Graco Inc 312900C, 247936, 247937 Spray Pattern Troubleshooting, Electric Shock Hazard

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Spray Pattern Troubleshooting

Spray Pattern Troubleshooting

Electric Shock Hazard

Installing and servicing this equipment requires access to parts which may cause an electric shock or other serious injury if the work is not performed prop- erly. Do not install or repair this equipment unless you are trained and qualified.

Pressurized Equipment Hazard

To reduce the risk of an injury, follow the Pressure Relief procedure on page 19 whenever you are instructed to relieve the pressure.

NOTE: Check all possible remedies in the Troubleshoot- ing Chart before disassembling the gun.

NOTE: Some spray pattern problems are caused by the improper balance between air and fluid.

Problem	Cause	Solution

Fluttering or spitting spray.	No fluid.	Refill supply.

	Loose, dirty, damaged nozzle/seat.	Clean or replace nozzle, page 28.

	Air in fluid supply.	Check fluid source. Refill.
Improper spray pattern.	Damaged nozzle or air cap.	Replace, page 28.
	Fluid buildup on air cap or nozzle.	See Maintenance on page 20.
	Fan air pressure too high.	Decrease.
	Fluid too thin.	Increase viscosity.
	Fluid pressure too low.	Increase.
	Fan air pressure too low.	Increase.

	Fluid too thick.	Reduce viscosity.
	Too much fluid.	Decrease flow.

Streaks.	Did not apply 50% overlap.	Overlap strokes 50%.

	Dirty or damaged air cap.	Clean or replace, page 28.

312900C

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Contents II 2 G EEx 0.24 mJ PRO Xs Waterborne Air Spray GunTable of Contents FIRE, EXPLOSION, and Electric Shock Hazard Equipment Misuse Hazard How the Electrostatic Air Spray Gun Works OverviewSmart Model 247937 Standard Model 247936Air swivel inlet. Left-hand thread Fan air adjustment valve. Adjusts fan size ES indicator 247936 only. Green when ES is on Install the System InstallationVentilate the Spray Booth Typical Installation Key Connect the Charging Probe Connect the Air LineGrounded Air Supply Hose Connect the Fluid Line Connect the Exhaust TubeFilter the Fluid Orifice Size Select a Fluid Nozzle and Air CapFire, Explosion, and Electric Shock Hazard GroundingCheck Fluid Resistivity Check Electrical GroundingPrepare to Paint Check Fluid ViscosityTurn ES ON/OFF switch on Flush Shutdown Pressure ReliefPressurized Equipment Hazard Clean Gun Daily MaintenanceDaily System Care Electric Shock Hazard Electrical TroubleshootingSee Test Total Gun Resistance on See Check Electrical Grounding onTest Gun Resistance Electrical TestsTest Total Gun Resistance Test Charging Probe ResistanceTest Barrel Resistance Test Power Supply ResistanceSpray Pattern Troubleshooting Gun Operation Troubleshooting Prepare the Gun for Repair Gun RepairReplace Fluid Needle Replace Air Cap/NozzleRemove Fluid Packing Remove Fluid PackingPacking Rod Repair Packing RodRemove Barrel Install BarrelPower Supply Remove and Replace Power SupplyRemove and Replace Turbine Alternator Repair Fan Air Adjustment ValveRepair Air Valve Repair Fluid Adjustment ValveRepair ES ON/OFF Valve Remove and Replace Atomizing Air Restrictor ValvePart No 60 kV Electrostatic Gun, Series a Standard model PartsRef. No Multi-tool Part No 60 kV Electrostatic Gun, Series a Smart model Ref. No Packing Rod Ref. No Alternator Ref. No Fan Adjustment ValveRef. No ES ON/OFF Valve Smart Model controlsDescription Qty Description Qty Air Line Accessories AccessoriesFluid Line Accessories Miscellaneous Accessories Gun AccessoriesCategory Data Technical DataGraco Information Graco Warranty