Lincoln Electric IM767 specifications Overload Protection, Output Overload, Thermal Protection

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B-7

OPERATION

B-7

OVERLOAD PROTECTION

Output Overload

The WELDMARK 135 PLUS is equipped with a circuit breaker which protects the machine from potential damage from excessive output current. The circuit breaker button will extend out when tripped. The cir- cuit breaker must be manually reset.

Thermal Protection

The WELDMARK 135 PLUS duty cycle is exceeded a thermostat will shut off the output until the machine cools to a normal operating temperature. This is an automatic function and is self resetting.

Wire Feed Overload Protection

If the WELDMARK 135 PLUS has an automatic elec- tronic protection circuit to protect the wire feed motor. If excessive motor overload occurs (due to excessive feeding force, jammed drive rolls, or shorted motor leads) the circuit will shut down the wire feed motor and the welding power output.

The wire feed shut-down circuit will reset automatically when the gun trigger is released. However shut-down will reoccur if the overload situation is not corrected.

WELDMARK 135 PLUS

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Contents Weldmark 135 Plus Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcPlease Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationTable of Contents Installation Technical Specifications Weldmark 135 PlusElectric Shock can kill Safety PrecautionsIdentify and Locate Components Work Clamp Installation Work Cable InstallationSelect Suitable Location StackingGAS Connection GUN InstallationConnecting Gun Cable to the Weldmark 135 Plus Input Connections Gas Solenoid Inlet FittingInput CableRequirements For Maximum Output Code Requirements for Input ConnectionsRequirements For Rated Output Observe all safety information throughout this manual OperationFumes and Gases can be dangerous Welding Sparks can cause fire or explosionControls and Settings Design Features AdvantagesGeneral Description Welding CapabilitySequence of Operation Wire LoadingWelding Operations 4OPERATIONB-4 Friction Brake AdjustmentWire Threading Shielding Gas Making a WeldProcess Guidelines Changing Machine Over to Feed Other Wire SizesCleaning Tip And Nozzle Wire Feed Overload Protection Overload ProtectionOutput Overload Thermal ProtectionLearning to Weld Learning to WeldARC-WELDING Circuit SELF-SHIELDED Fcaw Welding ARCGmaw MIG Welding ARC Process SelectionCommon Metals Joint Types and PositionsFor Gmaw MIG Process For Fcaw Innershield ProcessFillet Welds Welding In The Vertical PositionPenetration Machine SET UP for the SELF-SHIELDED Fcaw Process Welding Techniques for the SELF- Shielded Fcaw ProcessVertical-down Welding Correct Welding PositionCorrect Electrical Stickout ESO Correct Welding SpeedHelpful Hints PracticeMachine SET UP for the Gmaw MIG Process Welding Techniques for the Gmaw MIG ProcessFor the Weldmark 135 PLUS, use Following Troubleshooting Welds To Eliminate a Ropy Convex Bead in order of importanceTo 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 Replacement Parts Innershield Fcaw ConversionMaintenance Maintenance Safety PrecautionsItems Requiring no Maintenance Routine and Periodic MAINTE- NanceGUN and Cable Maintenance Configuration of Components in Wire Feeding SystemFor Magnum 100L GUN Contact Tip Cable Liner Drive RollChanging the Contact TIP Changing Drive RollLiner trim length for gun with red trigger Magnum 100L Changing LinerGUN Handle Parts Troubleshooting HOW to USE Troubleshooting GuideTroubleshooting Guide Output ProblemsProblems Possible Symptoms Cause Recommended Course of ActionGAS Flow Problems Wiring Diagrams SP-135PLUSWIRINGWIRINGDIAGRAMDIAGRAMSWeldmark 135 Plus Precaucion Warnung Manufactured by Lincoln Electric Company