1. Product Overview
This manual provides instructions for the installation and maintenance of YHNNH replacement HEPA filters and sponges for compatible robot vacuum cleaners. Regular replacement of these components is essential for maintaining optimal cleaning performance and extending the lifespan of your device.
2. Compatibility
These replacement filters and sponges are compatible with the following robot vacuum cleaner models:
- ILIFE A4
- ILIFE A4S
- ILIFE A6
- Chuwi A4
- Ecovacs CEN550
3. Package Contents
Your package includes the following items:
- 10 x HEPA Filters
- 10 x Sponge Filters

Image: A complete set of 10 HEPA filters and 10 sponge filters as included in the package.
4. Installation Instructions
Follow these steps to replace the filters and sponges in your robot vacuum cleaner:
- Power Off: Ensure your robot vacuum cleaner is powered off and unplugged before beginning any maintenance.
- Locate Dust Bin: Open the top cover of your robot vacuum cleaner and remove the dust bin.
- Remove Old Filters: Carefully remove the old HEPA filter and sponge filter from the dust bin. Note their orientation.
- Insert New Sponge Filter: Place a new sponge filter into the designated slot in the dust bin. Ensure it sits flat and covers the entire area.
- Insert New HEPA Filter: Place a new HEPA filter on top of the sponge filter, ensuring it is securely seated. The tab on the HEPA filter should be accessible for future removal.
- Reinstall Dust Bin: Return the dust bin to its compartment in the robot vacuum cleaner and close the top cover.

Image: A single HEPA filter and a single sponge filter, ready for installation.
5. Operating Considerations
Once the new filters are installed, your robot vacuum cleaner will operate with improved filtration and suction efficiency. The filters work to capture fine dust particles and allergens, contributing to a cleaner home environment.
6. Maintenance
Regular maintenance of your filters is crucial for optimal performance:
- Cleaning Frequency: It is recommended to clean the HEPA filter and sponge filter every 1-2 weeks, depending on usage and household dust levels.
- Cleaning Method: Tap the HEPA filter gently against a trash can to dislodge dust. The sponge filter can be rinsed with water; ensure it is completely dry before reinstallation. Do not wash the HEPA filter with water.
- Replacement Frequency: For best results and to maintain cleaning efficiency, replace the HEPA filters and sponge filters every 2-3 months, or sooner if you notice a decrease in suction power or an increase in dust accumulation.
Proper maintenance helps to:
- Maintain stable suction power and improve cleaning efficiency.
- Reduce dust and debris accumulation, preventing unpleasant odors.
- Minimize dust adhering to furniture and fabrics, contributing to a cleaner living space.
- Lessen abnormal vibrations of the vacuum caused by unstable suction.
- Reduce dust damage to internal electrical components, extending the equipment's lifespan and reducing overall usage costs.
7. Troubleshooting
If you experience issues after filter replacement, consider the following:
- Reduced Suction: Ensure the filters are correctly installed and not clogged. If the filters are old, replace them with new ones.
- Unusual Noise: Check if the filters are properly seated. Loose filters can cause vibrations.
- Dust Leakage: Verify that the filters are fully inserted and the dust bin is correctly closed.
8. Specifications
| Component | Description |
|---|---|
| Filter Type | HEPA Filter and Sponge Filter |
| Dimensions (each filter) | 135mm x 50mm x 9mm (approximately) |
| Quantity | 10 HEPA Filters, 10 Sponge Filters (Total 20pcs) |

Image: Diagram illustrating the approximate dimensions of the filters (135mm x 50mm).
9. Warranty and Support
For any questions regarding product compatibility, installation, or performance, please contact the seller or manufacturer. Please refer to your purchase documentation for specific warranty information.