1. Product Overview
This product is a replacement electric control dust box and water tank assembly designed for the ROIDMI EVE Plus robot vacuum cleaner. It integrates both dust collection and water storage functionalities, crucial for the vacuum's cleaning and mopping operations. The design focuses on enhanced filtration, reduced operational noise, and extended product lifespan through durable materials and an optimized water circulation system.
Compatibility: This accessory is specifically designed for and compatible with the ROIDMI EVE Plus Robot Vacuum Cleaner.

Figure 1: Top view of the KNVZNWFF Hei man ba electric control dust box and water tank assembly.
2. Installation Guide
Follow these steps to properly install or replace the electric control dust box and water tank in your ROIDMI EVE Plus robot vacuum cleaner.
- Power Off: Ensure your ROIDMI EVE Plus robot vacuum cleaner is powered off and disconnected from its charging dock before beginning installation.
- Remove Old Component: Locate the existing dust box and water tank assembly on your robot vacuum. Typically, there is a release button or latch to remove it. Gently press the release mechanism and slide out the old component.
- Prepare New Component: If applicable, open the lid of the new dust box/water tank (as shown in Figure 2) to inspect the filter and ensure it is properly seated.
- Insert New Component: Align the new electric control dust box and water tank with the slot in the robot vacuum cleaner. Slide it in firmly until you hear a click, indicating it is securely locked in place.
- Verify Installation: Gently tug on the installed component to ensure it is stable and does not easily come loose.

Figure 2: The dust box and water tank with the lid open, showing the filter compartment.
3. Operation
Once installed, the electric control dust box and water tank will function automatically with your ROIDMI EVE Plus robot vacuum cleaner. This integrated unit manages both dry debris collection and water distribution for mopping. The optimized design ensures efficient filtration of fine dust particles, preventing leakage, and contributes to a quieter operation by reducing resonance from aging parts.
The water circulation system is designed for environmental friendliness and water-saving, ensuring effective cleaning with minimal waste.

Figure 3: Top and bottom views of the dust box and water tank, illustrating its integrated design.
4. Maintenance and Care
Regular maintenance of the dust box and water tank is essential to ensure optimal performance and extend the lifespan of your robot vacuum cleaner.
- Emptying the Dust Box: After each cleaning cycle, or as needed, remove the dust box and empty its contents into a waste bin.
- Cleaning the Filter: The filter inside the dust box should be cleaned regularly. Tap it gently to remove dust or use a small brush. For thorough cleaning, the filter can be rinsed with water.
- Drying After Washing: If you wash the dust box or filter with water, ensure it is completely dry before reinserting it into the vacuum cleaner. This prevents mold growth and damage to the electronic components.
- Cleaning the Water Tank: Periodically rinse the water tank to prevent residue buildup. Use clean water only.
- Inspection: Regularly inspect the seals and connections for any signs of wear or damage. Replace the component if significant wear is observed to maintain filtration efficiency and prevent leaks.
5. Troubleshooting
If you encounter issues with your electric control dust box and water tank, consider the following:
- Reduced Suction/Filtration: Check if the dust box is full or if the filter is clogged. Clean or replace the filter as necessary. Ensure the dust box is properly sealed.
- Water Leakage: Verify that the water tank is correctly installed and securely latched. Inspect the seals for any damage or misalignment.
- Increased Noise: Ensure the component is installed correctly and all parts are securely fitted. Excessive noise might indicate an issue with the vacuum cleaner itself rather than the accessory.
- No Water Dispensing: Check if the water tank is filled and properly installed. Ensure there are no blockages in the water outlets.
6. Product Specifications
| Feature | Detail |
|---|---|
| Brand | KNVZNWFF |
| Model Name | Hei man ba |
| Compatibility | ROIDMI EVE Plus Robot Vacuum Cleaner |
| Material | Plastic |
| Product Dimensions | Approximately 3"L x 2"W x 1"H |
| Item Weight | Approximately 1.76 ounces (50 grams) |
| Function | Electric Control Dust Box & Water Tank |
7. Warranty and Support
For warranty information or technical support, please refer to the original purchase documentation or contact the seller directly. Keep your proof of purchase for any warranty claims.