Lincoln Electric IM767 Problems Possible Symptoms Cause, Recommended Course of Action

Page 41

 

 

 

TROUBLESHOOTING

E-3

 

E-3

Observe Safety Guidelines

detailed in the beginning of this manual.

TROUBLESHOOTING GUIDE

 

 

 

 

 

 

 

 

PROBLEMS

 

 

POSSIBLE

 

 

(SYMPTOMS)

 

 

CAUSE

 

 

 

 

 

 

FEEDING PROBLEMS

 

 

No wire feed when gun trigger is

 

 

1.

If the wire drive motor is running

 

 

pulled. Fan runs, gas flows and

 

 

 

check to see if the correct wire

 

 

machine has correct open circuit

 

 

 

is in the machine.

 

 

voltage (28 vdc maximum) – weld

 

 

 

 

 

 

output.

 

 

2.

If the wire drive motor is running

 

 

 

 

 

 

make sure that the correct drive

 

 

 

 

 

 

rolls are installed in the

 

 

 

 

 

 

machine.

 

 

 

 

 

3.

Check for clogged cable liner or

 

 

 

 

 

 

feeding problems.

 

 

 

 

 

 

 

 

 

Wire feed speed motor runs very

 

 

1.

Make sure that the wire speed

 

 

fast. Weld output, gas flow and fan

 

 

 

control is not set at maximum.

 

 

operate normally.

 

 

 

 

 

 

 

 

 

 

 

 

 

The wire begins to feed but shuts

 

 

1.

Wire spool friction brake adjust-

 

 

off after a short time, and will feed

 

 

 

ment set too tight. Check adjust-

 

 

again for another short interval only

 

 

 

ment of the wire spool friction

 

 

if the trigger is released and

 

 

 

brake. See "Friction Brake

 

 

pressed again. (See description

 

 

 

Adjustment" in the "OPERA-

 

 

under wire feed overload protec-

 

 

 

TION" section of this manual.

 

 

tion).

 

 

 

 

 

 

 

 

 

2.

Idle roll pressure adjustment set

 

 

 

 

 

 

too high. Check adjustment of

 

 

 

 

 

 

the idle roll pressure. See "Wire

 

 

 

 

 

 

Threading" in The "OPERA-

 

 

 

 

 

 

TION" section of this manual.

 

 

 

 

 

3.

Damaged or poorly maintained

 

 

 

 

 

 

wire feed system.

 

 

 

 

 

1.

Check for clogged or damaged

 

 

 

 

 

 

cable liner, contact tip, and guide

 

 

 

 

 

 

tubes. Replace any damaged or

 

 

 

 

 

 

excessively worn parts.

 

 

 

 

 

2. Perform "ROUTINE AND

 

 

 

 

 

 

PERIODIC MAINTENANCE" as

 

 

 

 

 

 

described in this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED COURSE OF ACTION

Contact your local Authorized Field Service Facility.

CAUTION

If for any reason you do not understand the test procedures or are unable to Perform the tests/repairs safely, contact your

LOCAL AUTHORIZED FIELD SERVICE FACILITY for assistance before you proceed.

WELDMARK 135 PLUS

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Contents Weldmark 135 Plus California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Technical Specifications Weldmark 135 Plus InstallationElectric Shock can kill Safety PrecautionsIdentify and Locate Components Work Cable Installation Work Clamp InstallationSelect Suitable Location StackingGAS Connection GUN InstallationConnecting Gun Cable to the Weldmark 135 Plus Gas Solenoid Inlet Fitting Input ConnectionsInput CableRequirements For Maximum Output Code Requirements for Input ConnectionsRequirements For Rated 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 CapabilitySequence of Operation Wire LoadingWelding Operations 4OPERATIONB-4 Friction Brake AdjustmentWire Threading Making a Weld Shielding GasProcess Guidelines Changing Machine Over to Feed Other Wire SizesCleaning Tip And Nozzle 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 ProcessFillet Welds Welding In The Vertical PositionPenetration 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 ProcessFor the Weldmark 135 PLUS, use Following 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 K586-1 Deluxe Adjustable Gas Regulator Hose Kit AccessoriesOptional Accessories 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 TIPLiner trim length for gun with red trigger Magnum 100L Changing LinerGUN Handle Parts HOW to USE Troubleshooting Guide TroubleshootingOutput Problems Troubleshooting GuideRecommended Course of Action Problems Possible Symptoms CauseGAS Flow Problems SP-135PLUSWIRINGWIRINGDIAGRAMDIAGRAMS Wiring DiagramsWeldmark 135 Plus Precaucion Warnung Manufactured by Lincoln Electric Company
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