Graco Inc 311321H, GX-7 400, GX-7 DI, GX-7A important safety instructions Install Mixing Module

Page 28

Repair

Install Mixing Module

1.Install safety stop; leave in OPEN position.

2.Connect air supply to gun.

3.Depress gun trigger and slide mixing mod- ule over end of valving rod.

GX-7 DI model only: ensure valving rod alignment pin enters alignment slot in gun block.

Keep gun trigger depressed.

4.With gun trigger depressed, thread mixing module retainer or PCD body with packing installed, by hand, and then wrench tighten.

CAUTION

To avoid damage to module and gun block, do not overtighten mixing module retainer.

5.Release gun trigger.

6.Install PCD over end of mixing module retainer.

7.Thread PCD retainer onto gun block. Hand tight.

8.Rotate flat PCD to adjust orientation as required.

9.Adjust valving rod. See Valving Rod Adjustment, page 16.

10.Thread air cap into place; hand tight.

11.Slide safety stop onto rear of air cylinder. Push safety stop partially forward and rotate clockwise to set to OPEN.

Module

PCD Body

PCD

Note orientation of fan tip

Front Packing	Air Cap

Retainer O-Ring

PCD Retainer

FIG. 29: Install Mixing Module

28

311321H

Image 28

Contents 311321H Important Safety InstructionsGX-7 Contents ModelsPersonal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Model GX-7A Overall ViewModel GX-7 DI Model GX-7 LocknutValving Rod Rear Stop Gun Block Air Cap Valve TriggerCenterline Components GX-7A Centerline ComponentsGX-7 400 Centerline Components Mixing Module GX-7A Mixing ModuleSafety Position Operation BasicsIsocyanate Hazard Keep a and B Components SeparateDisengage Safety Stop Air Hose ConnectionConnect Air Hoses Disconnect Air HosesCoupling Block Installation and RemovalManual Valves Optional Configuration Air Inlet ConfigurationRemove Coupling Block Mixing Module and PCD Installation Do not OvertightenGX-7A and GX-7 400 Models Only Valving Rod AdjustmentGX-7 DI Model Only Initial Set Up Daily Start-up Daily ShutdownPressure Relief Procedure Trigger GunGun 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 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 PartsNo. 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 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 TipModule Kits Cleanout Drill Iso Port GX-7 400 Mix Module KitQuantity In/mm Module Only Size RefSet-up Chart for GX-7 400 Model Tip Kits for GX-7 400 Gun No. Ref QuantityGX-7 DI Model Specifications Module/Tip Data for Chemical Sprayed at 2500 PSI OutputPattern Lbs/min Round Spray PatternTip Kits Tool KitsFor GX-7A and GX-7 DI Models Round Tip Kits Size QuantityTechnical Data Category DataGraco Standard Warranty