1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Bosch Flexxo ProAnimal 28Vmax Series 4 cordless 2-in-1 vacuum cleaner. Please read these instructions carefully before first use and keep them for future reference.
The Bosch Flexxo ProAnimal 28Vmax is a 2-in-1 cordless appliance designed for comprehensive home cleaning, including pet hair. It features an integrated LED light on the motorized brush for improved visibility during cleaning. The RobustAir system maintains consistent suction performance even as the dust container fills. Its versatile design includes a detachable handheld vacuum and a range of accessories for cleaning various surfaces from floors to ceilings, and even inside vehicles. The Lithium-Ion battery technology provides extended runtime and reduced charging time.
2. Safety Instructions
General Safety:
- Ensure the appliance is fully assembled before use.
- Do not vacuum liquids, sharp objects, or hot ashes.
- Keep hair, loose clothing, fingers, and all parts of the body away from openings and moving parts.
- Use only original Bosch accessories and spare parts.
- Do not operate the vacuum cleaner if it is damaged. Contact customer service.
- This appliance is not intended for use by persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.
Battery Safety:
- Use only the charger supplied with the appliance.
- Do not expose the battery to high temperatures or direct sunlight.
- Do not short-circuit the battery.
- If the battery is damaged, do not attempt to repair it. Contact customer service.
3. Product Overview
The Bosch Flexxo ProAnimal 28Vmax is a versatile cleaning tool. Key components include:
- Main Unit: Contains the motor, dust container, and battery.
- Handheld Vacuum: Integrated into the main unit, detachable for smaller tasks.
- Motorized Floor Brush: Equipped with LED lighting for improved visibility and a removable roller for easy cleaning.
- Accessory Kit: Includes an XL crevice tool, a 2-in-1 upholstery nozzle, and a small brush for furniture. Accessories are stored within the handle.

Figure 3.1: Bosch Flexxo ProAnimal 28Vmax in upright mode.

Figure 3.2: The vacuum cleaner's self-standing capability.

Figure 3.3: Motorized floor brush with LED lighting.
4. Setup
Assembly:
- Unpack all components and ensure no parts are missing.
- Insert the main handle into the vacuum body until it clicks securely into place.
- Attach the motorized floor brush to the bottom of the main unit.
Initial Charging:
Before first use, fully charge the vacuum cleaner. The initial charge takes approximately 5 hours.
- Connect the charger to the charging port on the vacuum cleaner.
- Plug the charger into a power outlet.
- The battery indicator light will show charging status.

Figure 4.1: Charging the vacuum cleaner.
5. Operating Instructions
Using as a Stick Vacuum:
- Ensure the handheld unit is securely docked in the main body.
- Press the power button to turn on the vacuum cleaner.
- Select the desired power level (2 speeds available) using the switch on the handle.
- Guide the vacuum cleaner over the surface to be cleaned. The LED lights on the brush head will illuminate the cleaning path.

Figure 5.1: Power switch and battery indicator.
Using as a Handheld Vacuum:
- Press the release button to detach the handheld unit from the main body.
- Attach the appropriate accessory (e.g., crevice tool for tight spaces, upholstery nozzle for furniture).
- Press the power button on the handheld unit to start vacuuming.

Figure 5.2: Using the handheld vacuum in a car.

Figure 5.3: Cleaning a drawer with the handheld vacuum and crevice tool.

Figure 5.4: Cleaning a pet bed with the handheld vacuum.

Figure 5.5: Cleaning a sofa with the handheld vacuum.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your vacuum cleaner.
Emptying the Dust Container:
- Empty the dust container regularly, especially when it reaches the MAX fill line.
- Detach the handheld unit.
- Open the dust container lid and dispose of the contents.
- Close the lid securely.
Cleaning the Filter:
- The vacuum features a triple filtration system with washable filters.
- Remove the filter unit from the dust container.
- Tap out loose dust. If heavily soiled, rinse the filter under running water.
- Allow the filter to air dry completely for at least 24 hours before reinserting. Do not use heat to dry.
Cleaning the Brush Roller:
- The brush roller can be easily removed for cleaning.
- Locate the release mechanism on the side of the floor brush.
- Pull out the brush roller.
- Remove any tangled hair or debris from the roller using scissors if necessary.
- Reinsert the brush roller until it clicks into place.

Figure 6.1: Removing the brush roller for cleaning.

Figure 6.2: Detailed view of brush roller removal.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not turn on. | Battery is discharged. | Charge the battery for at least 5 hours. |
| Reduced suction power. | Dust container is full. Filter is clogged. Brush roller is tangled. | Empty the dust container. Clean or wash the filter. Remove tangled hair/debris from the brush roller. |
| Vacuum stops during operation. | Battery is depleted. Overheating protection activated. | Recharge the battery. Turn off the vacuum and allow it to cool down for 30 minutes before resuming use. |
| LED lights on brush head not working. | Connection issue or damage. | Check brush head connection. If problem persists, contact customer service. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Bosch |
| Model Number | BBH3ZOO28 |
| Color | Red |
| Dimensions (L x W x H) | 26.5 x 18 x 115 cm |
| Weight | 3.8 Kilograms |
| Power | 25.2 Watts |
| Voltage | 28 Volts |
| Number of Speeds | 2 |
| Noise Level | 82 Decibels |
| Runtime | Up to 55 minutes |
| Charging Time | Approx. 5 hours |
| Special Features | Integrated accessories, Handheld vacuum, ProAnimal Brush, Easy storage, LED brush lighting |
| Filter Type | HEPA Filter (Triple filtration, washable) |
| Power Source | Battery Powered (7 Lithium-ion cells included) |
9. Warranty and Support
For warranty information and customer support, please refer to the official Bosch website or contact your local Bosch service center. Keep your purchase receipt as proof of purchase.
Spare parts availability: 7 Years.
For further assistance, visit the Bosch Store.





