1. Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your BWT EV03CBX Rechargeable Pool Vacuum Kit. Please read this manual thoroughly before using the product and retain it for future reference.
The BWT EV03CBX is a cordless, portable cleaning device designed for maintaining spas and small pools. It features a rechargeable lithium battery for convenient operation and a filter system to capture fine debris.
2. Safety Information
WARNING: Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Read all instructions before using this appliance.
- Do not operate the vacuum when people are in the pool.
- Keep the charging port dry. Do not charge the vacuum near water or with wet hands.
- Use only the charger supplied by the manufacturer.
- Do not attempt to disassemble or repair the battery or motor unit. Contact qualified service personnel.
- Store the vacuum in a cool, dry place away from direct sunlight when not in use.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
3. Package Contents
Verify that all items listed below are present in your package. If any parts are missing or damaged, contact customer support.
- BWT EV03CBX Pool Vacuum Unit
- Filter Bag (0.3-liter capacity)
- Charging Cable (USB)
- Pole Sections (2 sections, total 36.6 inches)
- Vacuum Head with Wheels
- Brush Attachment

Image 1: Fully assembled BWT EV03CBX Rechargeable Pool Vacuum Kit.
4. Setup and Assembly
4.1 Charging the Battery
- Ensure the vacuum unit is dry before charging.
- Locate the charging port on the vacuum unit.
- Connect the provided USB charging cable to the vacuum unit and to a suitable USB power adapter (not included).
- Allow the vacuum to charge fully before first use. The charging indicator light will change color or turn off when charging is complete.

Image 2: USB charging cable.
4.2 Assembling the Pole
- Take the two pole sections.
- Connect the two sections by aligning the holes and pressing the spring clips. Ensure they lock securely.
- Attach the assembled pole to the vacuum unit. The pole is compatible with standard 1-1/4 inch attachments.

Image 3: Two pole sections for assembly.
4.3 Attaching the Vacuum Head or Brush
- Select either the vacuum head with wheels or the brush attachment based on your cleaning needs.
- Align the chosen attachment with the bottom of the vacuum unit and push firmly until it clicks into place.

Image 4: Brush attachment.
5. Operating Instructions
5.1 Starting the Vacuum
- Ensure the vacuum is fully charged.
- Submerge the vacuum unit completely in water. The non-return valve prevents water from flowing back out.
- Locate the power switch on the vacuum unit. Turn it ON. The motor will start, and the vacuum will begin to draw water and debris.
5.2 Cleaning the Pool/Spa
- Gently guide the vacuum head along the bottom and sides of your pool or spa.
- Move the vacuum slowly to allow sufficient time for debris to be collected.
- The vacuum is designed to operate effectively in water depths up to 2 meters.
- The lithium battery provides up to 30 minutes of continuous operation on a full charge.
5.3 Stopping the Vacuum
- Turn the power switch OFF.
- Carefully remove the vacuum from the water.
6. Maintenance
6.1 Cleaning the Filter Bag
It is recommended to clean the filter bag after each use or when suction power decreases.
- Ensure the vacuum is turned OFF and removed from water.
- Locate the click-lock opening system on the vacuum unit. Open it to access the filter compartment.
- Remove the filter bag.
- Empty any collected debris from the filter bag.
- Rinse the filter bag thoroughly with clean water until all debris is removed.
- Reinsert the clean filter bag into the vacuum unit and securely close the click-lock system.

Image 5: Vacuum body with visible filter compartment.
6.2 Storage
- After cleaning, ensure the vacuum unit and filter bag are completely dry before storage.
- Store the vacuum in a cool, dry place, away from direct sunlight and extreme temperatures.
- For long-term storage, it is recommended to charge the battery periodically to maintain its health.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vacuum does not turn on. | Battery is not charged. | Charge the battery fully. |
| Low suction power. | Filter bag is full or clogged. | Clean the filter bag. |
| Low suction power. | Debris is blocking the intake. | Inspect and clear any blockages from the vacuum head or intake port. |
| Vacuum stops unexpectedly. | Battery is depleted. | Recharge the battery. |
8. Specifications
- Model: EV03CBX
- Power Source: Rechargeable Lithium Battery
- Operating Time: Up to 30 minutes (fully charged)
- Filter Capacity: 0.3 Liters
- Maximum Operating Depth: 2 meters (6.5 feet)
- Pole Length: 36.6 inches (two sections)
- Pole Compatibility: Standard 1-1/4 inch attachments
- Product Dimensions: 6"L x 2"W x 10"H (vacuum unit only)
9. Warranty and Support
For warranty information or technical support, please refer to the warranty card included with your product or visit the official BWT website. Keep your proof of purchase for warranty claims.
Customer Support: For assistance, please contact BWT customer service through their official channels.