Graco 24G979, 238338 Operation, Pressure Relief Procedure, Adjustments, Application Data

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Operation

Operation

Pressure Relief Procedure

1.Shut off air supply to the bead tank. Relieve pres- sure from bead tank.

2.Close the master air valve (required with air-pow- ered pumps).

3.Actuate the dispensing valve to relieve pressure.

4.Leave the drain valve(s) open until you are ready to dispense again.

If you suspect that the dispensing valve or hose is com- pletely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the hose end coupling and relieve pressure grad- ually, then loosen completely. Then clear the valve or hose.

Adjustments

Set the actuating air to at least 50 psi (3.5 bar) for single acting gun and 80 psi (5.5 bar) for double acting gun, then start the pump. Set the glass bead supply tank pressure between 30 psi (2.1 bar) and 75 psi (5.2 bar) for desired flow rate.

NOTE: Bead delivery will very with each application. Always test the system for actual delivery and adjust air pressure or nozzle size as needed.

Application Data

See RoadLazer System manual 3A1214.

Nozzle Size Selection

Use the Nozzle Size Selection and Bead Delivery Tables to select the size of nozzle for the travel speed and bead coverage to be used. These tables are based on a 15 mil paint application.

1.Go to Bead Delivery (Lb/Min) Table and select:

a.Speed in MPH or KPH row.

b.Bead coverage in Pounds Per Gallon (kg/l) column.

c.Value at intersection of MPH (KPH) row and Pounds Per column is bead delivery in lb/min (kg/min).

2.Go to Nozzle Size Selection Table and select:

a.Bead Delivery lb/min (kg/min) column deter- mined by Bead delivery lb/min (kg/min) value.

b.Psi value Glass Bead Tank psi (bar) row.

c.Curve (1, 2, 3 or 4) at intersection of Glass Bead Tank psi row and Bead Delivery lb/min (kg/min) column is nozzle size value.

d.Select nozzle size that allows range of adjust- ment for more or less flow.

NOTE: If dispensing reflective elements for double drop application, the minimum nozzle size is .280 in. If a smaller size is used, clogging of the nozzle orifice may occur.

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308612J

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Contents RoadLazer RoadPak Line Striping System Single Acting and Double Acting Bead Spray Guns forII 2 G T5 Equipment Misuse Hazard Installation Mount ValveConnect Material Line Connect the Air LinesPressure Relief Procedure AdjustmentsOperation Application DataGlass Bead Tank psi bar Bead Delivery lb/min kg/minBead Delivery lb/min kg/min Orifice Diameter Maintenance ServiceClean Dispensing Valve and System Daily Oil Dispensing Valve DailyAir Piston, Spring and Seals Perform Pressure Relief Procedure,Double Acting Single Acting Troubleshooting Problem Cause SolutionModel Parts List Replacement Parts and Kits Single Acting GunPart Description Qty Replacement Parts and Kits Double Acting Gun Model 24G979Technical Data AccessoriesValve Seat and O-Ring Kits Graco Information Graco Standard WarrantyGraco Headquarters Minneapolis

24G979, 238338 specifications

The Graco 238338, also known as 24G979, is a key player in the world of airless paint sprayers, delivering exceptional performance for both professional contractors and DIY enthusiasts. This innovative sprayer is designed to simplify the painting process while enhancing productivity and providing a high-quality finish.

One of the standout features of the Graco 238338 is its robust construction and durability. Built with high-quality materials, this sprayer is designed to withstand the rigors of heavy-duty use. This makes it an ideal choice for large-scale projects, such as commercial buildings or extensive home renovations. Its rugged design ensures that it can handle various materials, including thick paints, stains, and sealers, making it versatile for different applications.

The Graco 238338 boasts advanced technology that enhances its performance. It features a powerful motor that delivers consistent pressure, allowing for smooth and even paint application. This high-efficiency piston pump technology ensures that users can achieve professional-quality results with minimal effort. The motor’s efficiency also means that it operates quietly, which is particularly beneficial for residential areas or indoor projects.

Another significant characteristic of the Graco 238338 is its easy setup and operation. The user-friendly design includes intuitive controls that allow even novice users to get started quickly. Its lightweight and portable design makes it easy to transport from one job site to another, ensuring that users can take it wherever their projects lead.

Moreover, the sprayer is equipped with Graco's ProConnect technology, which allows for quick and straightforward pump replacement. This feature minimizes downtime and keeps projects moving forward, ensuring that users can maintain productivity without unnecessary interruptions.

Safety and convenience features are also integral to the Graco 238338’s design. It includes an integrated hose storage system, reducing clutter and ensuring that users can easily access their tools. Additionally, the sprayer comes with adjustable pressure control, allowing users to customize the paint flow to suit their specific needs and achieve the desired finish.

In summary, the Graco 238338, 24G979, is a powerful airless paint sprayer that stands out due to its durability, advanced technology, and ease of use. With features like a high-efficiency piston pump and ProConnect technology, it is designed for both efficiency and quality. Whether for professional use or home improvement projects, this sprayer is a reliable choice that enhances the painting experience.
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