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Manual de instrucciones Hobart Welding Products OM-950

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  • Hobart Welding Products OM-950 - page 1

    Processes 235 AC And 235/160 AC/DC OM-950 218 245B August 2005 Description Arc Welding Power Source Stick (SMAW ) W elding AC Models: AC/DC Models: STICKMA TE LX R ...

  • Hobart Welding Products OM-950 - page 2

    Hobart W elders manufactures a full line of welders and welding related equipment. For information on other quality Hobart products, contact your local Hobart distributor to receive the latest full line catalog or individual specification sheets. T o locate your nearest distributor or service agency call 1-877-Hobart1 or visit our website at www .H ...

  • Hobart Welding Products OM-950 - 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 . . . . . . . ...

  • Hobart Welding Products OM-950 - page 4

    ...

  • Hobart Welding Products OM-950 - page 5

    OM-950 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 messag ...

  • Hobart Welding Products OM-950 - page 6

    OM-950 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 of f 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 (s ...

  • Hobart Welding Products OM-950 - page 7

    OM-950 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. F A ...

  • Hobart Welding Products OM-950 - page 8

    OM-950 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 F4 ...

  • Hobart Welding Products OM-950 - page 9

    OM-950 Page 5 SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE A V ANT UTILISA TION fre_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 util isés Sy m bole graphique d’av ertis sement ! Attention ! Cette pro- cédur e c omporte d es risques p os sibl ...

  • Hobart Welding Products OM-950 - page 10

    OM-950 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 peau. ...

  • Hobart Welding Products OM-950 - page 11

    OM-950 Page 7 2-3 . Dangers s uppléme nt aire s en r e lation avec l’insta llation, le f onctionneme nt e t la m aintena 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? ...

  • Hobart Welding Products OM-950 - page 12

    OM-950 Page 8 2-5. Princi pales nor mes de sécu rit é Safety i n 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 eldi ...

  • Hobart Welding Products OM-950 - page 13

    OM-950 Page 9 SECTION 3 − DEFINITIONS 3-1. Symbols And Definitions A Amperes Single Phase Do Not Switch Under Load Input On Of f Output Hz Hertz Alternating Current Electrode Positive Electrode Negative Direct Current W elding Arc V V olts W ork Electrode 3-2. Manufacturer ’s Rating Labels 217 652-A / 165 371-A Rating Label For EN/FR Machines R ...

  • Hobart Welding Products OM-950 - page 14

    OM-950 Page 10 SECTION 4 − INST ALLA TION 4-1. Specifications AC/DC Models Mode Rated W elding Out p ut Amperage Ran g e Maximum Open- Circuit Amperes Input at Rated Load Output 50 Or 60 Hz, Single-Phase W eight Output Range Circuit V oltage 230 V AC 225 A @ 25 V olts AC, 20% Duty Cycle @ 60 Hz; 15% Duty Cycle @ 50 Hz Low: 30 − 150 High: 40 − ...

  • Hobart Welding Products OM-950 - page 15

    OM-950 Page 1 1 4-2. Duty Cycle Charts A. For AC/DC Models 2 Minutes W elding 8 Minutes Resting 086 727 Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating. Y 2 0% Duty Cycle at 225 Amperes. Ex- ceeding duty cycle can damage unit and void warranty . *These models have a 15% duty cycle when used with 50 Hz inp ...

  • Hobart Welding Products OM-950 - page 16

    OM-950 Page 12 4-3. V olt-Ampere Curves A. For AC/DC Models 193 509 / 193 510 The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities. Curves of other settings fall be- tween the curves shown. 0 10 20 30 40 50 60 70 80 0 50 100 150 200 250 DC Amperes DC V olts 0 10 20 30 40 50 60 70 80 90 0 50 100 150 200 250 30 ...

  • Hobart Welding Products OM-950 - page 17

    OM-950 Page 13 B. For AC Models 193 508 The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities. Curves of other settings fall be- tween the curves shown. 0 10 20 30 40 50 60 70 80 90 0 50 100 150 200 250 300 AC Amperes AC V olts A=LOW RANGE B=HIGH RANGE A A BB For 235A Models 4-4. Selecting A Location 804 292-A ...

  • Hobart Welding Products OM-950 - page 18

    OM-950 Page 14 4-5. Installing Electrode Holder And Work Clamp Y T urn Off unit and disconnect input power before installing electrode holder or work clamp. Removing Barrel From Electrode Holder 1 Electrode Holder 2 Barrel 3 Access Hole 4 Set Screw Loosen set screw through access hole and slide barrel away from electrode holder . Installing Electro ...

  • Hobart Welding Products OM-950 - page 19

    OM-950 Page 15 4-6. W eld Output Cables For weld output cable replacements or ex tensions, contact your Factory Authorized Service Agent. NOTE 4-7. Electrical Service Guide 50/60 Hz Single Phase Input V oltage 230 Input Amperes At Rated Output 47.5 Max Recommended Standard Fuse Rating In Amperes Circuit Breaker 1 , Time-Delay 2 50 Normal Operating ...

  • Hobart Welding Products OM-950 - page 20

    OM-950 Page 16 4-8. Connecting Input Power 802 246-A 1 =GND/PE Earth Ground 4 1 3 2 Y Disconnect and lockout/tag- ou t input power before instal- ling receptacle. Y Have only qualified persons make this installation. See rating label in Section 4 - 4, and be sure to supply correct in- put power . 1 Proper Receptacle (NEMA 6-50R) (User-Supplied) Rec ...

  • Hobart Welding Products OM-950 - page 21

    OM-950 Page 17 SECTION 5 − OPERA TION 5-1. Controls A. Controls For AC/DC Models Ref. 190 600-B / 802 105-D 1 Amperage Adjustment Control 2 Power Switch 3 Mode Switch For DC Weld Output Use mode switch to select polarity of dc output, Electrode Posi- tive/DCEP (+),or Electrode Nega- tive/DCEN ( − ). For AC Weld Output Use mode switch to select ...

  • Hobart Welding Products OM-950 - page 22

    OM-950 Page 18 B. Controls For AC Models Ref. 190 599-A / 802 105-D 1 Amperage Adjustment Control 2 Power Switch 3 Mode Switch Use mode switch to select ac low range or high range output. 3 1 2 ...

  • Hobart Welding Products OM-950 - page 23

    OM-950 Page 19 SECTION 6 − MAINTENANCE & TROUBLESHOOTING 6-1. Routine Maintenance Y Disconnect power before maintaining. 3 Months Replace Unreadable Labels Repair Or Replace Cracked Cables 6 Months 12 Months Blow Out Or V acuum Inside, During Heavy Service, Clean Monthly OR Lubricate Shunt Block (See Section 6-2) 6-2. Lubricating Shunt Block ...

  • Hobart Welding Products OM-950 - page 24

    OM-950 Page 20 6-3. Reinstalling Amperage Adjustment Indicator 804 293-A / Ref. 802 248-D / Ref. 190 599-A Y T urn Off welding power source and disconnect input power . 1 W rapper Remove wrapper from unit. 2 Crank Handle 3 Shunt Shaft 4 Transformer And Shunt (Located Inside Unit) Insert crank handle onto shunt shaft protruding through front panel a ...

  • Hobart Welding Products OM-950 - page 25

    OM-950 Page 21 6-4. T roubleshooting T rouble Remedy No weld output; fan does not run. Be sure line disconnect switch is in On position (see Section 4-8). Check and replace line fuses if open. Reset breakers if necessary (see Section 4-8). Fan does not run; weld output okay . Be sure nothing is blocking movement of fan. If fan does not run freely , ...

  • Hobart Welding Products OM-950 - page 26

    OM-950 Page 22 SECTION 7 − ELECTRICAL DIAGRAMS 191 364 Figure 7-1. Circuit Diagram For AC/DC (230 V olts) Models 191 362 WORK 230 PRI SEC T1 GRN VOL T ONL Y S2 AC HIGH AC LOW ELECTRODE PLG1 FM S1 Figure 7-2. Circuit Diagram For AC (230 V olts) Models ...

  • Hobart Welding Products OM-950 - page 27

    OM-950 Page 23 SECTION 8 − WELDING METHODS & TROUBLESHOOTING mod5.1* 9/92 A. W elding Methods 8-1. Shielded Metal Arc Welding (SMA W) Procedure 151 593 1 W orkpiece Make sure workpiece is clean before welding. 2 Work Clamp Place as close to the weld as possible. 3 Electrode A small diameter electrode requires less current than a large one. Fo ...

  • Hobart Welding Products OM-950 - page 28

    OM-950 Page 24 8-2. Electrode And Amperage Selection Chart Ref. 087 985-A 3/32 1/8 5/32 3/16 7/32 1/4 1/16 5/64 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 7/32 1/4 3/32 1/8 5/32 3/16 3/32 1/8 5/32 6010 & 601 1 6013 7014 7018 7024 Ni-Cl 308L 50 100 150 200 250 300 350 400 450 ELECTRODE ...

  • Hobart Welding Products OM-950 - page 29

    OM-950 Page 25 8-3. Striking An Arc S-0049 / S-0050 1 Electrode 2 W orkpiece 3 Arc Drag electrode across workpiece like striking a match; lift electrode slightly after touching work. If arc goes out electrode was lifted to high. If electrode sticks to work- piece, use a quick twist to free it. Bring electrode straight down to workpiece; then lift s ...

  • Hobart Welding Products OM-950 - page 30

    OM-950 Page 26 8-5. W eld Bead Characteristics Ref. S-0052-B 1 Large Spatter Deposits 2 Rough, Uneven Bead 3 Slight Crater During W elding 4 Bad Overlap 5 Poor Penetration 1 Fine Spatter 2 Uniform Bead 3 Moderate Crater During W elding W eld a new bead or layer for each 1/8 in (3.2 mm) thickness in metals being welded. 4 No Overlap 5 Good Penetrati ...

  • Hobart Welding Products OM-950 - page 31

    OM-950 Page 27 8-7. Electrode Movement During W elding S-0054-A 1 Stringer Bead − Steady Move- ment Along Seam 2 Weave Bead − Side T o Side Movement Along Seam 3 Weave Patterns Us e weave patterns to cover a wide area in one pass of the electrode. Do not let weave width exceed 2-1/2 times diameter of electrode. . A single stringer bead is satis ...

  • Hobart Welding Products OM-950 - page 32

    OM-950 Page 28 8-9. Lap Joints S-0063 / S-0064 1 Electrode 2 Single-Layer Fillet W eld Move electrode in circular motion. 3 Multi-Layer Fillet Weld W eld a second layer when a larger fillet is n eeded. Remove slag before making another weld pass. Weld both sides of joint for maximum strength. 30 ° Or Less Single-Layer Fillet Weld Multi-Layer Fille ...

  • Hobart Welding Products OM-950 - page 33

    OM-950 Page 29 T able 6-2. Excessive Spatter Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead. Possible Causes Corrective Actions Amperage too high for electrode. Decrease amperage or select larger electrode. Arc length too long or voltage too high Reduce arc length or voltage. T able 6-3. Incomplete ...

  • Hobart Welding Products OM-950 - page 34

    OM-950 Page 30 T able 6-5. Excessive Penetration Good Penetration Excessive Penetration − weld metal melt- ing through base metal and hanging un- derneath weld. Excessive Penetration Possible Causes Corrective Actions Excessive heat input. Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. T able 6-6. Burn ...

  • Hobart Welding Products OM-950 - page 35

    OM-950 Page 31 Notes 400 T rade Square East, T roy , Ohio 45373 1-800-332-9448 www.welding.org Over 80,000 trained since 1930! Start Y our Pr ofessional W elding Car eer Now! ...

  • Hobart Welding Products OM-950 - page 36

    OM-950 Page 32 SECTION 9 − P ARTS LIST 802 245-F . Hardware is common and not available unless listed. 27 7 6 8 5 4 11 10 23 3 14 18 25 24 22 22 21 20 19 18 17 16 15 13 12 9 2 1 26 Figure 9-1. Main Assembly (AC/DC model illustrated) ...

  • Hobart Welding Products OM-950 - page 37

    OM-950 Page 33 Description Part No. Dia. Mkgs. Item No. Figure 9-1. Main Assembly Quantity 1 224 794 LABEL, gen precautionary (electrode) 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 217 732 LABEL,Warning General Precautionary (En/Fr) V ert 1 . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Hobart Welding Products OM-950 - page 38

    Notes ...

  • Hobart Welding Products OM-950 - page 39

    Warranty Questions? Call 1-800-332-3281 7 AM − 6 PM EST hobart_warr 2/05 Service Y o u 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 or call 1-800-332-3281. The expertise of the distributor and Hobart is t ...

  • Hobart Welding Products OM-950 - page 40

    PRINTED IN USA © 2005 Hobart Welding Products. 6/05 Hoba rt We lding Product s An Illinois T ool W or ks Compa ny 600 W est Main Street Tr oy , OH 45373 USA For T ech nical Assistan ce: Call1-800-332-3281 Fo r Liter a tur e Or Nea rest Dea ler : Call 1-877-Hobart1 Model Name Serial/Style Number Purchase Date (Date which equipment was delivered to ...

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El manual de instrucciones, también determinado como el manual de usuario o simplemente instrucciones, es un documento técnico que tiene como objetivo ayudar a los usuarios a utilizar Hobart Welding Products OM-950. Las instrucciones normalmente las realiza un escritor técnico pero en un lenguaje comprensible para todos los usuarios de Hobart Welding Products OM-950.

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5. FAQ - las preguntas frecuentes
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