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Miller Electric Migmatic 271 Owner's Manual

Arc welding power source wire feeder
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Migmatic
271/273/293/333/383
OM-223 194E
2006−09
Effective with serial number 226 213
Processes
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
Description
Arc Welding Power Source
Wire Feeder
R

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Summary of Contents for Miller Electric Migmatic 271

  • Page 1 271/273/293/333/383 www.MillerWelds.com OM-223 194E Effective with serial number 226 213 Processes Description Arc Welding Power Source Wire Feeder Migmatic 2006−09 MIG (GMAW) Welding Flux Cored (FCAW) Welding...
  • Page 2 Warranty and service information for your particular model are also provided. Miller Electric manufactures a full line of welders and welding related equipment. For information on other quality Miller products, contact your local Miller distributor to receive the latest full line catalog or individual catalog sheets.

  • Page 3: Table Of Contents

    ..............4-1. Controls for Migmatic 271/273 4-2.
  • Page 4 Via Privata Iseo 6/E 20098 San Giuliano Milanese, Italy Phone: 39(02)98290-1 European Contact Signature: Migmatic 271/273/293/333/383 Declares that this product: conforms to the following Directives and Standards: Electromagnetic Compatibility Directives: 89/336/EEC And their amendments 91/368/EEC, 92/31/EEC, 93/44/EEC, 93/68/EEC, 98/37/EC Electromagnetic compatibility (EMC) EN50199: August 1995...

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

    DC constant voltage (wire) welder, 2) a DC manual (stick) welder, or 3) an AC welder with reduced open-circuit volt- age. In most situations, use of a DC, constant voltage wire welder is recommended. And, do not work alone! D Disconnect input power or stop engine before installing or servicing this equipment.
  • Page 6 D Do not use welder to thaw frozen pipes. D Remove stick electrode from holder or cut off welding wire at contact tip when not in use.

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

    1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. D Do not install or place unit on, over, or near combustible surfaces. D Do not install unit near flammables. D Do not overload building wiring − be sure power supply system is properly sized, rated, and protected to handle this unit.

  • Page 8: Principal Safety Standards

    1-5. Principal Safety Standards Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, from Global Engineering Documents (phone: 1-877-413-5184, website: www.global.ihs.com). Recommended Safe Practices for the Preparation for Welding and Cut- ting of Containers and Piping, American Welding Society Standard F4.1 from Global...

  • Page 9: Section 2 − Definitions

    SECTION 2 − DEFINITIONS Warning! Watch Out! There are possible hazards as shown by the symbols. Electric shock can kill. 1.1 Wear dry insulating gloves. Do not touch electrode with bare hand. Do not wear wet or damaged gloves. 1.2 Protect yourself from electric shock by insulating yourself from work and ground.
  • Page 10 OM-223 194 Page 6 S-176 106 Warning! Watch Out! There are possible hazards as shown by the symbols. Electric shock from wiring can kill. Disconnect input plug or power before working on machine. Read the Owner’s Manual before working on this machine. Consult rating label for input power requirements, and check power available at the...
  • Page 11 Place terminal strips as shown. Place terminal strips as shown. Do not discard this product with general waste. Reuse or recycle Waste Electrical and Electronic Equipment (WEEE) by disposing at a designated collec- tion facility. Contact your local recycling office or your local distributor for further information.

  • Page 12: Section 3 − Installation

    SECTION 3 − INSTALLATION 3-1. Specifications Rated Output 100% Model 110 A 20.0 V Wire feed speed range 1.3 mpm to 20 mpm. * While idling Rated Output 100% Model 145 A 21.0 V Wire feed speed range 1.3 mpm to 20 mpm. * While idling Rated Output 100%...

  • Page 13: Duty Cycle And Overheating

    The volt-ampere curves show the normal minimum and maximum voltage and amperage output capabilities of the welding power source. Curves of other settings fall between the curves shown. % DUTY CYCLE 4 Minutes Resting Minutes Model 271 Model 293 Model 333 Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating.

  • Page 14: Installing Gas Supply

    3-4. Installing Gas Supply 3-5. Installing Wire Spool and Adjusting Hub Tension When a slight force is needed to turn spool, tension is set. Tools Needed: OM-223 194 Page 10 Argon Gas Ref. ST-148 265-B / Ref. ST-149 827-B / Ref. ST-158 697-A Chain gas cylinder to running gear, wall, or other stationary support so cylinder cannot fall and break off...

  • Page 15: Positoning Jumper Links (230/400V 3-Phase Models)

    3-6. Positoning Jumper Links (230/400V 3-Phase Models) 3-7. Electrical Service Guide Migmatic Model Input Voltage Input Amperes at Rated Output Max Recommended Standard Fuse or Circuit Breaker Rating in Am- peres ** Input Conductor Size in mm ** Grounding Conductor Size in ** Power cord supplied with the unit is sized for 230V operation.

  • Page 16: Selecting A Location And Connecting Input Power (1-Phase And 3-Phase)

    3-8. Selecting a Location and Connecting Input Power (1-Phase and 3-Phase) Have only qualified persons make this installation. Rating Label Supply correct input power. 18 in (457 mm) for airflow GND/PE GND/PE Connect First Connect First 1-Phase Primary Connection 3-Phase Primary Connection OM-223 194 Page 12...

  • Page 17: Installing Drive Rolls And Wire Guide

    3-9. Installing Drive Rolls and Wire Guide Tools Needed: 5/64 in 7/16 in 3-10. Aligning Drive Rolls and Wire Guide Tools Needed: Correct Incorrect Securing Screw Inlet Wire Guide Loosen screw. Slide tip as close to drive rolls as possible without touching.

  • Page 18: Threading Welding Wire And Adjusting Pressure Roll Tension

    3-11. Threading Welding Wire and Adjusting Pressure Roll Tension Open pressure assembly. Tighten Close and tighten pressure assembly, and let go of wire. Press gun trigger until wire comes out of gun. Reinstall contact tip and nozzle OM-223 194 Page 14 Hold wire tightly to keep it from unraveling.

  • Page 19: Using Gun/Cable Holder

    3-12. Using Gun/Cable Holder 3-13. Setting Gun Polarity for Wire Type (Optional) Side Panel Latch Cable Holder Press latch down to release and open door. Holster (2) Wrap cable around cable holder, and place gun nozzle into holster. Ref. 802 726-A Terminal Cover Protects Polarity Change over ter- minals from accidental contact.

  • Page 20: Section 4 − Operation

    SECTION 4 − OPERATION 4-1. Controls for Migmatic 271/273 4-2. Controls for Migmatic 293/333 OM-223 194 Page 16 6 in Voltage Control Turn control clockwise to increase voltage. 2T/4T Trigger Hold Function Latching Torch Trigger Power Switch Work Lead Connection...

  • Page 21: Controls For Migmatic 383

    4-3. Controls for Migmatic 383 4-4. Run-In, Burnback (Optional) and Spot Weld Timer Controls Voltage Control (Fine Adjust) Turn control clockwise to increase voltage. Voltage Control (Coarse Adjust) Turn control clockwise to increase voltage. 2T/4T Trigger Hold Function Latching Torch Trigger Power Switch Work Lead Connection −...

  • Page 22: Section 5 − Maintenance &Troubleshooting

    SECTION 5 − MAINTENANCE &TROUBLESHOOTING 5-1. Routine Maintenance 3 Months Replace unreadable labels Clean and tighten weld terminals 6 Months Blow out or vacuum inside. 5-2. Circuit Breaker CB1 5-3. Unit Overload Thermal switches TP1 in XFMR and TP2 in SR1 protect the unit from damage due to overheating. If the thermal indica- tor illuminates, wait for unit to cool allowing fan motor to run before trying to weld.

  • Page 23: Troubleshooting

    5-4. Troubleshooting Trouble Remedy No weld output; wire does not feed. Be sure line disconnect switch is On (see Section 3-8). Replace building line fuse or reset circuit breaker if open. Reset circuit breaker CB1 (see Section 5-2). Secure gun trigger connections. Check continuity of power switch S1 and replace if necessary.
  • Page 24 Notes OM-223 194 Page 20...

  • Page 25: Section 6 − Electrical Diagrams

    SECTION 6 − ELECTRICAL DIAGRAMS 271−Sept 27, 2005 Figure 6-1. Circuit Diagram for Migmatic 271 OM-223 194 Page 21...
  • Page 26 273−Sept 27, 2006 Figure 6-2. Circuit Diagram for Migmatic 273 (400 VAC) OM-223 194 Page 22...
  • Page 27 293−Sept 27, 2006 Figure 6-3. Circuit Diagram for Migmatic 293 (400 VAC) OM-223 194 Page 23...
  • Page 28 333− Sept 27, 2005 Figure 6-4. Circuit Diagram for Migmatic 333 (400 VAC) OM-223 194 Page 24...
  • Page 29 383−Sept 27 2005 Figure 6-5. Circuit Diagram for Migmatic 383 (400 VAC) OM-223 194 Page 25...

  • Page 30: Section 7 − Parts List

    SECTION 7 − PARTS LIST Figure 7-1. Wrapper Assembly, All Models OM-223 194 Page 26...
  • Page 31 156122059 Side Panel, L/H side lower ..316029698 Nameplate, upper Migmatic 271 and 273 ..316029699 Nameplate, upper Migmatic 293/333 . . .
  • Page 32 Figure 7-2. Main Assembly for Migmatic 271 April 17, 2006 OM-223 194 Page 28...
  • Page 33 000058427 Description Figure 7-2. Main Assembly for Migmatic 271 Tool tray ........... .
  • Page 34 Figure 7-3. Main Assembly for Migmatic 273 April 17, 2006 OM-223 194 Page 30...
  • Page 35 Item Dia. Part Mkgs....000197555 ....V57052030 .
  • Page 36 Figure 7-4. Main Assembly for Migmatic 293 April 17, 2006 OM-223 194 Page 32...
  • Page 37 Item Dia. Part Mkgs....000197555 ....V57052030 ..
  • Page 38 April 17, 2006 Figure 7-5. Main Assembly for Migmatic 333 OM-223 194 Page 34...
  • Page 39 Item Dia. Part Mkgs....000197555 ....V57052030 ..
  • Page 40 April 17, 2006 Figure 7-6. Main Assembly for Migmatic 383 OM-223 194 Page 36...
  • Page 41 Item Dia. Part Mkgs....000197555 ....V57052030 ..
  • Page 42 See Table 7-1 Drive Roll & Wire Guide Kits Hardware is common and not available unless listed. Item Part Figure 7-7 Wire Drive and Gears ..057010052 Motor, 24 VDC 185 rpm .
  • Page 43 See Table 7-2 Drive Roll & Wire Guide Kits Hardware is common and not available unless listed. Item Part Figure 7-8 Wire Drive and Gears ..057010051 Motor, 24 VDC 185 rpm .
  • Page 44 Table 7-1. Drive Roll And Wire Guide Kits (2 Roll Models) NOTE Base selection of drive rolls upon the following recommended usages: 1. V-Grooved rolls for hard wire. 2. U-Grooved rolls for soft and soft shelled cored wires. 3. U-Cogged rolls for extremely soft shelled wires (usually hard surfacing types). 4.
  • Page 45 Notes...
  • Page 46 Notes...
  • Page 47 Effective January 1, 2006 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 below, ITW Welding Products Italy S.r.l., warrants to its original retail purchaser that new Miller equipment sold after the effective date of this limited warranty is free of defects in material and workmanship at the time it is shipped by Miller.
  • Page 48 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. 2006 Miller Electric Mfg. Co. 1/06 TW Welding Products Italy S.r.l. Via Privata Iseo, 6/E 20098 San Giuliano Milanese, Italy...

This manual is also suitable for:

Migmatic 273Migmatic 333Migmatic 293Migmatic 383

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