Graco Inc PRO4000, 307-638, 218-026 manual Check the Electrical Grounding See Fig

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INSTALLATION

Check the Electrical Grounding (See Fig 1)

WARNING

Proper electrical grounding of every part of your system is essential. For your safety, read the warning section, FIRE OR EXPLOSION HAZARD, on page 5. Ground the system as explained there. Then check your system as explained below.

1.Turn the ES On±Off valve to OFF. See Fig 2 for the location of the valve lever.

2.Turn off the air and fluid supply to the gun.

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

a.With the electrically conductive air hose (BB) connected (see Connect the Air Line, page 7) and properly grounded, use a megohmmeter

(AA)(shown in ACCESSORIES section) to measure the resistance between the gun handle

(Y)and a true earth ground (Z). Use an applied voltage of 500 minimum to 1000 volts maximum. See Fig 1.

b.If the resistance is greater than 2 megohms, check the tightness of the ground connections, and be sure the air supply hose ground wire is connected to a true earth ground. If the resis- tance is still greater than 2 megohms, replace the air supply hose.

KEY

YGun Handle

ZTrue Earth Ground

AAOhmmeter

BBGrounded Air Hose

Z

AA

BB

Y

Fig 1

KEY

YES Valve Lever

ZFluid Adjusting Knob

AAFan Adjusting Knob

BBES Indicator Lights

Y

BB

Z

AA

Fig 2

8￿3￿7￿638

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Contents Manual MID±RANGE Electrostatic Rev. AEPart Number 218±026, Series E Read and Retain for Reference Table of Contents TermsHazardous Fluid Hazard Hose SafetyEquipment Misuse Hazard Flushing and Cleaning Safety Ventilate the Spray BoothFire or Explosion Hazard HOW the Electrostatic AIR Spray GUN WorksKEY Typical InstallationNON±HAZARDOUS Area Hazardous Area Connect the Fluid Line Refer to the Typical InstallationVentilate the Spray Booth Check the Electrical Grounding See Fig Operating Checklist OperationFilter the Fluid Spraying OperationInstall the Fluid Nozzle and Air Cap Adjust the Spray PatternMaintenance Daily Care and CleaningClean the Air Cap and Fluid Nozzle Follow the Pressure Relief Procedure Warning onFlush the Spray Gun Spray Pattern Troubleshooting Chart Problem Cause Solution Improper Spray PatternGUN Operation Troubleshooting Chart Problem Cause SolutionElectrical Troubleshooting Chart Test Power Supply Resistance Test Gun ResistanceTest Resistor Stud Resistance Gun Disassembly Electrode ReplacementResistor Stud Replacement Fluid Needle Packing Replacement Barrel RemovalService 45d45f 45c3c 2 3a Power Cartridge Replacement18b Turbine Alternator Removal Fan Air Valve Replacement Air Valve ReplacementES ON±OFF Valve Removal & Replacement Fluid Adjusting Screw ReplacementMuffler and Check Valve Replacement KEY81Ref No Power Cartridge Parts DrawingRef No 59, Tool Kit Includes items 59a±59h 59f 59e 59d 59g 59c 59b59aParts List 218±014 HANDLE, gun Includes item 2a179±400 18b 186±127Repair Kits Technical Data Service InformationHOW to Order Replacement Parts Assembly Changed Status No. Part No NameAccessories Filter AIR or Paint 202±271 218±123 Electrostatic System218±124 Electrostatic System PRO4000H GUN Electrostatic High Conductivity KIT 222±029Graco PRO4000 Warranty and Disclaimers Important Phone Numbers