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OM-355 188 290J July 2002 Processes TIG (GTAW) Welding Stick (SMAW) Welding Description Arc Welding Power Source R Syncrowave 180 SD Visit our website at www.MillerWelds.com 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. Like you, his customers couldn’t afford anything less. Miller products had to be more than the best they could be. They had to be the best you could buy. Today, the people that build and sell Miller products continue the tradition. They’re just as committed to providing equipment and service that meets the high standards of quality and value established in 1929. This Owner’s Manual is designed to help you get the most out of your Miller 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 Miller you can count on years of reliable service with proper maintenance. And if for some reason the unit needs repair, there’s a Troubleshooting section that will help you figure out what the problem is. The Miller is the first welding parts list will then help you to decide the equipment manufacturer in exact part you may need to fix the problem. the U.S.A. to be registered to the ISO 9001 Quality System Warranty and service information for your Standard. particular model are also provided. Working as hard as you do – every power source from Miller is backed by the most hassle-free warranty in the business. Miller offers a Technical Manual which provides more detailed service and parts information for your unit. To obtain a Technical Manual, contact your local distributor. Your distributor can also supply you with Welding Process Manuals such as SMAW, GTAW, GMAW, and GMAW-P. 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 orindividual catalog sheets. To locate your nearest distributor or service agency call 1-800-4-A-Miller, or visit us at www.MillerWelds.com on the web. TABLE OF CONTENTS WARNING This product, when used for welding or cutting, produces fumes or gases which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health & Safety Code Section 25249.5 et seq.) SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3. Additional Symbols for Installation, Operation, and Maintenance . . . . . . . . . . . . . . . . . . . . . . . 1-4. Principal Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5. EMF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION . . . . . . . . . . . . . . . . . . . . . 1-1. Signification des symboles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Dangers relatifs au soudage à l’arc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4. Principales normes de sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5. Information sur les champs électromagnétiques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 2 – INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1. Included with Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2. Selecting A Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3. Dimensions And Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5. Duty Cycle Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6. Volt-Ampere Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7. Weld Output Terminals And Selecting Cable Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8. Remote 14 Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9. Shielding Gas Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10. Electrical Service Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11. Connecting Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 3 – OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2. Example of Front Panel Amperage Control For Stick (SMAW) Welding . . . . . . . . . . . . . . . . . 3-3. Example of Remote Amperage Control For TIG (GTAW) Welding . . . . . . . . . . . . . . . . . . . . . 3-4. Typical TIG Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5. Typical Stick Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6. Process and Material Thickness Guide Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 4 – MAINTENANCE AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1. Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2. Adjusting Spark Gaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 5 – ELECTRICAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 6 – HIGH FREQUENCY (HF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1. Welding Processes Using HF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2. Sources Of HF Radiation From Incorrect Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3. Correct Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 7 – SELECTING AND PREPARING TUNGSTEN ELECTRODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1. Selecting Tungsten Electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2. Safety Information About Tungsten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3. Preparing Tungsten For DC Electrode Negative (DCEN) Welding . . . . . . . . . . . . . . . . . . . . . SECTION 8 – GUIDELINES FOR TIG WELDING (GTAW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1. Positioning The Torch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2. Torch Movement During Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3. Positioning Torch Tungsten For Various Weld Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 9 – STICK WELDING (SMAW) GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SECTION 10 – PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OPTIONS AND ACCESSORIES WARRANTY 1 1 1 3 3 4 5 5 5 7 8 8 9 9 9 10 10 10 11 11 12 12 13 13 14 14 15 15 16 17 17 18 18 19 19 20 21 21 21 22 23 23 23 24 25 25 26 27 28 36 SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_4/98 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Y Marks a special safety message. . Means “Note”; not safety related. This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid the hazards. 1-2. Arc Welding Hazards Y The symbols shown below are used throughout this manual to call attention to and identify possible hazards. When you see the symbol, watch out, and follow the related instructions to avoid the hazard. The safety information given below is only a summary of the more complete safety information found in the Safety Standards listed in Section 1-4. Read and follow all Safety Standards. D If earth grounding of the workpiece is required, ground it directly with a separate cable. Y Only qualified persons should install, operate, maintain, and repair this unit. D Wear a safety harness if working above floor level. D Keep all panels and covers securely in place. Y During operation, keep everybody, especially children, away. D Clamp work cable with good metal-to-metal contact to workpiece or worktable as near the weld as practical. ELECTRIC SHOCK can kill. Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work circuit is electrically live whenever the output is on. The input power circuit and machine internal circuits are also live when power is on. In semiautomatic or automatic wire welding, the wire, wire reel, drive roll housing, and all metal parts touching the welding wire are electrically live. Incorrectly installed or improperly grounded equipment is a hazard. D Do not touch electrode if you are in contact with the work, ground, or another electrode from a different machine. D Use only well-maintained equipment. Repair or replace damaged parts at once. Maintain unit according to manual. D Insulate work clamp when not connected to workpiece to prevent contact with any metal object. D Do not connect more than one electrode or work cable to any single weld output terminal. SIGNIFICANT DC VOLTAGE exists after removal of input power on inverters. D Turn Off inverter, disconnect input power, and discharge input capacitors according to instructions in Maintenance Section before touching any parts. D Do not touch live electrical parts. D Wear dry, hole-free insulating gloves and body protection. D Insulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work or ground. D Do not use AC output in damp areas, if movement is confined, or if there is a danger of falling. D Use AC output ONLY if required for the welding process. D If AC output is required, use remote output control if present on unit. D Disconnect input power or stop engine before installing or servicing this equipment. Lockout/tagout input power according to OSHA 29 CFR 1910.147 (see Safety Standards). D Properly install and ground this equipment according to its Owner’s Manual and national, state, and local codes. D Keep your head out of the fumes. Do not breathe the fumes. D Always verify the supply ground – check and be sure that input power cord ground wire is properly connected to ground terminal in disconnect box or that cord plug is connected to a properly grounded receptacle outlet. D When making input connections, attach proper grounding conductor first – double-check connections. D Frequently inspect input power cord for damage or bare wiring – replace cord immediately if damaged – bare wiring can kill. D Turn off all equipment when not in use. D Do not use worn, damaged, undersized, or poorly spliced cables. D Do not weld in locations near degreasing, cleaning, or spraying operations. The heat and rays of the arc can react with vapors to form highly toxic and irritating gases. D Do not drape cables over your body. FUMES AND GASES can be hazardous. Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health. D If inside, ventilate the area and/or use exhaust at the arc to remove welding fumes and gases. D If ventilation is poor, use an approved air-supplied respirator. D Read the Material Safety Data Sheets (MSDSs) and the manufacturer’s instructions for metals, consumables, coatings, cleaners, and degreasers. D Work in a confined space only if it is well ventilated, or while wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding fumes and gases can displace air and lower the oxygen level causing injury or death. Be sure the breathing air is safe. D Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless the coating is removed from the weld area, the area is well ventilated, and if necessary, while wearing an air-supplied respirator. The coatings and any metals containing these elements can give off toxic fumes if welded. OM-355 Page 1 ARC RAYS can burn eyes and skin. Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld. D 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 listed in Safety Standards). D Wear approved safety glasses with side shields under your helmet. D Use protective screens or barriers to protect others from flash and glare; warn others not to watch the arc. D Wear protective clothing made from durable, flame-resistant material (leather and wool) and foot protection. BUILDUP OF GAS can injure or kill. D Shut off shielding gas supply when not in use. D Always ventilate confined spaces or use approved air-supplied respirator. HOT PARTS can cause severe burns. D Do not touch hot parts bare handed. D Allow cooling period before working on gun or torch. MAGNETIC FIELDS can affect pacemakers. WELDING can cause fire or explosion. Welding on closed containers, such as tanks, drums, or pipes, can cause them to blow up. Sparks can fly off from the welding arc. The flying sparks, hot workpiece, and hot equipment can cause fires and burns. Accidental contact of electrode to metal objects can cause sparks, explosion, overheating, or fire. Check and be sure the area is safe before doing any welding. D Protect yourself and others from flying sparks and hot metal. D Do not weld where flying sparks can strike flammable material. D Remove all flammables within 35 ft (10.7 m) of the welding arc. If this is not possible, tightly cover them with approved covers. D Be alert that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. D Watch for fire, and keep a fire extinguisher nearby. D Be aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side. D Do not weld on closed containers such as tanks, drums, or pipes, unless they are properly prepared according to AWS F4.1 (see Safety Standards). D Connect work cable to the work as close to the welding area as practical to prevent welding current from traveling long, possibly unknown paths and causing electric shock and fire hazards. 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. D Wear oil-free protective garments such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap. D Remove any combustibles, such as a butane lighter or matches, from your person before doing any welding. FLYING METAL can injure eyes. D Welding, chipping, wire brushing, and grinding cause sparks and flying metal. As welds cool, they can throw off slag. D Wear approved safety glasses with side shields even under your welding helmet. OM-355 Page 2 D Pacemaker wearers keep away. D Wearers should consult their doctor before going near arc welding, gouging, or spot welding operations. NOISE can damage hearing. Noise from some processes or equipment can damage hearing. D Wear approved ear protection if noise level is high. CYLINDERS can explode if damaged. Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Since gas cylinders are normally part of the welding process, be sure to treat them carefully. D Protect compressed gas cylinders from excessive heat, mechanical shocks, slag, open flames, sparks, and arcs. D Install cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping. D Keep cylinders away from any welding or other electrical circuits. D Never drape a welding torch over a gas cylinder. D Never allow a welding electrode to touch any cylinder. D Never weld on a pressurized cylinder – explosion will result. D Use only correct shielding gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them and associated parts in good condition. D Turn face away from valve outlet when opening cylinder valve. D Keep protective cap in place over valve except when cylinder is in use or connected for use. D Read and follow instructions on compressed gas cylinders, associated equipment, and CGA publication P-1 listed in Safety Standards. 1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. MOVING PARTS can cause injury. 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. D Keep away from moving parts such as fans. D Keep all doors, panels, covers, and guards closed and securely in place. FALLING UNIT can cause injury. H.F. RADIATION can cause interference. D Use lifting eye to lift unit only, NOT running gear, gas cylinders, or any other accessories. D Use equipment of adequate capacity to lift and support unit. D If using lift forks to move unit, be sure forks are long enough to extend beyond opposite side of unit. D OVERUSE can cause OVERHEATING D D Allow cooling period; follow rated duty cycle. D Reduce current or reduce duty cycle before starting to weld again. D Do not block or filter airflow to unit. D D D High-frequency (H.F.) can interfere with radio navigation, safety services, computers, and communications equipment. D Have only qualified persons familiar with electronic equipment perform this installation. The user is responsible for having a qualified electrician promptly correct any interference problem resulting from the installation. If notified by the FCC about interference, stop using the equipment at once. Have the installation regularly checked and maintained. Keep high-frequency source doors and panels tightly shut, keep spark gaps at correct setting, and use grounding and shielding to minimize the possibility of interference. STATIC (ESD) can damage PC boards. D Put on grounded wrist strap BEFORE handling boards or parts. D Use proper static-proof bags and boxes to store, move, or ship PC boards. ARC WELDING can cause interference. MOVING PARTS can cause injury. D Keep away from moving parts. D Keep away from pinch points such as drive rolls. D D WELDING WIRE can cause injury. D D Do not press gun trigger until instructed to do so. D Do not point gun toward any part of the body, other people, or any metal when threading welding wire. D D Electromagnetic energy can interfere with sensitive electronic equipment such as computers and computer-driven equipment such as robots. D Be sure all equipment in the welding area is electromagnetically compatible. To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area. 1-4. Principal Safety Standards Safety in Welding and Cutting, ANSI Standard Z49.1, from American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126 Safety and Health Standards, OSHA 29 CFR 1910, from Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Recommended Safe Practices for the Preparation for Welding and Cutting of Containers That Have Held Hazardous Substances, American Welding Society Standard AWS F4.1, from American Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126 National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202. Code for Safety in Welding and Cutting, CSA Standard W117.2, from Canadian Standards Association, Standards Sales, 178 Rexdale Boulevard, Rexdale, Ontario, Canada M9W 1R3. Safe Practices For Occupation And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute, 1430 Broadway, New York, NY 10018. Cutting And Welding Processes, NFPA Standard 51B, from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. OM-355 Page 3 1-5. EMF Information Considerations About Welding And The Effects Of Low Frequency Electric And Magnetic Fields Welding current, as it flows through welding cables, will cause electromagnetic fields. There has been and still is some concern about such fields. However, after examining more than 500 studies spanning 17 years of research, a special blue ribbon committee of the National Research Council concluded that: “The body of evidence, in the committee’s judgment, has not demonstrated that exposure to powerfrequency electric and magnetic fields is a human-health hazard.” However, studies are still going forth and evidence continues to be examined. Until the final conclusions of the research are reached, you may wish to minimize your exposure to electromagnetic fields when welding or cutting. To reduce magnetic fields in the workplace, use the following procedures: OM-355 Page 4 1. Keep cables close together by twisting or taping them. 2. Arrange cables to one side and away from the operator. 3. Do not coil or drape cables around your body. 4. Keep welding power source and cables as far away from operator as practical. 5. Connect work clamp to workpiece as close to the weld as possible. About Pacemakers: Pacemaker wearers consult your doctor first. If cleared by your doctor, then following the above procedures is recommended. SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION som _nd_fre 4/98 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. Y Identifie un message de sécurité particulier. . Signifie NOTA ; n’est pas relatif à la sécurité. Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des risques de danger reliés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVEMENT et aux PIÈCES CHAUDES. Reportez-vous aux symboles et aux directives ci-dessous afin de connaître les mesures à prendre pour éviter tout danger. 1-2. Dangers relatifs au soudage à l’arc Y Les symboles présentés ci-après sont utilisés tout au long du présent manuel pour attirer votre attention et identifier les risques de danger. Lorsque vous voyez un symbole, soyez vigilant et suivez les directives mentionnées afin d’éviter tout danger. Les consignes de sécurité présentées ci-après ne font que résumer l’information contenue dans les normes de sécurité énumérées à la section 1-4. Veuillez lire et respecter toutes ces normes de sécurité. Y L’installation, l’utilisation, l’entretien et les réparations ne doivent être confiés qu’à des personnes qualifiées. Y Au cours de l’utilisation, tenir toute personne à l’écart et plus particulièrement les enfants. D N’utiliser qu’un matériel en bon état. Réparer ou remplacer sur-lechamp les pièces endommagées. Entretenir l’appareil conformément à ce manuel. D Porter un harnais de sécurité quand on travaille en hauteur. D Maintenir solidement en place tous les panneaux et capots. D Fixer le câble de retour de façon à obtenir un bon contact métal-métal avec la pièce à souder ou la table de travail, le plus près possible de la soudure. D Isoler la pince de masse quand pas mis à la pièce pour éviter le contact avec tout objet métallique. UN CHOC ÉLECTRIQUE peut tuer. Un simple contact avec des pièces électriques peut provoquer une électrocution ou des blessures graves. L’électrode et le circuit de soudage sont sous tension dès que l’appareil est sur ON. Le circuit d’entrée et les circuits internes de l’appareil sont également sous tension à ce moment-là. En soudage semi-automatique ou automatique, le fil, le dévidoir, le logement des galets d’entraînement et les pièces métalliques en contact avec le fil de soudage sont sous tension. Des matériels mal installés ou mal mis à la terre présentent un danger. Il y a DU COURANT CONTINU IMPORTANT dans les convertisseurs après la suppression de l’alimentation électrique. D Arrêter les convertisseurs, débrancher le courant électrique, et décharger les condensateurs d’alimentation selon les instructions indiquées dans la partie entretien avant de toucher les pièces. D Ne jamais toucher les pièces électriques sous tension. D Porter des gants et des vêtements de protection secs ne comportant pas de trous. D S’isoler de la pièce et de la terre au moyen de tapis ou d’autres moyens isolants suffisamment grands pour empêcher le contact physique éventuel avec la pièce ou la terre. D D D Ne pas se servir de source électrique àcourant électrique dans les zones humides, dans les endroits confinés ou là où on risque de tomber. Se servir d’une source électrique àcourant électrique UNIQUEMENT si le procédé de soudage le demande. Si l’utilisation d’une source électrique àcourant électrique s’avère nécessaire, se servir de la fonction de télécommande si l’appareil en est équipé. D Couper l’alimentation ou arrêter le moteur avant de procéder à l’installation, à la réparation ou à l’entretien de l’appareil. Déverrouiller l’alimentation selon la norme OSHA 29 CFR 1910.147 (voir normes de sécurité). D Installer et mettre à la terre correctement cet appareil conformément à son manuel d’utilisation et aux codes nationaux, provinciaux et municipaux. D Toujours vérifier la terre du cordon d’alimentation – Vérifier et s’assurer que le fil de terre du cordon d’alimentation est bien raccordé à la borne de terre du sectionneur ou que la fiche du cordon est raccordée à une prise correctement mise à la terre. D En effectuant les raccordements d’entrée fixer d’abord le conducteur de mise à la terre approprié et contre-vérifier les connexions. D Vérifier fréquemment le cordon d’alimentation pour voir s’il n’est pas endommagé ou dénudé – remplacer le cordon immédiatement s’il est endommagé – un câble dénudé peut provoquer une électrocution. D Mettre l’appareil hors tension quand on ne l’utilise pas. D Ne pas utiliser des câbles usés, endommagés, de grosseur insuffisante ou mal épissés. D Ne pas enrouler les câbles autour du corps. D Si la pièce soudée doit être mise à la terre, le faire directement avec un câble distinct. D Ne pas toucher l’électrode quand on est en contact avec la pièce, la terre ou une électrode provenant d’une autre machine. LES FUMÉES ET LES GAZ peuvent être dangereux. Le soudage génère des fumées et des gaz. Leur inhalation peut être dangereux pour votre santé. D D D D D D D Eloigner votre tête des fumées. Ne pas respirer les fumées. A l’intérieur, ventiler la zone et/ou utiliser un échappement au niveau de l’arc pour l’évacuation des fumées et des gaz de soudage. Si la ventilation est insuffisante, utiliser un respirateur à alimentation d’air homologué. Lire les spécifications de sécurité des matériaux (MSDSs) et les instructions du fabricant concernant les métaux, les consommables, les revêtements, les nettoyants et les dégraisseurs. Travailler dans un espace fermé seulement s’il est bien ventilé ou en portant un respirateur à alimentation d’air. Demander toujours à un surveillant dûment formé de se tenir à proximité. Des fumées et des gaz de soudage peuvent déplacer l’air et abaisser le niveau d’oxygène provoquant des blessures ou des accidents mortels. S’assurer que l’air de respiration ne présente aucun danger. Ne pas souder dans des endroits situés à proximité d’opérations de dégraissage, de nettoyage ou de pulvérisation. La chaleur et les rayons de l’arc peuvent réagir en présence de vapeurs et former des gaz hautement toxiques et irritants. Ne pas souder des métaux munis d’un revêtement, tels que l’acier galvanisé, plaqué en plomb ou au cadmium à moins que le revêtement n’ait été enlevé dans la zone de soudure, que l’endroit soit bien ventilé, et si nécessaire, en portant un respirateur à alimentation d’air. Les revêtements et tous les métaux renfermant ces éléments peuvent dégager des fumées toxiques en cas de soudage. OM-355 Page 5 LES RAYONS DE L’ARC peuvent provoquer des brûlures dans les yeux et sur la peau. Le rayonnement de l’arc du procédé de soudage génère des rayons visibles et invisibles intenses (ultraviolets et infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la peau. Des étincelles sont projetées pendant le soudage. D Porter un casque de soudage muni d’un écran de filtre approprié pour protéger votre visage et vos yeux pendant le soudage ou pour regarder (voir ANSI Z49.1 et Z87.1 énuméré dans les normes de sécurité). D Porter des protections approuvés pour les oreilles si le niveau sondre est trop élevé. D Utiliser des écrans ou des barrières pour protéger des tiers de l’éclair et de l’éblouissement; demander aux autres personnes de ne pas regarder l’arc. D Porter des vêtements de protection constitué dans une matière durable, résistant au feu (cuir ou laine) et une protection des pieds. LE SOUDAGE peut provoquer un incendie ou une explosion. Le soudage effectué sur des conteneurs fermés tels que des réservoirs, tambours ou des conduites peut provoquer leur éclatement. Des étincelles peuvent être projetées de l’arc de soudure. La projection d’étincelles, des pièces chaudes et des équipements chauds peut provoquer des incendies et des brûlures. Le contact accidentel de l’électrode avec des objets métalliques peut provoquer des étincelles, une explosion, un surchauffement ou un incendie. Avant de commencer le soudage, vérifier et s’assurer que l’endroit ne présente pas de danger. D Se protéger et d’autres personnes de la projection d’étincelles et de métal chaud. D Ne pas souder dans un endroit là où des étincelles peuvent tomber sur des substances inflammables. D Déplacer toutes les substances inflammables à une distance de 10,7 m de l’arc de soudage. En cas d’impossibilité les recouvrir soigneusement avec des protections homologués. D Des étincelles et des matériaux chauds du soudage peuvent facilement passer dans d’autres zones en traversant de petites fissures et des ouvertures. D Surveiller tout déclenchement d’incendie et tenir un extincteur à proximité. D Le soudage effectué sur un plafond, plancher, paroi ou séparation peut déclencher un incendie de l’autre côté. D Ne pas effectuer le soudage sur des conteneurs fermés tels que des réservoirs, tambours, ou conduites, à moins qu’ils n’aient été préparés correctement conformément à AWS F4.1 (voir les normes de sécurité). D Brancher le câble sur la pièce le plus près possible de la zone de soudage pour éviter le transport du courant sur une longue distance par des chemins inconnus éventuels en provoquant des risques d’électrocution et d’incendie. D Ne pas utiliser le poste de soudage pour dégeler des conduites gelées. D En cas de non utilisation, enlever la baguette d’électrode du porteélectrode ou couper le fil à la pointe de contact. D Porter des vêtements de protection dépourvus d’huile tels que des gants en cuir, une chemise en matériau lourd, des pantalons sans revers, des chaussures hautes et un couvre chef. D Avant de souder, retirer toute substance combustible de vos poches telles qu’un allumeur au butane ou des allumettes. DES PARTICULES VOLANTES peuvent blesser les yeux. D Le soudage, l’écaillement, le passage de la pièce à la brosse en fil de fer, et le meulage génèrent des étincelles et des particules métalliques volantes. Pendant la période de refroidissement des soudures, elles risquent de projeter du laitier. D Porter des lunettes de sécurité avec écrans latéraux ou un écran facial. OM-355 Page 6 LES ACCUMULATIONS DE GAZ risquent de provoquer des blessures ou même la mort. D D Fermer l’alimentation du gaz protecteur en cas de non utilisation. Veiller toujours à bien aérer les espaces confinés ou se servir d’un respirateur d’adduction d’air homologué. DES PIÈCES CHAUDES peuvent provoquer des brûlures graves. D Ne pas toucher des parties chaudes à mains nues D Prévoir une période de refroidissement avant d’utiliser le pistolet ou la torche. LES CHAMPS MAGNÉTIQUES peuvent affecter les stimulateurs cardiaques. D D Porteurs de stimulateur cardiaque, restez à distance. Les porteurs d’un stimulateur cardiaque doivent d’abord consulter leur médecin avant de s’approcher des opérations de soudage à l’arc, de gougeage ou de soudage par points. LE BRUIT peut affecter l’ouïe. Le bruit des processus et des équipements peut affecter l’ouïe. D Porter des protections approuvés pour les oreilles si le niveau sondre est trop élevé. Si des BOUTEILLES sont endommagées, elles pourront exploser. Des bouteilles de gaz protecteur contiennent du gaz sous haute pression. Si une bouteille est endommagée, elle peut exploser. Du fait que les bouteilles de gaz font normalement partie du procédé de soudage, les manipuler avec précaution. D Protéger les bouteilles de gaz comprimé d’une chaleur excessive, des chocs mécaniques, du laitier, des flammes ouvertes, des étincelles et des arcs. D Placer les bouteilles debout en les fixant dans un support stationnaire ou dans un porte-bouteilles pour les empêcher de tomber ou de se renverser. D Tenir les bouteilles éloignées des circuits de soudage ou autres circuits électriques. D Ne jamais placer une torche de soudage sur une bouteille à gaz. D Une électrode de soudage ne doit jamais entrer en contact avec une bouteille. D Ne jamais souder une bouteille pressurisée – risque d’explosion. D Utiliser seulement des bouteilles de gaz protecteur, régulateurs, tuyaux et raccords convenables pour cette application spécifique; les maintenir ainsi que les éléments associés en bon état. D Ne pas tenir la tête en face de la sortie en ouvrant la soupape de la bouteille. D Maintenir le chapeau de protection sur la soupape, sauf en cas d’utilisation ou de branchement de la bouteille. D Lire et suivre les instructions concernant les bouteilles de gaz comprimé, les équipements associés et les publications P-1 CGA énumérées dans les normes de sécurité. 1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance Risque D’INCENDIE OU D’EXPLOSION. DES ORGANES MOBILES peuvent provoquer des blessures. D Ne pas placer l’appareil sur, au-dessus ou à proximité de surfaces infllammables. D Rester à l’écart des organes mobiles comme le ventilateur. D Maintenir fermés et fixement en place les portes, panneaux, recouvrements et dispositifs de protection. D Ne pas installer l’appareil à proximité de produits inflammables D Ne pas surcharger l’installation électrique – s”assurer que l’alimentation est correctement dimensionné et protégé avant de mettre l’appareil en service. LE RAYONNEMENT HAUTE FRÉQUENCE (H.F.) risque de provoquer des interférences. LA CHUTE DE L’APPAREIL peut blesser. D Utiliser l’anneau de levage uniquement pour soulever l’appareil, NON PAS les chariot, les bouteilles de gaz ou tout autre accessoire. D Utiliser un engin d’une capacité appropriée pour soulever l’appareil. D En utilisant des fourches de levage pour déplacer l’unité, s’assurer que les fourches sont suffisamment longues pour dépasser du côté opposé de l’appareil. L’EMPLOI EXCESSIF peut SURCHAUFFER L’ÉQUIPEMENT. D D D D D D Prévoir une période de refroidissement, respecter le cycle opératoire nominal. D Réduire le courant ou le cycle opératoire avant de recommancer le soudage. LE SOUDAGE À L’ARC risque de provoquer des interférences. D Ne pas obstruer les passages d’air du poste. LES CHARGES ÉLECTROSTATIQUES peuvent endommager les circuits imprimés. D Établir la connexion avec la barrette de terre avant de manipuler des cartes ou des pièces. D Utiliser des pochettes et des boîtes antistatiques pour stocker, déplacer ou expédier des cartes de circuits imprimes. DES ORGANES MOBILES peuvent provoquer des blessures. D Ne pas s’approcher des organes mobiles. D Ne pas s’approcher des points de coincement tels que des rouleaux de commande. LES FILS DE SOUDAGE peuvent provoquer des blessures. D Ne pas appuyer sur la gachette avant d’en avoir reçu l’instruction. D Ne pas diriger le pistolet vers soi, d’autres personnes ou toute pièce mécanique en engageant le fil de soudage. D Le rayonnement haute frequence peut provoquer des interférences avec les équipements de radio–navigation et de communication, les services de sécurité et les ordinateurs. Demander seulement à des personnes qualifiées familiarisées avec des équipements électroniques de faire fonctionner l’installation. L’utilisateur est tenu de faire corriger rapidement par un électricien qualifié les interférences résultant de l’installation. Si le FCC signale des interférences, arrêter immédiatement l’appareil. Effectuer régulièrement le contrôle et l’entretien de l’installation. Maintenir soigneusement fermés les portes et les panneaux des sources de haute fréquence, maintenir les éclateurs à une distance correcte et utiliser une terre et et un blindage pour réduire les interférences éventuelles. D D D D D D L’énergie électromagnétique risque de provoquer des interférences pour l’équipement électronique sensible tel que les ordinateurs et l’équipement commandé par ordinateur tel que les robots. Veiller à ce que tout l’équipement de la zone de soudage soit compatible électromagnétiquement. Pour réduire la possibilité d’interférence, maintenir les câbles de soudage aussi courts que possible, les grouper, et les poser aussi bas que possible (ex. par terre). Veiller à souder à une distance de 100 mètres de tout équipement électronique sensible. Veiller à ce que ce poste de soudage soit posé et mis à la terre conformément à ce mode d’emploi. En cas d’interférences après avoir pris les mesures précédentes, il incombe à l’utilisateur de prendre des mesures supplémentaires telles que le déplacement du poste, l’utilisation de câbles blindés, l’utilisation de filtres de ligne ou la pose de protecteurs dans la zone de travail. LES CHAMPS MAGNÉTIQUES peuvent affecter les stimulateurs cardiaques. D Porteurs de stimulateur cardiaque, restez à distance. D Les porteurs d’un stimulateur cardiaque doivent d’abord consulter leur médecin avant de s’approcher des opérations de soudage à l’arc, de gougeage ou de soudage par points. OM-355 Page 7 1-4. Principales normes de sécurité Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Welding Society, 550 N.W. Lejeune Rd, Miami FL 33126 Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Recommended Safe Practice for the Preparation for Welding and Cutting of Containers That Have Held Hazardous Substances, norme AWS F4.1, de l’American Welding Society, 550 N.W. Lejeune Rd, Miami FL 33126 National Electrical Code, NFPA Standard 70, de la National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, de la Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202. Règles de sécurité en soudage, coupage et procédés connexes, norme CSA W117.2, de l’Association canadienne de normalisation, vente de normes, 178 Rexdale Boulevard, Rexdale (Ontario) Canada M9W 1R3. Safe Practices For Occupation And Educational Eye And Face Protection, norme ANSI Z87.1, de l’American National Standards Institute, 1430 Broadway, New York, NY 10018. Cutting and Welding Processes, norme NFPA 51B, de la National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. 1-5. Information sur les champs électromagnétiques Données sur le soudage électrique et sur les effets, pour l’organisme, des champs magnétiques basse fréquence Afin de réduire les champs électromagnétiques dans l’environnement de travail, respecter les consignes suivantes : 1 Le courant de soudage, pendant son passage dans les câbles de soudage, causera des champs électromagnétiques. Il y a eu et il y a encore un certain souci à propos de tels champs. Cependant, après avoir examiné plus de 500 études qui ont été faites pendant une période de recherche de 17 ans, un comité spécial ruban bleu du National Research Council a conclu: “L’accumulation de preuves, suivant le jugement du comité, n’a pas démontré que l’exposition aux champs magnétiques et champs électriques à haute fréquence représente un risque à la santé humaine”. Toutefois, des études sont toujours en cours et les preuves continuent à être examinées. En attendant que les conclusions finales de la recherche soient établies, il vous serait souhaitable de réduire votre exposition aux champs électromagnétiques pendant le soudage ou le coupage. OM-355 Page 8 2 3 4 5 Garder les câbles ensembles en les torsadant ou en les attachant avec du ruban adhésif. Mettre tous les câbles du côté opposé de l’opérateur. Ne pas courber pas et ne pas entourer pas les câbles autour de votre corps. Garder le poste de soudage et les câbles le plus loin possible de vous. Relier la pince de masse le plus près possible de la zone de soudure. Consignes relatives aux stimulateurs cardiaques : Les personnes qui portent un stimulateur cardiaque doivent avant tout consulter leur docteur. Si vous êtes déclaré apte par votre docteur, il est alors recommandé de respecter les consignes ci–dessus. SECTION 2 – INSTALLATION 2-1. Included with Your Unit 1 2 3 7 4 5 6 5 6 7 12 ft (3.7 m) Work Cable With Clamp And Quick-Connect 150 Amp TIG Torch with 12-1/2 ft (3.8 m) Cable Electrode Holder and Quick-Connect Gas Hose Gas Regulator RFCS-14 Foot Control with 20 ft (6 m) Cable 8 ft (2.4 m) Primary Cord . Some assembly is required. 4 For options and accessories see back of book or contact your distributor. 2 1 3 2-2. Selecting A Location 1 2 Lifting Eye Lifting Forks Use lifting eye or lifting forks to move unit. Movement If using lifting forks, extend forks beyond opposite side of unit. 1 3 Rating Label Use rating label to determine input power needs. OR 2 Location And Airflow 3 4 Line Disconnect Device Locate unit near correct input power supply. Position unit so air can circulate. For information about sources of high-frequency see Section 6. For carts and caster kits see back of book or contact your distributor. 18 in (460 mm) 18 in (460 mm) 18 in (460 mm) 4 Y Special installation may be required where gasoline or volatile liquids are present – see NEC Article 511 or CEC Section 20. 18 in (460 mm) ST-802 238 OM-355 Page 9 2-3. Dimensions And Weights Dimensions Height 21 in (533 mm) Width 13-5/8 in (346 mm) Length 22-1/8 in (562 mm) A 21-5/16 in (541 mm) B 13/16 in (21 mm) C 12-7/16 in (316 mm) D 1–1/16 in (27 mm) E 1/2 (13 mm) A E 4 Holes B Weight Front D C ST-802 259 210 lbs (95 kg) 2-4. Specifications Rated Output at 40% Duty Cycle Mode Rated Input, 60 HZ, Single-Phase KVA KW Welding Amperage Range Max. Open-Circuit Voltage DC TIG 150 Amps at 16 Volts 230 V–38 A - (2)* 8.7 - (0.50)* 4.0 - (0.3)* 10–180 80 DC Stick 150 Amps at 26 Volts 230 V–42 A - (2)* 9.7 - (0.50)* 5.7 - (0.3)* 10–180 80 AC TIG 150 Amps at 16 Volts 230 V–67 A - (2)* 15.5 - (0.50)* 4.9 - (0.3)* 15–180 80 AC Stick 150 Amps at 26 Volts 230 V–53 A - (2)* 12.2 - (0.50)* 6.2 - (0.3)* 15–180 80 * () While idling. 2-5. Duty Cycle Chart Duty cycle is percentage of 10 minutes that unit can weld at rated load without overheating. Y Exceeding duty cycle can damage unit and void warranty. 40% Duty Cycle at 150 A AC/DC 4 Minutes Welding 6 Minutes Resting ST-188 276-A OM-355 Page 10 2-6. Volt-Ampere Curves Volt-ampere curves show minimum and maximum voltage and amperage output capabilities of welding power source. Curves of other settings fall between curves shown. DC MODE 80 80 70 70 60 60 50 50 VOLTS VOLTS AC MODE 40 40 30 30 20 20 10 Stick MIN 10 Stick MAX STICK–MAX TIG–MAX TIG–MIN STICK–MIN 0 0 0 50 100 150 200 AMPERES 250 300 350 0 50 100 150 AMPERES 200 250 ssb1.1 10/91 – ST-188 277 / ST-188 278 2-7. Weld Output Terminals And Selecting Cable Sizes Y ARC WELDING can cause Electromagnetic Interference. To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area. Total Cable (Copper) Length In Weld Circuit Not Exceeding 100 ft (30 m) Or Less 150 ft (45 m) 200 ft (60 m) 250 ft (70 m) 300 ft (90 m) 350 ft (105 m) 400 ft (120 m) Weld Output Terminals Y Turn off power before connecting to weld output terminals. Welding Amperes 10 – 60% Duty Cycle 60 – 100% Duty Cycle 100 4 4 4 3 2 1 1/0 1/0 150 3 3 2 1 1/0 2/0 3/0 3/0 200 3 2 1 1/0 2/0 3/0 4/0 4/0 250 2 1 1/0 2/0 3/0 4/0 2-2/0 2-2/0 Y Do not use worn, damaged, undersized, or poorly spliced cables. Electrode 10 – 100% Duty Cycle Work Ref. ST-802 238 Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere. S-0007-D OM-355 Page 11 2-8. Remote 14 Receptacle NOTE Remote control device has complete control of amperage at all times when connected to Remote 14 receptacle. Socket* A B K Socket Information A 24 volts DC. B Contact closure to A completes 24 volts DC contactor control circuit. C Command reference; 0 to +10 volts DC output to remote control. D Remote control circuit common. E 0 to +10 volts DC input command signal from remote control. K Chassis common. J I H C L N M D G E F A ST-802 238 *The remaining sockets are not used. 2-9. Shielding Gas Connections Y Turn Off power before connecting to receptacle. 1 4 Gas Valve In Fitting Fitting has threads. Tools Needed: 5 3 5/8-18 right-hand Located on rear of unit. 5/8, 1-1/8 in 2 Gas Valve Out Fitting Gas connection is integrated into the Electrode weld output terminal by means of a flow-through type connector. 3 Cylinder Valve Open valve slightly so gas flow blows dirt from valve. Close valve. 4 Regulator/Flow Gauge Connect regulator/flow gauge to gas cylinder. 1 Connect gas hose to gas in fitting. 5 2 Flow Adjust Typical flow rate is 20 cfh (cubic feet per hour). Ref. ST-802 238 / Ref. ST-802 258 / Ref. ST-157 858 OM-355 Page 12 2-10. Electrical Service Guide NOTE All values calculated at 40% duty cycle. 60 Hz Single Phase Input Voltage 230 Input Amperes At Rated Output 67 Max Recommended Standard Fuse Rating In Amperes 1 Time-Delay 2 80 Normal Operating 3 100 Min Input Conductor Size In AWG/Kcmil 8 Max Recommended Input Conductor Length In Feet (Meters) 166 (52) Min Grounding Conductor Size In AWG/Kcmil 8 Reference: 1999 National Electrical Code (NEC) 1 Consult factory for circuit breaker applications. 2 “Time-Delay” fuses are UL class “RK5” . 3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and above). 2-11. Connecting Input Power Y Disconnect and lockout/tagout input power before connecting input conductors from unit. Tools Needed: Y Have only qualified persons make this installation. GND/PE Y Special installation may be required where gasoline or volatile liquids are present – see NEC Article 511 or CEC Section 20. Units come equipped with input power cord for installation into line disconnect device. Select type and size overcurrent protection using Section 2-10. GND/PE Connect green or green/yellow L1 grounding conductor first. L2 Install conductors into a deenergized line disconnect device. ST-802 238 OM-355 Page 13 SECTION 3 – OPERATION 3-1. Controls 2 3 4 5 6 7 1 Ref. ST-188 714-A 1 Output Selector Switch Y Do not use AC output in damp areas, if movement is confined, or if there is danger of falling. Use AC output ONLY if required for the welding process, and then use a remote control. Y Do not change position of switch while welding or while under load. Use switch to select Direct Current Electrode Negative (DCEN), AC, or Direct Current Electrode Positive (DCEP) output without changing weld output cable connections. 2 Amperage Adjust Control For Stick (SMAW), use control to adjust amperage. OM-355 Page 14 For remote amperage control used when TIG (GTAW) welding, front panel Amperage control setting is the maximum amperage available at the remote control device. See Section 3-3 for example of remote amperage control. 3 Weld Process Switch Use switch to select weld process. In Stick position (up), weld output goes On and Off with Power switch. In GTAW (TIG) position (down), remote control device turns on and adjusts weld output of unit as limited by Amperage control. For Direct Current Electrode Negative (DCEN), built-in arc starter comes on when needed to start or stabi- lize welding arc. For AC welding, the arc starter will turn on and stay on to start and stabilize the welding arc. No adjustments needed for arc starter. 4 Output (Contactor) Light Lights when output (contactor) and unit power are on. 5 Overtemp Light Lights when unit overheats and shuts down (see Section 4-3). 6 Pilot Light 7 Power Switch Use switch to turn unit, fan, and pilot light On and Off. 3-2. Example of Front Panel Amperage Control For Stick (SMAW) Welding Select weld process. Select polarity. Select amperage. In Example: Remote weld amperage = 10–180 amps DC NOTE: Remote amperage control is active whenever a remote control is connected. If the remote device does not include a means of controlling amperage through pin E, the Amperage Adjustment control on the front panel remains active. 3-3. Example of Remote Amperage Control For TIG (GTAW) Welding Select weld process. or Connect remote control (see Section 3-4). Select polarity. Select max amperage In Example: For remote amperage control, front panel amperage control setting is the maximum amperage available. Full range is 10–180 amps DC, but if front panel amperage control is set at 130 amps, the range of remote amperage control is 10 to 130 amps DC. NOTE: Remote amperage control is active whenever a remote control is connected. If the remote device does not include a means of controlling amperage through pin E, the Amperage Adjustment control on the front panel remains active. OM-355 Page 15 3-4. Typical TIG Connections Y Turn off power before making connections. 6 1 Remote Foot Control A customer supplied remote fingertip control may also be used. 7 2 3 5 Torch Work Clamp Connect remote control, torch, and work clamp to receptacles as shown. 4 Cylinder Chain or secure cylinder to running gear, wall, or other stationary support. 5 Cylinder Valve Open valve slightly so gas flow blows dirt from valve. Close valve. Tools Needed: 5/8, 1-1/8 in 6 Regulator/Flow Gauge Install so face is vertical. 4 7 Flow Adjust Typical flow rate is 20 cfh (cubic feet per hour) (9.4 L/min). NOTE: After activating remote control, 0.3 seconds of gas preflow will begin. 1 Application: Preflow is used to purge the immediate weld area of atmosphere. Preflow also aids in consistent arc starting. 2 NOTE: When remote control is released, gas continues to flow for 18 seconds Application: 3 Postflow is required to cool tungsten and weld, and to prevent contamination of tungsten and weld. Increase postflow time if tungsten or weld are dark in appearance. NOTE: Both preflow and postflow are preset and are not adjustable. NOTE: When AC welding, the balance control is preset at 60% electrode negative (EN), and 40% electrode positive (EP). ST-802 238 OM-355 Page 16 3-5. Typical Stick Connections Y Turn off power before making connections. 1 2 Electrode Holder Work Clamp Connect electrode holder and work clamp to receptacles as shown. 1 2 ST-802 238 3-6. Process and Material Thickness Guide Label Guideline For Welding Process And Output For Material Material Thickness Material And Weld Output 22 ga 20 ga 0.033 in 0.036 in 0.8 mm 0.9 mm 18 ga 0.048 in 1.2 mm 16 ga 0.06 in 1.5 mm 14 ga 0.07 in 1.8 mm 12 ga 0.1 in 2.5 mm 11 ga 0.125 in 3.2 mm 10 ga 0.14 in 3.6 mm Steel Or Stainless Steel ( ) DCEN ELECTRODE NEGATIVE 2 ga 0.25 in 6.3 mm – 0.25+ in 6.3+ mm SMAW GTAW GTAW With DCEP Output GTAW Aluminum Difficult AC 6 ga 0.186 in 4.8 mm Recommended Not Recommended S-167 338 OM-355 Page 17 SECTION 4 – MAINTENANCE AND TROUBLESHOOTING 4-1. Routine Maintenance Y Disconnect power before maintaining. . Maintain more often during severe conditions. 3 Months Replace unreadable labels. Clean and tighten weld terminals. Repair or replace cracked weld cable. Repair or replace cracked gas hose. Replace o-ring in Electrode/Gas Output receptacle if cracked. 6 Months Blow out or vacuum inside. OM-355 Page 18 Or 4-2. Adjusting Spark Gaps Tools Needed: Y Turn Off power before adjusting spark gaps. Remove left side panel. 1 2 1 Tungsten End Of Point Replace point if tungsten end disappears; do not clean or dress tungsten. 2 3 Spark Gap Normal spark gap is 0.012 in (0.305 mm). 3 If adjustment is needed, proceed as follows: 4 4 3 Adjustment Screws Loosen screws. Place gauge of proper thickness in spark gap. 4 Pressure Point Apply slight pressure at point until gauge is held firmly in gap. Tighten screws to 12 in/lbs torque (overtightening will deform plastic base). Adjust other gap. Reinstall left side panel. ST-802 745-A 4-3. Troubleshooting Trouble No weld output; fan does not run. Remedy Place line disconnect switch in On position (see Section 2-11). Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 2-11). Check for proper input power connections (see Section 2-11). No weld output; fan on. Be sure Polarity switch is not set between positions. Tighten remote control connection to Remote 14 receptacle. Check remote control (see remote control Owner’s Manual). Unit overheated. Allow unit to cool (see Section 2-5). Fan not operating; weld output available. Check for and remove anything blocking fan movement. Have Factory Authorized Service Agent check fan motor. OM-355 Page 19 SECTION 5 – ELECTRICAL DIAGRAM SD-188 274-F Figure 5-1. Circuit Diagram For Welding Power Source OM-355 Page 20 SECTION 6 – HIGH FREQUENCY (HF) 6-1. Welding Processes Using HF 1 HF Voltage GTAW – helps arc jump air gap between torch and workpiece and/ or stabilize the arc. 2 1 1 Work Work Gas Tungsten Arc Welding (GTAW) Submerged Arc Welding (SAW) SAW – helps arc reach workpiece through flux granules. 2 Flux high_freq1 7/95 – S-0693 6-2. Sources Of HF Radiation From Incorrect Installation Weld Zone 11, 12 50 ft (15 m) 10 14 9 8 7 3 2 13 1 4 5 6 S-0694 Sources Of Direct HF Radiation 1 HF source (welding power source with built-in HF or separate HF unit) 2 Weld Cables 3 Torch 4 Work Clamp 5 6 Workpiece Work Table Sources Of Conduction Of HF 7 8 9 Input Power Cable Line Disconnect Device Input Supply Wiring Sources Of Reradiation Of HF 10 Ungrounded Metal Objects 11 Lighting 12 Wiring 13 Water Pipes And Fixtures 14 External Phone And Power Lines OM-355 Page 21 6-3. Correct Installation 6 Weld Zone 50 ft (15 m) 50 ft (15 m) 4 1 5 2 7 3 7 Ground All Metal Objects And All Wiring In Welding Zone Using #12 AWG Wire Nonmetal Building Ground Workpiece If Required By Codes 8 7 7 10 Metal Building 9 Ref. S-0695 / Ref. S-0695 1 HF Source (Welder With Built-In HF Or Separate HF Unit) Ground metal machine case, work output terminal, line disconnect device, input supply, and worktable. Electrically join (bond) all conduit sections using copper straps or braided wire. Ground conduit every 50 ft (15 m). 5 Water Pipes And Fixtures 8 Metal Building Panel Bonding Methods Bolt or weld building panels together, install copper straps or braided wire across seams, and ground frame. Ground water pipes every 50 ft (15 m). 9 A circle 50 ft (15 m) from centerpoint between HF source and welding torch in all directions. 6 Cover all windows and doorways with grounded copper screen of not more than 1/4 in (6.4 mm) mesh. 3 7 2 Welding Zone And Centerpoint Weld Output Cables Keep cables short and close together. 4 Conduit Joint Bonding And Grounding OM-355 Page 22 External Power Or Telephone Lines Locate HF source at least 50 ft (15 m) away from power and phone lines. Grounding Rod Consult the National Electrical Code for specifications. Windows And Doorways 10 Overhead Door Track Ground the track. SECTION 7 – SELECTING AND PREPARING TUNGSTEN ELECTRODE gtaw2 7/97 NOTE For additional information, see your distributor for a handbook on the Gas Tungsten Arc Welding (GTAW) process. Wear clean gloves to prevent contamination of tungsten electrode. 7-1. Selecting Tungsten Electrode Amperage Range - Gas Type♦ - Polarity Electrode Diameter DC – Argon – Electrode Negative/Straight Polarity DC – Argon – Electrode Positive/Reverse Polarity .010” Up to 25 * .020” 15-40 * .040” 25-85 * 1/16” 50-160 10-20 3/32” 135-235 15-30 2% Thorium Alloyed Tungsten (Red Band) 1/8” 250-400 25-40 5/32” 400-500 40-55 3/16” 500-750 55-80 1/4” 750-1000 80-125 ♦Typical argon shielding gas flow rates are 15 to 35 cfh (cubic feet per hour) – 7 to 16.5 lpm (liters per minute). *Not Recommended. The figures listed are intended as a guide and are a composite of recommendations from American Welding Society (AWS) and electrode manufacturers. 7-2. Safety Information About Tungsten 1 2 Y Grinding the tungsten electrode produces dust and flying sparks which can cause injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an approved respirator. Read MSDS for safety information. Consider using tungsten containing ceria, lanthana, or yttria instead of thoria. Grinding dust from thoriated electrodes contains low-level radioactive material. Properly dispose of grinder dust in an environmentally safe way. Wear proper face, hand, and body protection. Keep flammables away. 1 2 Tungsten Electrode With Balled End Pointed Tungsten Electrode Ref. S-0161 OM-355 Page 23 7-3. Preparing Tungsten For DC Electrode Negative (DCEN) Welding 1 1 2 2 Tungsten Electrode Tapered End Grind end of tungsten on fine grit, hard abrasive wheel before welding. Do not use wheel for other jobs or tungsten can become contaminated causing lower weld quality. 2-1/2 Times Electrode Diameter 1 2 3 1 2 Stable Arc Flat Diameter of this flat determines amperage capacity. 3 4 Grinding Wheel Straight Ground 1 2 3 4 Arc Wander Point Grinding Wheel Radial Ground 4 Ideal Tungsten Preparation – Stable Arc 1 2 3 4 Wrong Tungsten Preparation – Wandering Arc Ref. S-0161 / Ref. S-0162 OM-355 Page 24 SECTION 8 – GUIDELINES FOR TIG WELDING (GTAW) 8-1. Positioning The Torch 3 2 4 90° 1 Y Grinding the tungsten electrode produces dust and flying sparks which can cause injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an approved respirator. Read MSDS for safety information. Consider using cerium or lanthanum based tungsten instead of thoriated. Thorium dust contains low-level radioactive material. Properly dispose of grinder dust in an environmentally safe way. Wear proper face, hand, and body protection. Keep flammables away. 1 Workpiece Make sure workpiece is clean before welding. 2 Work Clamp Place as close to the weld as possible. 10–15° 4 5 6 10–25° 3 4 5 6 Torch Filler Rod (If Applicable) Gas Cup Tungsten Electrode Select and prepare tungsten according to Sections 7-1, and 7-2 or 7-3. Guidelines: 5 6 1/16 in 3/16 in Bottom View Of Gas Cup The inside diameter of the gas cup should be at least three times the tungsten diameter to provide adequate shielding gas coverage. (For example, if tungsten is 1/16 in diameter, gas cup should be a minimum of 3/16 in diameter. Tungsten extension is the distance the tungsten extends out gas cup of torch. The tungsten extension should be no greater than the inside diameter of the gas cup. Arc length is the distance from the tungsten to the workpiece. Ref. ST-161 892 OM-355 Page 25 8-2. Torch Movement During Welding Tungsten Without Filler Rod 75° Welding direction Form pool Tilt torch Move torch to front of pool. Repeat process. Tungsten With Filler Rod 75° Welding direction Form pool Tilt torch Remove rod 15° Add filler metal Move torch to front of pool. Repeat process. ST-162 002-B OM-355 Page 26 8-3. Positioning Torch Tungsten For Various Weld Joints 90° Butt Weld And Stringer Bead 70° 20° 20° “T” Joint 70° 10° 20° 40° Lap Joint 70° 20° 30° 90° Corner Joint 70° 20° ST-162 003 / S-0792 OM-355 Page 27 SECTION 9 – STICK WELDING (SMAW) GUIDELINES 9-1. Stick Welding Procedure Y Weld current starts when electrode touches workpiece. Y Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible. 1 5 2 3 4 2 Work Clamp Electrode A small diameter electrode requires less current than a large one. Follow electrode manufacturer’s instructions when setting weld amperage (see Section 9-2). 3 6 1 Workpiece Make sure workpiece is clean before welding. 7 4 5 6 Insulated Electrode Holder Electrode Holder Position Arc Length Arc length is the distance from the electrode to the workpiece. A short arc with correct amperage will give a sharp, crackling sound. 7 Slag Use a chipping hammer and wire brush to remove slag. Remove slag and check weld bead before making another weld pass. Tools Needed: stick 12/96 – ST-151 593 OM-355 Page 28 7014 7018 7024 Ni-Cl 308L 9-3. PENETRATION EP ALL DEEP 6011 EP ALL DEEP 6013 EP,EN ALL LOW GENERAL 7014 EP,EN ALL MED 7018 EP ALL LOW SMOOTH, EASY, FAST LOW HYDROGEN, STRONG 7024 EP,EN NI-CL EP FLAT HORIZ FILLET ALL 308L EP ALL USAGE POSITION 6010 AC 450 400 350 300 250 200 150 DC* 6013 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 ELECTRODE 6010 & 6011 100 50 DIAMETER AMPERAGE RANGE Electrode and Amperage Selection Chart ELECTRODE 9-2. MIN. PREP, ROUGH HIGH SPATTER LOW SMOOTH, EASY, FASTER LOW CAST IRON LOW STAINLESS *EP = ELECTRODE POSITIVE (REVERSE POLARITY) EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY) Ref. S-087 985-A Striking an Arc – Scratch Start Technique 1 1 2 3 Electrode Workpiece 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 workpiece, use a quick twist to free it. 2 3 S-0049 9-4. Striking an Arc – Tapping Technique 1 1 2 3 2 Electrode Workpiece Arc Bring electrode straight down to workpiece; then lift slightly to start arc. If arc goes out, electrode was lifted too high. If electrode sticks to workpiece, use a quick twist to free it. 3 S-0050 OM-355 Page 29 9-5. Positioning Electrode Holder 10°-30° 90° 90° End View of Work Angle Side View of Electrode Angle GROOVE WELDS 10°-30° 45° 45° End View of Work Angle Side View of Electrode Angle FILLET WELDS 9-6. S-0060 Poor Weld Bead Characteristics 1 2 3 4 5 Large Spatter Deposits Rough, Uneven Bead Slight Crater During Welding Bad Overlap Poor Penetration 1 2 4 3 5 9-7. S-0053-A Good Weld Bead Characteristics 1 2 3 Fine Spatter Uniform Bead Moderate Crater During Welding Weld a new bead or layer for each 1/8 in. (3.2 mm) thickness in metals being welded. 4 5 1 2 3 4 No Overlap Good Penetration into Base Metal 5 S-0052-B OM-355 Page 30 9-8. Conditions That Affect Weld Bead Shape NOTE Weld bead shape is affected by electrode angle, arc length, travel speed, and thickness of base metal. Angle Too Small Correct Angle 10° - 30° Angle Too Large Drag ELECTRODE ANGLE Spatter Normal Too Short Too Long ARC LENGTH Normal Slow Fast TRAVEL SPEED 9-9. S-0061 Electrode Movement During Welding NOTE Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps, a weave bead or multiple stringer beads work better. 1 2 1 2 3 Stringer Bead – Steady Movement Along Seam Weave Bead – Side to Side Movement Along Seam Weave Patterns Use 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. 3 S-0054-A OM-355 Page 31 9-10. Butt Joints 1 1 2 Tack Welds Prevent edges of joint from drawing together ahead of electrode by tack welding the materials in position before final weld. 2 Square Groove Weld Good for materials up to 3/16 in (5 mm) thick. 3 1/16 in (1.6 mm) 30° Single V-Groove Weld Good for materials 3/16 – 3/4 in (5-19 mm) thick. Cut bevel with oxyacetylene or plasma cutting equipment. Remove scale from material after cutting. A grinder can also be used to prepare bevels. 4 3 Create 30 degree angle of bevel on materials in V-groove welding. 4 Double V-Groove Weld Good for materials thicker than 3/16 in (5 mm). S-0662 9-11. Lap Joint 30° Or Less 30° Or Less 1 1 1 2 Move electrode in circular motion. 3 Single-Layer Fillet Weld Multi-Layer Fillet Weld Weld a second layer when a heavier fillet is needed. Remove slag before making another weld pass. Weld both sides of joint for maximum strength. 3 2 Electrode Single-Layer Fillet Weld Multi-Layer Fillet Weld S-0063 / S-0064 9-12. Tee Joint 1 2 Keep arc short and move at definite rate of speed. Hold electrode as shown to provide fusion into the corner. Square edge of the weld surface. 1 2 45° Or Less Electrode Fillet Weld For maximum strength weld both sides of upright section. 2 3 Multi-Layer Deposits Weld a second layer when a heavier fillet is needed. Use any of the weaving patterns shown in Section 9-9. Remove slag before making another weld pass. 1 3 S-0060 / S-0058-A / S-0061 OM-355 Page 32 9-13. Weld Test 1 2 3 3 Strike weld joint in direction shown. A good weld bends over but does not break. 3 2 To 3 in (51-76 mm) 1/4 in (6.4 mm) Vise Weld Joint Hammer 2 To 3 in (51-76 mm) 2 2 1 1 S-0057-B 9-14. Troubleshooting – Porosity Porosity – small cavities or holes resulting from gas pockets in weld metal. Possible Causes Corrective Actions Arc length too long. Reduce arc length. Damp electrode. Use dry electrode. Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before welding. 9-15. Troubleshooting – 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. OM-355 Page 33 9-16. Troubleshooting – Incomplete Fusion Incomplete Fusion – failure of weld metal to fuse completely with base metal or a preceeding weld bead. Possible Causes Corrective Actions Insufficient heat input. Increase amperage. Select larger electrode and increase amperage. Improper welding technique. Place stringer bead in proper location(s) at joint during welding. Adjust work angle or widen groove to access bottom during welding. Momentarily hold arc on groove side walls when using weaving technique. Keep arc on leading edge of weld puddle. Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before welding. 9-17. Troubleshooting – Lack Of Penetration Lack Of Penetration – shallow fusion between weld metal and base metal. Lack of Penetration Good Penetration Possible Causes Corrective Actions Improper joint preparation. Material too thick. Joint preparation and design must provide access to bottom of groove. Improper weld technique. Keep arc on leading edge of weld puddle. Insufficient heat input. Increase amperage. Select larger electrode and increase amperage. Reduce travel speed. 9-18. Troubleshooting – Excessive Penetration Excessive Penetration – weld metal melting through base metal and hanging underneath weld. Excessive Penetration Possible Causes Excessive heat input. Good Penetration Corrective Actions Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. OM-355 Page 34 9-19. Troubleshooting – Burn-Through Burn-Through – weld metal melting completely through base metal resulting in holes where no metal remains. Possible Causes Excessive heat input. Corrective Actions Select lower amperage. Use smaller electrode. Increase and/or maintain steady travel speed. 9-20. Troubleshooting – Waviness Of Bead Waviness Of Bead – weld metal that is not parallel and does not cover joint formed by base metal. Possible Causes Unsteady hand. Corrective Actions Use two hands. Practice technique. 9-21. Troubleshooting – Distortion Distortion – contraction of weld metal during welding that forces base metal to move. Base metal moves in the direction of the weld bead. Possible Causes Excessive heat input. Corrective Actions Use restraint (clamp) to hold base metal in position. Make tack welds along joint before starting welding operation. Select lower amperage for electrode. Increase travel speed. Weld in small segments and allow cooling between welds. OM-355 Page 35 14 not available unless listed. OM-355 Page 36 Ref. ST-802 252-D Figure 10-1. Main Assembly 43 . Hardware is common and 42 41 40 1 39 2 3 4 38 5 6 10 37 36 11 7 8 9 12 35 13 15 16 20 17 19 18 21 22 34 23 24 25 33 32 31 26 27 30 28 29 SECTION 10 – PARTS LIST Item No. Dia. Mkgs. Part No. Description Quantity Figure 10-1. Main Assembly + 1 . . . . . . . . . . . . . . 188 270 . . COVER, top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 2 . . . . . T4 . . . . . 190 332 . . COIL, coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 3 . . . . . . . . . . . . . . 190 436 . . HOLDER, HF coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 4 . . . . . G1 . . . . . 199 854 . . SPARK GAP ASSEMBLY (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 199 855 . . . . BASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 199 856 . . . . HOLDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . . . . . . . . . . . . . . . . . . 196 455 . . . . POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . 5 . . . . . C3 . . . . . 096 761 . . CAPACITOR, mica .002uf 10000 V pnl mtg . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 6 . . . . . T3 . . . . . 208 045 . . XFMR, high voltage 115 v pri 3600 v sec 30 ma w/term . . . . . . . . . . . . . . . 1 . . 7 . . . . . R8 . . . . . 188 067 . . RESISTOR, WW fxd 100w 200 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 8 . . C18, 19 . . . 191 944 . . CAPACITOR, polyp met film 10uf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . 9 . . . . . . . . . . . . . . 188 369 . . HF BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 10 . . . . . . . . . . . . . 190 514 . . HOLDER, HF coil slide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 + 11 . . . . . . . . . . . . . 192 828 . . LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 12 . . . . . . . . . . . . . 188 272 . . FRAME, lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 13 . . . . T1 . . . . . 188 283 . . XFMR, power main 208/230 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . TP1, 2 . . . . 020 520 . . THERMOSTAT, NC open 135C w/insulator . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . . . PLG1 . . . . . 202 119 . . Connector W/Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . PLG7 . . . . . 202 116 . . Connector W/Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . PLG8 . . . . . 202 117 . . Connector W/Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . PLG11 . . . . . 202 118 . . Connector W/Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 14 . . . . . . . . . . . . . 190 341 . . HEAT SINK, rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 15 . . . . R1 . . . . . 186 468 . . RESISTOR, WW fxd 100w 50 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 16 . . . . . . . . . . . . . 188 367 . . BRACKET, rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 17 . MOD1, 2 . . . 208 384 . . THYRISITOR, SCR module 136A 400V dual . . . . . . . . . . . . . . . . . . . . . . . . 2 . . 18 . . . . . . . . . . . . . 190 343 . . BUS BAR, rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 19 . . . . . . . . . . . . . 190 342 . . BUS BAR, rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 20 . . . HD1 . . . . . 191 941 . . TRANSDUCER, current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 21 C7, 8, 9, 10 . 190 460 . . CAPACITOR ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . 22 . . . . D1 . . . . . . 192 116 . . MODULE, diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 23 . . . . C1 . . . . . 191 944 . . CAPACITOR, polyp met film 10uf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 24 . . . . R2 . . . . . 189 132 . . RESISTOR ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 25 . . . TP3 . . . . . 194 363 . . THERMOSTAT, NC open 150F close 125F . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 26 . . . . . . . . . . . . . 133 873 . . VALVE, 24VDC 2way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 27 . . . . . . . . . . . . . 188 268 . . PANEL, rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 28 . . . . . . . . . . . . . 604 102 . . CONNECTOR, clamp cable .690/1.070 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 29 . . . . . . . . . . . . . 190 442 . . CORD SET, 250V 8/3 10 ft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 30 . . . . . . . . . . . . . 188 366 . . PLENUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 31 . . . . . . . . . . . . . 150 783 . . BLADE, fan 9 in 5wg 39deg .312 bore cw . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 32 . . . . . . . . . . . . . 188 706 . . MOTOR, fan 230V 50/60Hz 1550 RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 33 . . . . . . . . . . . . . 187 807 . . BRACKET, fan motor mtg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 + 34 . . . . . . . . . . . . . 188 362 . . PANEL, side right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 35 . . . . . . . . . . . . . 188 269 . . BASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 36 . . . . Z1 . . . . . 188 284 . . STABILIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 37 . . . . S5 . . . . . 187 467 . . SWITCH, polarity/changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 38 . C13, 14 . . . 195 779 . . CAPACITOR ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . 39 . . . . . . . . . . Figure 10-2 . . PANEL, front w/components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 40 . . . . . . . . . . . . . 188 271 . . PANEL, side left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 41 . . . . . . . . . . . . . 141 162 . . HOUSING PLUG AND PINS (service kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . . 42 . . . . . . . . . . . . . 155 552 . . CONNECTOR, torch (service kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . . 43 . . . . . . . . . . . . . 134 460 . . CONNECTOR, work cable (service kit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 . . 44 . . . . . . . . . . . . . 134 327 . . LABEL, warning general precautionary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . 45 . . . . . . . . . . . . . 185 759 . . LABEL, warning electric shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 OM-355 Page 37 Item No. Dia. Mkgs. Part No. Description Quantity Figure 10-1. Main Assembly (continued) . . . . . . . . . . . . . . . . . . . 188 859 . . ACCESSORY KIT (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 043 554 . . . . RFCS-14, foot control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . DB1712RDI . . . . TORCH, TIG 150A 12.5 ft cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 188 860 . . . . WORK CABLE, w/clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 193 094 . . . . KIT, regulator/hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . . . . . . . . . . . . . . 176 840 . . . . HOLDER, electorde w/cable & dinse connector . . . . . . . . . . . . . . . . . . . . 1 +When ordering a component originally displaying a precautionary label, the label should also be ordered. To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor. OM-355 Page 38 . Hardware is common and 3 not available unless listed. 7 4 6 5 2 1 8 13 9 4 10 14 12 11 ST-802 254-A Figure 10-2. Panel, Front w/Components Item No. Dia. Mkgs. Part No. Description Quantity Figure 10-2. Panel, Front w/Components (Figure 10-1 Item 39) . . 1 . . . . . . . . . . . . . . 174 991 . . .. 2 ......................... . . 3 . . . . RC7 . . . . . 143 976 . . . . 4 . . . . . . . . . . . . . . 186 092 . . . . 5 . . . . . . . . . . . . . . 192 451 . . . . 6 . . . . PC1 . . . . . 190 772 . . . . . . . . . . PLG3 . . . . . 115 092 . . . . . . . . . . PLG6 . . . . . 115 091 . . . . . . . . . . PLG20 . . . . 115 093 . . . . . . . . . . PLG10 . . . 131 052 . . . . 7 . . . . . . . . . . . . . . 192 279 . . . . 8 . . . . . . . . . . . . . . . 111 634 . . . . 9 . . . . . S1 . . . . . 128 755 . . . . 10 . . C5, 6 . . . . 188 273 . . . . 11 . . . . . . . . . . . . . 175 952 . . . . 12 . . . . . . . . . . . . . 169 136 . . . . 13 . . . . . . . . . . . . . 174 992 . . . . 14 . . . . . . . . . . . . . 185 703 . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 NAMEPLATE, (order by model and serial number) . . . . . . . . . . . . . . . . . . . 1 RECEPTACLE W/ SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 RECPT KIT, Din style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 COVER, LED diffuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CIRCUIT CARD ASSEMBLY, control w/ hardware . . . . . . . . . . . . . . . . . . . 1 CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ENCLOSURE, circuit card assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CAPACITOR ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SWITCH, tgl DPST 40A 600VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PANEL, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PLASTIC, handle switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PIN, handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 KNOB, pointer .840 DIA x .250 ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 RECEPTACLE, Twistlock assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 +When ordering a component originally displaying a precautionary label, the label should also be ordered. To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor. OM-355 Page 39 Effective January 1, 2002 (Equipment with a serial number preface of “LC” or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. Warranty Questions? Call 1-800-4-A-MILLER for your local Miller distributor. Your distributor also gives you ... Service You 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 expertise of the distributor and Miller is there to help you, every step of the way. * LIMITED WARRANTY – Subject to the terms and conditions below, Miller Electric Mfg. Co., Appleton, Wisconsin, 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. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS. Within the warranty periods listed below, Miller will repair or replace any warranted parts or components that fail due to such defects in material or workmanship. Miller must be notified in writing within thirty (30) days of such defect or failure, at which time Miller will provide instructions on the warranty claim procedures to be followed. Miller shall honor warranty claims on warranted equipment listed below in the event of such a failure within the warranty time periods. All warranty time periods start on the date that the equipment was delivered to the original retail purchaser, or one year after the equipment is sent to a North American distributor or eighteen months after the equipment is sent to an International distributor. 1. 5 Years Parts — 3 Years Labor * * 2. 3 Years — Parts and Labor * * * * * * 3. Original main power rectifiers Inverters (input and output rectifiers only) Transformer/Rectifier Power Sources Plasma Arc Cutting Power Sources Semi-Automatic and Automatic Wire Feeders Inverter Power Supplies Intellitig Engine Driven Welding Generators (NOTE: Engines are warranted separately by the engine manufacturer.) 1 Year — Parts and Labor Unless Specified * * * * * * * * * * * * * * * * * * DS-2 Wire Feeder Motor Driven Guns (w/exception of Spoolmate Spoolguns) Process Controllers Positioners and Controllers Automatic Motion Devices RFCS Foot Controls Induction Heating Power Sources Water Coolant Systems Flowgauge and Flowmeter Regulators (No Labor) HF Units Grids Maxstar 85, 140 Spot Welders Load Banks Racks Running Gear/Trailers Plasma Cutting Torches (except APT & SAF Models) Field Options (NOTE: Field options are covered under True Blue for the remaining warranty period of the product they are installed in, or for a minimum of one year — whichever is greater.) 4. 6 Months — Batteries 5. 90 Days — Parts * * MIG Guns/TIG Torches Induction Heating Coils and Blankets * * * * * APT, ZIPCUT & PLAZCUT Model Plasma Cutting Torches Remote Controls Accessory Kits Replacement Parts (No labor) Spoolmate Spoolguns Canvas Covers Miller’s True Blue Limited Warranty shall not apply to: 1. Consumable components; such as contact tips, cutting nozzles, contactors, brushes, slip rings, relays or parts that fail due to normal wear. (Exception: brushes, slip rings, and relays are covered on Bobcat, Trailblazer, and Legend models.) 2. Items furnished by Miller, but manufactured by others, such as engines or trade accessories. These items are covered by the manufacturer’s warranty, if any. 3. Equipment that has been modified by any party other than Miller, or equipment that has been improperly installed, improperly operated or misused based upon industry standards, or equipment which has not had reasonable and necessary maintenance, or equipment which has been used for operation outside of the specifications for the equipment. MILLER PRODUCTS ARE INTENDED FOR PURCHASE AND USE BY COMMERCIAL/INDUSTRIAL USERS AND PERSONS TRAINED AND EXPERIENCED IN THE USE AND MAINTENANCE OF WELDING EQUIPMENT. In the event of a warranty claim covered by this warranty, the exclusive remedies shall be, at Miller’s option: (1) repair; or (2) replacement; or, where authorized in writing by Miller in appropriate cases, (3) the reasonable cost of repair or replacement at an authorized Miller service station; or (4) payment of or credit for the purchase price (less reasonable depreciation based upon actual use) upon return of the goods at customer’s risk and expense. Miller’s option of repair or replacement will be F.O.B., Factory at Appleton, Wisconsin, or F.O.B. at a Miller authorized service facility as determined by Miller. Therefore no compensation or reimbursement for transportation costs of any kind will be allowed. TO THE EXTENT PERMITTED BY LAW, THE REMEDIES PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY OTHER LEGAL THEORY. ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GUARANTY OR REPRESENTATION AS TO PERFORMANCE, AND ANY REMEDY FOR BREACH OF CONTRACT TORT OR ANY OTHER LEGAL THEORY WHICH, BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED BY MILLER. Some states in the U.S.A. do not allow limitations of how long an implied warranty lasts, or the exclusion of incidental, indirect, special or consequential damages, so the above limitation or exclusion may not apply to you. This warranty provides specific legal rights, and other rights may be available, but may vary from state to state. In Canada, legislation in some provinces provides for certain additional warranties or remedies other than as stated herein, and to the extent that they may not be waived, the limitations and exclusions set out above may not apply. This Limited Warranty provides specific legal rights, and other rights may be available, but may vary from province to province. miller_warr 6/02 Owner’s Record Please complete and retain with your personal records. Model Name Serial/Style Number Purchase Date (Date which equipment was delivered to original customer.) Distributor Address City State Zip For Service Call 1-800-4-A-Miller or see our website at www.MillerWelds.com to locate a DISTRIBUTOR or SERVICE AGENCY near you. Always provide Model Name and Serial/Style Number. Contact your Distributor for: Welding Supplies and Consumables Options and Accessories Personal Safety Equipment Service and Repair Miller Electric Mfg. Co. Replacement Parts Training (Schools, Videos, Books) Technical Manuals (Servicing Information and Parts) Circuit Diagrams Welding Process Handbooks An Illinois Tool Works Company 1635 West Spencer Street Appleton, WI 54914 USA International Headquarters–USA USA Phone: 920-735-4505 Auto-Attended USA & Canada FAX: 920-735-4134 International FAX: 920-735-4125 European Headquarters – United Kingdom Phone: 44 (0) 1204-593493 FAX: 44 (0) 1204-598066 www.MillerWelds.com Contact the Delivering Carrier for: 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. PRINTED IN USA 2002 Miller Electric Mfg. Co. 5/02 ">

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