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IM10067
®
May, 2010
CENTURY AC 120
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be
increased by proper installation
... and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT READ-
ING THIS MANUAL AND THE
SAFETY PRECAUTIONS CON-
TAINED THROUGHOUT. And,
most importantly, think before
you act and be careful.
OPERATOR'S MANUAL
Copyright © Lincoln Global Inc.
• Century ® Equipment
11728 K2964-1
2345 Murphy Blvd. Gainesville, GA 30504 TEL: 866-236-0044
Web Site: www.centuryequipment.net
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Related Manuals for Lincoln Electric CENTURY AC 120
Summary of Contents for Lincoln Electric CENTURY AC 120
- Page 1 IM10067 ® May, 2010 CENTURY AC 120 Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thoughtful operation on your part.
- Page 2 351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
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Page 3: Electric Shock Can Kill
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 5. Toujours porter des lunettes de sécurité dans la zone de PRÉCAUTIONS DE SÛRETÉ soudage. Utiliser des lunettes avec écrans lateraux dans les zones où l’on pique le laitier. Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté...
- Page 6 for selecting one of our QUALITY products. We want you to take Thank You 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. Our challenge is to meet the needs of our customers and to exceed their expectations.
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Page 7: Table Of Contents
TABLE OF CONTENTS Page Installation .......................Section A Safety ........................A-1 General Description ....................A-1 Technical Specifications ..................A-2 Identify and Locate Components, Input Connections..........A-2 ________________________________________________________________________ Operation ......................Section B Thermal Protection ....................B-1 Making A Weld.......................B-1 Electrode Selection....................B-1 Learning to Weld..................B-1 Thru B-4 ________________________________________________________________________ Troubleshooting...................Section C-1 ________________________________________________________________________ Wiring Diagram ....................Section D-1... -
Page 8: Installation
INSTALLATION SAFETY GENERAL DESCRIPTION Read the entire manual before installing and oper- The AC 120 is composed of a single phase trans- ating the AC 120. former and is suitable for welding in alternate current using stick electrodes (type 6013) with diameters from WARNING 1/16 to 5/64 in. -
Page 9: Technical Specifications
INSTALLATION TECHNICAL SPECIFICATIONS INPUT – SINGLE PHASE ONLY Voltage/Frequency Input Current 120V/60Hz 15 Amps @ Rated Output RATED OUTPUT Duty Cycle Amps Volts OUTPUT RANGE Welding Current Range AC Output: 50-90 amps Maximum Open Circuit Voltage PHYSICAL DIMENSIONS Height Width Depth Weight 11.00 in. -
Page 10: Identify And Locate Components, Input Connections
It has special contact jaws to grasp the bare part of the welding electrode. 4) INSTRUCTION MANUAL 5) POWER SWITCH FIGURE A.1 C E N T U R Y A C 1 2 0 CENTURY AC 120 CENTURY® AC 120... -
Page 11: Operation
Many vari- shield in front of face strike the electrode work point ables beyond the control of The Lincoln Electric on the workpiece as if striking a match. Do not hit the Company affect the results obtained in applying electrode on the workpiece, which will damage the this type of information. - Page 12 OPERATION The core wire melts in the arc and tiny droplets of WARNING molten metal shoot across the arc into the molten ELECTRIC SHOCK can kill. pool. The electrode provides additional filler metal for Carefully review the ARC WELDING the joint to fill the groove or gap between the two SAFETY PRECAUTIONS at the begin- pieces of the base metal.
- Page 13 OPERATION Lower your headshield or hold the hand shield in front NOTE: When welding on thin plate, you will find that of your face. Scratch the electrode slowly over the you will have to increase the welding speed, whereas metal and you will see sparks flying. While scratching, when welding on heavy plate, it is necessary to go lift the electrode 1/8"...
- Page 14 OPERATION Types of Butt Joint Now weld the two plates together. Weld from left to right (if right-handed). Point the electrode down in the crack between the two plates, keeping the electrode slightly tilted in the direction of travel. (See Figure B.7) Watch the molten metal to be sure it distributes itself evenly on both edges and in between the plates.
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Page 15: 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 16 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION Power source stops. Thermal Overload Protection acti- The Thermal Protection automati- vated due to overload. cally resets when the transformer has cooled (approximately 15 min- utes) Power switch on but no weld cur- Bad connection between ground-...
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Page 17: Wiring Diagram
WIRING DIAGRAMS To earth ground in accordance with National, local or other applicable Electrical codes. 120 V 60 Hz CENTURY® AC 120... - Page 18 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 •...
- Page 19 Keep your head out of fumes. Turn power off before servicing. Do not operate with panel open or • • • WARNING Use ventilation or exhaust to guards off. • remove fumes from breathing zone. Spanish Los humos fuera de la zona de res- •...
- Page 20 • Century ® Equipment 2345 Murphy Blvd. Gainesville, GA 30504 TEL: 866-236-0044 Web Site: www.centuryequipment.net...