Graco Inc 222700 manual Fan Air Adjustment Valve Repair, Fluid Adjustment Assembly Repair, Detail

Page 35

Fan Air Adjustment Valve Repair

Service

Fan Air Adjustment Valve Repair

NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts.

1.Prepare the gun for service as instructed on page 30.

2.Place a wrench on the flats of the valve housing and remove it from the handle. See Fig. 21.

3.If the parts are purchased separately, install them as instructed in steps 4 to 8.

If installing the complete valve, go to step 8.

4.Remove the retaining ring (43b). Rotate the air adjusting screw (43c) counterclockwise until it is disengaged from the valve housing threads (43d). Pull the adjusting screw out of the valve housing.

5.Clean all the parts and inspect them for wear or damage.

6.Install the o-rings (43e) on the adjusting screw (43c). Lubricate the o-rings and the adjusting screw threads with petroleum jelly.

7.Install the adjusting screw (43c) into the valve housing (43d), and install the retaining ring (43b) on the adjusting screw (43c). Back the adjusting screw out of the valve housing until it bottoms out against the retaining ring.

8.Apply PTFE paste to the threads of the valve housing (43d) and install it in the handle. Torque the housing to 10 to 12 in-lb (1.1 to 1.4 NSm).

Apply a very light coat of lubricant to the o-rings (43e) and adjusting screw (43c) threads.

Apply PTFE paste to the valve housing (43d) threads and tighten the housing into the handle to 10–12 in-lb (1.1–1.4 NSm).

DETAIL

43d

43b

43c

43e

43

05161B

Fig. 21

Fluid Adjustment Assembly Repair

1.Prepare the gun for service as instructed on page 30.

2.Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 22, page 36.

3.Turn the stem (45a) fully clockwise and remove the sleeve stop (45e).

4.To completely disassemble the fluid adjustment assembly, the sleeve stop (45e) must be assembled back on to the stem (45a). Turn the stem until the sleeve is protruding about 0.4 inches (10 mm).

Continued on the next page.

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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 Warnings are continued on the next page FIRE AND EXPLOSION HAZARDPRESSURIZED EQUIPMENT HAZARD 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 LineContinued on the next page Filter the FluidConnect the Fluid Hose connection shown Connect the Fluid Hose continuedH2O PRO Voltage Block FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Ground the SystemCheck the Electrical Grounding Operation Fluid Voltage Discharge and Grounding ProcedurePressure Relief Procedure Selecting a Fluid Nozzle and Air Cap Operating ChecklistCOMPONENT RUPTURE HAZARD Operating the Spray GunFIRE AND EXPLOSION HAZARD Fine Adjustments of the Spray Gun Atomizing Air Valve AdjustmentShutdown MaintenanceDaily Care and Cleaning 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 step Apply a very light coat of lubricant to the o-rings 41 Fluid Adjustment Assembly Repair continuedAir Trigger Valve Repair Atomizing Air Valve Repair 05363B ES ON-OFF Valve RepairMOVING PARTS HAZARD Barrel Removal Do not expose the gasket 18a to solvents Power Supply Replacement Apply a very light coat of lubricant to the o-rings 37a 05158B Turbine Alternator ReplacementBarrel Installation Measurements, inches mm Graco Waterborne Fluid Hose RepairPRO 3500sc Gun Conversion PRO 3500SC Gun DisassemblyNOTE Keep all the following parts for reassembly 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 Data Technical DataCategory EQUIPMENT NOT COVERED BY GRACO WARRANTY The Graco Warranty and DisclaimersGraco Phone Number WARRANTY