Graco Series A, 239-327 Operation, Pressure Relief Procedure, Flush the Pump Before First Use

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Operation

Operation

Pressure Relief Procedure

Pressure Relief Procedure WARNING

INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid

under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor install or clean the spray tip.

1.Lock the gun trigger safety.

2.Shut off the air supply to the pump.

3.Close the bleed-type master air valve (required in your system).

4.Unlock the gun trigger safety.

5.Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve pressure.

6.Lock the gun trigger safety.

7.Open the drain valve (required in your system), and have a container ready to catch the drainage.

8.Leave the drain valve open until you are ready to spray again.

If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen it completely. Then clear the tip or hose.

Flush the Pump Before First Use

The pump is tested with lightweight oil, which is left in to protect the pump parts. If the fluid you are using may be contaminated by the oil, flush it out with a compatible solvent before using the pump. If the pump is being used to supply a circulating system, allow the solvent to circulate until the pump is thoroughly flushed. See Flushing the Pump on page 9.

Packing Nut/Wet-Cup

Flush the Pump Before First Use WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure at left.

Keep the packing nut/wet-cup (V) filled with Graco Throat Seal Liquid (TSL) or compatible solvent to help prolong the packing life. Check the tightness of the packing nut weekly; tighten just enough to prevent leakage; do not overtighten it. See Fig. 3 on page 11. Relieve the pressure before adjusting the packing nut or adding TSL.

Starting and Adjusting the Pump

Begin these steps before you install the spray tip.

1.Ensure that the air regulator (E) and bleed-type master air valve (D) are closed. See Fig. 2 on page 6.

2.Connect a suction hose (N) to the pump's fluid inlet, or lower the pump into a fluid supply container.

3.Hold a metal part of the spray gun (M) firmly to the side of a grounded metal pail and hold the trigger open.

4.Open the pump's bleed-type master air valve (D).

5.Slowly open the air regulator (E) until the pump starts; approximately 2.8 bar (0.28 MPa, 40 psi).

6.Cycle the pump slowly until all the air is pushed out and the pump and hoses are fully primed.

7.Release the spray gun trigger and lock the trigger safety. The pump should stall against pressure when you release the trigger.

Packing Nut/Wet-Cup WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure at left.

8.Relieve the pressure.

9.Install the spray tip in the gun.

83￿8￿739

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Contents INSTRUCTIONS-PARTSLIST 308±739Part No. 239±327, Series A Rev. ATable of Contents SymbolsWarning Symbol Caution SymbolINJECTION HAZARD MOVING PARTS HAZARDFIRE AND EXPLOSION HAZARD TOXIC FLUID HAZARDInstallation Prepare the OperatorPrepare the Site Mounting the PumpTypical Installation InstallationSystem Accessories InstallationPressure Relief Procedure Starting and Adjusting the PumpOperation Flush the Pump Before First UseShutdown and Care of the Pump Flushing the PumpOperation COMPONENT RUPTURE HAZARDTroubleshooting ProblemSolution CauseReconnecting the Displacement Pump ServiceDisconnecting the Displacement Pump Parts see manual 307±043see manual 306±981 Part No. 239±327, Series ADimensions Mounting HoleLayout Dimensiontested in accordance with ISO 9614±2 Technical DataSound Power Levels dBa Performance Chart 308739Technical Data bar, MPa1±800±367±4023 Toll Free The Graco Warranty and DisclaimersGraco Phone Number
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239-327, Series A specifications

Graco is a renowned manufacturer known for its high-quality spray equipment and pumps, catering to both professionals and DIY enthusiasts. Their diverse lineup includes advanced models such as Series A, Series C, Model 237069, Model 289310, and Model 238620, each uniquely engineered to meet various painting and coating applications.

The Graco Series A is an outstanding choice for smaller projects. Its lightweight design and portability make it ideal for residential touch-ups, woodworking, and other small-scale applications. This series boasts a simple setup with an easy-to-use spray gun that enables users to achieve a smooth, even finish. Equipped with Graco’s ProConnect technology, Series A allows for quick pump replacement without any tools, ensuring minimal downtime during projects.

The Graco Series C offers enhanced performance and greater versatility for larger applications. This series is designed for professional contractors and serious DIYers, featuring robust construction and advanced technology. With a higher flow rate and pressure capabilities, Series C can handle more demanding projects such as residential and commercial buildings. Additionally, it incorporates SmartControl technology, electronically controlling pressure to provide consistent spray patterns regardless of the fluid being used.

Model 237069 is another exceptional option known for its compact design and efficiency. This electric airless sprayer is perfect for various interior and exterior applications, standing out due to its ease of operation. It features a reversible spray tip, allowing users to quickly clear clogs, and the adjustable pressure settings provide flexibility for different surface textures. Model 237069 is engineered for durability, making it a reliable choice for frequent use.

Model 289310 is engineered for professionals who prioritize speed and precision. This heavy-duty sprayer is equipped with an advanced hydraulic system, which ensures a consistent flow of material. Its larger hopper capacity minimizes the need for frequent refills, allowing users to complete extensive projects faster. Furthermore, the model includes an ergonomic design that reduces fatigue, empowering operators to work longer with comfort.

Lastly, Model 238620 exemplifies Graco’s commitment to innovation in airless technology. This model features an integrated digital display that offers real-time feedback and monitoring, enhancing overall user experience. With its streamlined pump design and advanced filter system, Model 238620 is capable of handling a wide range of coatings, from thin stains to thick latex paints.

In conclusion, Graco's Series A, Series C, Model 237069, Model 289310, and Model 238620 represent the brand’s dedication to quality, performance, and user-friendliness. These models cater to various project sizes and requirements, making them valuable assets for both amateurs and seasoned professionals in the painting industry.
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