Graco 221621 Reversible Airless Spray Tip, RAC IV, 621 User Manual

Introduction

This manual provides instructions for the Graco 221621 Reversible Airless Spray Tip, RAC IV, 621. This tip is designed for use with airless sprayers to apply various coatings, from lacquers to exterior paints. The reversible design facilitates clearing clogs during operation.

Product Features

• Spray Pattern: Provides a 12-14 inch spray pattern, suitable for larger surfaces such as exterior homes, buildings, decks, or interior walls.
• Tip Size: Features a .021 inch orifice, optimized for spraying thicker materials like interior/exterior latex or primers.
• Reverse-A-Clean Feature: Allows for quick clearing of tip clogs by twisting the tip and spraying in the reverse position.
• Installation: Designed for easy, tool-free installation on compatible spray guns.
• Compatibility: Intended for use with a RAC IV Tip Guard (sold separately).
• Components: Includes one spray tip and one tip seal.

Setup

Before installing the spray tip, ensure your airless sprayer is depressurized and disconnected from power.

1. Consult Sprayer Manual: Refer to your specific sprayer's instruction manual to determine the maximum tip size it can support and for detailed safety procedures.
2. Install Tip Guard: If not already installed, attach a compatible RAC IV Tip Guard to your spray gun.
3. Insert Tip: Insert the Graco 221621 Reversible Airless Spray Tip into the tip guard. The tip is designed for easy, tool-free installation.
4. Secure Tip: Ensure the tip is securely seated within the guard.

Figure 1: Graco 221621 Reversible Airless Spray Tip. This image displays the black plastic housing with markings 'D04G' and '221', connected to a silver metal component. This assembly is crucial for controlling the spray pattern and material flow during operation.

Operating Instructions

Once the tip is installed and the sprayer is prepared according to its manual, you can begin operation.

• Spray Application: Hold the spray gun at a consistent distance from the surface, typically 10-12 inches, and move it smoothly to achieve an even coating. The 12-14 inch spray pattern is designed for efficient coverage of large areas.
• Material Compatibility: The .021 inch orifice is suitable for applying thicker materials such as latex paints and primers. Adjust sprayer pressure as needed for optimal atomization and finish.

Maintenance

Proper maintenance of your spray tip ensures consistent performance and extends its lifespan.

• Cleaning During Use (Reverse-A-Clean): If the spray pattern becomes inconsistent or stops due to a clog, twist the tip 180 degrees to the reverse position. Briefly spray to clear the obstruction, then twist it back to the forward spray position to resume work.
• Post-Use Cleaning: After each use, thoroughly clean the spray tip with appropriate cleaning solutions for the material sprayed (e.g., water for latex, solvent for oil-based paints). Remove the tip from the gun and clean both the tip and the tip guard separately. Ensure all paint residue is removed from the orifice and internal channels.
• Storage: Store the clean, dry tip in a protective fluid or tip saver to prevent drying and corrosion.

Troubleshooting

Common issues encountered with spray tips and their solutions.

• Clogged Tip: If the spray pattern becomes inconsistent or stops, the tip may be clogged. Utilize the Reverse-A-Clean feature by twisting the tip 180 degrees and spraying briefly to clear the obstruction. If the clog persists, remove the tip and clean it manually.
• Poor Spray Pattern: An uneven or "tailed" spray pattern can indicate a worn tip or incorrect pressure settings. Check the tip for wear; if worn, replace it. Adjust the sprayer pressure according to the material being used and the manufacturer's recommendations.
• Leaking: Ensure the tip and tip seal are correctly installed and not damaged. Replace the tip seal if it shows signs of wear.

Specifications

Warranty and Support

The Graco 221621 Reversible Airless Spray Tip comes with a 1-year limited warranty. For warranty claims or additional support, please contact Graco customer service or refer to the official documentation.

A comprehensive user manual in PDF format is available for download: Download User Manual (PDF)