Lincoln Electric IM756-A manual Problems Possible Symptoms Cause, Recommended Course of Action

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E-2

TROUBLESHOOTING

E-2

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

POSSIBLE

 

 

(SYMPTOMS)

 

 

CAUSE

 

 

 

 

 

 

OUTPUT PROBLEMS

 

 

Major physical or electrical damage

 

 

None

 

 

is evident.

 

 

Contact your local Authorized Field

 

 

 

 

 

Service Facility.

 

 

 

 

 

 

 

 

 

No wire feed, weld output or gas

 

 

1.

Make sure correct voltage is

 

 

flow when gun trigger is pulled.

 

 

 

applied to the machine (115vac).

 

 

 

 

 

2.

Make certain that power switch

 

 

 

 

 

 

is in the ON position.

 

 

 

 

 

3.

The thermostat may be tripped

 

 

 

 

 

 

due to overheating. Let machine

 

 

 

 

 

 

cool. Weld within the duty cycle

 

 

 

 

 

 

or remove any air obstruction to

 

 

 

 

 

 

the machine.

 

 

 

 

 

 

 

 

No weld output when gun trigger is

 

 

1. Gun tip may be worn. Replace.

 

 

pulled.

 

 

 

 

 

 

 

 

 

2.

Gun trigger may be faulty.

 

 

 

 

 

3.

The gun or work cable may be

 

 

 

 

 

 

faulty.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED COURSE OF ACTION

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln 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 Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

HANDY MIG

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Contents Handy MIG Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Master Table of Contents for ALL Sections Technical Specifications Handy MIG InstallationHandy MIG Identify and Locate Components Safety PrecautionsElectric Shock can kill Changing Polarity Select Suitable LocationStacking Input ConnectionsRequirements for Maximum Output Shielding GAS ConnectionCode Requirements for ELECTRI- CAL Input Connections Extension Cord UsageOperation Operational Features and ControlsDesign Features and Advantages General DescriptionLimitations Controls and SettingsWelding Capability Welding OperationsShielding GAS Contact TIP Wire Electrode3OPERATIONB-3 Contact Tip To Work Distance CtwdMaking a Weld 4OPERATIONB-4Table B.1 Handy MIG Overload Protection Cleaning TIP and GAS NozzleChanging Machine Over to Feed Other Wire Sizes Thermal ProtectionInnershield Welding Wire AccessoriesAccessories MIG Welding WireItems Requiring No Maintenance MaintenanceMaintenance Safety Precautions Routine and Periodic MaintenanceComponent Replacement Procedures Cleaning the GUN LinerCleaning Components AS Required Changing the Contact TIPGUN Assembly Removal Work Cable InstallationTroubleshooting HOW to USE Troubleshooting GuideProblems Possible Symptoms Cause Recommended Course of ActionContact your local Lincoln Authorized Field Service FacilityWelding Problems Diagrams HandyWiring Diagram for Code Hinge Door Assembly for Code 10919 only Handy MIG Handy MIG Precaucion Warnung