1. Introduction
Thank you for choosing the Zerodis Replacement Main Brush. This product is designed to restore the cleaning efficiency of your compatible robot vacuum cleaner, specifically models like the Cecotec Conga 3490 and 4090. Regular replacement of the main brush is crucial for maintaining optimal performance, ensuring effective dirt, dust, and debris collection from various floor surfaces.

Image: Top view of the Zerodis Replacement Main Brush, showcasing its design and bristles.
2. Product Features
- Effective Cleaning: Designed to efficiently remove dirt, dust, and trash from corners and edges, including pet hair and human hair.
- Optimal Performance: Helps maintain your robot vacuum's best cleaning performance by ensuring consistent contact with the floor.
- Easy Installation: Features a user-friendly design that allows for quick and tool-free replacement as part of routine maintenance.
- Durable Construction: Made from high-strength, environmentally friendly Acrylonitrile Butadiene Styrene (ABS) material for long-lasting use.

Image: The Zerodis main brush in the foreground, with a robot vacuum cleaner operating on a hard floor in the background, illustrating its function in dirt removal.
3. Setup and Installation
Replacing the main brush is a simple process that does not require any special tools. Follow these steps to install your new Zerodis main brush:
- Turn off your robot vacuum cleaner and place it upside down on a clean, flat surface.
- Locate the main brush compartment, usually secured by a cover or latch.
- Open the compartment and carefully remove the old main brush. Note its orientation for correct installation of the new brush.
- Insert the new Zerodis main brush into the compartment, ensuring that its ends align correctly with the designated slots or bearings.
- Close the main brush compartment cover securely.
- Flip your robot vacuum back over and power it on.

Image: Detailed view of the ends of the Zerodis Main Brush, showing the connection points for easy installation into the vacuum cleaner.
4. Operating
Once installed, the Zerodis Replacement Main Brush operates automatically as part of your robot vacuum cleaner's normal cleaning cycle. The brush's design ensures optimal contact with various floor types, including hard floors, tiles, and carpets, to effectively sweep debris into the vacuum's suction path. No additional user intervention is required for the brush's operation after installation.

Image: The Zerodis Main Brush positioned next to a robot vacuum cleaner on a tiled floor, demonstrating its intended use and compatibility.
5. Maintenance
To ensure your robot vacuum continues to operate at its best, regular maintenance of the main brush is recommended. This includes:
- Regular Cleaning: Periodically remove the main brush and clean any tangled hair or debris from the bristles and ends. This prevents blockages and maintains effective sweeping.
- Replacement Frequency: It is recommended to replace the main brush every 2 to 3 months, depending on your usage frequency and the amount of debris collected. Timely replacement ensures consistent cleaning performance and prolongs the lifespan of your vacuum cleaner.
6. Troubleshooting
If you experience issues after replacing the main brush, consider the following:
- Brush Not Spinning: Ensure the brush is correctly installed and seated in its compartment. Check for any obstructions or tangled debris preventing rotation.
- Reduced Cleaning Performance: If the vacuum's cleaning performance is still poor after replacement, verify that the brush is clean and free of excessive wear. Ensure the vacuum's suction path is clear.
- Unusual Noises: A new brush should not cause unusual noises. Re-check installation to ensure no parts are misaligned or loose.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | Zerodis |
| Item Type | Main Brush |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Color | Blue |
| Length | Approx. 19cm / 7.5in |
| Weight | Approx. 50g / 1.8oz (1.76 ounces) |
| Compatibility | Cecotec Conga 3490, 4090, and compatible robot vacuums |
| Specific Uses | Floor, Kitchen |
| Surface Recommendation | Floor, Tile, Metal, Plastic, Carpet, Ceramic, Wood |

Image: Side view of the Zerodis Main Brush, indicating its approximate length of 19cm (7.5 inches).
8. Warranty and Support
For any questions or support regarding your Zerodis Replacement Main Brush, please refer to the seller's return policy or contact customer service through the platform where the purchase was made. Zerodis is committed to providing quality household products and customer satisfaction.