Introduction
Thank you for choosing the REXBETI Ultimate-750 Paint Sprayer. This 500 Watt High Power HVLP Electric Spray Gun is designed for home use, offering ease of spraying and cleaning, making it perfect for beginners. This manual provides essential information for safe operation, optimal performance, and proper maintenance of your paint sprayer. Please read it thoroughly before first use.

Image: REXBETI Ultimate-750 Paint Sprayer being used to paint a chair, demonstrating its ease of use for various projects.
Important Safety Instructions
Always wear appropriate safety gear, including gloves, goggles, and a respirator. Avoid inhaling spray mist. Use in a well-ventilated area. Keep away from heat sources and open flames. Do not point the spray gun at people or animals. Clean the spray gun immediately after use. Dispose of paint and cleaning materials responsibly. Always follow the manufacturer's instructions for safe operation and maintenance.
Package Contents
Please check the package to ensure all items are present and undamaged:
- REXBETI Ultimate-750 Paint Sprayer Unit (Motor and Spray Head)
- Paint Container (1000 Cubic Centimeters)
- Viscosity Measuring Cup
- Cleaning Brush
- Cleaning Needle
- Nozzles: Three additional nozzles (1.5mm, 2.0mm, 2.5mm, 3.0mm) are included, with one already installed on the sprayer, totaling four nozzles.
- Spare Air Filter
- Wrench for nozzle removal
- User Manual

Image: The REXBETI Ultimate-750 Paint Sprayer disassembled, showing the motor unit, spray head, paint container, and all accessories including nozzles, cleaning tools, and viscosity cup.
Components Overview
Familiarize yourself with the main components of your REXBETI paint sprayer:
- Motor Unit: The main body housing the 500 Watt electric motor.
- Spray Head: Attaches to the motor unit and holds the nozzle and paint container.
- Paint Container: A 1000cc capacity container for holding paint or other sprayable liquids.
- Nozzle: Interchangeable parts that determine the spray pattern and flow.
- Flow Control Knob: Located on the trigger, this knob adjusts the paint flow rate.
- Air Cap: The outer ring of the nozzle assembly, adjustable for different spray patterns.

Image: A detailed view of the spray head, illustrating the three adjustable spray patterns (circular, horizontal, vertical) and the location of the flow control knob.
Setup
- Assembly:
- Attach the spray head to the motor unit by aligning the components and twisting until securely locked.
- Screw the paint container firmly onto the bottom of the spray head.
- Paint Preparation:
- Thinning: Many paints, especially latex and chalk-type, may need thinning to achieve the correct viscosity for spraying. Use the included viscosity measuring cup. Fill the cup with your paint and time how long it takes for the paint to flow out. Refer to the paint manufacturer's recommendations or the nozzle recommendations chart for ideal flow times. Add appropriate thinner (e.g., water for latex, mineral spirits for oil-based) gradually and mix thoroughly until the desired viscosity is reached.
- Straining: Always strain your paint through a paint filter (not included, but recommended) before pouring it into the paint container. This prevents clogs and ensures a smooth spray.
- Nozzle Selection:
Select the appropriate nozzle size based on the material you are spraying and the desired finish. The sprayer comes with 1.5mm, 2.0mm, 2.5mm, and 3.0mm nozzles.

Image: A table detailing nozzle recommendations (1.5mm, 2.0mm, 2.5mm, 3.0mm) for various materials like sealers, stains, polyurethane, chalk paint, milk paint, low viscosity primer, and latex wall paint, along with recommended viscosity in Din-s and suitable projects.
Operating Instructions
- Adjust Spray Pattern:
Rotate the air cap to select one of three spray patterns:
- Circular (45°): For small areas or detailed work.
- Horizontal (90°): For vertical surfaces.
- Vertical (180°): For horizontal surfaces.

Image: A detailed view of the spray head, illustrating the three adjustable spray patterns (circular, horizontal, vertical) and the location of the flow control knob.
- Adjust Flow Control:
Turn the flow control knob located above the trigger to increase or decrease the material flow. Start with a lower setting and gradually increase until you achieve the desired coverage.
- Spraying Technique:
- Hold the sprayer approximately 6-12 inches from the surface, keeping it perpendicular to the surface.
- Move the sprayer in smooth, even strokes, overlapping each pass by about 50%.
- Release the trigger at the end of each stroke to avoid paint buildup.
- Always perform a test spray on a piece of scrap material to adjust settings before applying to your main project.

Image: A person using the REXBETI Ultimate-750 Paint Sprayer to apply pink paint to a wooden chair, demonstrating a typical application scenario.
Maintenance
Proper cleaning and maintenance are crucial for the longevity and performance of your paint sprayer.
- Immediate Cleaning After Use:
- Empty any remaining paint from the container.
- Pour a small amount of appropriate cleaning solution (water for water-based paints, mineral spirits for oil-based) into the container.
- Spray the cleaning solution through the gun until it runs clear.
- Unplug the sprayer and disassemble the spray head, nozzle, and paint container.
- Thoroughly clean all parts with the cleaning brush and needle, ensuring no paint residue remains. Pay special attention to the nozzle and air cap.
- Wipe down the exterior of the motor unit with a damp cloth. Do not immerse the motor unit in liquid.
- Allow all parts to dry completely before reassembling or storing.
- Air Filter Maintenance:
- Regularly check the air filter for clogs or damage.
- Replace the air filter if it appears dirty or worn to maintain optimal airflow and prevent motor damage.
- Storage:
- Store the clean and dry paint sprayer in a cool, dry place, away from direct sunlight and extreme temperatures.
- Keep out of reach of children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Spray or Weak Spray | Nozzle clogged, paint too thick, air filter dirty, suction tube blocked. | Clean nozzle and air cap. Thin paint to correct viscosity. Clean or replace air filter. Clear suction tube. |
| Uneven Spray Pattern | Nozzle partially clogged, air cap not aligned correctly, paint viscosity incorrect. | Clean nozzle and air cap. Adjust air cap for desired pattern. Adjust paint viscosity. |
| Paint Spitting or Dripping | Nozzle loose, paint too thin, air cap dirty, worn seals. | Tighten nozzle. Adjust paint viscosity (thicken if necessary). Clean air cap. Check and replace seals if worn. |
| Motor Overheating | Blocked air vents, prolonged continuous use. | Ensure air vents are clear. Allow sprayer to cool down between uses. |
Specifications
- Brand: REXBETI
- Model Number: 5864270686
- Power Source: Electric (500 Watt High Power HVLP)
- Tank Volume: 1000 Cubic Centimeters
- Color: Black and Orange
- Material: Plastic
- Nozzle Sizes: 1.5mm, 2.0mm, 2.5mm, 3.0mm
- Spray Patterns: Adjustable (Circular, Horizontal, Vertical)
- Hose Length: 6.6 Feet (Power Cord)
- Product Dimensions: 11.8 x 5.5 x 11.4 inches
- Item Weight: 3.6 pounds
- UPC: 646690217467
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official REXBETI website. Keep your purchase receipt as proof of purchase for any warranty claims.
