Page 2 - From Hobart to You; Register your product at:; Protect Your Investment!
Hobart Welders manufactures a full lineof welders and welding related equipment.For information on other quality Hobart products, contact your local Hobartdistributor to receive the latest full line catalog or individual specification sheets. To locate your nearest distributor or service agency call...
Page 3 - TABLE OF CONTENTS
TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1...
Page 5 - ELECTRIC SHOCK can kill.
OM-249 498 Page 1 SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2011 − 01 7 Protect yourself and others from injury — read and follow these precautions. 1-1. Symbol Usage DANGER! − Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible ha...
Page 6 - FUMES AND GASES can be hazardous.; ARC RAYS can burn eyes and skin.; WELDING can cause fire or explosion.; BUILDUP OF GAS can injure or kill.
OM-249 498 Page 2 Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health. FUMES AND GASES can be hazardous. D Keep your head out of the fumes. Do not breathe the fumes. D If inside, ventilate the area and/or use local forced ventilation at the arc to remove...
Page 7 - ARC WELDING can cause interference.
OM-249 498 Page 3 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. D Do not install or place unit on, over, or near combustible surfaces. D Do not install unit near flammables. D Do not overload building wiring − be sure power supply system is properly s...
Page 9 - SECTION 2; CONSIGNES DE SÉCURITÉ; UNE DÉCHARGE ÉLECTRIQUE peut
OM-249 498 Page 5 SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION fre_som_2010 − 03 7 Se protéger et protéger les autres contre le risque de blessure — lire et respecter ces consignes. 2-1. Symboles utilisés DANGER! − Indique une situation dangereuse qui si on l’évite pas peut donner la m...
Page 15 - Hz
OM-249 498 Page 11 SECTION 3 − DEFINITIONS 3-1. Symbols And Definitions A Amperage V Voltage Hz Hertz Negative Positive Direct Current (DC) Single Phase Input Output Voltage Input Off On Do Not Switch While Welding Gas Metal Arc Welding (GMAW) Wire Feed Circuit Protector U 0 Rated No Load Voltage (A...
Page 17 - A or V
OM-249 498 Page 13 4-3. Duty Cycle And Overheating Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before weldi...
Page 19 - Correct; Gun Fully Seated
OM-249 498 Page 15 SECTION 5 − INSTALLATION 5-1. Installing Nozzle, Contact Tip, And Adapter Ref. 243 839-A ! Turn off welding power source. 1 Nozzle 2 Contact Tip 3 Tip Adapter . Wire size stamped on tip − check and match wire size. Tools Needed: 8 mm Head Tube 8 mm 1 3 2 5-2. Installing Welding Gu...
Page 23 - Input Voltage
OM-249 498 Page 19 5-7. Electrical Service Guide Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommendations are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source. 60 Hz Singl...
Page 28 - -14. Installing Wire Spool And Adjusting Hub Tension
OM-249 498 Page 24 5-14. Installing Wire Spool And Adjusting Hub Tension When a slight force is needed to turn spool, tension is set. 1/2 in. Tools Needed: 803 012 / 803 013 -B / Ref. 802 971-C Installing 8 in. (203 mm) Wire Spool Installing 4 in. (102 mm) Wire Spool When a slight force is needed to...
Page 34 - -4. Changing Drive Roll Or Wire Inlet Guide
OM-249 498 Page 30 7-4. Changing Drive Roll Or Wire Inlet Guide ! Turn off welding power source. 1 Inlet Wire Guide Securing Screw 2 Inlet Wire Guide Loosen screw. Slide tip as close to drive rolls as possible without touching. Tighten screw.3 Retaining Pin To remove drive roll, push drive roll in a...
Page 40 - SECTION 9
OM-249 498 Page 36 SECTION 9 − MIG WELDING (GMAW) GUIDELINES mig1 2009 − 12 Wire Feeder/ Power Source Workpiece Gun Regulator/ Flowmeter Gas Shielding Gas Work Clamp 9-1. Typical MIG Process Connections ! Weld current can damage electronic parts in vehicles. Disconnect both battery cables before wel...
Page 41 - Typical MIG Process Control Settings
OM-249 498 Page 37 9-2. Typical MIG Process Control Settings . These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be surethey comply to specifications. 3.5 x 125 A = 437 ipm 2 x 125 A = 250 ipm 1.6 x 125 A = 2...
Page 42 - Holding And Positioning Welding Gun
OM-249 498 Page 38 9-3. Holding And Positioning Welding Gun . Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in. (13 mm)past end of nozzle, and tip of wire is positioned correctly on seam. 1 Hold Gun and Control Gu...
Page 43 - Conditions That Affect Weld Bead Shape
OM-249 498 Page 39 9-4. Conditions That Affect Weld Bead Shape . Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed(weld current), and voltage. Slow FILLET WELD ELECTODE EXTENSIONS (STICKOUT) ELECTRODE EXT...
Page 47 - Waviness Of Bead; Distortion
OM-249 498 Page 43 9-14. Troubleshooting − Waviness Of Bead Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal. S-0641 Possible Causes Corrective Actions Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in. (13 m...
Page 48 - -17. Troubleshooting Guide For Semiautomatic Welding Equipment; Problem
OM-249 498 Page 44 9-16. Common MIG Shielding Gases This is a general chart for common gases and where they are used. Many different combinations (mixtures) of shielding gases have been developed over the years. The most commonly used shielding gases are listed in the following table. Application Ga...
Page 50 - PARTS LIST
OM-249 498 Page 46 SECTION 10 − PARTS LIST . Hardware is common andnot available unless listed. 250 327-A 56 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 49 50 51 52 53 54 55 57 58 59 60 48 Figure 10-1. Main Assem...
Page 56 - Hobart Welding Products; Please complete and retain with your personal records.; To locate a Distributor,; Contact your Distributor for:; Resources Available; For technical assistance:
ORIGINAL INSTRUCTIONS − PRINTED IN USA © 2011 Hobart Welding Products. 2011 − 01 Hobart Welding Products An Illinois Tool Works Company 600 West Main Street Troy, OH 45373 USA For Technical Assistance: Call1-800-332-3281 For Literature Or Nearest Dealer: Call 1-877-Hobart1 Model Name Serial/Style Nu...