Lincoln Electric IM756-A Overload Protection, Cleaning TIP and GAS Nozzle, Thermal Protection

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B-5

 

OPERATION

B-5

 

 

 

 

CLEANING TIP AND GAS NOZZLE

 

 

Clean the contact tip and gas nozzle to avoid arc bridging between them. Bridging can result in a short- ed nozzle, poor welds and an overheated gun. Hint: Anti-stick spray or gel, available from a welding supply distributor, may reduce buildup and aid in spatter removal.

CHANGING MACHINE OVER TO FEED

OTHER WIRE SIZES

The machine is shipped from the factory ready to feed 0.035” (0.9 mm) diameter wire. To operate the machine with other sizes of wire, it is necessary to change the contact tip and change the drive roll to other sizes. Refer to Changing the Contact Tip and Changing the Drive Roll in the MAINTENANCE sec- tion for specific information on these procedures.

OVERLOAD PROTECTION

THERMAL PROTECTION

The machine has a maximum output duty cycle of 20%. If the duty cycle is exceeded, a thermal protector will shut off the output until the machine cools to a normal operating temperature. This is an automatic function of the machine and does not require user intervention.

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 Select Suitable Location StackingChanging Polarity Input ConnectionsShielding GAS Connection Code Requirements for ELECTRI- CAL Input ConnectionsRequirements for Maximum Output Extension Cord UsageOperational Features and Controls Design Features and AdvantagesOperation General DescriptionControls and Settings Welding CapabilityLimitations Welding OperationsContact TIP Wire Electrode 3OPERATIONB-3Shielding GAS Contact Tip To Work Distance CtwdMaking a Weld 4OPERATIONB-4Table B.1 Handy MIG Cleaning TIP and GAS Nozzle Changing Machine Over to Feed Other Wire SizesOverload Protection Thermal ProtectionAccessories AccessoriesInnershield Welding Wire MIG Welding WireMaintenance Maintenance Safety PrecautionsItems Requiring No Maintenance Routine and Periodic MaintenanceCleaning the GUN Liner Cleaning Components AS RequiredComponent Replacement Procedures 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
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