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Miller Electric D-74D manual

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Table of contents for the manual

  • Page 1

    D-74S, D-74D Processes Description MIG (GMA W) W elding Flux Cored (FCA W ) Welding (Gas- And Self-Shielded) Wire Feeder OM-1500-6 206 805H 2006 − 05 File: MIG (GMA W) V isit our website at www.MillerWelds.com[...]

  • Page 2

    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 specification sheets. T o locate your nearest distributor or service agency call 1-800-4-A-Miller , or visit us at www .Mille[...]

  • Page 3

    T ABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Arc W elding Hazards 1 . . . . . . . [...]

  • Page 4

    dec_wire_6/05 Declaration of Conformity for European Community (CE) Products This information is provided for units with CE certification (see rating label on unit). NOTE Manufacturer : European Contact: Miller Electric Mg. Co. Mr . Danilo Fedolfi, 1635 W . Spencer St. Managing Director Appleton, WI 54914 USA ITW Welding Products Italy S.r .l. Phon[...]

  • Page 5

    OM-1500-6 Page 1 SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som _3/05 Y W arning: Protect yourself and others from injury — read and follow these precautions. 1-1. Symbol Usage Means W arning! W atch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Y Marks a special safety mes[...]

  • Page 6

    OM-1500-6 Page 2 Arc rays from the w elding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld. ARC RA YS can burn eyes and skin. D Wear an approved welding helmet fitted with a proper shade of fil- ter lenses to protect your face and eyes when welding or watching [...]

  • Page 7

    OM-1500-6 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 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

    OM-1500-6 Page 4 1-5. Principal Safety Standards Safety i n W elding, 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 W elding and Cut- ting of Containers and Piping , American Welding Society Standard A WS[...]

  • Page 9

    OM-1500-6 Page 5 SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE A V ANT UTILISA TION som _3/05 Y A vertissement : se protéger et protéger les autres contre le risque de blessure — lire et respecter ces consignes. 2-1. Symbo les ut ilisés Sy mbole graphique d’avert iss ement ! Att ention ! Cette pro - cédur e comporte d es r i sques poss ibl[...]

  • Page 10

    OM-1500-6 Page 6 Le rayonnement de l’arc du procédé de soudage génère des rayons visibles et invisibles intenses (ultraviolets et infrarouges) susceptibles de provo- quer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées pendant le soudage. LES RA YONS D’ARC peuvent entraî- ne r des brûlures aux yeux et à la pea[...]

  • Page 11

    OM-1500-6 Page 7 2-3 . Dange rs suppléme ntaire s en r e lation avec l’installa tion, le f onctionne ment et l a maintena nce Risque D’INCENDIE OU D’EXPLO- SION. D Ne pas placer l’appareil sur , au-dessus ou à proximité de surfaces inflammables. D Ne pas installer l’appareil à proximité de produits inflammables. D Ne pas surcharger l[...]

  • Page 12

    OM-1500-6 Page 8 2-5. Princi pales no rmes de sécurit é Safety in W elding, Cutting, and Allied Processes, ANSI Standard Z49.1, de Global Engineering Documents (téléphone : 1-877-413-5184, site In- ternet : www .global.ihs.com). Recommended Safe Practices fo r the Preparati on for W elding and Cut- ting of Containers and Piping , American W eld[...]

  • Page 13

    OM-1500-6 Page 9 SECTION 3 − DEFINITIONS 1 1.1 1.2 1.3 3 3.1 3.2 3.3 4 4.1 + 2 2.1 2.2 + + 56 + 2.3 S-178 936 A. W arning! Watch Out! There are possible hazards as shown by the symbols. B. Drive rolls can injure fingers. C. W elding wire and drive parts are at welding voltage during operation − keep hands and metal objects clear . 1 Electric sh[...]

  • Page 14

    OM-1500-6 Page 10 ST-178 794-A 50/60 S/N: 24 10.0 Hz 50/60 IP 21 V 100 A 750 X 100 % V U 1 = A I 1 = 1 U 2 = I 2 = 3-2. Rating Label For CE Products For label location see Section 5-3. 3-3. Symbols And Definitions Some symbols are found only on CE products. Note A Amperes V V olts Alternating Current X Duty Cycle IP Degree Of Protection Hz Hertz Pr[...]

  • Page 15

    OM-1500-6 Page 1 1 SECTION 4 − INTRODUCTION 4-1. Specifications T ype of Input Power W elding Power Source T ype Wire Feed Speed Range Wire Diameter Range W elding Circuit Rating IP Rating Overall Dimensions W eight 24 V olts AC Single-Phase 10 Amperes 50/60 Hertz Constant V oltage (CV) DC With 14-Pin And Contactor Control Standard: 50 T o 780 ip[...]

  • Page 16

    OM-1500-6 Page 12 5-2. Equipment Connection Diagrams 1 W elding Power Source 2 Contactor Control/Power Cord 3 Positive (+) Weld Cable 4 Negative ( − ) W eld Cable 5 W orkpiece 6 Welding Gun 7 Wire Feeder 8 Gas Hose 9 Gas Cylinder and Regulator (Customer Supplied) . Shielding gas pressure not to exceed 100 PSI (689 kPa). 803 068 1 2 3 4 5 6 7 8 9[...]

  • Page 17

    OM-1500-6 Page 13 5-3. Rear Panel Connections And Rotating Drive Assembly 803 067 / 802 825-A 2 1 14-Pin Control Cable - 10 Ft (3.0 m) 2 Shielding Gas V alve Fittings Requires fitting with 5/8-18 right- hand threads. Connect customer- supplied gas hose. 3 Weld Cable T erminal 4 Jumper Weld Cable 5 Weld Cable 6 Drive Assembly 7 Drive Assembly Rotati[...]

  • Page 18

    OM-1500-6 Page 14 5-4. 14-Pin Plug Information Pin* Pin Information A 24 volts ac with respect to socket G. A J K B Contact closure to A completes 24 volts ac contactor control circuit. A J B K I L G Circuit common for 24 volts ac circuit. C L N H D M G C +10 volts dc input from power source to wire feeder with respect to socket D. D M G E F D Remo[...]

  • Page 19

    OM-1500-6 Page 15 5-7. Installing And Threading W elding Wire Ref. 156 929-A / Ref. 150 922 / Ref. 156 930 / S-0627-A T ools Needed: . For best wire feeding performance, be sure that the outlet cable has the proper size liner for the welding wire size being used. Also, when the gun is installed, the liner extending from the back of the gun should b[...]

  • Page 20

    OM-1500-6 Page 16 5-8. Setting Internal DIP Switches Position Settings And Results For DIP Switch S1 On PC1 And PC101 On = Current detect over- ride. For welding power sources that don’t provide current feedback through the 14-pin receptacle. Run- in is inactive. Off = Current must be detected from power sources that provide current feedback thro[...]

  • Page 21

    OM-1500-6 Page 17 T ools Needed: 1/4 in 5-9. Optional Equipment DIP Switch Settings 12 3 45 Or Or High Speed Motor Meters/Minute High Speed Motor Inches/Minute Standard Motor Meters/Minute Standard Motor Inches/Minute Digital Meter Functions 12 3 45 12 3 45 12 3 45 803 069 Remove wrapper . 1 Digital Meter Board PC60 2 Meter Board Switch S2 Install [...]

  • Page 22

    OM-1500-6 Page 18 SECTION 6 − OPERA TION 6-1. Power Switch 1 Power Switch 1 Ref. 803 065 1 Left/Right Select Switch Pressing the Left/Right Select switch allows the operator to choose which side of the unit’ s con- trols will operate. 6-2. Left/Right Select Switch 1 Ref. 803 048 6-3. Jog/Purge Pressing the Jog/Purge switch allows the op- erator[...]

  • Page 23

    OM-1500-6 Page 19 6-4. T rigger Hold Switch 1 T rigger Hold Switches T rigger hold allows the operator to weld without holding the gun trigger . • T o use the trigger hold function, place the trigger hold switch in the On position. • The operator must hold the trig- ger for a minimum of 2 seconds, bu t not longer than 6 seconds be- fore releasi[...]

  • Page 24

    OM-1500-6 Page 20 SECTION 7 − MAINTENANCE 7-1. Routine Maintenance Y Disconnect power before maintaining. 3 Months Replace unreadable labels. Clean and tighten weld terminals. Repair or replace cracked weld cable. Check 14-pin cord. Check gas hose and fittings. Check gun cable. Replace cracked parts. 6 Months Blow out or vacuum inside. During hea[...]

  • Page 25

    OM-1500-6 Page 21 7-2. Diagnostics 803 063-A 1 LED3 On Right Side Motor Control Board PC1 2 LED3 On Left Side Motor Control Board PC101 3 LED3 On Dual Board PC70 2 1 3 Display On Optional Meter LED3 Sequence Indicated Error Left Side Motor Control HELP 1 1 1 Blink Communication Error Left Side Motor Control Board PC101 HELP 12 2 Blinks Trigger Erro[...]

  • Page 26

    OM-1500-6 Page 22 7-3. T roubleshooting Y Disconnect power before troubleshooting T rouble Remedy Wire feeds, shielding gas flows, but electrode wire is not energized. Check cable connections. Check cables for continuity , and repair or replace cables if necessary (see Section 5-3). Wire feeder is on, display does not light up, motor does not run, [...]

  • Page 27

    OM-1500-6 Page 23 Notes[...]

  • Page 28

    OM-1500-6 Page 24 SECTION 8 − ELECTRICAL DIAGRAM Figure 8-1. Circuit Diagram[...]

  • Page 29

    OM-1500-6 Page 25 204 716-B[...]

  • Page 30

    OM-1500-6 Page 26 SECTION 9 − P ARTS LIST 803 050-A . Hardware is common and not available unless listed. 14 6 7 10 9 8 11 5 12 11 10 15 19 20 16 17 18 3 2 1 22 4 Fig.9 − 3 21 Fig.9 − 2 9 13 Figure 9-1. Main Assembly[...]

  • Page 31

    OM-1500-6 Page 27 Description Part No. Item No. Figure 9-1. Main Assembly Quantity 1 159 647 Insulator , Motor Clamp 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 159 646 Clamp, Motor Base 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 32

    OM-1500-6 Page 28 803 049-C . Hardware is common and not available unless listed. 7 3 4 5 6 8 9 10 11 12 5 13 14 16 4 2 15 19 18 17 26 20 21 22 22 21 23 24 25 1 27 Figure 9-2. Control Box Quantity Description Part No. Dia. Mkgs. Item No. Model D-74S D-74D Figure 9-2. Control Box (Figure 9-1 Item 21) 1 204 722 Wrapper , feeder 1 1 . . . . . . . . . [...]

  • Page 33

    OM-1500-6 Page 29 Quantity Description Part No. Dia. Mkgs. Item No. Model D-74S D-74D Figure 9-2. Control Box (Continued) 18 R1, R101 073 562 Potentiometer, cp std slot 1t 2. w 10k linear D-74S 2 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 R1, 101, 70, 170 224 597 Potentiometer , cermet std flat 3.75t 2 w 10k linear D-74D 0 4 . . . .[...]

  • Page 34

    OM-1500-6 Page 30 See T able 9-1 For Drive Roll & Wire Guide Kits . Hardware is common and not available unless listed. 803 790-A 20 11 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 1 2 3 4 5 6 22 21 19 18 17 16 15 14 19 13 12 11 9 10 8 7 6 5 4 3 2 1 Figure 9-3. Drive Assembly , Wire Quantity Description Part No. Dia. Mkgs. Item No. Model D-74S [...]

  • Page 35

    OM-1500-6 Page 31 Quantity Description Part No. Dia. Mkgs. Item No. Model D-74S D-74D Figure 9-3. Drive Assembly , Wire (Continued) 203 642 Pressure Arm, R & V ert L 4 Roll (consisting of) 1 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 631 Pressure Arm, S/L & V ert S/R 4 Roll (consisting of) 1 1 [...]

  • Page 36

    OM-1500-6 Page 32 .023-.025 in. 0.6 mm 151 024 087 130 .030 in. 0.8 mm 151 025 053 695 .035 in. 0.9 mm 151 026 053 700 151 036 072 000 151 052 132 958 .045 in. 1.1/1.2 mm 151 027 053 697 151 037 053 701 151 053 132 957 151 070 083 489 .052 in. 1.3/1.4 mm 151 028 053 698 151 038 053 702 151 054 132 956 151 071 083 490 1/16 in. 1.6 mm 151 029 053 699[...]

  • Page 37

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  • Page 39

    Warranty Questions? Call 1-800-4-A-MILLER for your local Miller distributor. miller_warr 2006 − 01 Y our distributor also gives you ... Service Y ou always get the fast, reliable response you need. Most replacement parts can be in your hands in 24 hours. Support Need fast answers to the tough welding questions? Contact your distributor . The expe[...]

  • Page 40

    PRINTED IN USA © 2006 Miller Electric Mfg. Co. 2006 − 01 Miller Elect ric Mfg. Co. An Illinois T ool W orks Compa ny 1635 West S pencer S treet Applet on, WI 5 4914 US A International He adquarters − US A USA Phone: 920-735-4505 Aut o-At tended USA & Canada F A X: 9 20-735-4134 Int ernati onal F AX : 920-735-4125 European Headqua rters −[...]