picture of the location of all the parts before disassembling, which will help avoid errors in reverse assembly. L10S Ultra) additionally prepare a dry brush with a long pile - it is convenient to remove dust from a rotating prism.

Cleaning the main filter and garbage container

The filter and the dumpster are the light vacuum cleaners that clog the fastest. Xiaomi Dream models use the same sleeves. HEPA-filter H11 or H12, It captures up to 99.5 percent of the fine particles, and if left uncleaned, it loses up to 30 percent of its suction power after 2-3 weeks of active use.

To remove the filter:

1. Open the back cover of the vacuum cleaner (usually it is fixed with a latch).
2. Take out the garbage container and separate the filter from it (it is attached to clamps or threads).
3. Remove the large garbage from the container manually, then rinse it with warm water.

⚠️ Attention: The filter can only be washed with water without detergents! Soap or dish gel will leave a film that will impair the throughput. After washing, thoroughly dry the filter for 24 hours outdoors. Using a hair dryer or battery will deform the material.

For models with auto-cleaning station (e.g. DreamBot) S10+) Check the secondary filter at the docking station, which is located on the side and cleans similarly, but less often every 1-2 months.

Cleaning of brushes: main and side

The brushes are the most problematic knot in any robot vacuum cleaner. The hair, thread and fur of animals are wound onto the shaft, blocking rotation. The Xiaomi Dream models use a main brush with rubber blades (for better hair collection) and two side brushes for cleaning along the walls.

To clean the main brush:

1. Turn the vacuum cleaner over and remove the brush by pressing the locks on the sides.
2. Remove the hair and debris from the shaft and blades. Use tweezers for convenience.
3. Wash the brush under running water if there are sticky contaminants on the blades.
4. Check the bearings at the ends of the shaft, they should rotate freely. If there is a backlash, it's time to replace the brush.

The side brushes are easier to clean:

• 🔄 Remove the brush by pulling it down (it is attached to the axis).
• 🧶 Remove the hair with scissors or tweezers.
• 💦 Wipe the brush with a wet cloth, then dry.

💡 Useful advice: If the side brushes are worn out (bristles shorter than 5 mm), replace them. worn brushes do not bring debris to the main brush, which causes the vacuum cleaner to pass dirt along the boards.

Cleaning sensors and optical sensors

Sensors are responsible for navigation and detection of obstacles. Xiaomi Dream uses:

• 🔦 LiDAR (laser rangefinder) - builds a room map.
• 👁️ Optical sensors – detects drops and obstacles.
• 🧲 Infrared sensors – determine the distance to the walls.

For cleaning LiDAR (located under a transparent dome on top):

1. Wipe the dome with a dry microfiber cloth (do not use alcohol!).
2. If dust accumulates inside, carefully remove it with a brush with a soft pile.
3. Check the rotation of the prism - it should spin freely, without jamming.

Optical sensors (usually located on the bottom, on the sides) are cleaned with a cotton swab dipped in distilled water. Avoid pressure - the sensors are fragile!

⚠️ Warning: If the robot still goes blind after cleaning LiDAR (not building a map or moving chaoticly), check the transparency of the dome. Over time, it may become cloudy from scratches. In this case, a replacement (DreamBot dome article) will be required. L10S — ZNMSD02ZM).

Deep cleaning: fan, engine and wheels

If the vacuum cleaner starts to buzz louder than usual or loses power even after cleaning the filter, the problem may lie in the fan or engine. In Xiaomi Dream models, partial disassembly is required to access them.

To clean the fan:

1. Remove the bottom cover of the vacuum cleaner (a screwdriver will be required).
2. Disconnect the fan power connector (usually located next to the dumpster).
3. Remove dust from the fan blades with a brush or compressed air (a keyboard cleaner).
4. Check the engine bearings – if they creak, apply 1-2 drops of silicone lubricant.

The wheels also need attention:

• 🚗 Remove the wheels by pulling them down (they are attached to the axle).
• 🧹 Remove the hair and debris from the tread.
• 🛢️ Lubricate the wheel axles with silicone lubrication (do not use it) WD-40 — It attracts dust!).

⚠️ Warning: If you find burnt contacts or melted insulation on the wires during the disassembly, do not turn on the vacuum cleaner! This is a sign of short circuit. contact Xiaomi Service Center or replace the control board (DreamBot article) L10S — NXP5001ZM).

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If the vacuum cleaner makes a high whistle when operating, it's a sign of clogging between the dumpster and the fan, blow it with compressed air or clean it with a flexible brush.

Cleaning of the auto-cleaning station (for models with a docking station)

Xiaomi Dream models with automatic garbage container cleaning (e.g. DreamBot) S10+ or L10S Ultra) require additional maintenance of the docking station, which accumulates dust that can block the mechanism of garbage release.

To clean up the station:

1. Disconnect the station from the network and remove the garbage bag (located at the back).
2. Clean the duct (plastic tube) of dust with a brush or vacuum cleaner.
3. Wipe the charging contacts at the station and vacuum cleaner with a cotton swab soaked in alcohol.
4. Check the rubber gasket between the station and the vacuum cleaner - it should be whole and elastic.

💡 Useful tip: The garbage bag in the dock is recommended to be replaced every 1-2 months (DreamBot article) S10+ — ZNMSD01ZM). Using a bag longer than this period leads to a decrease in the power of the suction station and the appearance of an unpleasant smell.

If the station has stopped automatically emptying the vacuum cleaner, check:

• 🔌 Network connection (the indicator at the station should be green).
• 🚪 Correct position of vacuum cleaner at the station (click of fixation should be heard).
• 🌀 Cleanliness of the infrared sensor at the station (front).

Frequent Mistakes and How to Avoid Them

Many users make cleaning errors that cause breakages, and here are the most common ones:

• 🚫 Washing electronic components with water. Even a drop of moisture on the board can cause corrosion. Use electronics spray or dry brush to clean.
• 🚫 Drying the filter with a hair dryer or on a battery, and high temperatures warp the material, and the filter stops fitting tightly.
• 🚫 Using sharp objects (knife, scissors) to remove hair from brushes, it scratches the plastic and damages the blades.
• 🚫 Ignoring errors on the vacuum cleaner screen, such as an error E3 means clogging of the fan, and E5 — sidebrush.

If the vacuum cleaner does not turn on after cleaning or works unstablely, check:

• Proper assembly (all connectors must be connected, the covers - fixed).
• Battery status (if the vacuum cleaner discharges quickly, it may be necessary to replace the battery).
• Update firmware (in the Settings menu) → Update of the PO).

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Regular cleaning extends the life of the vacuum cleaner by 30-50%, and pay special attention to filters and brushes, which cause 80% of all malfunctions.

FAQ: Answers to Frequent Questions