Graco Inc GX-7 DI, 311321H, GX-7 400, GX-7A Daily Start-up, Daily Shutdown

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Operation Basics

Daily Start-up

Ensure gun is attached to coupling block and air hose. Ensure proportioning unit is at desired temperature and pressure. Properly ground equipment to avoid static sparking that may result in fire or explosion.

1.Connect air supply to gun.

2.Adjust air cap adjustment valve. Turn knob counterclockwise to open valve and clock- wise to close valve

3.Adjust rear seal retainer.

4.Open both manual valves. See Coupling Block section, page 13.

5.Set safety stop to OPEN.

6.Test spray on disposable surface.

Daily Shutdown

Follow daily shutdown procedure when gun is out of service for any length of time, or for mid- or end-of-day service. See Clean Spray Gun Procedure, page 20.

1.Set safety stop to OPEN.

2.Close both manual valves.

3.Disconnect air supply from gun.

4.Shutdown proportioning unit as required. See Proportioner manual.

5.Clean as required. See Clean Spray Gun Procedure, page 20.

Do not disassemble gun daily for cleaning

if it is operating properly. However, if gun is removed from coupling block, it must be flushed and cleaned thoroughly.

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311321H

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Contents Important Safety Instructions 311321HGX-7 Contents ModelsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Overall View Model GX-7AModel GX-7 DI Valving Rod Rear Stop Gun Block Air Cap Valve Model GX-7Locknut TriggerCenterline Components GX-7A Centerline ComponentsGX-7 400 Centerline Components Mixing Module GX-7A Mixing ModuleIsocyanate Hazard Safety PositionOperation Basics Keep a and B Components SeparateConnect Air Hoses Disengage Safety StopAir Hose Connection Disconnect Air HosesInstallation and Removal Coupling BlockManual Valves Air Inlet Configuration Optional ConfigurationRemove Coupling Block Mixing Module and PCD Installation Do not OvertightenValving Rod Adjustment GX-7A and GX-7 400 Models OnlyGX-7 DI Model Only Initial Set Up Daily Start-up Daily ShutdownPressure Relief Procedure Trigger GunMaintenance 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 Replace End Cap and Air Piston Assembly GX-7 DI ShownReplace Trigger Valve O-Rings Replace Trigger Valve O-RingClean Mixing Module Unthread Cap from PCD BodyInstall Mixing Module Install Mixing ModuleClean Pattern Control Disc GX-7A Model ShownGX-7A Model Final Assembly PartsGX-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 GX-7 400 Model Final Assembly Module Kit ,GX-7A Model Handle Assembly GX-7 Model Handle Assembly DescriptionGX-7 DI Model Handle Assembly GX-7 DI Model Handle Assembly Description QtyGX-7 400 Model Handle Assembly GX-7 400 Model Handle Assembly Coupling Block Assembly All modelsSpecifications GX-7A Mix Module KitSet-Up Chart for GX-7A Model TipQuantity In/mm Module Kits Cleanout Drill Iso PortGX-7 400 Mix Module Kit Module Only Size RefSet-up Chart for GX-7 400 Model Tip Kits for GX-7 400 Gun No. Ref QuantityPattern Lbs/min GX-7 DI Model SpecificationsModule/Tip Data for Chemical Sprayed at 2500 PSI Output Round Spray PatternFor GX-7A and GX-7 DI Models Tip KitsTool Kits Round Tip Kits Size QuantityTechnical Data Category DataGraco Standard Warranty