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Operator’s Manual

IM10444

|   Issue D ate Sep-17

© Lincoln Global, Inc.  All Rights Reserved.

For use with Product Numbers:

12744

Inverter Arc

120

Register your machine:  

www.lincolnelectric.com/register

Authorized Service and Distributor Locator:  

www.lincolnelectric.com/locator

Need Help? Call 1.888.935.3877 

to talk to a Service Representative

Hours of Operation: 

8:00 AM to 6:00 PM (ET) Mon. thru Fri.

After hours? 

Use “Ask the Experts” at lincolnelectric.com
A Lincoln Service Representative will contact you 
no later than the following business day.

For Service outside the USA: 

Email: [email protected]

Save for future reference  

Date Purchased

Code: (ex: 10859)

Serial: (ex: U1060512345)

2345 Murphy Blvd. 

Gainesville, GA 30504 

TEL: 866-236-0044

Summary of Contents for INVERTER ARC 120

Page 1: ...Need Help Call 1 888 935 3877 to talk to a Service Representative Hours of Operation 8 00 AM to 6 00 PM ET Mon thru Fri After hours Use Ask the Experts at lincolnelectric com A Lincoln Service Represe...

Page 2: ...A LARGE ROOM OR OUTDOORS natural ventilation may be adequate if you keep your head out of the fumes See below USE NATURAL DRAFTS or fans to keep the fumes away from your face If you develop unusual s...

Page 3: ...rs and devices in position and in good repair Keep hands hair clothing and tools away from V belts gears fans and all other moving parts when starting operating or repairing equipment 1 e In some case...

Page 4: ...to ANSI Z87 I standards 4 b Use suitable clothing made from durable flame resistant material to protect your skin and that of your helpers from the arc rays 4 c Protect other nearby personnel with su...

Page 5: ...nt passing through lifting chains crane cables or other alternate circuits This can create fire hazards or overheat lifting chains or cables until they fail 6 h Also see item 1 c 6 I Read and follow N...

Page 6: ...N B 1 WELDING CAPABILITY B 1 LIMITATIONS B 1 CONTROLS AND OPERATIONAL FEATURES B 2 ARC WELDING CIRCUIT B 3 ELECTRIC ARC B 3 MAKING A WELD B 4 OPTIONAL KITS AND ACCESSORIES SECTION C MAINTENANCE SECTIO...

Page 7: ...Locate the machine away from radio controlled machinery Normal operation may adversely affect the operation of nearby radio controlled machinery which may result in injury or equipment damage Read th...

Page 8: ...tripping action that decreases as the mag nitude of the current increases The Inverter Arc 120 is recommended for use on an individual branch circuit 120v INPUT The INVERTER ARC 120 is provided with...

Page 9: ...trations of these fumes and gases Use adequate ventilation when welding See ANSI Z49 1 Safety in Welding and Cutting published by the American Welding Society Only qualified personnel should operate t...

Page 10: ...s been disabled This normally occurs when the duty cycle of the machine has been exceeded Leave the machine on to allow the internal components to cool When the indicator turns off normal operation is...

Page 11: ...electric current flowing through the space between the end of the electrode and the work The temperature of this arc is about 6000 F 3315 C which is more than enough to melt metal The arc is very bri...

Page 12: ...siest way to tell whether the arc has the correct length is by listening to its sound A nice short arc has a distinctive crackling sound very much like eggs frying in a pan The incorrect long arc has...

Page 13: ...C 1 ACCESSORIES OPTIONAL KITS AND ACCESSORIES INVERTER ARC 120...

Page 14: ...W TO USE TROUBLESHOOTING GUIDE Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel Unauthorized repairs performed on this equipment may result in danger to the te...

Page 15: ...o low 2 Adjust welding output higher Electrode Sticking 1 Arc length is too short 1 Move the electrode further away from the weld joint 2 Welding current is too low 2 Turn the output knob up Porosity...

Page 16: ...is pasted inside the machine on one of the enclosure panels If the diagram is illegible write to the Service Department for a replacement Give the equipment code number HT OUT Iac v 12 12 12 2 5 3 6 4...

Page 17: ......

Page 18: ...parts or electrode with skin or wet clothing l Insulate yourself from work and ground l No toque las partes o los electrodos bajo carga con la piel o ropa moja da l Aislese del trabajo y de la tierra...

Page 19: ...d Entl ftung des Arbeitsplatzes l Mantenha seu rosto da fuma a l Use ventila o e exhaust o para remover fumo da zona respirat ria l Turn power off before servicing l Desconectar el cable de ali mentac...

Page 20: ...with respect to such information or advice As a matter of practical consideration we also cannot assume any responsibility for updating or correcting any such information or advice once it has been gi...

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