Graco PRO Xs4 AA manual ES ON/OFF Valve Repair

Page 37

ES ON/OFF Valve Repair

1.Prepare the gun for service, page 26.

2.Loosen the screw (48). Remove the valve.

3.Lubricate the o-rings (22a* and 22b*) with non-sili- cone grease, Part No. 111265. Do not over-lubricate.

Repair

4.Clean and inspect parts for damage. Replace if nec- essary.

NOTE: The protrusion on the retainer plate (22d) must point upward.

5.Reinstall the valve. Torque the screw (48) to 15-25 in-lb (1.7-2.8 N•m).

CAUTION

Do not over-lubricate parts. Excessive lubricant on the o-rings can be pushed into the gun air passage and blemish the finish on the workpiece.

22d

22e

22b*

22c

22a*

TI1488A

22f 22g

48

Fig. 20. ES ON/OFF Valve

309295

37

Image 37

Contents This manual contains important warnings and information Instructions Parts List 309295Standard Model Table of Contents List of Models SymbolsModel Description Operation Fire, Explosion, and Electric Shock Hazard Toxic Fluid Hazard Fluid Injection HazardEquipment Misuse Hazard How the Electrostatic AA Spray Gun Works Introduction= on = OFF Gun OverviewStandard Gun Smart GunInstall the System InstallationVentilate the Spray Booth Flammable or Toxic Vapor HazardHazardous Area Non-Hazardous AreaConnect the Exhaust Tube Connect the Air LineElectric Shock Hazard Select a Spray Tip Connect the Fluid LineGrounding Check Gun Grounding Check Electrical GroundingCheck Fluid Viscosity Check Fluid ResistivityOperation Low Voltage Adjustment Smart Guns OnlyFlush the Spray Gun MaintenanceTi1465a Test Gun Resistance Electrical TestsTest Power Supply Resistance Test Power Supply ResistanceTest Barrel Resistance Test Barrel ResistanceSpray Pattern Troubleshooting TroubleshootingProblem Cause Solution Gun Operation Troubleshooting Electrical Troubleshooting Repair Pressure Relief ProcedureTools Needed Prepare the Gun for ServiceTip Guard, Air Cap, and Spray Tip Replace- ment Tip Guard, Air Cap, Spray Tip, or Seat Housing ReplacementRepair Electrode Replacement Electrode ReplacementFluid Filter Removal Fluid Tube ReplacementSpring Cap and Springs Fluid Needle ReplacementBarrel Removal Barrel InstallationPower Supply and Turbine Alternator Power Supply Removal and Replacement Turbine Alternator Removal and Replacement Atomizing Air Adjustment Valve Atomizing Air Adjustment Valve RepairAir Valve Air Valve RepairES ON/OFF Valve ES ON/OFF Valve RepairPart No 85 kV Electrostatic Gun, Series a items PartsRef. No Alternator Ref. No Atomizing Air Adjustment ValveRef. No ES ON/OFF Valve AIR CAP Description QtyIncluded in Air Seal Repair Kit 53 Ref Adjustment valve 20, and ES ON/OFF valveRef. No Alternator Description Qty SWITCH, ES HI/LO Air Line Accessories AccessoriesFluid Line Accessories Miscellaneous Accessories Gun AccessoriesFan Width at Orifice Size Spray Tip Selection ChartCategory Data Technical DataGraco Phone Numbers Graco Standard WarrantyToll Free