Graco Inc GX-7A Operation Basics, Isocyanate Hazard, Keep a and B Components Separate, Grounding

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Operation Basics

To prevent accidental gun operation, always disconnect air supply before servicing gun or anytime gun is not in use.

Isocyanate Hazard

Spraying materials containing isocyanates creates potentially harmful mists, vapors, and atomized particulates.

Read material manufacturer’s warnings and material MSDS to know specific hazards and precautions related to isocyanates.

Prevent inhalation of isocyanate mists, vapors, and atomized particulates by provid- ing sufficient ventilation in the work area. If sufficient ventilation is not available, a sup- plied-air respirator is required for everyone in the work area.

To prevent contact with isocyanates, appro- priate personal protective equipment, includ- ing chemically impermeable gloves, boots, aprons, and goggles, is also required for everyone in the work area.

Keep A and B Components Separate

CAUTION

To prevent cross-contamination of the gun’s wetted parts, do not interchange A compo- nent (isocyanate) and B component (resin) parts. The gun is shipped with the A side on the left.

Operation Basics

Grounding

Check your local electrical code and propor- tioner manual for detailed grounding instruc- tions.

Ground the spray gun through connection to a Graco-approved grounded fluid supply hose.

Safety Position

The guns have a two-position valving rod rear stop. The SERVICE position allows for minimal rearward travel of valving rod but will not allow chemical to discharge. The OPEN position allows full rearward travel of valving rod and permits gun to dispense. Whenever gun is not spraying, set to SERVICE position.

Engage Safety Stop

To engage safety stop, push in and turn safety stop clockwise to place gun in CLOSED (SER- VICE) position.

CLOSED (SERVICE)

When not spraying in safety position.

FIG. 10: Safety Stop - Closed

311321H

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Contents GX-7 Important Safety Instructions311321H Models ContentsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Model GX-7 DI Overall ViewModel GX-7A 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 HosesManual Valves Installation and RemovalCoupling Block Remove Coupling Block Air Inlet ConfigurationOptional Configuration Do not Overtighten Mixing Module and PCD InstallationGX-7 DI Model Only Valving Rod AdjustmentGX-7A and GX-7 400 Models Only Initial Set Up Daily Shutdown Daily Start-upTrigger Gun Pressure Relief ProcedureClean Spray Gun Procedure MaintenanceGun Service Kits Flush Gun Remove Centerline Components Service Screen ScrewRepair 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 AssemblyModule see GX-7A Mix Mod GX-7A Model Final AssemblyNo. Part No. Description GX-7 DI Model Final Assembly No. Part No. Description Qty GX-7 DI Model Final AssemblyModule see GX-7 DI Model Specifications , 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