Graco Inc 3500WB, 308584, 222700 manual Check the Electrical Grounding, Installation

Page 15

Check the Electrical Grounding

Installation

Check the Electrical Grounding

1.Have a qualified electrician check the electrical grounding continuity of the spray gun and air hose.

2.Make sure the red Graco electrically conductive air hose (EE) is connected to the gun and the hose ground wire is connected to a true earth ground. See Fig. 7.

3.The air and fluid supplies to the fluid hose must be turned off and the fluid hose must not have any fluid in it when checking the continuity.

4.Turn the gun ES ON-OFF lever (DD) to OFF.

5.Measure the resistance between the gun handle (AA) and a true earth ground (BB) with an ohmme- ter (CC). Resistance should not exceed 100 ohms.

6.If the resistance is greater than 100 ohms, check the tightness of the ground connections, and be sure the air hose ground wire is connected to a true earth ground. If the resistance is still too high, replace the air hose.

KEY- Fig. 7

AAGun Handle

BBTrue Earth Ground

CCOhmmeter

DDES ON-OFF Lever

EEGraco Electrically Conductive Air Hose

EE

DD

AA

CC

Fig. 7

BB

05150B

308584 15

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Contents Part No. 222700, Series C INSTRUCTIONS-PARTS LIST308584 100 psi 0.7 MPa, 7 bar Maximum Working PressureCaution Symbol Table of ContentsSymbols Warning SymbolELECTRIC SHOCK HAZARD FIRE AND EXPLOSION HAZARD PRESSURIZED EQUIPMENT HAZARDWarnings are continued on the next page TOXIC FLUID HAZARD EQUIPMENT MISUSE HAZARDRefer to Fig. 1, page IntroductionSpraying Waterborne Fluids Electrostatically Operating the ElectrostaticsB A C H2O PRO Voltage Block connection shown Graco Waterborne Fluid Hose purchased separatelyD Inner Hose Layer EE is a PTFE tube D Conductive Hose Layer DD covers the PTFE tubeWarning Signs InstallationInstalling the System Ventilate the Spray BoothM G F NH R B A E D P C Consult your isolation system manual for other configurationsPRO 3500wb Gun shown with the Graco H2O PRO Batch System T S N K LConnect the Exhaust Tube Install the Air Line AccessoriesInstall the Fluid LIne Accessories Connect the Air LineFilter the Fluid Connect the Fluid HoseContinued on the next page Connect the Fluid Hose continued H2O PRO Voltage Blockconnection shown FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Ground the SystemCheck the Electrical Grounding Fluid Voltage Discharge and Grounding Procedure Pressure Relief ProcedureOperation Selecting a Fluid Nozzle and Air Cap Operating ChecklistOperating the Spray Gun FIRE AND EXPLOSION HAZARDCOMPONENT RUPTURE HAZARD Fine Adjustments of the Spray Gun Atomizing Air Valve AdjustmentMaintenance Daily Care and CleaningShutdown Equipment needed Clean the Air Cap and Fluid NozzleProcedure Flush the Spray GunWaterborne Fluid Hose TroubleshootingVoltage Loss Troubleshooting Spray GunTests Voltage Loss Troubleshooting continuedCause Electrical TroubleshootingProblem SolutionSpray Pattern Troubleshooting Gun Operation Troubleshooting Poor Electrostatic Wrap TroubleshootingGun Operation Troubleshooting continued Test Gun Resistance Electrical TestsTest Resistor Stud Resistance Test Power Supply ResistanceTools Included with the Gun ServicePrepare the Gun for Service Air Cap/Nozzle/Resistor Stud ReplacementInstallation Air Cap/Nozzle/Resistor Stud Replacement continuedElectrode Needle Replacement Where Preventative MaintenanceIf installing the complete fluid rod assembly, go to step 11, page Fluid Packing Rod Removal and RepairFluid Packing Rod Removal and Repair continued DETAIL Fan Air Adjustment Valve RepairFluid Adjustment Assembly Repair If installing the complete valve, go to stepFluid Adjustment Assembly Repair continued Air Trigger Valve Repair Apply a very light coat of lubricant to the o-rings 41 Atomizing Air Valve Repair ES ON-OFF Valve Repair MOVING PARTS HAZARD05363B Barrel Removal Power Supply Replacement Apply a very light coat of lubricant to the o-rings 37a Do not expose the gasket 18a to solvents Turbine Alternator Replacement Barrel Installation05158B Measurements, inches mm Graco Waterborne Fluid Hose RepairPRO 3500SC Gun Disassembly NOTE Keep all the following parts for reassemblyPRO 3500sc Gun Conversion Installing the Fluid Needle Assembly 10. Tighten the nut 78* onto the ferrule housing See Detail A Spray Gun PartsDescription EQUIPMENT MISUSE HAZARDPart No. 222700, Series C Model PRO 3500wb Spray Gun Y Replacement Warning signs are available at no cost100 psi 0.7 MPa, 7 bar Maximum Working Pressure AccessoriesUse Only Genuine Graco Parts and Accessories Waterborne Fluid Hose AssemblyGun High Voltage Probe & Meter For use in the Fluid Voltage Discharge and Ground- ing ProcedureManual Change Summary Snap Ring PliersPage Technical Data CategoryData EQUIPMENT NOT COVERED BY GRACO WARRANTY The Graco Warranty and DisclaimersGraco Phone Number WARRANTY