Century INVERTER ARC 120 Operator's Manual
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Century INVERTER ARC 120 Operator's Manual

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IM998
August, 2009
INVERTER ARC
120
™
11565
For use with machines having Code Numbers:
Safety Depends on You
Century® arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thought-
ful operation on your part. DO
NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT
WITHOUT
READING
THIS
MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED
THROUGHOUT. And, most
importantly, think before you act
and be careful.
OPERATOR'S MANUAL
Copyright © Lincoln Global Inc.
Century Equipment
2345 Murphy Blvd. Gainesville, GA 30504 TEL: 866-236-0044

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Summary of Contents for Century INVERTER ARC 120

  • Page 1 ™ 11565 For use with machines having Code Numbers: Safety Depends on You Century® arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thought- ful operation on your part.
  • Page 2 SAFETY WARNING CALIFORNIA PROPOSITION 65 WARNINGS Diesel engine exhaust and some of its constituents The engine exhaust from this product contains are known to the State of California to cause can- chemicals known to the State of California to cause cer, birth defects, and other reproductive harm.
  • Page 3 SAFETY ARC RAYS can burn. ELECTRIC SHOCK can 4.a. Use a shield with the proper filter and cover kill. plates to protect your eyes from sparks and 3.a. The electrode and work (or ground) circuits the rays of the arc when welding or observing are electrically “hot”...
  • Page 4 SAFETY WELDING and CUTTING CYLINDER may explode SPARKS can if damaged. cause fire or explosion. 7.a. Use only compressed gas cylinders 6.a. Remove fire hazards from the welding area. containing the correct shielding gas for the If this is not possible, cover them to prevent process used and properly operating the welding sparks from starting a fire.
  • Page 5 SAFETY PRÉCAUTIONS DE SÛRETÉ 6. Eloigner les matériaux inflammables ou les recouvrir afin de prévenir tout risque d’incendie dû aux étincelles. Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce 7.
  • Page 6 SAFETY Electromagnetic Compatibility (EMC) Conformance Products displaying the CE mark are in conformity with European Community Council Directive of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility (89/336/EEC). It was manufactured in conformity with a national standard that implements a harmonized standard: EN 60974-10 Electromagnetic Compatibility (EMC) Product Standard for Arc Welding Equipment.
  • Page 7 SAFETY Electromagnetic Compatibility (EMC) The size of the surrounding area to be considered will depend on the structure of the building and other activities that are taking place. The surrounding area may extend beyond the boundaries of the premises. Methods of Reducing Emissions Mains Supply Welding equipment should be connected to the mains supply according to the manufacturer’s recommenda- tions.
  • Page 8 T T h h a a n n k k Y Y o o u u for selecting one of our QUALITY products. We want you to take pride in operating this product ••• as much pride as we have in bringing this product to you! CUSTOMER ASSISTANCE POLICY The business of our company is manufacturing and selling high quality welding equipment.

  • Page 9: Table Of Contents

    viii TABLE OF CONTENTS viii Page Installation........................Section A Technical Specifications .......................A-1 Safety Precautions ....................Select Suitable Location .......................A-2 Stacking..........................A-2 Tilting ............................A-2 Input Connections ........................A-2 Ground Connection ......................A-2 Input Power Connection .......................A-2 120V Input ..........................A-3 Output Connections......................A-3 Stick Welding........................A-3 ________________________________________________________________________________ Operation.........................Section B Safety Instructions ........................B-1 General Description......................B-1 Welding Capability........................B-1...

  • Page 10: Installation

    INSTALLATION TECHNICAL SPECIFICATION INVERTER ARC™ 120 INPUT - SINGLE PHASE ONLY Input Voltages 60 Hz. Rated Input Current 120Vac ± 15% 20 Amps @ Rated Output RATED OUTPUT Output Amps Output Volts Input Circuit Duty Cycle 70A (Stick) 22.8 Vdc 120 Vac OUTPUT Output Current Range...

  • Page 11: Technical Specifications

    INSTALLATION Read entire installation section before starting TILTING installation. Place the machine directly on a secure, level surface. Do not place or operate this machine on a surface SAFETY PRECAUTIONS with an incline greater than 15° from horizontal. The machine may topple over if this procedure is not fol- WARNING lowed.

  • Page 12: 120V Input

    INSTALLATION 120V INPUT FIGURE A.1 The INVERTER ARC™ 120 is provided with a 120V cable, 6.0ft.(1.8m) in length, with a 15Amp 5-15P plug molded onto the cord. The rated output of the INVERTER ARC™ 120 is Electrode available when connected to a 20A branch circuit. Holder When connected to a branch circuit with lower ampac- ity, lower welding current and duty cycle must be...

  • Page 13: Operation

    OPERATION Read and understand this entire section before WELDING CAPABILITY operating your machine. The INVERTER ARC™ 120 is rated at 70 amps, 22.8 SAFETY INSTRUCTIONS volts, at 20% duty cycle on a ten minute basis. It is capable of higher duty cycles at lower output currents. WARNING If the duty cycle is exceeded, a thermal protector will shut off the output until the machine cools.
  • Page 14 OPERATION CONTROLS AND OPERATIONAL REAR CONTROL PANEL (See Figure B.2) FEATURES 6. Power Switch: It turns ON / OFF the input power FRONT CONTROL PANEL to the machine. (See Figure B.1) 1. Output Current Knob: Potentiometer used to 7. Input cable: This machine is provided with a set the output current used during welding.

  • Page 15: Arc Welding Circuit

    OPERATION ARC-WELDING CIRCUIT This figure closely resembles what is actually seen during welding. The “arc stream’’ is seen in the middle (See Figure B.3) of the figure. This is the electric arc created by the electric current flowing through the space between the FIGURE B.3 end of the electrode and the work.
  • Page 16 OPERATION 4. Immediately after striking the arc try to maintain a 7. Once the electrode is burned down move the elec- distance from the workpiece that is equivalent to trode quickly from the weld to extinguish the arc. the diameter of the electrode used. Maintain this distance as constantly as possible during the weld.

  • Page 17: Maintenance

    MAINTENANCE SAFETY PRECAUTIONS WARNING WARNING Do not open this machine and do not introduce any- thing into its openings. Power supply must be discon- ELECTRIC SHOCK can kill. nected from the machine before each maintenance • Have an electrician install and serv- and service.

  • Page 18: Troubleshooting

    TROUBLESHOOTING HOW TO USE TROUBLESHOOTING GUIDE WARNING Service and Repair should only be performed by Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 19 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION WELDING PROBLEMS Excessive spatter 1. Improper welding polarity. 1. Make sure the electrode holder is plugged into the positive “+” out- put terminal. 2.
  • Page 20 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION ELECTRICAL FAILURES Machine fails to come on 1. No Input Voltage. (Power LED off) 2. Faulty supply plug or cable. 3. Supply fuse blown or breaker tripped.
  • Page 21 DIAGRAMS INVERTER ARC™ 120...
  • Page 22 Do not touch electrically live parts or Keep flammable materials away. Wear eye, ear and body protection. WARNING electrode with skin or wet clothing. Insulate yourself from work and ground. Spanish No toque las partes o los electrodos Mantenga el material combustible Protéjase los ojos, los oídos y el AVISO DE bajo carga con la piel o ropa moja-...
  • Page 23 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. WARNING remove fumes from breathing zone. Spanish Los humos fuera de la zona de res- Desconectar el cable de ali- No operar con panel abierto o AVISO DE...

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