Miller XMT 304 Owner's Manual
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Miller XMT 304 Owner's Manual

230/460 volt model
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OM-2208
175493AY
2018−02
Processes
Multiprocess Welding
Description
Arc Welding Power Source
XMT 304
R
(230/460 Volt Model)
For product information,
Owner's Manual translations,
and more, visit
File: MULTIPROCESS
www.MillerWelds.com

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  • Page 1 OM-2208 175493AY 2018−02 Processes Multiprocess Welding Description Arc Welding Power Source XMT 304 (230/460 Volt Model) For product information, Owner’s Manual translations, and more, visit File: MULTIPROCESS www.MillerWelds.com...
  • Page 2 We know you don’t have time to do it any other way. That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING ....... . . 1-1.

  • Page 5: Section 1 − Safety Precautions - Read Before Using

    SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2018−01 Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions. 1-1. Symbol Usage DANGER! − Indicates a hazardous situation which, if Indicates special instructions.
  • Page 6 D Do not cut or weld on tire rims or wheels. Tires can explode if heat- FUMES AND GASES can be hazardous. ed. Repaired rims and wheels can fail. See OSHA 29 CFR 1910.177 listed in Safety Standards. D Do not weld on containers that have held combustibles, or on Welding produces fumes and gases.

  • Page 7: Additional Symbols For Installation, Operation, And Maintenance

    D Never weld on a pressurized cylinder − explosion will result. CYLINDERS can explode if damaged. D Use only correct compressed gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them Compressed gas cylinders contain gas under high and associated parts in good condition.

  • Page 8: California Proposition 65 Warnings

    H.F. RADIATION can cause interference. ARC WELDING can cause interference. D High-frequency (H.F.) can interfere with radio D Electromagnetic energy can interfere with navigation, safety services, computers, and sensitive electronic equipment such as communications equipment. computers and computer-driven equipment such as robots. D Have only qualified persons familiar with electronic equipment D Be sure all equipment in the welding area is electromagnetically perform this installation.

  • Page 9: Section 2 − Consignes De Sécurité − Lire Avant Utilisation

    SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION som_2018−01_fre Pour écarter les risques de blessure pour vous−même et pour autrui — lire, appliquer et ranger en lieu sûr ces consignes relatives aux précautions de sécurité et au mode opératoire. 2-1.
  • Page 10 D Déplacer toutes les substances inflammables à une distance de LES PIÈCES CHAUDES peuvent 10,7 m de l’arc de soudage. En cas d’impossibilité les recouvrir provoquer des brûlures. soigneusement avec des protections homologués. D Ne pas toucher à mains nues les parties chaudes. D Ne pas souder dans un endroit là...

  • Page 11: Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance

    D Protéger les bouteilles de gaz comprimé d’une chaleur excessive, Les CHAMPS ÉLECTROMAGNÉTIQUES (CEM) des chocs mécaniques, des dommages physiques, du laitier, des peuvent affecter les implants médicaux. flammes ouvertes, des étincelles et des arcs. D Placer les bouteilles debout en les fixant dans un support station- D Les porteurs de stimulateurs cardiaques et naire ou dans un porte-bouteilles pour les empêcher de tomber ou autres implants médicaux doivent rester à...

  • Page 12: Proposition Californienne 65 Avertissements

    D Effectuer régulièrement le contrôle et l’entretien de l’installation. LIRE LES INSTRUCTIONS. D Maintenir soigneusement fermés les portes et les panneaux des sources de haute fréquence, maintenir les éclateurs à une distan- D Lire et appliquer les instructions sur les ce correcte et utiliser une terre et un blindage pour réduire les étiquettes et le Mode d’emploi avant l’instal- interférences éventuelles.

  • Page 13: Section 3 − Definitions

    SECTION 3 − DEFINITIONS 3-1. Additional Safety Symbols And Definitions Some symbols are found only on CE products. Warning! Watch Out! There are possible hazards as shown by the symbols. Safe1 2012−05 When power is applied failed parts can explode or cause other parts to explode. Safe26 2012−05 Always wear long sleeves and button your collar when servicing unit.

  • Page 14: Miscellaneous Symbols And Definitions

    3-2. Miscellaneous Symbols And Definitions Amperage Shielded Metal Single Phase Arc Welding (SMAW) Output Increase Primary Voltage Voltage Degree Of Direct Current Protection (DC) Alternating Constant Current Current (AC) Voltage Input Remote Arc Force Protective Earth (Ground) Negative Rated No Load Three Phase Voltage (Average) Static Frequency...

  • Page 15: Section 4 − Specifications

    SECTION 4 − SPECIFICATIONS 4-1. Serial Number And Rating Label Location The serial number and rating information for this product is located on the rear panel. Use rating label to determine input power requirements and/or rated output. For future reference, write serial number in space provided on back cover of this manual. 4-2.

  • Page 16: Environmental Specifications

    4-4. Environmental Specifications A. IP Rating IP Rating IP23 This equipment is designed for outdoor use. IP23 2017−02 B. Temperature Specifications Operating Temperature Range* Storage/Transportation Temperature Range 14 to 104°F (−10 to 40°C) −4 to 131°F (−20 to 55°C) *Output is derated at temperatures above 104°F (40°C). Temp_2016- 07 4-5.

  • Page 17: Volt-Ampere Curves

    4-6. Volt-Ampere Curves Volt-ampere curves show minimum and maximum voltage and amper- age output capabilities of unit. Curves of other settings fall be- tween curves shown. C. CC Mode ARC CONTROL D. CV Mode va_curve1 4/95 − SA-178 652 / SA-178 653 OM-2208 Page 13...

  • Page 18: Section 5 − Installation

    SECTION 5 − INSTALLATION 5-1. Selecting A Location Movement Do not move or operate unit where it could tip. Location And Airflow Special installation may be required where gasoline or volatile liquids are present − see NEC Article 511 or CEC Section 20.

  • Page 19: Selecting Cable Sizes

    5-2. Selecting Cable Sizes* NOTICE − The Total Cable Length in Weld Circuit (see table below) is the combined length of both weld cables. For example, if the power source is 100 ft (30 m) from the workpiece, the total cable length in the weld circuit is 200 ft (2 cables x 100 ft). Use the 200 ft (60 m) column to determine cable size.

  • Page 20: Remote 14 Receptacle Information

    5-4. Remote 14 Receptacle Information Socket* Socket Information 24 volts AC. Protected by supplementary 24 VOLTS AC protector CB2. Contact closure to A completes 24 volts AC C L N contactor control circuit. Output to remote control; 0 to +10 volts DC, +10 volts DC in MIG mode.
  • Page 21 Notes OM-2208 Page 17...

  • Page 22: Connecting 1-Phase Input Power

    5-6. Connecting 1-Phase Input Power =GND/PE Earth Ground Tools Needed: Input1 2012−05 − Ref. 803 766-C OM-2208 Page 18...
  • Page 23 5-6. Connecting 1-Phase Input Power (Continued) put power. A 460/575 model can be connected Disconnect Device Grounding Terminal Installation must meet all National and to either 460 or 575 VAC input power. Local Codes − have only qualified per- Disconnect Device Line Terminals sons make this installation.

  • Page 24: Connecting 3-Phase Input Power

    5-7. Connecting 3-Phase Input Power = GND/PE Earth Ground Tools Needed: input2 2012−05 − Ref. 803 766-C / 801 192 OM-2208 Page 20...
  • Page 25 5-7. Connecting 3-Phase Input Power (Continued) NOTICE − The Auto-Link circuitry in this unit Disconnect Device Line Terminals Installation must meet all National and automatically links the power source to the Local Codes − have only qualified per- Connect green or green/yellow grounding primary voltage being applied.

  • Page 26: Section 6 − Operation

    SECTION 6 − OPERATION 6-1. Front Panel Controls Ref. ST-175 086 Power Switch ing, place switch in Stick position. For best re- minimum, short-circuit amperage at low arc sults, place Inductance/Dig control in the voltage is the same as normal welding The fan motor is thermostatically maximum position.

  • Page 27: Meter Functions

    6-2. Meter Functions The meters display the actual weld output values for approximately three seconds after the arc is broken. Mode Meter Reading At Idle Meter Reading While Welding Scratch 80.0 10.3 Start TIG Actual Volts (OCV) Preset Amps Actual Volts Actual Amps 10.3 Lift-Arc TIG...

  • Page 28: Lift-Arc Tig Procedure

    6-4. Lift-Arc TIG Procedure With Process Switch in the Lift-Arc TIG position, start an arc as follows: TIG Electrode Workpiece Touch tungsten electrode to work- piece at weld start point, hold electrode to workpiece for 1-2 seconds, and slowly lift electrode. An arc will form when electrode is lifted.

  • Page 29: Blowing Out Inside Of Unit

    7-2. Blowing Out Inside Of Unit Do not remove case when blowing out inside of unit. To blow out unit, direct airflow through front and back louvers as shown. ST-801 192 OM-2208 Page 25...

  • Page 30: Help Displays

    7-3. Help Displays All directions are in reference to the front of the unit. All circuitry referred to is located inside the unit. HE.L P−0 Help 0 Display Indicates a shorted thermistor RT2 on the left side of the unit. If this display is shown, contact a Factory Authorized Service Agent.

  • Page 31: Troubleshooting

    7-4. Troubleshooting Trouble Remedy No weld output; unit completely inop- Place line disconnect switch in On position (see Sections 5-6 and 5-7). erative. Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 5-6 and 5-7). Check for proper input power connections (see Section 5-6 and 5-7). No weld output;...

  • Page 32: Section 8 − Electrical Diagrams

    SECTION 8 − ELECTRICAL DIAGRAMS 278447-B Figure 8-1. Circuit Diagram For 230/460 Volt Models OM-2208 Page 28...
  • Page 33 Notes OM-2208 Page 29...

  • Page 34: Section 9 − Parts List

    SECTION 9 − PARTS LIST Hardware is common and not available unless listed. 801428-K Figure 9-1. Parts Assembly OM−2208 Page 30...
  • Page 35 Item Dia. Part Mkgs. Description Quantity Figure 9-1. Parts Assembly ....+175148 Wrapper ............
  • Page 36 Item Dia. Part Mkgs. Description Quantity Figure 9-1. Parts Assembly (Continued) ....207725 Heat Sink, Power Module ........
  • Page 37 Notes Start Your Professional Over 80,000 trained 400 Trade Square East, Troy, Ohio 45373 Welding Career Now! since 1930! 1-800-332-9448 www.welding.org...
  • Page 38 Notes...
  • Page 39 Effective January 1, 2018 (Equipment with a serial number preface of MJ or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. Warranty Questions? LIMITED WARRANTY − Subject to the terms and conditions below, 6 Months —...
  • Page 40 Contact the Delivering Carrier to: File a claim for loss or damage during shipment. For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. © ORIGINAL INSTRUCTIONS − PRINTED IN USA 2018 Miller Electric Mfg. LLC 2018−01...

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