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

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

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

Contents

311321H Important Safety InstructionsGX-7 Models Contents Personal 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 Valve GX-7A Centerline Components Centerline Components GX-7 400 Centerline Components GX-7A Mixing Module Mixing Module Keep a and B Components Separate Safety PositionOperation Basics Isocyanate Hazard Disconnect Air Hoses Disengage Safety StopAir Hose Connection Connect Air Hoses Coupling Block Installation and RemovalManual Valves Optional Configuration Air Inlet ConfigurationRemove Coupling Block Do not Overtighten Mixing Module and PCD Installation GX-7A and GX-7 400 Models Only Valving Rod AdjustmentGX-7 DI Model Only Initial Set Up Daily Shutdown Daily Start-up Trigger Gun Pressure Relief Procedure Gun 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 Assembly Replace Trigger Valve O-Ring Replace Trigger Valve O-Rings Unthread Cap from PCD Body Clean Mixing Module Install Mixing Module Install Mixing Module GX-7A Model Shown Clean Pattern Control Disc Parts GX-7A Model Final Assembly No. 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 Assembly GX-7A Model Handle Assembly Description GX-7 Model Handle Assembly GX-7 DI Model Handle Assembly Description Qty GX-7 DI Model Handle Assembly GX-7 400 Model Handle Assembly GX-7 400 Model Handle Assembly All models Coupling Block Assembly GX-7A Mix Module Kit Specifications Tip Set-Up Chart for GX-7A Model Module Only Size Ref Module Kits Cleanout Drill Iso PortGX-7 400 Mix Module Kit Quantity In/mm Tip Kits for GX-7 400 Gun No. Ref Quantity Set-up Chart for GX-7 400 Model Round Spray Pattern GX-7 DI Model SpecificationsModule/Tip Data for Chemical Sprayed at 2500 PSI Output Pattern Lbs/min Round Tip Kits Size Quantity Tip KitsTool Kits For GX-7A and GX-7 DI Models Category Data Technical Data Graco Standard Warranty