Graco TI3840a important safety instructions Adjust Rear Rod Seal

Page 31

		Troubleshooting

PROBLEM	CAUSE	SOLUTION


Loss of round pattern.	Dirty CeramTip (40).	Clean, page 26.

	Too little cleanoff air.	Readjust, page 13.

Loss of flat pattern.	Plugged CeramTip (40).	Clean in compatible solvent.

	Worn CeramTip (40).	Replace, page 34.

Pressure imbalance.	Plugged impingement ports.	Clean, page 23. Reinstall mix mod-
		ule, page 38.

	Plugged check valves (36).	Clean, page 41.

	Viscosities not equal.	Adjust temperature to compensate.

Fluid mist from CeramTip.	Worn mix module (39).	Replace, page 38.

	Worn front rod seal (46).	Replace, page 40.

Excessive overspray.	Too much cleanoff air.	Reduce, page 13.

Rapid buildup of material on air cap.	Too little cleanoff air.	Increase, page 13.

Fluid does not shut off when fluid	Damaged fluid valves (12b).	Replace.
valves are closed.

Reduced cleanoff air.	Plugged air passage.	Open.

Air leakage around fluid housing.	Damaged or missing o-ring (20).	Replace.

Air leakage from piston safety lock.	Damaged or missing o-rings (18).	Replace, page 42.

Burst of air from muffler when gun is	Normal.	No action required.
triggered.

Steady air leakage from muffler.	Damaged air valve o-rings (24)	Replace, page 44.

	Damaged piston o-rings (16, 19).	Replace, page 42.

Air leakage from front air valve.	Damaged air valve o-rings (24).	Replace, page 44.

Component B (resin) leak from fluid	Worn rear rod seal.	Adjust Rear Rod Seal, page 29.
housing.

309856U

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Image 31

Contents Plural Component, Impingement Mix Mechanical Purge Spray Gun Important Safety InstructionsContents Manual Conventions Standard Round Pattern Guns List of Models/Selection GuidePressure in psi MPa, bar 247291, a Standard Flat Pattern GunsFlow Rate in gpm lpm Direct Impingement Round Pattern GunsDirect Impingement Flat Pattern Guns Four-Hose Gun Personal Protective Equipment Fire and Explosion Hazard Key Overall ViewGrounding Piston Safety LockIsocyanate Hazard Keep a and B Components SeparateISO SetupDisengage piston safety lock, 1/4 Turn Adjust Purge RodAdjust Flat CeramTip Shutdown for More than a Day Follow Pressure Relief Procedure,Shutdown Daily ShutdownPressure Relief Procedure Optional Fluid Manifold Position Optional ConfigurationsAir Hose Follow Pressure Relief Procedure, page 18. AlsoOptional Hose Position Fluid HosesMaintenance Clean Fluid Manifold Clean Outside of GunClean Air Cap Clean MufflerCleaning Component a ISO Ports Clean Slip-Fit Polycarballoy Mix ModuleImpingement Port Cleanout Drill Sizes XF1313 #81 Round CeramTip Clean CeramTipExternal Quick Cleaning Method Cleanout Drill Sizes for Round CeramTipsAdjust Purge Rod, Clean Purge RodStuck Purge Rod Reassemble Front End, Adjust Purge Rod, Adjust Front Rod SealDisassemble Front End, Adjust Rear Rod Seal See Clean Purge Rod, TroubleshootingAdjust Rear Rod Seal, Gun Triggered Fluid Spraying Theory of OperationGun Detriggered Mechanical Purging Cutaway View Replace CeramTip RepairTools Required LubricationDisassemble 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 Air Valve Piston Safety Lock309856U Flush Manifold Detail PartsHandle Part No. Description QtyStandard Flat Pattern Guns Slip-Fit Polycarballoy Mix Module KitsSlip-Fit Polycarballoy Mix Module Part Numbering Code Standard Round Pattern GunsDirect Impingement Flat Pattern Guns Direct Impingement Round Pattern GunsFlat CeramTips CeramTip KitsRound CeramTip Part Numbering Code Flat CeramTip Part Numbering CodeKit Part No Qty in Kit Drill Bit Size Illustration Nominal Drill Bit KitsCheck Valve Filter Screen Kits 10 per kit Gun Repair KitsAccessories Hose Adapter Kits Solvent Flush Pail KitPour Nozzle Kit Category Data Technical DataGraco Information Graco Standard WarrantyToll Free