Graco Inc 309856P, TI3840a, 2004230905 Theory of Operation, Gun Triggered Fluid Spraying

Page 32

Troubleshooting

Theory of Operation

Gun Triggered (Fluid Spraying)

Purge rod (31) moves back, opening impingement ports (IP). Components A and B combine in mix module (39). Fluid sprays from CeramTip (40).

Cleanoff air flows whether gun is triggered or detrig- gered. See page 13 to adjust.

KEY

Fluid

Cleanoff Air

31IP

40

39

TI3882a

Gun Detriggered (Mechanical Purging)

Purge rod (31) moves forward, closing impingement ports (IP) and shutting off fluid flow. Rod pushes through mix module (39) and bottoms on CeramTip (40), forcing out excess fluid and restoring proper orifice diameter.

Cleanoff air flows whether gun is triggered or detrig- gered. See page 13 to adjust.

KEY

Fluid

Cleanoff Air

31IP

39 40

TI3881a

32

309856P

Image 32

Contents Plural Component, Impingement Mix Mechanical Purge Spray Gun Contents Manual Conventions Pressure in psi MPa, bar List of Models/Selection GuideStandard Round Pattern Guns Standard Flat Pattern Guns Direct Impingement Round Pattern Guns Flow Rate in gpm lpmDirect Impingement Flat Pattern Guns Four-Hose Gun Personal Protective Equipment Fire and Explosion Hazard Overall View KeyPiston Safety Lock Isocyanate HazardKeep a and B Components Separate GroundingSetup ISODisengage piston safety lock, Adjust Purge Rod 1/4 TurnAdjust Flat CeramTip Follow Pressure Relief Procedure, ShutdownDaily Shutdown Shutdown for More than a DayPressure Relief Procedure Optional Configurations Optional Fluid Manifold PositionFollow Pressure Relief Procedure, page 18. Also Optional Hose PositionFluid Hoses Air HoseMaintenance Clean Outside of Gun Clean Air CapClean Muffler Clean Fluid ManifoldClean Slip-Fit Polycarballoy Mix Module Cleaning Component a ISO PortsImpingement Port Cleanout Drill Sizes Impingement Port Drill Counterbore DrillXF1313 #81 Clean CeramTip External Quick Cleaning MethodCleanout Drill Sizes for Round CeramTips Round CeramTipStuck Purge Rod Clean Purge RodAdjust Purge Rod, Disassemble Front End, Adjust Front Rod SealReassemble Front End, Adjust Purge Rod, Adjust Rear Rod Seal Troubleshooting See Clean Purge Rod,Adjust Rear Rod Seal, Gun Detriggered Mechanical Purging Theory of OperationGun Triggered Fluid Spraying Cutaway View Repair Tools RequiredLubrication Replace CeramTipDisassemble Front End Reassemble Front End Adjust Purge Rod, Slip-Fit Polycarballoy Mix Module Attach fluid manifold. Return gun to service Rear Rod Seal Check Valves Piston and Purge Rod Install piston safety lock assembly until bottomed out Piston Safety Lock Air Valve309856P Parts Flush Manifold DetailPart No. Description Qty HandleSlip-Fit Polycarballoy Mix Module Kits Slip-Fit Polycarballoy Mix Module Part Numbering CodeStandard Round Pattern Guns Standard Flat Pattern GunsDirect Impingement Round Pattern Guns Direct Impingement Flat Pattern GunsCeramTip Kits Round CeramTip Part Numbering CodeFlat CeramTip Part Numbering Code Flat CeramTipsDrill Bit Kits Kit Part No Qty in Kit Drill Bit Size Illustration NominalGun Repair Kits Check Valve Filter Screen Kits 10 per kitAccessories Pour Nozzle Kit Solvent Flush Pail KitHose Adapter Kits Technical Data Category DataToll Free Graco Standard WarrantyGraco Information