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Century Inverter Arc 120 Operator's Manual

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Operator's Manual
Inverter Arc 120
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Date Purchased
Code: (ex: 10859)
Serial: (ex: U1060512345)
IM10444
| Issue D ate Sep-17
© Lincoln Global, Inc. All Rights Reserved.
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: globalservice@lincolnelectric.com
Gainesville, GA 30504
2345 Murphy Blvd.
TEL: 866-236-0044

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Summary of Contents for Century Inverter Arc 120

  • Page 1 Operator’s Manual Inverter Arc 120 Need Help? Call 1.888.935.3877 Register your machine: to talk to a Service Representative www.lincolnelectric.com/register Authorized Service and Distributor Locator: Hours of Operation: www.lincolnelectric.com/locator 8:00 AM to 6:00 PM (ET) Mon. thru Fri. Save for future reference After hours? Use “Ask the Experts”...

  • Page 2: Safety Depends On You

    THANK YOU FOR SELECTING A QUALITY PRODUCT BY KEEP YOUR HEAD OUT OF THE FUMES. DON’T get too close to the arc. LINCOLN ELEC TRIC. Use corrective lenses if necessary to stay a reasonable distance away from the arc. READ and obey the Safety Data PLEASE EXAMINE CARTON AND EQUIPMENT FOR Sheet (SDS) and the warning label DAMAGE IMMEDIATELY...
  • Page 3 S FETY SECTION A: 1.d. Keep all equipment safety guards, covers and devices in position and in good repair. Keep hands, hair, clothing and tools away WARNINGS from V-belts, gears, fans and all other moving parts when starting, operating or repairing equipment.

  • Page 4: Electric Shock Can Kill

    S FETY ELECTRIC SHOCK ARC RAYS CAN BURN. CAN KILL. 3.a. The electrode and work (or ground) circuits are 4.a. Use a shield with the proper filter and cover plates to protect your electrically “hot” when the welder is on. Do eyes from sparks and the rays of the arc when welding or not touch these “hot”...
  • Page 5 S FETY WELDING AND CUTTING CYLINDER MAY EXPLODE IF SPARKS CAN CAUSE DAMAGED. FIRE OR EXPLOSION. 7.a. Use only compressed gas cylinders containing the correct shielding gas for the process used 6.a. Remove fire hazards from the welding area. If and properly operating regulators designed for this is not possible, cover them to prevent the welding sparks the gas and pressure used.
  • Page 6 INVERTER ARC 120 TABLE OF CONTENTS...

  • Page 7: Safety Precautions

    HIGH FREQUENCY PROTECTION Locate the Inverter Arc 120 away from radio controlled machinery. The normal operation of the Inverter Arc 120 may adversely affect the operation of RF controlled equipment, which may result in bodily injury or damage to the equipment.

  • Page 8: Input Connections

    (1) Also called “inverse time” or “thermal/magnetic” circuit breakers. These circuit breakers have a delay in tripping action that decreases as the mag- nitude of the current increases. Positive “+” The Inverter Arc 120 is recommended for use on an individual Negative “–” branch circuit. Work Cable 120v INPUT The INVERTER ARC™...

  • Page 9: General Description

    • Keep flammable material away. • Do not weld upon containers which have held combustibles. LIMITATIONS The Inverter Arc 120 is not recommended for pipe thawing. ARC RAYS can burn. • Wear eye, ear and body protection. FUMES AND GASES can be dangerous.

  • Page 10: Rear Control Panel

    INVERTER ARC 120 OPERATION CONTROLS AND OPERATIONAL FEATURES FRONT CONTROl PANel ReAR CONTROl PANel 1. Output Current Knob: Potentiometer used to set the output (See Figure B.2) current used during welding. Set the output according to the 6. Power Switch: It turns ON / OFF the input power to the type and size of electrode.

  • Page 11: Arc-Welding Circuit

    INVERTER ARC 120 OPERATION ARC-WELDING CIRCUIT ELECTRIC ARC FIGuRe b.3 (See Figure B.3) (See Figure B.4) FIGuRe b.4 Action that takes place in the electric arc. Work Cable Work Clamp This figure closely resembles what is actually seen during Electrode Cable welding.

  • Page 12: Making A Weld

    INVERTER ARC 120 OPERATION MAKING A WELD 6. The important thing to watch while welding is the puddle of molten metal right behind the arc. Do NOT watch the arc Insert the bare part of the electrode into the electrode holder jaws itself.
  • Page 13 INVERTER ARC 120 ACCESSORIES OPTIONAL KITS AND ACCESSORIES...

  • Page 14: Routine Maintenance

    INVERTER ARC 120 MAINTENANCE MAINTENANCE TROUBLESHOOTING WARNING WARNING HOW TO USE TROUBLESHOOTING GUIDE ELECTRIC SHOCK can kill. Service and Repair should only be performed by Lincoln • Turn the input power OFF at the welding Electric Factory Trained Personnel. Unauthorized repairs...

  • Page 15: Welding Problems

    INVERTER ARC 120 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEM POSSIBLE AREAS OF RECOMMENDED COURSE OF ACTION (SYMPTOMS) MISADJUSTMENT(S) WelDING PRObleMS Excessive spatter 1. Improper welding polarity. 1. Make sure the electrode holder is plugged into the positive “+”...
  • Page 16 INVERTER ARC 120 DIAGRAMS...
  • Page 18 WARNING Do not touch electrically live parts or Keep flammable materials away. Wear eye, ear and body protection. electrode with skin or wet clothing. Insulate yourself from work and AVISO DE ground. Spanish PRECAuCION No toque las partes o los electrodos Mantenga el material combustible Protéjase los ojos, los oídos y el bajo carga con la piel o ropa moja-...
  • Page 19 WARNING Keep your head out of fumes. Turn power off before servicing. Do not operate with panel open or Use ventilation or exhaust to guards off. remove fumes from breathing zone. AVISO DE Spanish PRECAuCION Los humos fuera de la zona de res- Desconectar el cable de ali- No operar con panel abierto o piración.
  • Page 20 CUSTOMER ASSISTANCE POLICY The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric for advice or information about their use of our products.

This manual is also suitable for:

K2789-2

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