Graco Inc G40, 311052E, 288046, 288217 important safety instructions Spray Pattern Troubleshooting

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		Troubleshooting
Spray Pattern Troubleshooting

Problem	Cause	Solution


Fluttering spray.	Insufficient fluid supply.	Adjust fluid regulator or fill fluid sup-
		ply tank.
	Air in paint supply line.	Check, tighten siphon hose connec-
		tions, bleed air from paint line.

Spitting spray.		Worn diffuser-seat (10) or needle	Inspect diffuser-seat and needle for
		(14) ball.	wear. Replace if necessary.
			To improve sealing when spraying
			lightweight materials and sealing life
			when spraying acid catalyzed materi-


			als, use needle (SST) available with
			1/8 in. ball only, and diffuser-seat
			(plastic). See Parts, page 25.
		Dirty spray tip (9) or air cap (30).	Clean.
			Clean.

Irregular pattern.		Fluid build-up or spray tip partially	Clean spray tip. See page 15.
		plugged.
		On defective side of pattern, air horn	Clean air horn holes with solvent and
		holes are partially or totally plugged.	soft brush. See page 15.

Pattern pushed to one side, same		Air horn holes partially or totally	Clean air horn holes with solvent and
side of air cap gets dirty.		plugged.	soft brush. See page 15.

311052E

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Contents Automatic G40 Air-Assisted Spray Guns Related Manuals ContentsG40 RAC Spray Gun, 288053, Series a ModelsG40 Standard Spray Gun, 288046, Series a G40 Plastic Seat Spray Gun, 288044, Series BEquipment Misuse Hazard Pressurized Equipment Hazard Circulating System InstallationVentilate Spray Booth Configure Gun and ManifoldGround System Install Air FittingsRetrofit Adapter Plate Mount GunReciprocating Arm Rod Mount Stationary SupportConnect Air Line Side Mounted Manifold Ports Connect Fluid LineSetup Adjust Spray Pattern Pressure Relief ProcedureOperation No air Too little air Correct amount Air Apply FluidIncorrect CorrectDaily Gun Care MaintenanceFlushing and Cleaning General System MaintenanceTurn off the solvent supply General Troubleshooting TroubleshootingProblem Cause Solution Problem Cause Solution Spray Pattern Troubleshooting Disassembly ServiceItems Needed for Service TI8173b Cutaway View Part No Gun Shown Reassembly Diffuser Seat ReplacementParts AA RAC Assembly included with Model 288053 onlyPart Ref. No. No Description Qty PartsNorth America and International Manifold Description QtyManifold with Bottom Fluid Ports Part No. Description QtyPart No C343 Side Fluid Ports and Fan Adjustment ValveRING, Ptfe 311052E AAP Series Precision Spray Tips AAP Series Tip and Air Cap Selection ChartsTypical Air Application Tip Used With Consumption For use with G40 RAC Housing LTX Series RAC Tip Selection ChartsLTX Reverse-A-Clean RAC Spray Tips FFT Fine Finish RAC Spray Tips RAC Switch TipsWRX Wide RAC Spray Tips Accessories Plastic Seat Repair Kit Ultimate Gun Cleaning Kit 15C161Grounding Clamp and Wire In-line Fluid Filter Air Cap Seal KitDimensions Mounting Hole Layout Gun with Rear Port Manifold Rear Port ManifoldModels 3/16 in. ball Cylinder Air Pressure Fluid Pressure Technical DataTriggering Speed Sound Data dBaGraco Information Graco Standard Warranty