Graco Inc 307-712, PRO 5000, 218-745 To Clean or Change Air Cap and Fluid Nozzle, Equipment needed

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MAINTENANCE

To Clean or Change Air Cap and Fluid Nozzle

CAUTION

Do not use metal tools to clean the air cap holes as this may scratch them, and make sure the elec- trode wire is not damaged. Scratches in the air cap holes or a damaged electrode wire can distort the spray pattern.

Equipment needed:

Soft bristle brush (supplied). Fluid nozzle wrench (supplied).

Solvent compatible with fluid being sprayed.

Procedure:

1.Follow the Pressure Relief Procedure Warning on page 9.

2.Remove the air cap assembly (BB). See Fig 6.

3.Turn the locking pin (81) to the unlocked position.

4.Squeeze the gun trigger and remove the fluid nozzle

(15)with the fluid nozzle wrench (66g) supplied. Make sure the front of the gun is pointed down. See Fig 6.

5.Use the soft bristle brush (66a) supplied and solvent to clean the air cap, fluid nozzle, and front part of the gun.

6.Squeeze the gun trigger and screw the fluid nozzle back into the gun. Tighten the nozzle securely with the wrench (66g) supplied. Torque the fluid nozzle to 1.1±1.4 NSm (10±12 in±lb). See Fig 6. Turn the lock- ing pin to the locked position.

7.Carefully reinstall the air cap assembly. Avoid bend- ing the electrode (CC).

8.Tighten the retaining nut so it is snug. If the nut is tight enough, you will feel resistance when turning the air cap. If too tight, the spray pattern will be distorted.

KEY

15 Fluid Nozzle

BB

BBAir Cap Assembly

81 Locking Pin

DETAILDETAIL

15

Locked

Unlocked

Position

Position

 

8181

Fig 5

KEY

CCElectrode

15 Fluid Nozzle

16 Air Cap Assembly

66g Wrench

16 CC

15

Torque to 1.1±1.4 NSm (10±12 in±lb)

66g

Fig 6

 

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Contents Automatic MID-RANGE Electrostatic Rev PPart Number 218±745, Series B This manual contains Important  Table of Contents TermsHose Safety Equipment Misuse HazardHazardous Fluid Hazard Flushing and Cleaning Safety Ventilate the Spray BoothFire or Explosion Hazard HOW the Electrostatic AIR Spray GUN WorksTypical Installation Ventilate the Spray BoothNON±HAZARDOUS Area KEY Hazardous AreaInstallation Mount the GunInstalling Optional Remote Fan Air Adapter Check the Electrical GroundingOperating Checklist OperationFilter the Fluid Spraying OperationAdjust the Spray Pattern AccessoriesMaintenance Daily Care and CleaningFlush the Spray Gun 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 Service Gun DisassemblyGun Assembly Note 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 QtyTechnical Data Service InformationHOW to Order Replacement Parts Assembly Changed Status No. Part No NameAccessories High Volume AIR Regulator 206±199Grounded AIR Supply Hose AIR Hose Adapter 185±493Remote Switch & Signal Light 728±386 Control Panel 218±394 Filter AIR or Paint 202±271Electrostatic System 231±035 Electrostatic System 231±036Graco Warranty and Disclaimers WarrantyImportant Phone Numbers To you 1±800±328±0211 Toll Free