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 - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4 - Declaration of Conformity For; XMT; Directives
dec_con1 10/95 Declaration of Conformity For European Community (CE) Products Manufacturer ’s Name: Miller Electric Mfg. Co. Manufacturer ’s Address: 1635 W. Spencer StreetAppleton, WI 54914 USA Declares that the product: XMT 304 conforms to the following Directives and Standards: Directives Elect...
Page 5 - SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING; Symbol Usage; Arc Welding Hazards; ELECTRIC SHOCK can kill.
OM-180 670 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. T...
Page 7 - Additional Symbols For Installation, Operation, And Maintenance; Principal Safety Standards
OM-180 670 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 siz...
Page 8 - EMF Information
OM-180 670 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...
Page 9 - Signification des symboles; Dangers relatifs au soudage à l’arc; UN CHOC ÉLECTRIQUE peut tuer.
OM-180 670 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 mes...
Page 10 - LE BRUIT peut affecter l’ouïe.
OM-180 670 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 ...
Page 13 - SECTION 2 – DEFINITIONS; Manufacturer ’s Warning Label Definitions
OM-180 670 Page 9 SECTION 2 – DEFINITIONS 2-1. Manufacturer ’s Warning Label Definitions 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 ...
Page 15 - Manufacturer ’s Rating Labels
OM-180 670 Page 11 2-2. Manufacturer ’s Rating Labels
Page 16 - Symbols And Definitions; Hz
OM-180 670 Page 12 2-3. Symbols And Definitions A Amperage Panel Alternating Current (AC) V Voltage Output Circuit Breaker Remote On Off Gas Tungsten Arc Welding Negative Voltage Input Direct Current (DC) Positive Inductance Protective Earth (Ground) Constant Current Constant Voltage Foot Control Li...
Page 17 - SECTION 3 – INSTALLATION; Specifications; Duty Cycle And Overheating
OM-180 670 Page 13 SECTION 3 – INSTALLATION 3-1. Specifications Rated Welding Output Voltage Range Amperage Range Maximum Open-Circuit IP Rating Amperes Input at Rated Load Output 50/60 Hz Output Range Range Voltage DC 400 V KVA KW 300 A @ 32 Volts DC, 60% Duty Cycle 10 – 35 5 – 400 90 23 17.0 (0.15...
Page 19 - Selecting A Location
OM-180 670 Page 15 3-4. Selecting A Location loc_2 3/96 - ST-801 192 1 Lifting Handles Use handles to lift unit. 2 Hand Cart Use cart or similar device to moveunit. 3 Plate Label Use label to determine input powerneeds. 4 Line Disconnect Device Locate unit near correct inputpower supply. Y Special i...
Page 20 - Weld Output Terminals And Selecting Cable Sizes
OM-180 670 Page 16 3-5. Weld Output Terminals And Selecting Cable Sizes Y ARC WELDING can cause Electromagnetic Interference. To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor.Locate welding operation 100 meters from any sensit...
Page 22 - Electrical Service Guide; NOTE; Connecting Input Power
OM-180 670 Page 18 3-8. Electrical Service Guide Actual input voltage should not exceed ± 10% of indicated required input voltage. If actual input voltage is outside of this range, output may not be available. NOTE Input Voltage 400 Input Amperes At Rated Output 17.0 Max Recommended Standard Fuse Or...
Page 23 - SECTION 4 – OPERATION; Front Panel Controls
OM-180 670 Page 19 SECTION 4 – OPERATION 4-1. Front Panel Controls 1 Power On/Off Switch . The fan motor is thermostaticallycontrolled and only runs when cooling isneeded. 2 Voltmeter (see Section 4-2) 3 Ammeter (see Section 4-2) 4 Voltage/Amperage Adjustment Control 5 Mode Switch The Mode switch se...
Page 24 - Meter Functions; PPP
OM-180 670 Page 20 4-2. Meter Functions The meters display the actual weld output values for approximately three secondsafter the arc is broken. NOTE Mode Meter Reading At Idle Lift-Arc Trigger Hold TIG (GTAW) V A Blank Preset Amps 85 TIG (GTAW) Blank Preset Amps V A 85 MIG (GMAW) Preset Volts Blank...
Page 25 - Mode Switch Settings
OM-180 670 Page 21 4-3. Mode Switch Settings The SMAW modes provide the Adaptive Hot Start feature, which automatically increases the output amperage at the start of a weld should the start require it. Thiseliminates electrode sticking at arc start. NOTE Mode Output Control Lift-Arc Trigger Hold T...
Page 26 - Lift-Arc Trigger Hold TIG
OM-180 670 Page 22 4-4. Lift-Arc Trigger Hold TIG 1 TIG Electrode 2 Workpiece . Procedure requires: Start sequence: • Touch tungsten electrode toworkpiece at weld start point. • Momentarily depress outputswitch. • Slowly lift electrode. An arc willform when electrode is lifted. • To stop welding, mo...
Page 27 - SECTION 5 – MAINTENANCE & TROUBLESHOOTING; Routine Maintenance
OM-180 670 Page 23 SECTION 5 – MAINTENANCE & TROUBLESHOOTING 5-1. Routine Maintenance Y Disconnect power before maintaining. . Maintain more oftenduring severe conditions. 3 Months Replace Damaged Or Unreadable Labels Replace Cracked Torch Body Repair Or Replace Cracked Cables Repair Or Replace ...
Page 28 - Voltmeter/Ammeter Help Displays
OM-180 670 Page 24 5-3. Voltmeter/Ammeter Help Displays . All directions are in reference to the frontof the unit. All circuitry referred to is lo-cated inside the unit. 1 Help 0 Display Indicates a shorted thermistor RT2 on the leftside of the unit. If this display is shown, con-tact a Factory Auth...
Page 29 - Troubleshooting
OM-180 670 Page 25 5-4. Troubleshooting Trouble Remedy No weld output; unit completely inop- Place line disconnect switch in On position (see Section 3-9). erative. Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 3-9). Check for proper input power connections (see...
Page 30 - Notes
Page 31 - SECTION 6 – ELECTRICAL DIAGRAM; Figure 6-1. Circuit Diagram For Welding Power Source
OM-180 670 Page 27 SECTION 6 – ELECTRICAL DIAGRAM 197 552 Figure 6-1. Circuit Diagram For Welding Power Source
Page 32 - SECTION 7 – PARTS LIST
OM-180 670 Page 28 SECTION 7 – PARTS LIST 801 605-F Figure 7-1. Parts Assembly
Page 35 - (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 36 - 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...
