Graco 309550U Theory of Operation, Gun Triggered Fluid Spraying, Gun Detriggered Air Purging

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Theory of Operation

Gun Triggered (Fluid Spraying)

Mix chamber (19) moves back, shutting off purge air flow. Impingement ports (IP) align with fluid ports of side seals (18c), allowing fluid to flow through mix chamber nozzle (N).

See page 13 to adjust cleanoff air valve (K).

KEY

Purge Air

Fluid

Cleanoff Air

Grease

TI3547a

Flow paths are not shown to scale, for clarity.

18c

Troubleshooting

Gun Detriggered (Air Purging)

Mix chamber (19) moves forward, shutting off fluid flow. Impingement ports (IP) open to air chamber (AC), allow- ing purge air to flow through mix chamber nozzle (N).

See page 14 for use of grease fitting (G).

KEY

Purge Air

Fluid

Cleanoff Air

Grease

TI3547a

Flow paths are not shown to scale, for clarity.

19AC

N TI3546a

TI3545a

309550U

Image 25

Contents Plural Component, Impingement Mix Air Purge Spray Gun Manual Conventions ContentsRound Pattern Guns List of Models/Mix Chamber Selection GuideFlat Pattern Guns No., Series In. mm Flat Pattern Stud Wall GunIn. mm 1000 psi MPa, 70 bar 249525 249526Wide Round Pattern Gun Spatter Pattern GunFour-Hose Gun Non 11 Ratio GunsPersonal Protective Equipment Fire and Explosion Hazard Key Overall ViewIsocyanate Hazard Piston Safety LockKeep a and B Components Separate GroundingTurning Air Cap Follow Pressure Relief Procedure,Loss of Air Pressure Resin ISO SetupTI2413A Shutdown Pressure Relief Procedure Optional Fluid Manifold Position Optional ConfigurationsRemove Front End, Attach Front End,Optional Hose Position Follow Pressure Relief Procedure, page 15. AlsoFlat Spray Tips Maintenance Clean Air Cap Clean Outside of GunClean Muffler Clean Fluid ManifoldClean Passages Clean Mix Chamber NozzleClean Impingement Ports Nozzle Drill Bit SizesCbip Impingement Port Drill Bit SizesProblem Cause Solution TroubleshootingProblem Cause Solution Gun Triggered Fluid Spraying Theory of OperationGun Detriggered Air Purging Cutaway View Tools Required RepairLubrication Remove Front EndX Z Attach Front End18 B Mix Chamber and Side Seal Cartridges18c 18b 18d Check Valves Piston Air Valve Piston Safety LockCheck Valve 26 Detail PartsRound Pattern Guns, Part No. Description QtySee Flat Pattern Guns, See Supplied Tools,Detail Views Round Pattern Guns Mix Chamber KitsFlat Pattern Guns Mix Chamber Part No. Reference GuideGun Repair Kits Flat Tip KitsCheck Valve Filter Screen Kits Flat Tip Part No. Reference GuideKit Part No Qty in Kit Drill Bit Size Illustration Nominal Drill Bit Kits248969 Air Purge Handle Cleanout Drill KitWide Pattern Mix Chamber Kits AccessoriesStainless Steel Side Seal Kits Polycarballoy Side Seal KitsExtension Tip Seal Kits Extension Tip KitsExtension Tip Air Cap Kit Flat Pattern Stud Wall KitPour Nozzle Kit Spatter Conversion KitFlushing Manifold Solvent Flush Canister KitCirculation Manifold Tip Cleanout Tool15D234 246362Air Flow Data in scfm m3/min Technical DataCategory Data Graco Information Graco Standard WarrantyToll Free

309550U specifications

The Graco 309550U is a top-of-the-line airless paint sprayer that caters to both professionals and DIY enthusiasts. With its advanced features and user-friendly design, it stands out as an essential tool for achieving a flawless finish on various painting projects.

One of the main characteristics of the Graco 309550U is its powerful motor, which delivers a high level of pressure, making it suitable for a wide range of coatings. This airless sprayer can handle everything from thin paints to thicker latex and enamels without clogging, ensuring smooth and consistent application. The unit is designed to cover large areas quickly, allowing users to complete their projects in a fraction of the time compared to traditional roller or brush methods.

Equipped with Graco's exclusive ProXChange pump technology, the 309550U allows for easy pump replacement on the job site without the need for tools. This feature enhances productivity by minimizing downtime, enabling users to keep working seamlessly. The unit also boasts an innovative suction tube that can draw paint directly from the can, eliminating the need for cumbersome pouring and mess.

Another noteworthy feature is the adjustable pressure control, which allows users to customize the spray pattern and flow rate. This adaptability ensures optimal coverage in various environments and surfaces, whether applying a fine mist for intricate details or a heavier coat for larger surfaces. The built-in filter system further enhances performance by preventing debris from entering the spray mechanism, ensuring a smooth, even finish.

The Graco 309550U is designed with portability in mind. It features a lightweight frame and durable wheels, making it easy to transport across job sites or around the house. Additionally, the sprayer comes with a convenient carry handle for added mobility. Safety features, including a trigger lock, are also implemented to prevent accidental activation, giving users peace of mind during operation.

In conclusion, the Graco 309550U airless paint sprayer is a versatile and efficient tool that combines powerful performance with user-friendly features. Its robust design, ease of use, and innovative technologies make it an ideal choice for both professional painters and homeowners looking to achieve exceptional results in their painting endeavors. Whether you're tackling an interior room, exterior surface, or detailed trim work, the Graco 309550U ensures a flawless finish every time.