Graco PRO Xs4 AA manual Repair, Pressure Relief Procedure

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Repair

Repair

Pressure Relief Procedure

WARNING

Fluid Injection Hazard

The system pressure must be manually

relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin

and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or electric shock, follow the Pressure Relief Procedure when- ever you:

•are instructed to relieve the pressure

•stop spraying

•check or repair any of the system equipment

3.Turn off the air bleed valves to the fluid source and to the gun.

ti1289a

4.Unlock the trigger.

ti1406a

5.Trigger the gun into a grounded metal waste con- tainer to relieve the fluid pressure.

ti1341a

6.Lock the trigger.

• or install or clean the spray tip.

ti1356a

1.Turn the ES ON/OFF valve OFF.

I ES O

ti1337a

2.Lock the trigger.

ti1356a

7.Open the pump drain valve and all other fluid drain valves in the system, having a waste container ready to catch the drainage. Leave the drain valve(s) open until you are ready to spray again.

ti1290a

8.If the nozzle or hose is completely clogged or pres- sure is not fully relieved, slowly loosen the hose end coupling. Now clear the nozzle or hose.

t

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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 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 Resistance Spray Pattern Troubleshooting Troubleshooting Problem 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 ReplacementTurbine 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