Graco PRO Xs4 AA manual Repair

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Repair

CAUTION

To avoid damaging the seat housing and gun barrel, never over-tighten the seat housing. Over-tightening may result in improper fluid shut-off.

5.Trigger the gun and install the gray-colored seat housing (2). Tighten until snug, then 1/4 turn more.

CAUTION

To avoid damaging the tip guard (4), orientate the air cap (9a) before tightening the retaining ring (27). Do not turn the cap when the retaining ring is tight.

6.Assemble the spray tip (3), air cap (9a), and tip guard (4). Make sure the electrode (9b) is not dam- aged or missing. Install the air cap assembly with the retaining ring (27). The u-cup (27a) lips must face forward.

7.Test gun resistance, page 19.

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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 Fluid Injection Hazard Toxic Fluid HazardEquipment Misuse Hazard Introduction How the Electrostatic AA Spray Gun WorksGun Overview = on = OFFStandard Gun Smart GunInstallation Install the SystemVentilate the Spray Booth Flammable or Toxic Vapor HazardNon-Hazardous Area Hazardous AreaConnect the Exhaust Tube Connect the Air LineElectric Shock Hazard Connect the Fluid Line Select a Spray TipGrounding Check Electrical Grounding Check Gun GroundingCheck Fluid Resistivity Check Fluid ViscosityLow Voltage Adjustment Smart Guns Only OperationMaintenance Flush the Spray GunTi1465a Electrical Tests Test Gun ResistanceTest Power Supply Resistance Test Power Supply ResistanceTest Barrel Resistance Test Barrel ResistanceSpray Pattern Troubleshooting TroubleshootingProblem Cause Solution Gun Operation Troubleshooting Electrical Troubleshooting Pressure Relief Procedure RepairPrepare the Gun for Service Tools NeededTip Guard, Air Cap, Spray Tip, or Seat Housing Replacement Tip Guard, Air Cap, and Spray Tip Replace- mentRepair Electrode Replacement Electrode ReplacementFluid Tube Replacement Fluid Filter RemovalFluid Needle Replacement Spring Cap and SpringsBarrel Installation Barrel RemovalPower Supply Removal and Replacement Power Supply and Turbine AlternatorTurbine Alternator Removal and Replacement Atomizing Air Adjustment Valve Repair Atomizing Air Adjustment ValveAir Valve Repair Air ValveES ON/OFF Valve Repair ES ON/OFF ValveParts Part No 85 kV Electrostatic Gun, Series a itemsRef. No Alternator Ref. No Atomizing Air Adjustment ValveRef. No ES ON/OFF Valve Description Qty AIR CAPIncluded in Air Seal Repair Kit Adjustment valve 20, and ES ON/OFF valve 53 RefRef. No Alternator Description Qty SWITCH, ES HI/LO Air Line Accessories AccessoriesFluid Line Accessories Gun Accessories Miscellaneous AccessoriesSpray Tip Selection Chart Fan Width at Orifice SizeTechnical Data Category DataGraco Phone Numbers Graco Standard WarrantyToll Free