1. Product Overview
This manual provides instructions for the installation, maintenance, and general use of the replacement main roller brush designed for ILIFE W400, W455, and Medion MD 18379/18999 robotic vacuum cleaners. This brush is a high-quality replacement part made from durable ABS plastic, essential for effective home cleaning.

2. Installation Instructions
Follow these steps to replace the main roller brush in your compatible vacuum cleaner:
- Power Off: Ensure your vacuum cleaner is turned off and unplugged (if applicable) before beginning any maintenance.
- Access Brush Compartment: Turn the vacuum cleaner over and locate the main brush compartment cover. This cover is usually secured by latches or screws.
- Remove Old Brush: Unlatch or unscrew the cover and carefully remove the old roller brush. Note its orientation for correct installation of the new brush.
- Clean Compartment: While the compartment is open, clean any accumulated dust, debris, or tangled hair from the brush housing and bearings.
- Install New Brush: Insert the new main roller brush into the compartment, ensuring the ends align correctly with the brush bearings. The brush features a detachable head for easier maintenance and installation.
- Secure Cover: Replace the brush compartment cover and secure it with the latches or screws.
- Test: Turn on your vacuum cleaner to ensure the new brush rotates freely and operates correctly.

3. Operating the Brush
The main roller brush operates as an integral part of your vacuum cleaner's cleaning system. Once installed, it will rotate during cleaning cycles to agitate dirt and debris from surfaces, directing them into the vacuum's suction path. No specific user operation is required for the brush itself beyond its proper installation and maintenance.
4. Maintenance
Regular maintenance of the main roller brush is crucial for optimal cleaning performance and extending the lifespan of your vacuum cleaner. The brush is designed with a detachable head for easy cleaning.
- Frequency: Inspect the brush weekly, or more frequently if you have pets or long-haired occupants.
- Removal: Follow steps 1-3 from the "Installation Instructions" to remove the brush.
- Cleaning:
- Carefully remove any tangled hair, strings, or debris wrapped around the brush bristles and the main brush bearings. Scissors or a brush cleaning tool (often included with vacuum cleaners) can be helpful.
- Wipe down the brush and its end caps with a dry or slightly damp cloth. Do not submerge the brush in water.
- Reinstallation: Reinstall the cleaned brush by following steps 5-6 from the "Installation Instructions."

5. Troubleshooting
If you encounter issues related to the main roller brush, consider the following:
- Reduced Cleaning Performance:
- Check if the brush is tangled with hair or debris. Clean it thoroughly as per the Maintenance section.
- Ensure the brush is installed correctly and rotating freely.
- The brush bristles may be worn out. Consider replacing the brush if it's old and visibly damaged.
- Unusual Noises from Brush Area:
- Remove the brush and inspect for any foreign objects lodged in the brush or compartment.
- Check the brush bearings for damage or excessive wear.
- Ensure the brush is properly seated in its compartment.
- Brush Not Rotating:
- Verify that the vacuum cleaner is powered on and operating.
- Check for severe tangles or obstructions preventing rotation.
- Ensure the brush end caps are correctly installed and not hindering movement.
6. Specifications
| Feature | Detail |
|---|---|
| Product Type | Vacuum Cleaner Parts (BRUSHES) |
| Compatibility | ILIFE W400, ILIFE W455, Medion MD 18379, Medion MD 18999 |
| Material | ABS Plastic |
| Color | Light Blue |
| Length | 245 mm (approx. 9.65 inches) |
| Diameter | 35 mm (approx. 1.38 inches) |
| Package Weight | 0.3 kg (approx. 0.66 lbs) |
| Origin | Mainland China |

7. User Tips
- Regular Cleaning: To maintain peak cleaning efficiency, make it a habit to clean the roller brush after every few uses, especially if your household has pets.
- Check for Wear: Over time, the bristles of the brush may wear down. If you notice reduced cleaning effectiveness even after cleaning, it might be time for a replacement.
- Proper Storage: When not in use, store replacement brushes in a clean, dry place to prevent damage or deformation of the bristles.
8. Warranty and Support
As a replacement part, the warranty for this main roller brush is typically covered under the terms provided by the seller at the time of purchase. For any product-specific issues, defects, or questions regarding compatibility, please contact the seller directly through your purchase platform. Keep your order details handy when seeking support.
For issues related to the vacuum cleaner itself, please refer to the original manufacturer's manual and warranty information.





