Graco Inc PRO4000, 307-638, 218-026 manual Test Resistor Stud Resistance

Page 17

ELECTRICAL￿ TESTS

Test￿ Resistor￿ Stud￿ Resistance

KEY

 

 

Insert￿ a￿ conductive￿ rod￿ ￿FF￿￿ into￿ the￿ gun￿ barrel￿A ￿re/Megohmmeter

 

 

FF

Conductive￿ Rod

 

moved￿ for￿ the￿ power￿ supply￿ test￿￿ and￿ against￿ the￿ metal

A

contact￿ ￿GG￿￿ in￿ the￿ front￿ of￿ the￿ barrel￿￿ See￿ Fig￿9￿

GG

Metal￿ Contact

 

12

Electrode

 

￿8 Gun￿ Barrel

Measure￿ the￿ resistance￿ between￿ the￿ conductive￿ rod

￿FF￿￿ and￿ the￿ gun￿ electrode￿ ￿￿2￿￿￿ The￿ resistance￿ should be￿ 2￿￿3￿￿ megohms￿￿ If￿ the￿ resistance￿ is￿ correct￿￿ refer￿ to the￿Electrical￿ Troubleshooting￿ Chart￿ for￿ other￿ possi/

ble￿ causes￿ of￿ poor￿ performance￿￿ or￿ contact￿ the￿ nearest authorized￿ service￿ agency￿

If￿ the￿ resistance￿ is￿ outside￿ the￿ specified￿ range￿￿ remove the￿ electrode￿ ￿￿2￿￿￿ SeElectrode￿ Replacement￿￿ Meas/

ure￿ the￿ resistance￿ between￿ the￿ conductive￿ rod￿ ￿FF￿￿ and the￿ resistor￿ in￿ the￿ inside￿ diameter￿ of￿ resistor￿ stud￿ ￿￿6￿￿

The￿ resistance￿ should￿ be￿ 2￿￿3￿￿ megohms￿￿ If￿ the￿ resis/

tance￿ is￿ correct￿￿ the￿ electrode￿ wire￿ is￿ defective￿ and￿ must

 

 

￿8

 

 

GG

be￿ replaced￿￿ SeeElectrode￿ ￿ Replacement￿￿ If￿ the￿ resis/

 

 

 

 

 

tance￿ is￿ outside￿ the￿ specified￿ range￿￿ the￿ resistor￿ is￿ de/

 

 

 

fective￿ and￿ the￿ resistor￿ stud￿ ￿￿6￿￿ must￿ be￿ replaced￿￿ See

 

 

 

Resistor￿ Stud￿ Replacement￿

 

 

 

 

If￿ you￿ still￿ have￿ problems￿￿ refer￿ toElectricalhe￿

￿

 

 

 

 

 

 

Troubleshooting￿ Chart￿ for￿ other￿ possible￿ causes￿ of

 

 

FF

poor￿ performance￿￿ or￿ contact￿ the￿ nearest￿ authorized

 

 

￿2

service￿ agency￿

 

 

 

 

 

 

Fig￿ 9

 

 

 

307-638 17

Image 17
Contents Rev. AE Manual MID±RANGE ElectrostaticPart Number 218±026, Series E Read and Retain for Reference Terms Table of ContentsHazardous Fluid Hazard Hose SafetyEquipment Misuse Hazard Ventilate the Spray Booth Flushing and Cleaning SafetyFire 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 Operation Operating ChecklistFilter the Fluid Spraying OperationAdjust the Spray Pattern Install the Fluid Nozzle and Air CapDaily Care and Cleaning MaintenanceClean the Air Cap and Fluid Nozzle Follow the Pressure Relief Procedure Warning onFlush the Spray Gun Problem Cause Solution Improper Spray Pattern Spray Pattern Troubleshooting ChartProblem Cause Solution GUN Operation Troubleshooting ChartElectrical Troubleshooting Chart Test Gun Resistance Test Power Supply ResistanceTest Resistor Stud Resistance Electrode Replacement Gun DisassemblyResistor Stud Replacement Barrel Removal Fluid Needle Packing Replacement45d Service45f 45c3c 2 3a Power Cartridge Replacement18b Turbine Alternator Removal Air Valve Replacement Fan Air Valve ReplacementFluid Adjusting Screw Replacement ES ON±OFF Valve Removal & ReplacementMuffler and Check Valve Replacement KEY81Parts Drawing Ref No Power CartridgeRef No 59, Tool Kit Includes items 59a±59h 59f 59e 59d 59g 59c 59b59a218±014 HANDLE, gun Includes item 2a Parts List179±400 18b 186±127Repair Kits Service Information Technical DataHOW to Order Replacement Parts Assembly Changed Status No. Part No NameAccessories 218±123 Electrostatic System Filter AIR or Paint 202±271218±124 Electrostatic System PRO4000H GUN Electrostatic High Conductivity KIT 222±029Important Phone Numbers Graco PRO4000 Warranty and Disclaimers