Graco Inc GX-7 400, 311321H, GX-7 DI, GX-7A important safety instructions Flush Gun

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2.Close both manual valves.

3.Remove gun from coupling block.

4.Attach service block of gun service kit to spray gun, and then tighten using 5/16 in. nut driver.

5.Pressurize Service Kit container up to 100 psi. DO NOT EXCEED 100 psi (0.7 MPa, 7 bar).

6.Open one manual valve on service block.

7.Connect air to gun. Set safety stop to OPEN.

8.Hold gun against grounded waste con- tainer.

9.Trigger gun and 1-Quart Gun Service Kit. Spray into waste container until there is a fine, unobstructed mist of gun cleaner.

10.Release both triggers and close manual valve on service block.

11.Repeat steps 5-7 for other side of gun.

12.After initial cleaning, remove air cap, PCD retainer, and PCD. Flush a second time to ensure thorough cleaning.

13.Remove service block of gun service kit from spray gun.

14.Set safety to CLOSED (SERVICE).

15.Disconnect air supply.

Maintenance

16.Clean screens, check valves and screen screw as required. See Service Screen Screw, page 22.

Inspect air cap, PCD, mixing module, and gun block for build up of material and clean as required.

Do not use metal cleaning devices to clean plastic components.

Flush Gun

To avoid static sparking that may result in fire or explosion, ensure all equipment in flushing procedure is grounded. Do not flush on or near foamed or coated surfaces.

1.Set safety stop to CLOSED (SERVICE).

2.Close both manual valves.

3.Loosen R-Screen screw and then remove by hand.

4.Use flush can to thoroughly flush screen screw and screen screw cavity.

5.Loosen A-Screen screw and then remove by hand.

6.Use flush can to thoroughly flush screen screw and screen screw cavity.

7.Service gun by following Maintenance pro- cedures, page 20.

311321H

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Contents Important Safety Instructions 311321HGX-7 Models ContentsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Overall View Model GX-7AModel GX-7 DI Locknut Model GX-7Valving Rod Rear Stop Gun Block Air Cap Valve TriggerGX-7A Centerline Components Centerline ComponentsGX-7 400 Centerline Components GX-7A Mixing Module Mixing ModuleOperation Basics Safety PositionIsocyanate Hazard Keep a and B Components SeparateAir Hose Connection Disengage Safety StopConnect Air Hoses Disconnect Air HosesInstallation and Removal Coupling BlockManual Valves Air Inlet Configuration Optional ConfigurationRemove Coupling Block Do not Overtighten Mixing Module and PCD InstallationValving Rod Adjustment GX-7A and GX-7 400 Models OnlyGX-7 DI Model Only Initial Set Up Daily Shutdown Daily Start-upTrigger Gun Pressure Relief ProcedureMaintenance Gun Service KitsClean Spray Gun Procedure Flush Gun Service Screen Screw RepairRemove Centerline Components Remove valving rod. Rod Draw Bar Valving Rod Install Centerline Components GX-7 DI Shown Replace End Cap and Air Piston AssemblyReplace Trigger Valve O-Ring Replace Trigger Valve O-RingsUnthread Cap from PCD Body Clean Mixing ModuleInstall Mixing Module Install Mixing ModuleGX-7A Model Shown Clean Pattern Control DiscParts GX-7A Model Final AssemblyGX-7A Model Final Assembly No. Part No. DescriptionModule see GX-7A Mix Mod GX-7 DI Model Final Assembly GX-7 DI Model Final Assembly Module see GX-7 DI Model Specifications ,No. Part No. Description Qty GX-7 400 Model Final Assembly Module Kit , GX-7 400 Model Final AssemblyGX-7A Model Handle Assembly Description GX-7 Model Handle AssemblyGX-7 DI Model Handle Assembly Description Qty GX-7 DI Model Handle AssemblyGX-7 400 Model Handle Assembly GX-7 400 Model Handle Assembly All models Coupling Block AssemblyGX-7A Mix Module Kit SpecificationsTip Set-Up Chart for GX-7A ModelGX-7 400 Mix Module Kit Module Kits Cleanout Drill Iso PortQuantity In/mm Module Only Size RefTip Kits for GX-7 400 Gun No. Ref Quantity Set-up Chart for GX-7 400 ModelModule/Tip Data for Chemical Sprayed at 2500 PSI Output GX-7 DI Model SpecificationsPattern Lbs/min Round Spray PatternTool Kits Tip KitsFor GX-7A and GX-7 DI Models Round Tip Kits Size QuantityCategory Data Technical DataGraco Standard Warranty