1. Introduction
This manual provides essential instructions for the safe and effective use, maintenance, and troubleshooting of your Sagola 3300 GTO Gravity Spray Gun with a 1.60mm HVLP Air Cap. This spray gun is engineered for precise application of sanding surfacers and various coatings in automotive, timber, and plastic sectors, ensuring even material distribution and high transfer efficiency.
2. Key Features
- HVLP Air Cap: Designed for high volume, low pressure application, consuming 360 liters per minute of air.
- Gravity Fed Design: Equipped with an anti-drip plug and a device for collecting drained product, includes a paint cup.
- Versatile Application: Suitable for various painting industries including automotive, timber, and plastic sectors.
- Interchangeable Components: Needle nozzles and tips are interchangeable, allowing for customization to suit specific painting needs.
- Durable Construction: Built for demanding industrial use with easy component replacement in mind.
- Adjustable Pressure: Features an internal flow regulator at the bottom of the gun for precise pressure adjustments.
3. Product Overview
Figure 1: Sagola 3300 GTO Gravity Spray Gun and included accessories.
Figure 2: The Sagola 3300 GTO is suitable for a wide range of applications including woodworking, automotive, industrial coatings, and aviation.
Figure 3: Cross-section view illustrating the internal components and fluid path of the spray gun.
Figure 4: Detailed view of the GTO HVLP air cap, designed for efficient material transfer.
4. Setup
- Unpack and Inspect: Carefully remove all components from the packaging. Inspect the spray gun and accessories for any signs of damage.
- Assemble Components: Attach the paint cup to the top of the spray gun. Ensure it is securely fastened to prevent leaks.
- Connect Air Supply: Connect a clean, regulated air supply line to the air inlet at the bottom of the spray gun handle. Ensure the air pressure regulator is set to the recommended operating pressure (refer to specifications).
- Initial Cleaning: Before first use, flush the spray gun with an appropriate cleaning solvent to remove any manufacturing residues.
- Install Nozzle and Needle: Ensure the correct 1.60mm nozzle and needle are installed for your application. Sagola's interchangeable design allows for various setups.
5. Operating Instructions
5.1. Adjustments
- Air Pressure: Adjust the air pressure using the internal flow regulator located at the bottom of the gun. Start with the recommended pressure for HVLP (typically around 1.8 bar / 26 psi at the gun inlet) and fine-tune as needed for optimal atomization.
- Fluid Control: The fluid control knob (usually at the back of the gun) regulates the amount of material flowing through the nozzle. Turn clockwise to decrease fluid, counter-clockwise to increase.
- Fan Pattern Control: The fan pattern control knob (often on the side of the air cap) adjusts the shape of the spray pattern from round to wide fan.
5.2. Spraying Technique
- Test Spray: Always perform a test spray on a scrap piece of material to verify settings and spray pattern before applying to your workpiece.
- Distance: Maintain a consistent distance from the workpiece, typically 6-8 inches (15-20 cm) for HVLP guns.
- Movement: Use smooth, even strokes, moving your entire arm, not just your wrist. Overlap each pass by about 50% to ensure even coverage.
- Trigger Control: Fully depress the trigger at the beginning of each pass and release at the end. Avoid feathering the trigger.
6. Maintenance
6.1. Cleaning After Each Use
- Empty Paint Cup: Remove any remaining material from the paint cup.
- Flush Gun: Fill the cup with appropriate cleaning solvent and spray it through the gun until it runs clear.
- Disassemble: Carefully disassemble the air cap, fluid nozzle, and fluid needle.
- Clean Components: Clean all disassembled parts thoroughly with solvent and a cleaning brush. Pay close attention to the air cap holes and fluid nozzle opening. Note: The Sagola 3300 GTO is designed without plastic or rubber components in the product area, simplifying cleaning.
- Reassemble: Lubricate the fluid needle packing and air cap threads with a small amount of gun lubricant before reassembly.
6.2. Storage
Store the clean and dry spray gun in a protective case or hang it in a clean, dry environment to prevent damage and contamination.
6.3. Part Replacement
The Sagola 3300 GTO features interchangeable needle nozzles and tips. Regularly inspect these components for wear and replace them as needed to maintain optimal spray performance. Use only genuine Sagola replacement parts.
7. Troubleshooting
Below are common issues and potential solutions:
- Uneven Spray Pattern:
- Check for clogged air cap holes or fluid nozzle. Clean thoroughly.
- Ensure air cap is properly aligned and tightened.
- Verify consistent air pressure.
- Paint Spitting or Pulsating:
- Check for loose fluid nozzle or air cap.
- Ensure fluid needle packing is not too tight or worn.
- Verify sufficient material in the paint cup.
- Poor Atomization:
- Increase air pressure gradually.
- Thin material if it is too viscous (follow material manufacturer's recommendations).
- Check for correct nozzle size for the material being sprayed.
- Leaks:
- Tighten all connections (paint cup, air hose).
- Inspect O-rings and gaskets for wear and replace if necessary.
8. Specifications
- Brand:
- Sagola
- Model Name:
- GTO
- Item Model Number:
- PG101415--
- Style:
- HVLP Air Cap
- Nozzle Size (Current Model):
- 1.60mm
- Tank Volume:
- 650 Cubic Centimeters
- Material:
- Aluminum, Stainless Steel
- Power Source:
- Corded Electric (Air Compressor Driven)
- Item Weight:
- 2.1 pounds
- Included Components:
- Spray Gun
- Special Features:
- Metal Parts
- HVLP Air Cap Air Consumption:
- 360 L/min
- HVLP Air Cap Max Inlet Pressure:
- 1.8 Bar
9. Air Cap Information
The Sagola 3300 GTO series offers various air caps and nozzle sizes to optimize performance for different materials and applications. Below are tables detailing air consumption, pressure, and recommended uses for various air caps.
Figure 5: Air Consumption and Pressure for Sagola GTO Air Caps. Note the maximum inlet pressure for HVLP nozzles.
Figure 6: Recommended Applications for Sagola GTO Air Caps and Nozzle Sizes.
10. Manufacturing Process
Sagola products are manufactured with precision and quality. The following video provides insight into the manufacturing process of Sagola spray guns.
Video 1: Sagola's Manufacturing Process. This video showcases the precision engineering and quality control involved in producing Sagola spray guns.
11. What's in the Box
The Sagola 3300 GTO Gravity Spray Gun package includes:
- Sagola 3300 GTO Spray Gun (with 1.60mm HVLP Air Cap)
- Paint Cup
12. Warranty and Support
For warranty information, technical support, or to purchase replacement parts, please contact Sagola customer service or visit the official Sagola website. Ensure you have your product model number (PG101415--) and purchase details available when seeking support.
