Graco Inc GX-7A, 311321H, GX-7 400, GX-7 DI Pressure Relief Procedure, Trigger Gun

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Pressure Relief Procedure

Pressure Relief Procedure

Relieve pressure before cleaning or repairing gun.

1. Close both manual valves.

Manual Valves

FIG. 19: Close Manual Valves

2.Set safety stop to OPEN.

3.Trigger gun onto cardboard or into waste container to relieve pressure.

4.Release gun trigger, set safety stop to CLOSED, and close manual valves.

If fluid in hose and proportioner is still under pressure, follow Pressure Relief Procedure in proportioner manual

To relieve pressure in hose after gun is removed, place fluid manifold over contain- ers, facing away from you. Very carefully open fluid valves. Under high pressure, fluid will spray sideways from fluid ports. See FIG. 21.

TI2484a

FIG. 21: Open Manual Valves

2!

FIG. 20: Trigger Gun

311321H

19

Image 19

Contents 311321H Important Safety InstructionsGX-7 Models ContentsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Model GX-7A Overall ViewModel GX-7 DI Trigger Model GX-7Locknut Valving Rod Rear Stop Gun Block Air Cap ValveGX-7A Centerline Components Centerline ComponentsGX-7 400 Centerline Components GX-7A Mixing Module Mixing ModuleKeep a and B Components Separate Safety PositionOperation Basics Isocyanate HazardDisconnect Air Hoses Disengage Safety StopAir Hose Connection Connect Air HosesCoupling Block Installation and RemovalManual Valves Optional Configuration Air Inlet ConfigurationRemove Coupling Block Do not Overtighten Mixing Module and PCD InstallationGX-7A and GX-7 400 Models Only Valving Rod AdjustmentGX-7 DI Model Only Initial Set Up Daily Shutdown Daily Start-upTrigger Gun Pressure Relief ProcedureGun Service Kits MaintenanceClean Spray Gun Procedure Flush Gun Repair Service Screen ScrewRemove 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 AssemblyNo. Part No. Description GX-7A Model Final AssemblyModule see GX-7A Mix Mod GX-7 DI Model Final Assembly Module see GX-7 DI Model Specifications , GX-7 DI Model Final AssemblyNo. 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 ModelModule Only Size Ref Module Kits Cleanout Drill Iso PortGX-7 400 Mix Module Kit Quantity In/mmTip Kits for GX-7 400 Gun No. Ref Quantity Set-up Chart for GX-7 400 ModelRound Spray Pattern GX-7 DI Model SpecificationsModule/Tip Data for Chemical Sprayed at 2500 PSI Output Pattern Lbs/minRound Tip Kits Size Quantity Tip KitsTool Kits For GX-7A and GX-7 DI ModelsCategory Data Technical DataGraco Standard Warranty