Graco 288048 Operation, Pressure Relief Procedure, Apply the Fluid, Incorrect, Correct

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Operation

Pressure Relief Procedure

1.Shut off the power to the pump.

2.Turn off the air and fluid supply to the gun.

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

4.Trigger the gun into a grounded metal waste con- tainer to relieve the fluid pressure.

Operation

Apply the Fluid

Adjust the system control device, if it is automatic, so the gun starts spraying just before meeting the workpiece and stops as soon as the workpiece has passed. Keep the gun a consistent distance, 8 to 10 in. (200 to 250 mm), from the surface of the object being sprayed.

To achieve best results when applying fluid:

Keep gun perpendicular and 8 to 10 inches (200 to 250 mm) from object being sprayed.

Use smooth, parallel strokes across surface to be sprayed with 50% overlap. See FIG. 10.

TI8174a

FIG. 9: Pressure Relief

5.Open the pump drain valve (required in the system) to help relieve fluid pressure in the displacement pump. In addition, open the drain valve connected to the fluid pressure gauge (in a system with fluid regu- lation) to help relieve fluid pressure in the hose and gun. Triggering the gun to relieve pressure may not be sufficient. Have a container ready to catch the drainage.

6.Leave the drain valve(s) open until you are ready to spray again.

7.If you suspect that the spray tip 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 gradually, then loosen the coupling completely. Now clear the tip or hose obstruction.

Incorrect

TI8098a

Correct

TI8099a

FIG. 10: Correct Spray Method

311053H

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Contents Model 288048 Shown Automatic Airless Spray GunsContents Equipment Misuse Hazard Pressurized Equipment Hazard Non-circulating System InstallationVentilate Spray Booth Configure Gun and ManifoldGround System Install Air FittingsAll Manifolds Mount GunReciprocating Arm Rod Mount Stationary Support MountSetup KEY Manifolds 288219Flush Spray Gun Install Spray TipAdjust Spray Pattern Adjust a Streaming TipIncorrect Pressure Relief ProcedureOperation Apply the FluidDaily Gun Care Perform Pressure Relief Procedure, General System MaintenanceDaily Cleaning Procedure Daily Flushing ProcedureProblem Cause Solution TroubleshootingGeneral Troubleshooting Problem Cause Solution Spray Pattern Troubleshooting Disassembly ServiceService Notes Reassembly Model Parts11† Ref. only Part No. Description Qty TIP see GG0 Series Tip Selec Tion Charts,Parts North America and International Manifold Description QtyGG0 Series Spray Tips GG0 Series Tip Selection ChartsSingle Orifice Fan Pattern Spray Tips Sealer Application Tip and Air Cap Selection ChartsShower Tip Streaming TipsAccessories Dimensions Manifold Mounting Hole Layout Mounting Hole LayoutSound Pressure Levels dBa Technical DataSound Power Levels dBa Triggering SpeedGraco Information Graco Standard Warranty