Lincoln Electric IM725 manual Changing the Contact TIP, Changing Drive Roll

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D-3

MAINTENANCE

 

 

 

D-3

COMPONENT REPLACEMENT PROCEDURES

CHANGING THE CONTACT TIP

1.Unplug or turn power switch to Off “O” position.

2.Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise.

3.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

4.Insert and hand tighten desired contact tip.

5.Replace gas nozzle.

CHANGING THE SP-135 PLUS FOR USE WITH INNERSHIELD FLUX CORED WIRE

•Change The Contact Tip

1.Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise.

2.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

3.Insert and hand tighten the contact tip for use with 0.035” Innershield Flux Cored Wire.

4.Replace gas nozzle – The gasless nozzle may be used instead of the gas nozzle to give improved visi- bility of the arc.

CHANGING DRIVE ROLL

The drive roll, Figure D.1 Item 1, has two grooves; one for .023" – .025" (0.6 mm) solid steel electrode and a larger groove for .030" (0.8 mm) solid and .035" (0.9 mm) flux-cored steel electrode. As shipped, the drive roll is installed in the .023"-.025" (0.6 mm) position.

If .030"/.035" (0.8/0.9 mm) wire is to be used, the drive roll must be reversed as follows:

1.Turn the power switch to OFF (marked “O”).

2.Release the spring-loaded idle arm tensioner, Figure D.1 Item 2, and lift the idle roll arm, Figure D.1 Item 3, away from the drive roll.

3.Loosen the Phillips Head screw holding the drive roll onto the drive shaft.

CAUTION

When inching the welding wire, the drive rolls, gun connector block, and gun contact tip are energized relative to work and ground and remain energized for several seconds after the gun trig- ger is released.

4.Remove the drive roll, flip over and reinstall with the opposite groove closest to the gearbox.

NOTE: The stencil of the groove that you want to use is marked on the outside of the drive unit (when installed)

5.Push a length of straightened welding wire through the wire feeder guide tubes and reset the Phillips Head screw to secure the drive roll onto the shaft.

6.Reapply the spring loaded idle arm tensioner.

7.Turn the power “ON” (I) and check the drive roll for slipping when feeding wire. DO NOT OVERTIGHTEN - If necessary, tighten or loosen the spring loaded idle arm tensioner (2).

3

2

1

FIGURE D.1

SP-135 PLUS

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Contents SP-135 Plus Safety Depends on YouSafety Electric Shock can kill Iii SafetySP-135 Plus Sûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Thank YouTable of Contents Technical Specifications SP-135 Plus InstallationIdentify and Locate Components Safety PrecautionsElectric Shock can kill Work Cable Installation Work Clamp InstallationSelect Suitable Location StackingConnecting Gun Cable to the SP-135 GUN InstallationGAS Connection PlusGas Solenoid Inlet Fitting Input ConnectionsInput CableRequirements For Rated Output Code Requirements for Input ConnectionsRequirements For Maximum Output Operation Observe all safety information throughout this manualFumes and Gases can be dangerous Welding Sparks can cause fire or explosionDesign Features Advantages Controls and SettingsGeneral Description Welding CapabilityWelding Operations Wire LoadingSequence of Operation 4OPERATIONB-4 Making a Weld Shielding GasCleaning Tip And Nozzle Changing Machine Over to Feed Other Wire SizesProcess Guidelines Overload Protection Wire Feed Overload ProtectionOutput Overload Thermal ProtectionLearning to Weld Learning to WeldARC-WELDING Circuit SELF-SHIELDED Fcaw Welding ARCProcess Selection Gmaw MIG Welding ARCJoint Types and Positions Common MetalsFor Gmaw MIG Process For Fcaw Innershield ProcessPenetration Welding In The Vertical PositionFillet Welds Welding Techniques for the Self Shielded Fcaw Process Machine SET UP for the SELF-SHIELDED Fcaw ProcessVertical-down Welding Correct Welding PositionCorrect Welding Speed Correct Electrical Stickout ESOPractice Helpful HintsWelding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG ProcessFigure B.24 To Eliminate a Ropy Convex Bead in order of importance Troubleshooting WeldsTo Correct Poor Penetration in order of impor- tance To Eliminate Stubbing* in order of importanceProper Gun Handling Application Chart Optional Accessories AccessoriesK586-1 Deluxe Adjustable Gas Regulator Hose Kit Innershield Fcaw Conversion Replacement PartsMaintenance Safety Precautions MaintenanceItems Requiring no Maintenance Routine and Periodic MAINTE- NanceConfiguration of Components in Wire Feeding System GUN and Cable MaintenanceFor Magnum 100L GUN Contact Tip Cable Liner Drive RollChanging Drive Roll Changing the Contact TIPGUN Handle Parts Changing LinerLiner trim length for gun with red trigger Magnum 100L HOW to USE Troubleshooting Guide TroubleshootingProblems Possible Areas Symptoms Misadjustments Troubleshooting GuideRecommended Course of Action Feeding Problems GAS Flow Problems Diagrams WiringSP-135 Plus New Lessons in Arc Welding How To Read Shop DrawingsNeed Welding Training? $700.00Precaucion Warnung
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