Graco Inc 222700, 3500WB, 308584 manual ES ON-OFF Valve Repair, Moving Parts Hazard, Service, 05363B

Page 38
ES ON-OFF Valve Repair

Service

ES ON-OFF Valve Repair

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

2.Loosen the set screw (24) with the 2 mm hex key (69). Remove the lever (26) from the valve. See Fig. 24.

MOVING PARTS HAZARD WARNING

MOVING PARTS HAZARD

To reduce the risk of an eye injury, wear safety glasses when removing or install- ing the retaining ring (47) as the retain- ing ring could slip off the tool when com- pressed.

3.Use internal snap ring pliers (Graco part no. 110090) to remove the retaining ring (47) from the handle. Align the holes in the retaining ring with the flat on the spacer (32) to ease assembly and disassembly.

4.Remove the valve body (38) from the handle; be careful not to drop the regulator disk (46) and spacer (32).

5.Clean and inspect the parts for damage. Replace parts if necessary. Lightly lubricate the o-ring (36) with petroleum jelly.

05363B CAUTION

Do not over-lubricate parts. Excessive lubricant on the o-ring (36) can be pushed into the gun air pas- sage and blemish the finish on the workpiece.

6.Install the regulator disk (46) in the valve (38) with its bevelled side facing toward the valve.

Manual background CAUTION

Be sure the regulator disk (46) is installed correctly. A missing or incorrectly installed regulator disc can cause severe damage to the power supply turbine.

7.Install the valve (38) with the regulator disc (46) and o-ring (36) into the gun handle. Install the spacer (32) on the valve.

8.Install the retaining ring (47) into the groove in the handle.

Manual background WARNING

MOVING PARTS HAZARD

Always make sure that the retaining ring

Manual backgroundManual background (47) is engaged in the groove in the gun handle when installing the ES ON-OFF valve. If the retaining ring is missing or improperly

installed, the valve assembly can be propelled out of the gun when air pressure is applied and cause serious injury.

9.Install the lever (26) and tighten the set screw (24).

Apply a very light coat of lubricant to the o-ring (36).

Bevelled side of the regulator disk (46) toward the valve (38).

26

47

 36

24

32

38

 46

05363B

Fig. 24

38 308584

Image 38
Contents 100 psi 0.7 MPa, 7 bar Maximum Working Pressure INSTRUCTIONS-PARTS LIST308584 Part No. 222700, Series CWarning Symbol Table of ContentsSymbols Caution SymbolELECTRIC SHOCK HAZARD Warnings are continued on the next page FIRE AND EXPLOSION HAZARDPRESSURIZED EQUIPMENT HAZARD EQUIPMENT MISUSE HAZARD TOXIC FLUID HAZARDOperating the Electrostatics IntroductionSpraying Waterborne Fluids Electrostatically Refer to Fig. 1, pageB A C D Conductive Hose Layer DD covers the PTFE tube Graco Waterborne Fluid Hose purchased separatelyD Inner Hose Layer EE is a PTFE tube H2O PRO Voltage Block connection shownVentilate the Spray Booth InstallationInstalling the System Warning SignsT S N K L Consult your isolation system manual for other configurationsPRO 3500wb Gun shown with the Graco H2O PRO Batch System M G F NH R B A E D P CConnect the Air Line Install the Air Line AccessoriesInstall the Fluid LIne Accessories Connect the Exhaust TubeContinued on the next page Filter the FluidConnect the Fluid Hose connection shown Connect the Fluid Hose continuedH2O PRO Voltage Block Ground the System FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARDCheck the Electrical Grounding Operation Fluid Voltage Discharge and Grounding ProcedurePressure Relief Procedure Operating Checklist Selecting a Fluid Nozzle and Air CapCOMPONENT RUPTURE HAZARD Operating the Spray GunFIRE AND EXPLOSION HAZARD Atomizing Air Valve Adjustment Fine Adjustments of the Spray GunShutdown MaintenanceDaily Care and Cleaning Flush the Spray Gun Clean the Air Cap and Fluid NozzleProcedure Equipment neededSpray Gun TroubleshootingVoltage Loss Troubleshooting Waterborne Fluid HoseVoltage Loss Troubleshooting continued TestsSolution Electrical TroubleshootingProblem CauseSpray Pattern Troubleshooting Poor Electrostatic Wrap Troubleshooting Gun Operation TroubleshootingGun Operation Troubleshooting continued Electrical Tests Test Gun ResistanceTest Power Supply Resistance Test Resistor Stud ResistanceAir Cap/Nozzle/Resistor Stud Replacement ServicePrepare the Gun for Service Tools Included with the GunAir Cap/Nozzle/Resistor Stud Replacement continued InstallationElectrode Needle Replacement Fluid Packing Rod Removal and Repair Preventative MaintenanceIf installing the complete fluid rod assembly, go to step 11, page WhereFluid Packing Rod Removal and Repair continued If installing the complete valve, go to step Fan Air Adjustment Valve RepairFluid Adjustment Assembly Repair DETAIL 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 Graco Waterborne Fluid Hose Repair Measurements, inches mmPRO 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 Spray Gun Parts See Detail AY Replacement Warning signs are available at no cost EQUIPMENT MISUSE HAZARDPart No. 222700, Series C Model PRO 3500wb Spray Gun DescriptionWaterborne Fluid Hose Assembly AccessoriesUse Only Genuine Graco Parts and Accessories 100 psi 0.7 MPa, 7 bar Maximum Working PressureSnap Ring Pliers For use in the Fluid Voltage Discharge and Ground- ing ProcedureManual Change Summary Gun High Voltage Probe & MeterPage Data Technical DataCategory WARRANTY The Graco Warranty and DisclaimersGraco Phone Number EQUIPMENT NOT COVERED BY GRACO WARRANTY