Introduction
The Cecotec Conga Serie 4090 is an advanced robot vacuum cleaner designed to provide comprehensive floor cleaning. Equipped with 4-in-1 technology, it can sweep, vacuum, mop, and scrub simultaneously. Its iTech Laser 360 navigation system ensures efficient mapping and optimal cleaning routes. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to help you get the most out of your device.
Safety Instructions
Please read these safety instructions carefully before using the appliance and keep them for future reference. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ensure the power voltage matches the voltage indicated on the appliance's rating label.
- Do not immerse the appliance, power cord, or plug in water or any other liquid.
- Keep the robot away from children and pets during operation.
- Do not use the robot on wet surfaces or in areas with standing water.
- Avoid operating the robot near open flames or heat sources.
- Regularly check the power cord for damage. If damaged, it must be replaced by the manufacturer or a qualified service agent.
- Unplug the robot from the power outlet before cleaning or performing any maintenance.
- Do not use the robot to pick up large debris, sharp objects, or liquids.
- Ensure all cables, curtains, and fragile items are cleared from the cleaning path to prevent entanglement or damage.
Product Overview
Familiarize yourself with the main components of your Conga Serie 4090 robot vacuum cleaner.

Figure 1: Top view of the Cecotec Conga Serie 4090 robot vacuum cleaner, showing the main unit, a roller brush, a remote control, and a smartphone displaying the companion app. This image illustrates the primary components included with the device, highlighting its smart features and accessories.
Main Components:
- Robot Main Unit: Contains the motor, dustbin, water tank, sensors, and control buttons.
- Charging Base: For automatic recharging of the robot.
- Power Adapter: Connects the charging base to a power outlet.
- Side Brushes: Two brushes that sweep debris into the main brush path.
- Main Brush: Central brush for deep cleaning.
- Dustbin: Collects dry debris.
- Mixed Tank (Water Tank & Dustbin): For combined vacuuming and mopping.
- Mopping Cloths: Attachable cloths for wet cleaning.
- High-Efficiency Filter (HEPA): Filters fine dust particles.
- Remote Control: For manual control and setting cleaning modes.
- Cleaning Tool: For maintaining the brushes and filters.
Setup
1. Charging the Robot:
- Place the charging base against a wall in an open area, ensuring there are no obstacles within 1 meter to the sides and 2 meters in front.
- Connect the power adapter to the charging base and plug it into a power outlet.
- Place the robot on the charging base, ensuring the charging contacts align. The robot will emit a sound and the indicator light will show charging status.
- Allow the robot to fully charge before first use (approximately 3-4 hours).
2. App Installation and Connection:
The Conga 4090 can be controlled via the Cecotec app, compatible with 5GHz Wi-Fi networks.
- Download the "Cecotec Conga" app from your smartphone's app store (Google Play Store or Apple App Store).
- Register an account and log in.
- Ensure your smartphone is connected to a 5GHz Wi-Fi network.
- Follow the in-app instructions to add your Conga 4090 robot. This typically involves pressing and holding a button on the robot to enter pairing mode.
- Once connected, the app will guide you through the initial mapping process.

Figure 2: A user interacting with the Cecotec Conga app on a smartphone, demonstrating the ease of controlling and managing the robot vacuum's functions and cleaning plans from a mobile device.
3. Initial Mapping (iTech Laser 360):
The robot uses iTech Laser 360 navigation to create an accurate map of your home.
- For the first cleaning cycle, allow the robot to clean your entire home without interruption. This helps it create a complete and accurate map.
- Ensure all doors are open to areas you wish to be mapped.
- Once the map is created, you can view and edit it in the app using the Room Plan feature.

Figure 3: A smartphone display illustrating the Room Plan feature within the Cecotec Conga app. The screen shows a mapped floor plan with glowing, editable sections, demonstrating the robot's ability to memorize and allow management of multiple maps and customized cleaning plans.
Operating
Cleaning Modes:
The Conga 4090 offers 10 intelligent cleaning modes and 3 electronic mopping modes.

Figure 4: A visual representation of the ten distinct cleaning modes available on the Cecotec Conga 4090. These icons depict various cleaning patterns and functionalities, including Auto, Edges, Spiral, Manual, Return to Home, Twice, Scrubbing, Spot, Restricted Area, and Smart Area, showcasing the robot's versatile cleaning capabilities.
- Auto: Standard cleaning mode for general daily cleaning.
- Edges: Cleans along walls and furniture edges.
- Spiral: Cleans a concentrated area in a spiral pattern.
- Manual: Control the robot's movement using the app or remote control.
- Return to Home: Robot returns to the charging base.
- Twice: Cleans the area twice for thorough cleaning.
- Scrubbing: Specific mopping mode for deeper wet cleaning.
- Spot: Cleans a specific dirty spot.
- Restricted Area: Define areas the robot should avoid in the app.
- Smart Area: Define specific areas for targeted cleaning.
Using the 4-in-1 Functionality:
The Conga 4090 can sweep, vacuum, mop, and scrub simultaneously thanks to its mixed tank.
- Vacuuming/Sweeping: Ensure the dustbin or mixed tank is properly installed. The robot will automatically sweep and vacuum.
- Mopping/Scrubbing: Fill the mixed tank with clean water (and a small amount of neutral floor cleaner if desired). Attach the mopping cloth. Select a mopping mode via the app or remote control. The electronic control allows for precise water flow.

Figure 5: The Cecotec Conga robot vacuum cleaner operating under furniture, demonstrating its iTech Laser 360 navigation system. The blue grid lines illustrate the robot's precise mapping and obstacle avoidance capabilities as it cleans.
Voice Assistant Integration:
Control your Conga 4090 using voice commands with Alexa and Google Assistant.
- Enable the "Cecotec Conga" skill/action in your Alexa or Google Home app.
- Link your Cecotec account.
- Use commands such as "Alexa, tell Conga to start cleaning" or "Hey Google, ask Conga to go home."
Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your robot vacuum.
1. Emptying and Cleaning the Dustbin:
- Press the dustbin release button and remove the dustbin.
- Open the dustbin lid and empty its contents into a trash can.
- Clean the dustbin with a dry cloth. The dustbin can be rinsed with water, but ensure it is completely dry before re-installing.
2. Cleaning the High-Efficiency Filter (HEPA):
- Remove the HEPA filter from the dustbin.
- Tap the filter gently to remove dust. Do not wash the HEPA filter with water.
- Replace the HEPA filter every 3-6 months, depending on usage.
3. Cleaning the Main Brush and Side Brushes:
- Remove the main brush cover and lift out the main brush.
- Use the provided cleaning tool to remove hair and debris tangled around the brush.
- Pull off the side brushes and remove any hair or debris. Reattach them securely.
4. Cleaning the Mixed Tank and Mopping Cloth:
- Empty any remaining water from the mixed tank.
- Rinse the tank with clean water and allow it to air dry completely.
- Remove the mopping cloth and wash it by hand or machine. Allow it to air dry.
5. Cleaning Sensors and Charging Contacts:
- Wipe the cliff sensors (located on the bottom of the robot) and the charging contacts (on the robot and charging base) with a clean, dry cloth.
- Ensure the laser sensor on top of the robot is free from dust.
Troubleshooting
If you encounter issues with your Conga Serie 4090, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Robot does not turn on. | Low battery; Power button not pressed. | Place robot on charging base; Press and hold power button. |
| Robot does not charge. | Charging contacts dirty; Power adapter not connected. | Clean charging contacts; Ensure power adapter is securely plugged in. |
| Robot gets stuck frequently. | Obstacles; Cliff sensors dirty. | Clear cables and small objects; Clean cliff sensors. |
| Poor cleaning performance. | Full dustbin; Clogged filters/brushes. | Empty dustbin; Clean/replace filters and brushes. |
| App connection issues. | Incorrect Wi-Fi password; Robot not in pairing mode. | Verify Wi-Fi password; Reset robot and re-enter pairing mode. Ensure 5GHz Wi-Fi. |
| Robot makes unusual noise. | Debris in brushes; Loose parts. | Clean main and side brushes; Check for any loose components. |
Specifications
Technical specifications for the Cecotec Conga Serie 4090 Robot Vacuum Cleaner.
| Brand | Cecotec |
| Model Number | 4090 |
| Color | Multicolor |
| Dimensions (L x W x H) | 15 x 45 x 63 cm |
| Weight | 7.74 kg |
| Power | 14.8 watts |
| Noise Level | 64 dB |
| Material | Laser Technology |
| Compatible Devices | Google Home, Alexa |
| Special Features | Wireless, 4-in-1 (Sweep, Vacuum, Mop, Scrub), iTech Laser 360 Navigation, App Control, Room Plan, Restricted Areas, Wi-Fi 5GHz compatible |
| Filter Type | HEPA |
| Battery Life | 100 Minutes |
Warranty and Support
Your Cecotec Conga Serie 4090 robot vacuum cleaner comes with a standard manufacturer's warranty. Please refer to the warranty card included in the product packaging for specific terms and conditions.
For technical support, spare parts, or warranty claims, please contact Cecotec customer service through their official website or the contact information provided in your product documentation.
Note: Keep your purchase receipt as proof of purchase for warranty purposes.





