Hobart OM-303 - Manuals

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Manual

Manual Hobart OM-303

Summary

Page 2 - From Hobart to You

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 catalog sheets.To locate your nearest distributor or service agency call 1-877-...

Page 3 - TABLE OF CONTENTS; WARNING

The following terms areused interchangeablythroughout this manual:TIG = GTAWStick = SMAW TABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . ...

Page 5 - SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING; Symbol Usage; Arc Welding Hazards; ELECTRIC SHOCK can kill.; FUMES AND GASES can be hazardous.

OM-303 Page 1 SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_4/98 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazardswith this procedure! The possible hazards are shown inthe adjoining symbols. Y Marks a special safety message. . Means “Note”; not safety related. This ...

Page 6 - WELDING can cause fire or explosion.

OM-303 Page 2 Arc rays from the welding process produce intensevisible and invisible (ultraviolet and infrared) raysthat can burn eyes and skin. Sparks fly off from theweld. ARC RAYS can burn eyes and skin. D Wear a welding helmet fitted with a proper shade of filter to protectyour face and eyes whe...

Page 7 - Additional Symbols For Installation, Operation, And Maintenance; Principal Safety Standards

OM-303 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 nearcombustible surfaces. D Do not install unit near flammables. D Do not overload building wiring – be sure power supply system isproperly sized, ...

Page 8 - EMF Information

OM-303 Page 4 1-5. EMF Information Considerations About Welding And The Effects Of Low FrequencyElectric And Magnetic FieldsWelding current, as it flows through welding cables, will cause electro-magnetic fields. There has been and still is some concern about suchfields. However, after examining mor...

Page 9 - Signification des symboles; Dangers relatifs au soudage à l’arc; UN CHOC ÉLECTRIQUE peut tuer.

OM-303 Page 5 SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION som _nd_fre 4/98 1-1. Signification des symboles Signifie Mise en garde ! Soyez vigilant ! Cette procédureprésente des risques de danger ! Ceux-ci sont identifiéspar des symboles adjacents aux directives. Y Identifie un message...

Page 10 - LE BRUIT peut affecter l’ouïe.

OM-303 Page 6 Le rayonnement de l’arc du procédé de soudagegénère des rayons visibles et invisibles intenses(ultraviolets et infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées pendant le soudage. LES RAYONS DE L’ARC peuvent pro-voquer des ...

Page 13 - SECTION 2 – DEFINITIONS; General Precautionary Label

OM-303 Page 9 SECTION 2 – DEFINITIONS 2-1. General Precautionary Label

Page 14 - Symbols And Definitions; IP; SECTION 3 – INTRODUCTION; Included with Your Unit

OM-303 Page 10 2-2. Symbols And Definitions Tig Welding Remote Foot/Hand Control Stick Welding High Temperature Output Alternating Current Direct Current On Electrode Positive Electrode Negative Do Not Switch Under Load Voltage Input A Amperes Off Electrode Gas Out Amperage Control/ Panel Work Remot...

Page 16 - SECTION 4 – INSTALLATION; Selecting a Location; Typical Stick Connections

OM-303 Page 12 SECTION 4 – INSTALLATION 4-1. Selecting a Location ST-158 075 Position unit so air can circulate. For information about sources ofhigh-frequency see Section 8. For carts and caster kits see backof book or contact your distributor. 18 in (460 mm) 18 in (460 mm) 18 in (460 mm) 4-2. Typi...

Page 17 - Typical TIG Connections

OM-303 Page 13 4-3. Typical TIG Connections Ref. ST-157 858-A Y Turn Off power before mak-ing connections. 1 Remote Control 2 Torch Connect to receptacles as shown. 3 Work Clamp 4 Cylinder Chain or secure cylinder to runninggear, wall, or other stationarysupport. 5 Cylinder Valve Open valve slightly...

Page 18 - Electrical Service Guide; Connecting Input Power

OM-303 Page 14 4-4. Electrical Service Guide S-0092J . For 230 V models with wall receptacle, 100% duty cycle used to calculate data below. 20% duty cycle used for all other models. Input Voltage 200 230 380 415 460 Input Amperes at Rated Output 59 52 39 36 33 Standard Fuse or Circuit Breaker Rating...

Page 19 - SECTION 5 – OPERATION; Controls

OM-303 Page 15 SECTION 5 – OPERATION 5-1. Controls Ref. ST-155 790-F 1 Weld Process Switch Use switch to select weld process. In Stick position (down), weld output goes Onand Off with Power switch. In GTAW (TIG) position (up), remote controldevice turns on and adjusts weld output of unitas limited b...

Page 20 - Example of Front Panel Amperage Control; Example of Remote Amperage Control; or

OM-303 Page 16 5-2. Example of Front Panel Amperage Control In Example: Range = DC Percentage of Range = 50% Weld Amperage = 33 A DC Select percentage. Select weld process. Select range and polarity. 5-3. Example of Remote Amperage Control Connect remote control. GTAW Welding Amperage Range AC Low A...

Page 21 - Process and Material Thickness Guide Label

OM-303 Page 17 5-4. Process and Material Thickness Guide Label Guideline For Welding Process And Output For Material Material Thickness Material And 22 ga 20 ga 18 ga 16 ga 14 ga 12 ga 11 ga 10 ga 6 ga 2 ga – 0.033 in 0.8 mm 0.036 in 0.9 mm 0.048 in 1.2 mm 0.06 in 1.5 mm 0.07 in 1.8 mm 0.1 in 2.5 mm...

Page 22 - SECTION 6 – MAINTENANCE AND TROUBLESHOOTING; Routine Maintenance; Troubleshooting

OM-303 Page 18 SECTION 6 – MAINTENANCE AND TROUBLESHOOTING 6-1. Routine Maintenance Y Disconnect power before maintaining. . Maintain more often during severe conditions. 3 Months Replace unreadable labels. Clean and tighten weld terminals. Repair or replace cracked weldcable. Repair or replace crac...

Page 23 - SECTION 7 – ELECTRICAL DIAGRAMS

OM-303 Page 19 SECTION 7 – ELECTRICAL DIAGRAMS SB-154 141-C Figure 7-1. Circuit Diagram

Page 24 - SECTION 8 – HIGH FREQUENCY; Welding Processes Requiring High Frequency

OM-303 Page 20 SECTION 8 – HIGH FREQUENCY 8-1. Welding Processes Requiring High Frequency high_freq1 11/96 – S-0693 1 High-Frequency Voltage Helps arc jump air gap betweentorch and workpiece and/orstabilize the arc. 1 TIG Work 8-2. Incorrect Installation 50 ft (15 m) S-0694 Sources of Direct High-Fr...

Page 25 - Correct Installation

OM-303 Page 21 8-3. Correct Installation 1 High-Frequency Source (welding powersource with built-in HF or separate HFunit) Ground metal machine case, work outputterminal, line disconnect device, input supply,and worktable.2 Center Point of Welding Zone Midpoint between high-frequency source andweldi...

Page 26 - SECTION 9 – PARTS LIST

OM–303 Page 22 SECTION 9 – PARTS LIST ST-801 399-C Figure 9-1.Main Assembly . Hardware is common andnot available unless listed. 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 7 31 32 33 34 35 34 32 36 37 38 39 40 41 11 42 43 45 44 46 47 48

Page 31 - (Equipment with a serial number preface of “LB” or newer)

Warranty Questions? Call1-877-HOBART1for your localHobart distributor. hobart standard 10/01 ServiceYou always get the fast,reliable response youneed. Most replacementparts can be in yourhands in 24 hours. SupportNeed fast answers to thetough welding questions?Contact your distributor orcall 1-800-3...

Page 32 - Hobart Welding Products; Please complete and retain with your personal records.; Contact your Distributor for:; Resources Available; For technical assistance:

PRINTED IN USA  2002 Hobart Welding Products. 1/02 Hobart Welding Products An Illinois Tool Works Company600 West Main StreetTroy, OH 45373 USA For Technical Assistance:Call1-800-332-3281For Literature Or Nearest Dealer:Call 1-877-Hobart1 Model Name Serial/Style Number Purchase Date (Date which equ...