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OM-192 440A November 1998
Specifications Covered by this Manual:
903 702
Processes
Gas Metal Arc (MIG) Welding
Flux Cored Arc (FCAW)
Welding
Description
Arc Welding Power Source and Wire
Feeder
BETA-MIG 2250
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From Hobart to You Thank you and congratulations on choosing Hobart. 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. This Owner’s Manual is designed to help you get the most out of your Hobart products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite. We’ve made installation and operation quick and easy. With Hobart you can count on years of reliable service with
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TABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-3. Additional Symbols for Installation, Operation, and Maintenance . . . . . . .
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SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_5/97 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. This group of symbols means Warning! Watch Out! possible Marks a special safety message. ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions Means “Note”; not safety related. to avoid the hazards. 1-2. Arc Welding
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ARC RAYS can burn eyes and skin. BUILDUP OF GAS can injure or kill. Shut off shielding gas supply when not in use. Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays Always ventilate confined spaces or use that can burn eyes and skin. Sparks fly off from the approved air-supplied respirator. weld. Wear a welding helmet fitted with a proper shade of filter to protect your face and eyes when welding or watching (see ANSI Z49.1 and Z87.1 li
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1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. MOVING PARTS can cause injury. Do not install or place unit on, over, or near Keep away from moving parts such as fans. combustible surfaces. Keep all doors, panels, covers, and guards Do not install unit near flammables. closed and securely in place. Do not overload building wiring – be sure power supply system is properly sized, rated, and protected to handle this unit. FALLING UNIT can cau
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1-5. EMF Information Considerations About Welding And The Effects Of Low Frequency 1. Keep cables close together by twisting or taping them. Electric And Magnetic Fields 2. Arrange cables to one side and away from the operator. Welding current, as it flows through welding cables, will cause electro- magnetic fields. There has been and still is some concern about such fields. However, after examining more than 500 studies spanning 17 3. Do not coil or drape cables around your body. years of resea
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SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION som _nd_fre 5/97 1-1. Signification des symboles Signifie Mise en garde ! Soyez vigilant ! Cette procédure présente des risques de danger ! Ceux-ci sont identifiés par des symboles adjacents aux directives. Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des Identifie un message de sécurité particulier. risques de danger reliés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVEMENT et aux PIÈCES CHAUDES. Reportez-vous au
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LES RAYONS DE L’ARC peuvent pro- LES ACCUMULATIONS DE GAZ ris- voquer des brûlures dans les yeux et quent de provoquer des blessures ou sur la peau. même la mort. Le rayonnement de l’arc du procédé de soudage Fermer l’alimentation du gaz protecteur en cas de génère des rayons visibles et invisibles intenses non utilisation. (ultraviolets et infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées Veiller toujours à bien aérer les espaces
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1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance Risque D’INCENDIE OU DES ORGANES MOBILES peuvent D’EXPLOSION. provoquer des blessures. Ne pas placer l’appareil sur, au-dessus ou à proxi- Rester à l’écart des organes mobiles comme le mité de surfaces infllammables. ventilateur. Maintenir fermés et fixement en place les portes, Ne pas installer l’appareil à proximité de produits inflammables panneaux, recouvrements et dispositifs de Ne pa
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1-4. Principales normes de sécurité Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel- Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, ding Society, 550 N.W. Lejeune Rd, Miami FL 33126 de la Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202. Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. Règles de sécurité en soudage, coupage et procédés conne
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SECTION 2 – INTRODUCTION 2-1. Specifications Amps Input at Rated Output, 50 or 60 Hz, Single-Phase Max. Open Max. Open Circuit Circuit 200 V 230 V KVA KW Rated Output Voltage 200 A at 24 VDC, 40 35 8 6.8 60% Duty Cycle 35 1.1* 1.3* 0.31* 0.18* No Load Wire Feed Wire Type and Diameter Dimensions Weight Speed Solid Steel/ 90–750 IPM H: 31-1/4 in (794 mm) 185 lb Stainless Steel Aluminum Flux Cored (2.3–19 m/min) W: 18-7/8 in (479 mm) (84 kg) D: 36-1/2 in (927 mm) D: 36-1/2 in (927 mm) .023 – .045 i
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2-3. 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. va_curve1 4/95 – SB-192 436 2-4. Installing Welding Gun 1 Drive Assembly 2 Gun Securing Thumbscrew 3 Gun End Loosen thumbscrew. Insert gun end through opening until it bottoms against drive assembly. Tighten thumbscrew. 4 Gun Trigger Leads 1 Insert leads, one at a time, through 3 small grommet on front panel. Con- nect femal
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2-5. Installing Work Clamp 1 Work Cable Route cable out front panel opening from inside. 2 Negative (–/Black) Output Terminal 2 Connect cable to terminal. 3 Hardware 4 Work Clamp Route cable through clamp handle and secure as shown. Close door. 3 4 Tools Needed: 1 1/2, 3/4 in Ref. ST-802 285 / Ref. ST-801 566 2-6. Setting Gun Polarity For Wire Type 1 Polarity Changeover Label 2 Positive (+/Red) Output Terminal 3 Negative (–/Black) Output Terminal Always read and follow wire manufacturer’s recomm
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2-7. Installing Gas Supply Chain gas cylinder to running gear, wall, or other stationary support so cylinder cannot fall and break off valve. 1 1 Regulator/Flow Gauge Install so face is vertical. 2 Gas Hose Connection Fitting has 5/8-18 right-hand threads. 3 Flow Adjust Typical flow rate is 20 cfh (cubic 1 feet per hour). Check wire man- ufacturer’s recommended flow rate (see Section 3-2). This flow gauge can be adjusted between 5 and 25 cfh. Argon Gas 4CO Adapter 2 OR Customer Supplied 5 O-Ring
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2-9. Changing Input Voltage From 230 Volts To 200 Volts Cut cable ties as necessary. 1 230 Volt Transformer Lead/Fan Lead 2 Black Switch Lead 2 3 Tubing Locate lead marked 230 VAC. Slide tubing down and disconnect black switch lead from splice. Be sure 230 volt transformer lead and white fan lead remain spliced. 3 Fold tubing over 230 volt transform- er/fan lead splice and secure. 4 4 200 Volt Lead 200 VAC 1 Locate lead marked 200 VAC. Slide tubing down, and connect 200 230 VAC volt lead stub to
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2-11. Selecting A Location And Connecting Input Power 1 Rating Label Supply correct input power. 2 Plug 3 Receptacle Do not move or operate unit Connect plug to receptacle. where it could tip. 4 Input And Grounding 18 in (457 mm) of Conductors space for airflow Connect directly to line disconnect device if hard wiring is required. 5 Line Disconnect Device See Section 2-10. Special installation may be required where gasoline or volatile liquids are present – see NEC Article 511 or CEC Section
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2-12. Threading Welding Wire 1 Wire Spool 2 Welding Wire 3 Inlet Wire Guide 4 Pressure Adjustment Knob 5 Drive Roll 6 Outlet Wire Guide 4 7 Gun Conduit Cable Lay gun cable out straight. 7 Tools Needed: Ref. ST-802 285 12 3 5 6 Hold wire tightly to keep it from unraveling. 6 in 4 in (150 mm) (102 mm) Open pressure assembly. Pull and hold wire; cut off end. Push wire thru guides into gun; continue to hold wire. Tighten Close and tighten pressure Remove gun nozzle and contact tip. Turn On. assemb
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SECTION 3 – OPERATION 3-1. Controls 1 Wire Speed Control The scale around the control is per- cent, not wire feed speed. 2 Voltage Control The higher the selected number, the thicker the material that can be welded (see welding guide and Section 3-2). 3 Power Switch 1 2 3 Ref. ST-192 372 OM-192 440 Page 16
