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.
OM-222 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 7 - Additional Symbols For Installation, Operation, And Maintenance; Principal Safety Standards
OM-222 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-222 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-222 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-222 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-222 Page 9 SECTION 2 – DEFINITIONS 2-1. General Precautionary Label Warning! Watch Out! There arepossible hazards as shown by thesymbols. 1 Electric shock from weldingelectrode or wiring can kill. 1.1 Wear dry insulating gloves. Do not touch electrode withbare hand. Do not wear wet ordamaged glov...
Page 14 - Input Connection Label; Electric Shock And Airflow Label
OM-222 Page 10 2-2. Input Connection Label 1 Warning! Watch Out! Thereare possible hazards asshown by the symbols. 2 Electric shock from wiring cankill. 3 Disconnect input plug orpower before working onmachine. 4 Read the Owner’s Manualbefore working on thismachine. 5 Consult rating label for inputp...
Page 15 - Manufacturer ’s Rating Labels For CE Products
OM-222 Page 11 2-5. Manufacturer ’s Rating Labels For CE Products . Match label to one on unit. See Section 3-4.
Page 16 - Symbols And Definitions; Note; Hz
OM-222 Page 12 2-6. Symbols And Definitions Some symbols are found only on CE products. Note A Amperes Amperage Control/ Panel Gas Tungsten Arc Welding (GTAW) Shielded Metal Arc Welding (SMAW) Temperature Do Not Switch While Welding Arc Force (DIG) Percent Output Circuit Breaker Remote V Volts Prote...
Page 17 - SECTION 3 – INSTALLATION; Specifications
OM-222 Page 13 SECTION 3 – INSTALLATION 3-1. Specifications Model Rated Welding Amp Maximum Open- IP Amperes Input at Rated Load Output, 50 or 60 Hz, Three-Phase Model Welding Output Range DC Circuit Voltage DC Rating 200 V 230 V 380 V 400 V 440 V 460 V 575 V KVA KW 300 Amp 300 A @ 32 Volts DC, 60% ...
Page 19 - Selecting A Location; Dimensions And Weights
OM-222 Page 15 3-4. Selecting A Location 1 Lifting Eye 2 Lifting Forks Use lifting eye or lifting forks tomove unit. If using lifting forks, extend forksbeyond opposite side of unit. 3 Rating Label (Non CE ModelsOnly) Use rating label to determine inputpower needs. Label located underfront access do...
Page 25 - IMPORTANT
OM-222 Page 21 3-13. Connecting Input Power ST-800 103-B / Ref. ST-801 116 3/8 in 3/8 in Tools Needed: IMPORTANT GND/ 3 PE Connect Green Or Green/Yellow GND/PE Conductor First. Input Contactor L1 (U) L2 (V) L3 (W) = GND/PE Earth Ground 1 10 3 When making connections inthe line disconnect device,conn...
Page 26 - SECTION 4 – OPERATION
OM-222 Page 22 SECTION 4 – OPERATION 4-1. Controls (Non CE Models) 1 Polarity Selector Switch (Optional On 50Hz Models) To change polarity on models not equippedwith a Polarity Selector switch, reverse workand electrode cables at the weld output termi-nals (see Section 3-8). Y Turn Off Power before ...
Page 27 - SECTION 5 – MAINTENANCE AND TROUBLESHOOTING; Routine Maintenance
OM-222 Page 23 4-2. Controls (CE Models) 1 Polarity Selector Switch (Optional On 50Hz Models) To change polarity on models not equippedwith a Polarity Selector switch, reverse workand electrode cables at the weld output termi-nals (see Section 3-8). Y Turn Off Power before reversingcables. 2 Arc For...
Page 29 - SECTION 6 – ELECTRICAL DIAGRAM
OM-222 Page 25 SECTION 6 – ELECTRICAL DIAGRAM For Primary Circuit Diagram Portion, refer to Circuit Diagramlocated inside wrapper of welding power source. SC-203 802 Figure 6-1. Circuit Diagram
Page 30 - SECTION 7 – PARTS LIST
OM-222 Page 26 SECTION 7 – PARTS LIST ST-800 875-E . Hardware is common andnot available unless listed. 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 14 17 18 (Fig.7 – 5) 19 20 21 22 3 4 23 25 26 24 27 28 (Fig.7 – 2) 29 (Fig.7 – 3 & 4) 22 Figure 7-1. Main Assembly (452 Model Illustrated)
Page 39 - (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 40 - 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...