Lincoln Electric SVM189-B service manual GasSolenoid Leads

Page 68

Return to Section TOC

Return to Section TOC

TOC

Return to Master TOC

Return to Master TOC

TOC

F-14

TROUBLESHOOTING & REPAIR

F-14

 

GAS SOLENOID TEST (CONTINUED)

FIGURE F.2 – GAS SOLENOID LOCATION & LEADS

GasSolenoid

Leads

PROCEDURE

Return to Section

Return to Section TOC

Return to Master

Return to Master TOC

1.Remove input power to the machine.

2.Perform the Case Cover Removal Procedure.

3.Locate the gas solenoid and lead connections. Do not disconnect the leads. See Figure F.2.

WARNING

ELECTRIC SHOCK can kill.

Have an electrician install and service this equipment. Turn the input power OFF at the fuse box before working on equipment. Do not touch electrically hot parts.

4.Turn the machine on and pull the gun trigger to con- duct the voltage test.

5.There should be approximately 6.5 VDC at the sole- noid.

6.If the 6.5 VDC is missing or is low, check the leads and connections between the solenoid and the con- trol board. See Wiring Diagram.

7.If the leads and connections are good to the board, verify the correct supply voltage 9 -33 VDC at pins 1 and 10 at P3 on the control board. See Wiring Diagram.

8.If voltage is correct at P3, the control board may be faulty. Replace the control board.

9.If the 6.5 VDC is present at the solenoid leads and the solenoid does not activate, the solenoid may be faulty. Normal solenoid coil resistance is approxi- mately 22 ohms.

10.The solenoid can be further checked by discon- necting the solenoid leads and applying 12VDC directly to the terminals. If the solenoid does not activate, the solenoid is faulty.

11.Replace all disconnected leads and replace the previously removed case cover.

COMPACT WIRE WELDERS

Image 68
Contents Safety Depends on You SVM189-BSafety California Proposition 65 WarningsElectric Shock can kill ARC Rays can burn Iii Welding CuttingFor Electrically Précautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical SpecificationsSafety Precautions Select Suitable LocationStacking TiltingIdentify and Locate Components Table of Contents Operation Section Operation Product Description Product CapabilitiesCommon Welding Abbreviations Wear eye, ear and body protec- tionSee Figure B.2 Controls and SettingsSee Figure B.1 See Figure B.3 Drive Roll Tension Thumbscrew TurningWire Diameter Drive Roll Drive Roll Part Inner Wire Guide Number Part NumberSetting UP and Making a FLUX-CORED Weld Items Needed for Flux Cored WeldingMachine Load Wire SpoolConnect Leads and Cables on Figure B.9 MIG Conversion Kit K2526-1 025Install Shielding GAS Shielding GAS11OPERATION Connect Leads and Cables on the Machine12OPERATION Do not Remove or Conceal Warning LabelsFigure B.20 Compact Wire Welders Table of Contents Accessories Section Accessories K2525-1 Spot Timer KitK2532-1 Magnum 100SG Spool Gun K2377-1 Small Canvas CoverK520-Utility Cart K2275-1 Welding Cart Technical Specifications Magnum 100SG Spool GUN K2532-1 Unpacking the Spool GUNSafety Precautions Locating Spool GUN Components FeaturesAssembly of Items Inside the Magnum Spool GUN Figure C.3Spool GUN Safety Precautions Welding MachinesRecommended Welding Machines Open the Machine Spool GUN / Wire Drive Selector Switch InstallationDisconnect input power from the machine 11.C. Connect harness P8 6-pin to board J5 6- pin Electrical Connections11.B. Connect P5 6-pin to harness J8 6-pin If Machine does have Optional Spot Timer .A. thru 12.D 544A 543AMounting the Switch RE-ASSEMBLE Machine AS FollowsACCESSORIESC-13 Disconnect input power to the machineRoutine Welding Machine Preparation Preparing the Spool GUNLoading Aluminum Wire Figure C.5Figure C.11 Connecting the GUN to the Welding Machine Figure C.17Table of Contents Maintenance Section Routine Maintenance MaintenanceMaintenance Safety Precautions For Magnum 100L GUN GUN and Cable MaintenanceOverload Protection Liner trim length Changing LinerGUN Handle Parts Major Component Locations Maintenance 1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation General DescriptionFigure E.3 Input Power Circuits Input Line VOLTAGE, FAN Motor & Main TransformerOutput CONTROL, Rectification & Voltage Feedback Figure E.4 Output CircuitsTRIGGER, GAS Solenoid and Wire Drive Figure E.5 TRIGGER, GAS Solenoid & Wire DriveSCR Operation Figure E.6 SCR OperationElectronic Wire Drive Motor Protection Compact Wire Welders Table of Contents Troubleshooting & Repair Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Wiring Diagram OUTPUT/FEEDING Problems Feeding Problems Welding Problems Maintenance Section Issues Maintenance Section Cone or gas diffuser Materials Needed Case Cover Removal and Replacement Procedure Test Description Procedure Figure F.1 Case RemovalGAS Solenoid Test GasSolenoid Leads Wire Drive Motor Test Test Procedure MOT-MOT+Main Transformer Test Secondary Test Procedure Secondary Lead Compact Wire Welders FAN Motor Test Figure F.5. Control Board Lead Locations Volts 10Volts 20ms Scope SettingsTypical Output Voltage Waveform Machine Loaded Abnormal Open Circuit Voltage Waveform Control Board Removal and Replacement Procedure See Figure F.7 Nameplate Control Knob Compact Wire Welders Power Module Removal and Replacement Procedure Viewed from Rear of Machine Center Panel PolarityPanel CenterPanelScrews OutputStuds Compact Wire Welders Misc. Hand Tools Dow Corning Fine Steel Wool See Figure F.12 Dow Corning Figure F.12 DOW Corning Application Areas Transformer Compact Wire Welders Wire Drive Motor Removal and Replacement Procedure Lincolnelectric Phillips Mounting Screws Compact Wire Welders FAN Motor Assembly Removal and Replacement Procedure Viewed from Rear of Machine Center Panel CenterPanelScrews Locking Tabs Fan Troubleshooting & Repair Retest After Repair 125 AMP Units Wire Speed RangeRetest After Repair 140 AMP Units Open Circuit VoltageTroubleshooting & Repair Retest After Repair 180 AMP Units Table of Contents Diagram Section Wiring Diagram COmpacT WirE WElDErSSpool GUN Interface Wiring Diagram Wiring Diagram M20410-3 a COmpacT WirE WElDErS Thermostat TMP FAN TS1SchEmaTic cOmplETE machiNE m21240 C12 R1Feed R24