Graco Inc 307-712, PRO 5000 Service, Gun Disassembly, Gun Assembly Note, Electrode Replacement

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SERVICE

Gun Disassembly

WARNING

Installing and servicing this equipment requires access to parts which may cause electric shock or other serious bodily injury if the work is not per- formed properly. Do not install or service this equipment unless you are trained and qualified.

Follow the Pressure Relief Procedure Warning, page 9, before servicing the gun or any part of the system. Disconnect the fluid hose from the gun.

NOTE: Check all possible remedies in the Troubleshooting Charts before disassembling the gun.

CAUTION

If the plastic parts of the gun must be held se- curely, ALWAYS clamp them in padded vice jaws to prevent damage to the parts.

ALWAYS lubricate o±rings and seals with petro- leum jelly.

ALWAYS remove gun from worksite for service or repair. Service or repair area must be clean.

Flush the gun as described under Flush the Spray Gun. Follow the Pressure Relief Procedure Warning on page 9. Disconnect the air and fluid line from the gun.

Gun Assembly Note

Whenever you are tightening plastic parts where there is no torque specified in the instructions, tighten the parts finger-tight and then retighten with a wrench 1/4 to 1/2 turn.

Electrode Replacement

1.Remove the air cap assembly and fluid nozzle as de- scribed in To Clean or Change Air Cap and Fluid Nozzle.

2.Unscrew and remove the electrode (14) with the wrench (66c) supplied. See Fig 10. If the needle shaft assembly (9) turns while trying to loosen the elec- trode, hold the needle shaft assembly nut with a small wrench.

3.Install the new electrode (14) with the wrench (66c). Do not over tighten.

CAUTION

To avoid damaging the plastic threads, be very careful when installing the electrode.

4.Reinstall fluid nozzle and air cap assembly as described in To Clean or Change Air Cap and Fluid Nozzle.

KEY

9Fluid Needle Shaft Assembly

66c Wrench

66c

9

Fig 10

￿8 ￿￿￿￿￿￿￿

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Contents Part Number 218±745, Series B Automatic MID-RANGE ElectrostaticRev P This manual contains Important  Table of Contents TermsHose Safety Equipment Misuse HazardHazardous Fluid Hazard Fire or Explosion Hazard Flushing and Cleaning SafetyVentilate the Spray Booth HOW the Electrostatic AIR Spray GUN WorksNON±HAZARDOUS Area KEY Typical InstallationVentilate the Spray Booth Hazardous AreaInstallation Mount the GunInstalling Optional Remote Fan Air Adapter Check the Electrical GroundingFilter the Fluid Operating ChecklistOperation Spraying OperationAdjust the Spray Pattern AccessoriesFlush the Spray Gun MaintenanceDaily Care and Cleaning GUN in SolventTo Clean or Change Air Cap and Fluid Nozzle Equipment neededSpray Pattern Troubleshooting Chart Problem Cause Solution Improper Spray PatternGUN Operation Troubleshooting Chart Problem Cause SolutionElectrical Troubleshooting Chart See Check the Electrical GroundingTest Power Supply Resistance Electrical TestsTest Gun Resistance Test Resistor Stud Resistance Gun Assembly Note ServiceGun Disassembly Electrode ReplacementResistor Stud Replacement To install the resistor studFluid Needle Packing Replacement Barrel Removal66b Service Power Cartridge Replacement Turbine Alternator RemovalFan Air Valve Replacement Piston Removal and Repair Disc Regulator ORing Replacement Ref No Power Cartridge Ref No 66, Tool KitDetail a Parts List Old/New Style Resistor Stud and ElectrodeKits Description QtyHOW to Order Replacement Parts Technical DataService Information Assembly Changed Status No. Part No NameGrounded AIR Supply Hose AccessoriesHigh Volume AIR Regulator 206±199 AIR Hose Adapter 185±493Electrostatic System 231±035 Remote Switch & Signal Light 728±386 Control Panel 218±394Filter AIR or Paint 202±271 Electrostatic System 231±036Important Phone Numbers Graco Warranty and DisclaimersWarranty To you 1±800±328±0211 Toll Free