Miller XMT 425 CC/CV Owner's Manual
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Miller XMT 425 CC/CV Owner's Manual

Miller XMT 425 CC/CV Owner's Manual

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OM-257 486D
2015-07
Processes
Multiprocess Welding
Description
Arc Welding Power Source
R
XMT 425 CC/CV
™
Auto-Line
CE
File: MULTIPROCESS
Visit our website at
www.MillerWelds.com

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Summary of Contents for Miller XMT 425 CC/CV

  • Page 1 OM-257 486D 2015-07 Processes Multiprocess Welding Description Arc Welding Power Source XMT 425 CC/CV ™ Auto-Line File: MULTIPROCESS Visit our website at www.MillerWelds.com...
  • Page 2 From Miller to You Thank you and congratulations on choosing Miller. Now you can get the job done and get it done right. 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 4: Declaration Of Conformity

    ITW Welding Italy S.r.l Via Privata Iseo 6/E, 20098 San Giuliano M.se, (MI) Italy declares that the product(s) identified in this declaration conform to the essential requirements and provisions of the stated Council Directive(s) and Standard(s). Product/Apparatus Identification: Product Stock Number XMT 425 CC/CV AUTOLINE, CE 907557002 Council Directives: • 2006/95/EC Low Voltage •...

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

    SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2013−09 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 Remove stick electrode from holder or cut off welding wire at FUMES AND GASES can be hazardous. contact tip when not in use. D Wear body protection made from durable, flame−resistant material Welding produces fumes and gases. Breathing (leather, heavy cotton, wool). Body protection includes oil-free these fumes and gases can be hazardous to your clothing such as leather gloves, heavy shirt, cuffless trousers, high health.

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

    1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. MOVING PARTS can injure. D Do not install or place unit on, over, or near D Keep away from moving parts such as fans. combustible surfaces. D Keep all doors, panels, covers, and guards D Do not install unit near flammables.

  • Page 8: California Proposition 65 Warnings

    1-4. California Proposition 65 Warnings Welding or cutting equipment produces fumes or gases This product contains chemicals, including lead, known to which contain chemicals known to the State of California to the state of California to cause cancer, birth defects, or other cause birth defects and, in some cases, cancer.

  • Page 9: Section 2 − Definitions

    SECTION 2 − DEFINITIONS 2-1. Additional Safety Symbols And Definitions Warning! Watch Out! There are possible hazards as shown by the symbols. Safe1 2012−05 Wear dry insulating gloves. Do not touch electrode with bare hand. Do not wear wet or damaged gloves. Safe2 2012−05 Protect yourself from electric shock by insulating yourself from work and ground.
  • Page 10 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. Safe28 2012−05 After taking proper precautions as shown, connect power to unit. Safe29 2012−05 Do not use one handle to lift or support unit.

  • Page 11: Miscellaneous Symbols And Definitions

    2-2. Miscellaneous Symbols And Definitions Protective Earth Amperage Conventional (Ground) Load Voltage Output Rated Welding Line Connection Current Three Phase Single Phase Static Frequency Converter- Direct Current Transformer- (DC) Circuit Breaker Rectifier Gas Tungsten Arc Constant Current Welding Duty Cycle Positive Arc Force Percent...

  • Page 12: Section 3 − Specifications

    SECTION 3 − SPECIFICATIONS 3-1. 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. 3-2.
  • Page 13 B. Information On Electromagnetic Fields (EMF) This equipment shall not be used by the general public as the EMF limits for the general public might be exceeded during welding. This equipment is built in accordance with EN 60974−1 and is intended to be used only in an occupational environment (where the general public access is prohibited or regulated in such a way as to be similar to occupational use) by an expert or an instructed person.

  • Page 14: Duty Cycle And Overheating

    3-5. Duty Cycle And Overheating Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating. If unit overheats, output stops, a Help message is displayed and cooling fan runs. Wait fifteen min- utes for unit to cool. Reduce amper- age or voltage, or duty cycle before welding.

  • Page 15: Volt-Ampere Curves

    3-6. Volt-Ampere Curves Volt-ampere curves show minimum and maximum voltage and amper- age output capabilities of welding power source. Curves of other set- A. CC Mode tings fall between curves shown. SMAW GTAW SMAW GTAW CONTROL 100% AMPERAGE B. CV Mode 5 00 AMPERAGE 217 836-A / 217 837-B...

  • Page 16: Section 4 − Installation

    SECTION 4 − INSTALLATION 4-1. 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 17: Selecting Cable Sizes

    4-2. 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 30 m (100 ft) from the workpiece, the total cable length in the weld circuit is 60 m (2 cables x 30 m). Use the 60 m (200 ft) column to determine cable size.

  • Page 18: Remote 14 Receptacle Information

    4-4. Remote 14 Receptacle Information Socket* Socket Information 24 volts AC. Protected by supplementary protect- 24 VOLTS AC or 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 19: Optional Gas Valve Operation And Shielding Gas Connection

    4-6. Optional Gas Valve Operation And Shielding Gas Connection Obtain gas cylinder and chain to running gear, wall, or other station- ary support so cylinder cannot fall and break off valve. Cylinder Regulator/Flowmeter Install so face is vertical. Gas Hose Connection GAS IN Fitting has 5/8-18...

  • Page 20: Electrical Service Guide

    4-7. Electrical Service Guide Elec Serv 2014−01 NOTICE − INCORRECT INPUT POWER can damage this welding power source. Phase to ground voltage shall not exceed +10% of rated input voltage. NOTICE − Actual input voltage should not be 10% less than minimum and/or 10% more than maximum input voltages listed in table. If actual input voltage is outside this range, output may not be be available.
  • Page 21 Notes OM-257 486 Page 17...

  • Page 22: Connecting 3-Phase Input Power

    4-8. Connecting 3-Phase Input Power = GND/PE Earth Ground Tools Needed: input2 2012−05 − Ref. 803 766-C / 803 879-B OM-257 486 Page 18...
  • Page 23 4-8. Connecting 3-Phase Input Power (Continued) primary voltage being applied. Check in- Input Conductors (L1, L2 And L3) Installation must meet all National and put voltage available at site. This unit can Local Codes − have only qualified per- Disconnect Device Line Terminals be connected to any input power between sons make this installation.

  • Page 24: Section 5 − Operation

    SECTION 5 − OPERATION 5-1. Front Panel Controls Power Switch Remote 14 Receptacle voltage is the same as normal welding amperage. The fan motor is thermostatically For remote control, make connections to controlled and only runs when cooling is When set towards maximum, short-circuit Remote 14 receptacle.

  • Page 25: Meter Functions

    5-2. 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 71.7 10.3 Start TIG Actual Volts (OCV) Preset Amps Actual Volts Actual Amps 10.3 Lift-Arc Trigger Hold TIG...

  • Page 26: Lift-Arc Trigger Hold Tig

    5-4. Lift-Arc Trigger Hold TIG TIG Electrode Workpiece Procedure requires: control Start sequence: • Touch tungsten electrode to workpiece at weld start point. • Momentarily depress output switch. • Slowly lift electrode. An arc will form when electrode is lifted. •...

  • Page 27: Section 6 − Maintenance & Troubleshooting

    SECTION 6 − MAINTENANCE & TROUBLESHOOTING 6-1. Routine Maintenance Disconnect power Maintain more often before maintaining. during severe conditions. 3 Months Repair Or Replace Replace Cracked Replace Damaged Or Torch Body Cracked Unreadable Cables Labels Repair Or Replace Cracked Cables And Cords Clean Tighten Weld...

  • Page 28: Voltmeter/Ammeter Help Displays

    6-3. Voltmeter/Ammeter Help Displays HE.L P−1 HE.L P−5 HE.L P−2 HE.L P−6 HE.L P−3 HE.L P−8 Indicates the left side of the unit has over- current limit. As the line voltage decreases, All directions are in reference to the front heated.
  • Page 29 Notes OM-257 486 Page 25...

  • Page 30: Section 7 − Electrical Diagram

    SECTION 7 − ELECTRICAL DIAGRAM Figure 7-1. Circuit Diagram OM-257 486 Page 26...
  • Page 31 956142946-C OM-257 486 Page 27...

  • Page 32: Section 8 − Parts List

    SECTION 8 − PARTS LIST 956142947_1-B Figure 8.1. Parts Assembly OM-257 486 Page 28...
  • Page 33 Item Dia. Part Mkgs. Description Quantity Figure 8.1. Parts Assembly ....216034 Wrapper (Includes Insulators and Safety Labels) ....
  • Page 34 Item Dia. Part Mkgs. Description Quantity Figure 8.1. Parts Assembly (Continued) ....234126 Nut, Conduit 1.000 Npt Knurled ........
  • Page 35 Item Dia. Part Mkgs. Description Quantity Figure 8.1. Parts Assembly (Continued) ....174992 Knob, Pointer .840 Dia X .250 Id W/Spring Clip−.21 ....
  • Page 36 Notes...
  • Page 38 Notes...
  • Page 39 Effective January 1, 2015 (Equipment with a serial number preface of MF or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions 90 Days —...
  • Page 40 File a claim for loss or damage during Phone: 39 (0) 2982901 Fax: 39 (0) 298290-203 shipment. email: miller@itw−welding.it For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. © ORIGINAL INSTRUCTIONS − PRINTED IN USA 2015 Miller Electric Mfg. Co. 2015−01...

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