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— answers from the official manualAnswers from the official manual.
Common questions
Common Questions
9 totalWhat should I do if my Miller Millermatic 135 overheats?
If the unit overheats, it will shut down and run the cooling fan. Wait for fifteen minutes for the unit to cool before reducing amperage or duty cycle before welding again (Page 16).
How do I install the welding gun on my Miller Millermatic 135?
To install the welding gun, loosen the knob and insert the gun end through the opening until it bottoms against the drive assembly. Then tighten the knob (Page 20).
What steps should I take to ensure safety when installing the gas supply regulator?
Obtain a cylinder, chain it securely to support so it cannot fall and break off valve. Remove cap from valve, stand to side; open valve slightly to blow dust and dirt out of valve. Close valve again before connecting regulator/flowmeter (Page 23).
How do I connect the input power for a 115 VAC model of Millermatic 135?
Connect to an individual branch circuit with a protected time-delay fuse or breaker, and ensure it is rated at least 20 amperes. Use an extension cord of 14 AWG up to 50 ft (15 m) or 12 AWG for 50 up to 200 ft (61 m). Special installations may be needed near gasoline or volatile liquids (Page 23-24).
How often should I perform routine maintenance on my Miller Millermatic 135?
Routine maintenance for this unit includes replacing unreadable labels, repairing or replacing cracked weld cables, and cleaning and tightening weld terminals every three months. Additionally, blow out or vacuum inside the machine every six months or monthly during heavy service (Page 32).
What should I do if a welding wire stops feeding?
Check for proper polarity connections, tighten thumbscrew securing gun end to feed head adapter, replace contact tip (Section 6-5), adjust drive roll pressure or change groove as needed on drive roll (Sections 4-11 and 6-4). Also check clearance at drive assembly and liner, clean/replace wire inlet guide if dirty/plugged (Page 39).
Full Manual
52 pages
|Visit our website at www.MillerWelds.com
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OM-1324 204 408D January 2004
Processes
MIG (GMAW) Welding Flux Cored (FCAW) Welding

Description



Arc Welding Power Source And Wire Feeder
Millermatic 135/175 And M-10 Gun
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 parts list will then help you to decide the exact part you may need to fix the problem. Warranty and service information for your particular model are also provided.
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Miller is the first welding equipment manufacturer in the U.S.A. to be registered to the ISO 9001:2000 Quality System Standard.

Miller Electric manufactures a full line of welders and welding related equipment. For information on other quality Miller products, contact your local Miller distributor to receive the latest full line catalog or individual catalog sheets. To locate your nearest distributor or service agency call 1-800-4-A-Miller, or visit us at www.MillerWelds.com on the web.
Mil_Thank 7/03
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Working as hard as you do − every power source from Miller is backed by the most hassle-free warranty in the business.

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################# SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 2 − CONSIGNES DE SÉCURITÉ − À LIRE AVANT UTILISATION 5. . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 3 − SPECIFICATIONS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 4 − INSTALLATION 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 5 − OPERATION 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 6 − MAINTENANCE &TROUBLESHOOTING 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 7 − ELECTRICAL DIAGRAM 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 8 − MIG WELDING (GMAW) GUIDELINES 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
################# SECTION 9 − PARTS LIST 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OPTIONS AND ACCESSORIESWARRANTY
###### SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
som _8/03
######## 1-1. Symbol Usage
Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols.
Marks a special safety message.
Means “Note”; not safety related.
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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
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 1-5. Read and follow all Safety Standards.
Only qualified persons should install, operate, maintain, and repair this unit.
During operation, keep everybody, especially children, away.
########## 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.
Do not touch live electrical parts. Wear dry, hole-free insulating gloves and body protection.
Insulate yourself from work and ground using dry insulating mats or covers big enough to prevent any physical contact with the work or ground.
Do not use AC output in damp areas, if movement is confined, or if there is a danger of falling.
Use AC output ONLY if required for the welding process. If AC output is required, use remote output control if present on unit.
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).
Properly install and ground this equipment according to its Owner’s Manual and national, state, and local codes.
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.
When making input connections, attach proper grounding conductor first − double-check connections. Frequently inspect input power cord for damage or bare wiring − replace cord immediately if damaged − bare wiring can kill. Turn off all equipment when not in use. Do not use worn, damaged, undersized, or poorly spliced cables. Do not drape cables over your body.
If earth grounding of the workpiece is required, ground it directly with a separate cable.
Do not touch electrode if you are in contact with the work, ground, or another electrode from a different machine.
Use only well-maintained equipment. Repair or replace damaged parts at once. Maintain unit according to manual.
Wear a safety harness if working above floor level. Keep all panels and covers securely in place. Clamp work cable with good metal-to-metal contact to workpiece or worktable as near the weld as practical. Insulate work clamp when not connected to workpiece to prevent contact with any metal object. 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.
Turn Off inverter, disconnect input power, and discharge input capacitors according to instructions in Maintenance Section before touching any parts.
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############# FUMES AND GASES can be hazardous.
Welding produces fumes and gases. Breathing these fumes and gases can be hazardous to your health.
Keep your head out of the fumes. Do not breathe the fumes. If inside, ventilate the area and/or use exhaust at the arc to remove welding fumes and gases. If ventilation is poor, use an approved air-supplied respirator.
Read the Material Safety Data Sheets (MSDSs) and the manufacturer’s instructions for metals, consumables, coatings, cleaners, and degreasers.
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.
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.
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.
########## 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.
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).
Wear approved safety glasses with side shields under your helmet.
Use protective screens or barriers to protect others from flash and glare; warn others not to watch the arc.
Wear protective clothing made from durable, flame-resistant material (leather and wool) and foot protection.
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############ 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.
Protect yourself and others from flying sparks and hot metal. Do not weld where flying sparks can strike flammable material. Remove all flammables within 35 ft (10.7 m) of the welding arc. If this is not possible, tightly cover them with approved covers. Be alert that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. Watch for fire, and keep a fire extinguisher nearby. Be aware that welding on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.
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).
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.
Do not use welder to thaw frozen pipes. Remove stick electrode from holder or cut off welding wire at contact tip when not in use. Wear oil-free protective garments such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap. Remove any combustibles, such as a butane lighter or matches, from your person before doing any welding.
########## FLYING METAL can injure eyes.
Welding, chipping, wire brushing, and grinding cause sparks and flying metal. As welds cool, they can throw off slag.
Wear approved safety glasses with side shields even under your welding helmet.
########## BUILDUP OF GAS can injure or kill.
Shut off shielding gas supply when not in use. Always ventilate confined spaces or use approved air-supplied respirator.
########## HOT PARTS can cause severe burns.
Do not touch hot parts bare handed. Allow cooling period before working on gun or torch.
################ MAGNETIC FIELDS can affect pacemakers.
Pacemaker wearers keep away.
Wearers should consult their doctor before going near arc welding, gouging, or spot welding operations.
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########## NOISE can damage hearing.
Noise from some processes or equipment can damage hearing.
Wear approved ear protection if noise level is high.
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########## 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.
Protect compressed gas cylinders from excessive heat, mechanical shocks, slag, open flames, sparks, and arcs.
Install cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping.
Keep cylinders away from any welding or other electrical circuits. Never drape a welding torch over a gas cylinder. Never allow a welding electrode to touch any cylinder. Never weld on a pressurized cylinder − explosion will result.
Use only correct shielding gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them and associated parts in good condition.
Turn face away from valve outlet when opening cylinder valve. Keep protective cap in place over valve except when cylinder is in use or connected for use.
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.
Do not install or place unit on, over, or near combustible surfaces. Do not install unit near flammables.
Do not overload building wiring − be sure power supply system is properly sized, rated, and protected to handle this unit.
########## FALLING UNIT can cause injury.
Use lifting eye to lift unit only, NOT running gear, gas cylinders, or any other accessories. Use equipment of adequate capacity to lift and support unit.
If using lift forks to move unit, be sure forks are long enough to extend beyond opposite side of unit.
########## OVERUSE can cause OVERHEATING
Allow cooling period; follow rated duty cycle. Reduce current or reduce duty cycle before starting to weld again. Do not block or filter airflow to unit.
############ STATIC (ESD) can damage PC boards.
Put on grounded wrist strap BEFORE handling boards or parts. Use proper static-proof bags and boxes to store, move, or ship PC boards.
########## MOVING PARTS can cause injury.
Keep away from moving parts. Keep away from pinch points such as drive rolls.
########## WELDING WIRE can cause injury.
Do not press gun trigger until instructed to do so.
Do not point gun toward any part of the body, other people, or any metal when threading welding wire.
########## MOVING PARTS can cause injury.
Keep away from moving parts such as fans. Keep all doors, panels, covers, and guards closed and securely in place.
############## H.F. RADIATION can cause interference.
High-frequency (H.F.) can interfere with radio navigation, safety services, computers, and communications equipment.
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.
############## ARC WELDING can cause interference.
Electromagnetic energy can interfere with sensitive electronic equipment such as computers and computer-driven equipment such as robots.
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. California Proposition 65 Warnings| |---|
Welding or cutting equipment 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.)
Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
For Gasoline Engines:
Engine exhaust contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For Diesel Engines:
Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.
######## 1-5. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, from American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126 (phone: 305-443-9353, website: www.aws.org).
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping, American Welding Society Standard AWS F4.1, from American Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126 (phone: 305-443-9353, website: www.aws.org).
National Electrical Code, NFPA Standard 70, from National Fire Protection Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (phone: 617−770−3000, website: www.nfpa.org and www. sparky.org).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association, 1735 Jefferson Davis Highway, Suite 1004, Arlington, VA 22202−4102 (phone: 703−412−0900, website: www.cganet.com).
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 (phone: 800−463−6727 or in Toronto 416−747−4044, website: www.csa−international.org).
Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute, 11 West 42nd Street, New York, NY 10036−8002 (phone: 212−642−4900, website: www.ansi.org).
Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, NFPA Standard 51B, from National Fire Protection Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (phone: 617−770−3000,website: www.nfpa.org and www. sparky.org).
OSHA, Occupational Safety and Health Standards for General Industry, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q, and Part 1926, Subpart J, from U.S. Government Printing Office, Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (there are 10 Regional Offices−−phone for Region 5, Chicago, is 312−353−2220,website: www.osha.gov).
######## 1-6. 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:
################# About Pacemakers:
Pacemaker wearers consult your doctor first. If cleared by your doctor, then following the above procedures is recommended.
##### SECTION 2 − CONSIGNES DE SÉCURITÉ − À LIRE AVANT UTILISATION
som_fre 8/03
|2-1. Signification des symboles| |---|
Signifie « Mise en garde. Faire preuve de vigilance. » Cette procédure présente des risques identifiés par les symboles adjacents aux directives.
################# Identifie un message de sécurité particulier.
Signifie « NOTA » ; n’est pas relatif à la sécurité.
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Ce groupe de symboles signifie « Mise en garde. Faire preuve de vigilance. » Il y a des dangers liés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVEMENT et aux PIÈCES CHAUDES. Se reporter aux symboles et aux directives ci-dessous afin de connaître les mesures à prendre pour éviter tout danger.
|2-2. Dangers relatifs au soudage à l’arc| |---|
Les symboles ci-après sont utilisés tout au long du présent manuel pour attirer l’attention sur les dangers potentiels et les identifier. Lorsqu’on voit un symbole, faire preuve de vigilance et suivre les directives mentionnées afin d’éviter tout danger. Les consignes de sécurité énoncées ci-après ne font que résumer le contenu des normes de sécurité mentionnées à la section 2-4. Lire et respecter toutes ces normes.
L’installation, l’utilisation, l’entretien et les réparations ne doivent être confiés qu’à des personnes qualifiées.
Pendant l’utilisation de l’appareil, tenir à l’écart toute personne, en particulier les enfants.
########## LES DÉCHARGES ÉLECTRIQUES peuvent être mortelles.
Un simple contact avec des pièces sous tension peut causer une électrocution ou des blessures graves. L’électrode et le circuit de soudage sont sous tension dès que l’appareil est en fonctionnement. Le circuit
d’entrée et les circuits internes de l’appareil sont également sous tension. 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. Tout matériel mal installé ou mal mis à la terre présente un danger.
Ne jamais toucher aux pièces électriques sous tension. Porter des gants et des vêtements de protection secs et exempts de trous.
S’isoler de la pièce et de la terre au moyen de tapis ou autres dispositifs isolants suffisamment grands pour empêcher tout contact physique avec la pièce ou la terre.
Ne pas se servir d’une source de courant alternatif dans les zones humides, les endroits confinés ou là où on risque de tomber. Ne se servir d’une source de courant alternatif QUE si le procédé de soudage l’exige. Si l’utilisation d’une source de courant alternatif s’avère nécessaire, se servir de la fonction de télécommande si l’appareil en est équipé.
Couper l’alimentation ou arrêter le moteur avant de procéder à l’installation, à la réparation ou à l’entretien de l’appareil. Couper/étiqueter l’alimentation selon la norme OSHA 29 CFR 1910.147 (voir les normes de sécurité).
Installer et mettre à la terre correctement l’appareil conformément à son manuel d’utilisation et aux codes nationaux, provinciaux et municipaux.
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.
Pour exécuter les branchements d’entrée, fixer d’abord le conducteur de mise à la terre adéquat et contre−vérifier les connexions.
Vérifier fréquemment le cordon d’alimentation et s’assurer qu’il n’est ni endommagé ni dénudé ; le remplacer immédiatement s’il est endommagé − tout câble dénudé peut causer une électrocution.
Mettre l’appareil hors tension quand on ne l’utilise pas. Ne pas utiliser de câbles usés, endommagés, de calibre insuffisant ou mal épissés. Ne pas s’enrouler les câbles autour du corps. Si la pièce soudée doit être mise à la terre, le faire directement avec un câble distinct. Ne pas toucher l’électrode quand on est en contact avec la pièce, la terre ou une électrode d’une autre machine.
N’utiliser que du matériel en bon état. Réparer ou remplacer sur−le− champ les pièces endommagées. Entretenir l’appareil conformément au présent manuel.
Porter un harnais de sécurité quand on travaille en hauteur. Maintenir solidement en place tous les panneaux et capots.
Fixer le câble de retour de façon à obtenir un bon contact métal sur métal avec la pièce à souder ou la table de travail, le plus près possible de la soudure.
Ne pas connecter plus d’une électrode ou plus d’un câble de masse à un même terminal de sortie.
########## Il subsiste un COURANT CONTINU IMPORTANT dans les convertisseurs après la suppression de l’alimentation électrique.
Arrêter les convertisseurs, débrancher le courant électrique et décharger les condensateurs d’alimentation selon les instructions énoncées à la section Entretien avant de toucher les pièces.
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########## LES FUMÉES ET LES GAZ peuvent être dangereux.
Le soudage génère des fumées et des gaz dont l’inhalation peut être dangereuse pour la santé.
Se tenir à distance des fumées et ne pas les inhaler.
À l’intérieur, ventiler la zone et/ou utiliser un dispositif d’aspiration au niveau de l’arc pour l’évacuation des fumées et des gaz de soudage.
Si la ventilation est insuffisante, utiliser un respirateur à adduction d’air agréé.
Lire les fiches techniques de santé−sécurité (FTSS) et les instructions du fabricant concernant les métaux, les consommables, les revêtements, les nettoyants et les dégraisseurs.
Ne travailler dans un espace clos que s’il est bien ventilé ou porter un respirateur à adduction d’air. Demander toujours à un surveillant dûment formé de se tenir à proximité. Des fumées et des gaz de soudage peuvent se substituer à l’air, abaisser la teneur en oxygène et causer des lésions ou des accidents mortels. S’assurer que l’air est respirable.
Ne pas souder 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 de métaux munis d’un revêtement, tels que la tôle d’acier galvanisée, plombée ou cadmiée, à moins que le revêtement n’ait été enlevé dans la zone de soudage, que l’endroit soit bien ventilé, et si nécessaire, porter un respirateur à adduction d’air. Les revêtements et tous les métaux renfermant ces éléments peuvent dégager des fumées toxiques lorsqu’on les soude.
########## LES RAYONS DE L’ARC peuvent causer des brûlures oculaires et cutanées.
Le rayonnement de l’arc génère des rayons visibles et invisibles intenses (ultraviolets et infrarouges) susceptibles de causer des brûlures oculaires et cutanées. Des étincelles sont projetées pendant le soudage.
Porter un masque de soudage muni d’un filtre de la nuance adéquate pour se protéger le visage et les yeux pendant le soudage ou pour regarder (voir les normes de sécurité ANSI Z49.1 et Z87.1).
Porter des lunettes de sécurité à écrans latéraux sous le masque.
Utiliser des écrans ou des barrières pour protéger les tiers de l’éclat éblouissant ou aveuglant de l’arc ; leur demander de ne pas regarder l’arc.
Porter des vêtements de protection en matière durable et ignifuge (cuir ou laine) et des chaussures de sécurité.
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########## LE SOUDAGE peut causer un incendie ou une explosion.
Le soudage effectué sur des récipients fermés tels que des réservoirs, des fûts ou des conduites peut causer leur éclatement. Des étincelles peuvent être projetées de l’arc de soudure. La projection d’étincelles, les
pièces chaudes et les équipements chauds peuvent causer des incendies et des brûlures. Le contact accidentel de l’électrode avec tout objet métallique peut causer 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.
Se protéger et protéger les tiers de la projection d’étincelles et de métal chaud. Ne pas souder à un endroit où des étincelles peuvent tomber sur des substances inflammables.
Placer 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 agréées.
Des étincelles et des matières en fusion peuvent facilement passer même par des fissures et des ouvertures de petites dimensions. Surveiller tout déclenchement d’incendie et tenir un extincteur à proximité. Le soudage effectué sur un plafond, un plancher, une paroi ou une cloison peut déclencher un incendie de l’autre côté.
Ne pas souder des récipients fermés tels que des réservoirs, des fûts ou des conduites, à moins qu’ils n’aient été préparés conformément à l’AWS F4.1 (voir les normes de sécurité).
Brancher le câble sur la pièce le plus près possible de la zone de soudage pour éviter que le courant ne circule sur une longue distance, par des chemins inconnus, et ne cause des risques d’électrocution et d’incendie.
Ne pas utiliser le poste de soudage pour dégeler des conduites gelées. En cas de non utilisation, enlever la baguette d’électrode du porte− électrode ou couper le fil au raz du tube−contact.
Porter des vêtements de protection exempts d’huile tels que des gants en cuir, une chemise en tissu épais, des pantalons sans revers, des chaussures montantes et un masque.
Avant de souder, retirer tout produit combustible de ses poches, tel qu’un briquet au butane ou des allumettes.
########## LES PARTICULES PROJETÉES peuvent blesser les yeux.
Le soudage, le burinage, le passage de la pièce à la brosse métallique et le meulage provoquent l’émission d’étincelles et de particules métalli-
ques. Pendant leur refroidissement, les soudures risquent de projeter du laitier.
Porter des lunettes de sécurité à écrans latéraux agréés, même sous le masque de soudage.
########## LES ACCUMULATIONS DE GAZ peuvent causer des blessures ou même la mort.
Couper l’alimentation en gaz protecteur en cas de non utilisation.
Veiller toujours à bien ventiler les espaces confinés ou porter un respirateur à adduction d’air agréé.
########## LES PIÈCES CHAUDES peuvent causer des brûlures graves.
Ne pas toucher les pièces chaudes à main nue. Prévoir une période de refroidissement avant d’utiliser le pistolet ou la torche.
############# LES CHAMPS MAGNÉTIQUES peuvent perturber le fonctionnement des stimulateurs cardiaques.
Les personnes qui portent un stimulateur cardiaque doivent se tenir à distance.
Ils doivent consulter leur médecin avant de s’approcher d’un lieu où on exécute des opérations de soudage à l’arc, de gougeage ou de soudage par points.
| | |---|
########## LE BRUIT peut affecter l’ouïe.
Le bruit de certains processus et équipements peut affecter l’ouïe.
Porter des protecteurs d’oreille agréés si le niveau sonore est trop élevé.
|| |---|
########## Les BOUTEILLES endommagées peuvent exploser.
Les bouteilles de gaz protecteur contiennent du gaz sous haute pression. Toute bouteille endommagée peut exploser. Comme les bouteilles de gaz font normalement partie du procédé de soudage, les
manipuler avec précaution.
Protéger les bouteilles de gaz comprimé de la chaleur excessive, des chocs mécaniques, du laitier, des flammes nues, des étincelles et des arcs.
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.
Tenir les bouteilles éloignées des circuits de soudage ou autres circuits électriques.
Ne jamais poser une torche de soudage sur une bouteille de gaz. Ne jamais mettre une électrode de soudage en contact avec une bouteille de gaz. Ne jamais souder une bouteille contenant du gaz sous pression − elle risquerait d’exploser.
N’utiliser que les bouteilles de gaz protecteur, régulateurs, tuyaux et raccords adéquats pour l’application envisagée ; les maintenir en bon état, ainsi que les pièces connexes.
Détourner la tête lorsqu’on ouvre la soupape d’une bouteille. Laisser le capuchon protecteur sur la soupape, sauf en cas d’utilisation ou de branchement de la bouteille
Lire et suivre les instructions concernant les bouteilles de gaz comprimé, les équipements associés et les publications P−1 de la CGA, mentionnées dans les normes de sécurité.
|2-3. Autres symboles relatifs à l’installation, au fonctionnement et à l’entretien de l’appareil.| |---|
########## Risque D’INCENDIE OU D’EXPLOSION
Ne pas placer l’appareil sur une surface inflammable, ni au−dessus ou à proximité d’elle.
Ne pas installer l’appareil à proximité de produits inflammables.
Ne pas surcharger l’installation électrique − s’assurer que l’alimentation est correctement dimensionnée et protégée avant de mettre l’appareil en service.
########## LA CHUTE DE L’APPAREIL peut blesser.
N’utiliser que l’anneau de levage pour lever l’appareil. NE PAS utiliser le chariot, les bouteilles de gaz ou tout autre accessoire.
Utiliser un engin de capacité adéquate pour lever l’appareil.
Si on utilise un chariot élévateur pour déplacer l’unité, s’assurer que les fourches sont suffisamment longues pour dépasser du côté opposé de l’appareil.
########## L’EMPLOI EXCESSIF peut FAIRE SURCHAUFFER L’ÉQUIPEMENT.
Prévoir une période de refroidissement ; respecter le cycle opératoire nominal. Réduire le courant ou le cycle opératoire avant de reprendre le soudage.
Ne pas obstruer les orifices ou filtrer l’alimentation en air du poste.
########## LES CHARGES ÉLECTROSTATIQUES peuvent endommager les circuits imprimés.
Mettre un bracelet antistatique AVANT de manipuler des cartes ou des pièces.
Utiliser des pochettes et des boîtes antistatiques pour stocker, déplacer ou expédier des cartes de circuits imprimés.
########## LES PIÈCES MOBILES peuvent causer des blessures.
Se tenir à l’écart des pièces mobiles. Se tenir à l’écart des points de coincement tels que les dévidoirs.
########## LES FILS DE SOUDAGE peuvent causer des blessures.
Ne pas appuyer sur la gâchette avant d’en avoir reçu l’instruction.
Ne pas diriger le pistolet vers soi, vers d’autres personnes ou vers toute pièce mécanique en engageant le fil de soudage.
########## LES ORGANES MOBILES peuvent causer des blessures.
Se tenir à l’écart des organes mobiles comme les ventilateurs.
Maintenir fermés et bien fixés les portes, panneaux, recouvrements et dispositifs de protection.
| | |---|
########## LE RAYONNEMENT HAUTE FRÉQUENCE (H. F.) risque de causer des interférences.
Le rayonnement haute fréquence peut causer des interférences avec les équipements de radionavigation et de communication, les services de sécurité et les ordinateurs.
Ne demander qu’à des personnes qualifiées familiarisées avec les équipements électroniques de faire fonctionner l’installation. L’utilisateur est tenu de faire corriger rapidement par un électricien qualifié les interférences causées par l’installation. Si la Federal Communications Commission signale des interférences, arrêter immédiatement l’appareil. Faire régulièrement contrôler et entretenir l’installation.
Maintenir soigneusement fermés les panneaux et les portes des sources de haute fréquence, maintenir le jeu d’éclatement au réglage adéquat et utiliser une terre et un blindage pour réduire les interférences éventuelles.
| | |---|
########## LE SOUDAGE À L’ARC peut causer des interférences.
L’énergie électromagnétique peut causer des interférences avec 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 au point de vue électromagnétique.
Pour réduire la possibilité d’interférence, maintenir les câbles de soudage aussi courts que possible, les grouper, et les poser aussi bas que possible (par ex. : à terre).
Veiller à souder à une distance de 100 mètres de tout équipement électronique sensible. Veiller à ce que le poste de soudage soit posé et mis à la terre conformément au présent manuel.
En cas d’interférences après exécution des directives 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.
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.
|2-4. Principales normes de sécurité| |---|
Safety in Welding, Cutting, and Allied Processes, norme ANSI Z49.1, de l’American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126 (téléphone : (305) 443−9353, site Web : www.aws.org).
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping, norme American Welding Society AWS F4.1, de l’American Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126 (téléphone : (305) 443−9353, site Web : www.aws.org).
National Electrical Code, norme NFPA 70, de la National Fire Protection Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (téléphone : (617) 770−3000, sites Web : www.nfpa.org et www.sparky.org).
Safe Handling of Compressed Gases in Cylinders, brochure CGA P−1, de la Compressed Gas Association, 1735 Jefferson Davis Highway, Suite 1004, Arlington, VA 22202−4102 (téléphone : (703) 412−0900, site Web : www.cganet.com).
Code for Safety in Welding and Cutting, norme CSA W117.2, de la Canadian Standards Association, Standards Sales, 178 boulevard
Rexdale, Rexdale (Ontario) Canada M9W 1R3 (téléphone : (800) 463−6727 ou à Toronto : (416) 747−4044, site Web : www.csa−international.org).
Practice For Occupational And Educational Eye And Face Protection, norme ANSI Z87.1, de l’American National Standards Institute, 11 West 42nd Street, New York, NY 10036−8002 (téléphone : (212) 642−4900, site Web : www.ansi.org).
Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, norme NFPA 51B, de la National Fire Protection Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (téléphone : (617) 770−3000, site Web : www.nfpa.org et www.sparky.org).
OSHA, Occupational Safety and Health Standards for General Industry, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q, and Part 1926, Subpart J, de l’U.S. Government Printing Office, Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (il y a 10 bureaux régionaux − Téléphone pour la Région 5, Chicago : (312) 353−2220, site Web : www.osha.gov).
|2-5. Information sur les champs électromagnétiques| |---|
Données sur le soudage électrique et les effets des champs magnétiques basse fréquence sur l’organisme
En parcourant les câbles de soudage, le courant crée des champs électromagnétiques. Les effets potentiels de tels champs restent préoccupants. Cependant, après avoir examiné plus de 500 études qui ont été faites pendant une période de recherche de 17 ans, un comité de spécialistes du National Research Council a conclu : « L’accumulation de preuves n’a pas démontré que l’exposition aux champs magnétiques et aux champs électriques à haute fréquence constitue un risque pour la santé humaine ». Toutefois, les études et l’examen des preuves se poursuivent. En attendant les conclusions finales de la recherche, il serait souhaitable de réduire l’exposition aux champs électromagnétiques pendant le soudage ou le coupage.
Afin de réduire les champs électromagnétiques en milieu de travail, respecter les consignes suivantes :
Les personnes qui portent un stimulateur cardiaque doivent avant tout consulter leur médecin. Si ce dernier les déclare aptes, il leur est recommandé de respecter les consignes ci-dessus.
##### SECTION 3 − SPECIFICATIONS
######## 3-1. Specifications
|Rated Welding Output|Amperage Range|Amperage Range|Maximum Open-Circuit Voltage DC|Amperes Input at Rated Load Output 115 V, 60 Hz, Single-Phase|KVA|KW|Weight W/ Gun|Overall Dimensions| |---|---|---|---|---|---|---|---|---| |90 A @ 18 Volts DC, 20% Duty Cycle 63 A @ 21 Volts DC, 20% Duty Cycle*|30 − 135|30 − 135|28|20
15*|2.88
2.20*|2.40
1.77*|60 lb (27 kg)|Length: 17-1/2 in (444 mm)
Width: 10-5/8 in (273 mm)
Height: 15-3/4 in (400 mm)| |Wire Type And Dia|Solid|Stainless|Flux Cored|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range| |Wire Type And Dia|.024 - .030 in (0.6 - 0.8 mm)|.023 - .030 in (0.6 - 0.8 mm)|.030 - .035 in (0.8 - 0.9 mm)|40 − 620 IPM (1.0 − 15.7 m/min) At No Load 20 − 600 IPM (0.5 − 15.2 m/min) Feeding Wire|40 − 620 IPM (1.0 − 15.7 m/min) At No Load 20 − 600 IPM (0.5 − 15.2 m/min) Feeding Wire|40 − 620 IPM (1.0 − 15.7 m/min) At No Load 20 − 600 IPM (0.5 − 15.2 m/min) Feeding Wire|40 − 620 IPM (1.0 − 15.7 m/min) At No Load 20 − 600 IPM (0.5 − 15.2 m/min) Feeding Wire|40 − 620 IPM (1.0 − 15.7 m/min) At No Load 20 − 600 IPM (0.5 − 15.2 m/min) Feeding Wire| |* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|* CSA Rating|
|Rated Welding Output|Amperage Range|Maximum OpenCircuit Voltage DC|Amperes Input at Rated Load Output 230 V, 50/60 Hz, Single-Phase|KVA|KW|Weight W/ Gun|Overall Dimensions| |---|---|---|---|---|---|---|---| |130 A @ 20 Volts DC, 30% Duty Cycle At 60 Hz Input|30 − 175|30|19.5|4.60|3.75|73 lb (33.0 kg)|Length: 17-1/2 in (444 mm)
Width: 10-5/8 in (273 mm)
Height: 15-3/4 in (400 mm)| |Wire Type And Dia
|Solid/ Stainless|Flux Cored|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range|Wire Feed Speed Range| |Wire Type And Dia
|.024 − .035 in (0.6 − 0.9 mm)|.030 − .045 in (0.8 − 1.2 mm)|40 − 720 IPM (1.0 − 18.3 m/min) At No Load 20 − 700 IPM (0.5 − 17.8 m/min) Feeding Wire|40 − 720 IPM (1.0 − 18.3 m/min) At No Load 20 − 700 IPM (0.5 − 17.8 m/min) Feeding Wire|40 − 720 IPM (1.0 − 18.3 m/min) At No Load 20 − 700 IPM (0.5 − 17.8 m/min) Feeding Wire|40 − 720 IPM (1.0 − 18.3 m/min) At No Load 20 − 700 IPM (0.5 − 17.8 m/min) Feeding Wire|40 − 720 IPM (1.0 − 18.3 m/min) At No Load 20 − 700 IPM (0.5 − 17.8 m/min) Feeding Wire|
######## 3-2. Duty Cycle And Overheating
140
Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.
| | | | | | | | | | | | | | | | | | | | | | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |R|te|Ou|put| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
120
If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before welding.
100
Output Amperes
80
Exceeding duty cycle can damage unit or gun and void warranty.
60
40
20
0
10 20 30 40 50 60 70 80 90 100
Duty Cycle %
20% duty cycle at 90 amps
2 Minutes Welding 8 Minutes Resting
200
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180
160
140
Output Amperes
120
100
80
60
40
20
0
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Duty Cycle %
30% duty cycle at 130 amps, 60 Hz 20% duty cycle at 130 amps, 50 Hz
3 Minutes Welding 7 Minutes Resting
Overheating
########## A or V
0
15
OR Reduce Duty Cycle Minutes
duty1 4/95 − 203 771 / 203 796
######## 3-3. Volt-Ampere Curves
|The volt-ampere curves show the minimum and maximum voltage and amperage output capabilities of the welding power source. Curves of other settings fall between the curves shown.
203 772 / 203 797
A. 115 VAC Model
B. 230 VAC Model
0
5
10
15
20
25
30
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100. 110. 120. 130.
AMPERAGE
VOLTAGE
|Voltage Control @ 10
Voltage Control @ 9
Voltage Control @ 8
Voltage Control @ 7
Voltage Control @ 6
Voltage Control @ 5
Voltage Control @ 4
Voltage Control @ 3
Voltage Control @ 2
Voltage Control @ 1
Voltage Control @ 0| |---|
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
0
5
10
15
20
25
30
35
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
AMPERAGE
VOLTAGE
|Voltage Control @ 10
Voltage Control @ 9
Voltage Control @ 8
Voltage Control @ 7
Voltage Control @ 6
Voltage Control @ 5
Voltage Control @ 4
Voltage Control @ 3
Voltage Control @ 2
Voltage Control @ 1
Voltage Control @ 0| |---| | |---|
##### SECTION 4 − INSTALLATION
######## 4-1. Installing Welding Gun
Loosen knob. Insert gun end through opening until it bottoms against drive assembly. Tighten knob.
| | | | | | | |---|---|---|---|---|---| | | | | | | | | | | | | | |
Insert into receptacle, and tighten threaded collar.
3
4
| | | |---|---| | | |
Close door.
| | | |---|---|
| | | |---|---| | | |
| | | | | |---|---|---|---| | | | | | | | | | |
1
2
Ref. 802 982-A / Ref. 801 987
######## 4-2. Installing Work Clamp
|1 Nut
2 Work Cable From Unit
3 Work Clamp
4 Screw
5 Work Clamp Tabs Bend tabs around work cable.
802 456
1
2
3
45
Tools Needed:
3/8, 7/16 in| |---|
######## 4-3. Work Cable Routing Inside Unit
2
Insert work cable through opening in front panel and route along back of front panel to output terminal block.
Close door.
1
| | | |---|---|
| | | |---|---| | | |
Ref. 802 982-A
######## 4-4. Process/Polarity Table
|Process|Polarity
|Cable Connections|Cable Connections| |---|---|---|---| |Process|Polarity
|Cable To Gun|Cable To Work| |GMAW − Solid wire with shielding gas|DCEP − Reverse polarity|Connect to positive (+) output terminal|Connect to negative (−) output terminal| |FCAW − Self-shielding wire − no shielding gas|DCEN − Straight Polarity|Connect to negative (−) output terminal|Connect to positive (+) output terminal|
######## 4-5. Changing Polarity
CHANGING POLARITY DCEP Electrode Positive FOR SOLID WIRE
DCEN Electrode Negative Flux Core Wire
Electrode POSITIVE
WorkClamp Le ad
WorkClamp Le ad
WorkClamp Le ad
WorkClamp Le ad
| | | |---|---|
| | | |---|---|
| | |---|
1
Wire Drive Le a
Wire Drive Le ad
Wire Drive Le a
Wire Drive Le ad
d
d
2
Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.
Close door.
Ref. 203 501
######## 4-6. Installing Gas Supply

| | | | |---|---|---| | | | |
DO NOT use Argon/Mixed gas regulator/flowmeter with CO2 shielding gas. See Parts List for optional CO2 gas regulator/flowmeter and hose.
7
| | |---| | | | |
| | | | | | | | |---|---|---|---|---|---|---| | | | | | | | |
| | | |---|---| | | | | | |
| | |---| | | | |
| | |---| | | | |
6
Obtain gas cylinder and chain to running gear, wall, or other stationary support so cylinder cannot fall and break off valve.
Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve.
Connect supplied gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source.
Typical flow rate is 20 cfh (cubic feet per hour). Check wire manufacturer’s recommended flow rate.
Tools Needed:
5/8, 1-1/8 in
Ref. 802 028 / 802 441
######## 4-7. Selecting A Location And Connecting Input Power For 115 VAC Model
1
18 in (460 mm)
2
3
A 115 volt, 20 ampere individual branch circuit protected by time-delay fuses or circuit breaker is required.
Select extension cord of 14 AWG for up to 50 ft (15 m) or 12 AWG for 50 up to 200 ft (61 m).
Special installation may be required where gasoline or volatile liquids are present − see NEC Article 511 or CEC Section 20.
18 in (460 mm)
Ref. 802 980
######## 4-8. Selecting A Location And Connecting Input Power For 230 VAC Model
4
18 in (457 mm) of space for airflow
Special installation may be required where gasoline or volatile liquids are present − see NEC Article 511 or CEC Section 20.
L1
| | |---| | |
L2
Always connect grounding conductor first.
= GND/PE
3
1
2
L1L2
| | | |---|---|
| | | |---|---|
| | | |---|---|
230 VAC, 1
################# Do not move or operate unit where it could tip.
ssb2.2* 1/94 − 802 980 / Ref. 802 443 / Ref. 802 085
######## 4-9. Electrical Service Guide For 230 VAC Model
|Input Voltage|230| |---|---| |Input Amperes At Rated Output|20| |Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes|20| |Min Input Conductor Size In AWG|14| |Max Recommended Input Conductor Length In Feet (Meters)|66 (20)| |Min Grounding Conductor Size In AWG|12| |Reference: 1996 National Electrical Code (NEC) S-0092-J|Reference: 1996 National Electrical Code (NEC) S-0092-J|
######## 4-10. Installing Wire Spool And Adjusting Hub Tension
Installing 4 in (102 mm) Wire Spool
Installing 8 in (203 mm) Wire Spool
Tools Needed:
Retaining ring used with 8 in (203 mm) spool only.
When a slight force is needed to turn spool, tension is set.
Adapter used with 8 in (203 mm) spool only.
When a slight force is needed to turn spool, tension is set.
1/2 in
803 012 / 803 013 -B / Ref. 802 444-C
######## 4-11. Threading Welding Wire

| | | | |---|---|---| | | | |
| | | | | | | |---|---|---|---|---|---| | | | | | | | | | | | | | |
4
| | | |---|---| | | |
| | | | | |---|---|---|---| | | | | | | | | | | | | | | |
| | | |---|---| | | |
Tools Needed:
1 3
2
5
Hold wire tightly to keep it from unraveling.
| | | |---|---| | | |
6
| | | |---|---| | | |
| | | |---|---|
| | | |---|---|
| | | | |
|---|---|---|---| | | | | |
| | | | | |---|---|---|---| | | | | |
4 in (102 mm)
6 in (150 mm)
Open pressure assembly. Push wire thru guides into gun; continue to hold wire.
Pull and hold wire; cut off end.
Use pressure indicator scale to set a desired drive roll pressure. Begin with a setting of 3. If necessary, make additional adjustments after trying this initial setting.
| | | | | | |---|---|---|---|---| |1
2
3
4
|1
2
3
4
|1
2
3
4
|1
2
3
4
|1
2
3
4
|
Tighten
Pressure Indicator Scale
| | | |---|---| | | |
| | | | |---|---|---| | | | | | | | |
| | | |---|---| | | |
INPUT POWER
Be sure that wire is positioned in proper feed roll groove. Close and tighten pressure assembly, and let go of wire.
Remove gun nozzle and contact tip.
Turn power on.
Tighten
|WOOD| |---|
Feed wire to check drive roll pressure. Tighten knob enough to prevent slipping. Cut off wire. Close door.
Press gun trigger until wire comes out of gun.
Be sure that tip matches wire diameter. Reinstall contact tip and nozzle.
Ref. 802 982-A / Ref. 205 837
##### SECTION 5 − OPERATION
######## 5-1. Controls
1
######## V
| | | |---|---| | | | | | | | | | | | | | | |
4
5
1 Wire Speed Control
Turn control clockwise to increase wire feed speed. (see weld parameter chart in welding power source or Sections 5-2 and
2 Voltage Control
Turn control clockwise to increase voltage (see weld parameter chart in welding power source or Sections 5-2 and 5-3, as applicable).
Ref. 203 498
#### Selecting Wire, Gas and Control Settings
Note: 1. Settings are approximate. Adjust as required.
################# What Material Are you Welding
Steel
Suggested Wire Types, Polarity
Solid Wire (or Hard) ER70S−6 (DCEP)
Solid Wire (or Hard) ER70S−6 (DCEP)
Suggested
Shielding
Gases (Flow Rate of 20−30 cfh)
C 25 Gas Mixture 75% Ar / 25% CO 2 (Ar / CO 2 produces less spatter better overall appearance)
−
100% CO 2
Wire Sizes (Diameters)
.024” (0.6 mm )
.030” (0.8 mm )
.024” (0.6 mm )
.030” (0.8 mm )
Flux Core E71T−11 (DCEN)
No Shielding Gas required. Good for windy or outdoor applications.
.030” (0.8 mm )
.035” (0.9 mm )
Stainless Steel
Stainless Steel (DCEP)
Tri−Mix 90% He / 7.5% Ar / 2.5% CO 2
.024” (0.6 mm )
.030” (0.8 mm )
Match feedroll groove to diameter of wire being used. Set Tension knob setting to 3 at start. Adjust tension per instructions in the manual.
M−10 (#195605) Torch Consumables:
Nozzles: #169715
Tip Adapter: #169716
Contact Tips:
Liners:
.024” (0.6 mm) #087299 .030” (0.8 mm) #000067 .035” (0.9 mm) #000068
.024” (0.6 mm) #194010 .030 − .035” (0.8 − 0.9 mm) #194011 .035 − .045” (0.9 − 1.2 mm) #194012
################# Quick Change Dual Grooved Drive Rolls:
Wire Diameters .024” (0.6 mm) .030” (0.8 mm) .035” (0.9 mm)
V−Knurled *
V−Smooth #202925 #202925 #202925
#202926 #202926
3/16” (4.8 mm)
−−−
−−−
−−−
−−−
10 / 60
10/45
−−−
−−−
1/8” (3.2 mm)
10 / 75
10 / 60
10 / 60
10 / 40
6/55
6/45
10 / 75
10 / 60
16 ga. (1.6 mm)
4.5 / 60
2.5 / 45
2.5 / 40
6/45
20 ga. (0.9 mm)
########## 3/45
########## 4/25
−−−
−−−
4/45
4/35
24 ga. (0.8 mm)
2/40
2/30
−−−
−−−
−−−
−−−
−−−
−−−
208 267
######## 5-3. Weld Parameter Chart For 230 VAC Model
#### Selecting Wire, Gas and Control Settings
Note: 1. Settings are approximate. Adjust as required.
################# What Material Are you Welding
Suggested Wire Types, Polarity
Suggested
Shielding
Gases (Flow Rate of 20−30 cfh)
Wire Sizes (Diameters)
Steel
Stainless Steel
Solid Wire (or Hard) ER70S−6 (DCEP)
Solid Wire (or Hard) ER70S−6 (DCEP)
Flux Core E71T−11 (DCEN)
Stainless Steel (DCEP)
C 25 Gas Mixture 75% Ar / 25% CO 2 (Ar / CO 2 produces less spatter − better overall appearance)
100% CO 2
No Shielding Gas required. Good for windy or outdoor applications.
Tri−Mix 90% He / 7.5% Ar / 2.5% CO 2
.024” (0.6 mm ) .030” (0.8 mm ) .035” (0.9 mm ) .024” (0.6 mm ) .030” (0.8 mm ) .035” (0.9 mm ) .030” (0.8 mm ) .035” (0.9 mm ) .045” (1.2 mm ) .024” (0.6 mm ) .030” (0.8 mm ) .035” (0.9 mm )
############### Match feedroll groove to diameter of wire being used. Set Tension knob setting to 3 at start. Adjust tension per instructions in the manual.
################# M−10 (#195605) Torch Consumables:
Nozzles: #169715
Tip Adapter: #169716
Contact Tips:
Liners:
.024” (0.6 mm) #087299 .030” (0.8 mm) #000067 .035” (0.9 mm) #000068 .045” (1.2 mm) #000069
.024” (0.6 mm) #194010 .030 − .035” (0.8 − 0.9 mm) #194011 .035 − .045” (0.9 − 1.2 mm) #194012 .035 − .045” (0.9 − 1.2 mm) #194012
Quick Change Dual Grooved Drive Rolls:
Wire Diameters .024” (0.6 mm) .030” (0.8 mm) .035” (0.9 mm) .045” (1.2 mm)
V−Knurled *
V−Smooth #202925 #202925 #202925
#202926 #202926 #202926
1/4” (6.4 mm)
10 / 100 10 / 75 10 / 70 −−− 10 / 55 10 / 45
6/75 5.5 / 65 7.5 / 40
−−−
−−−
−−−
3/16” (4.8 mm)
6 / 100
6/70 6/55
10 / 75 8.5 / 55 7.5 / 45
4/70 4/55 6/40
10 / 80 10 / 70 10 / 60
1/8” (3.2 mm)
4.5 / 85 4.5 / 60
6.5 / 70 6/50
3/65 3/50 3/35
6/70 6/65 6/55
16 ga. (1.6 mm)
3.5 / 70
3.5 / 35
1/50 1/40
−−−
4/50 4/45
3.5 / 35
20 ga. (0.9 mm)
2.5 / 50
3/25 3/25 3/20
−−−
−−−
−−−
−−−
########## 24 ga. (0.8 mm)
1.5 / 40 1.5 / 30 −−−
−−−
−−−
−−−
−−−
−−−
−−−
−−−
−−−
−−−
208 268
##### SECTION 6 − MAINTENANCE &TROUBLESHOOTING
|Disconnect power before maintaining.| |---| |3 Months| |Replace unreadable labels.
Repair or replace cracked weld cable.
Clean and tighten weld terminals.| |6 Months| |Blow out or vacuum inside. During heavy service, clean monthly.
Or|
802 441
1 Circuit Breaker CB1 CB1 protects unit from overload. If CB1 opens, unit shuts down. Reset breaker.
1
Drive motor protection circuit protects drive motor from overload. If drive motor becomes inoperative, release gun trigger and wait until protection circuit resets allowing drive motor to feed wire again.
The tip saver/short circuit protection extends contact tip life and protects internal components from damage. If contact tip is shorted to workpiece, the unit shuts down the welding output, but the fan continues to run. To resume operation, release gun trigger to reset unit. If the contact tip has stuck to the workpiece, release gun trigger, turn off unit, and remove contact tip from workpiece. Check contact tip and replace if damaged. Turn on unit to continue operation.
######## 6-4. Changing Drive Roll Or Wire Inlet Guide
1
2
3
.024 Groove.030/.035 Groove
Remove guide by pressing on barbed area or cutting off one end near housing and pulling it out of hole. Push new guide into hole from rear until it snaps in place.
The drive roll consists of two different sized grooves. The stamped markings on the end surface of the drive roll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread (see Section 4-11).
To secure drive roll, locate open slot and push drive roll completely over retaining pin, then rotate drive roll 1/4 turn to closed slot.
Stamped .024 Stamped .030/.035
######## 6-5. Replacing Gun Contact Tip
2
1
Tools Needed:
802 984
Turn Off power before replacing contact tip.
Cut off welding wire at contact tip. Remove nozzle.
Remove contact tip and install new contact tip. Reinstall nozzle.
Ref. 802 399-A
######## 6-6. Cleaning Or Replacing Gun Liner
Disconnect gun from unit.
8 mm
Head Tube
Remove nozzle, contact tip, adapter, gas diffuser, and wire outlet guide.
Tools Needed:
8 mm / 10 mm
10 mm
Remove liner.
Lay gun cable out straight before installing new liner.
Blow out gun casing.
To Reassemble Gun: Install and tighten new liner.
Cut liner off 3/4 in (20 mm) (3/8 in [9.5 mm] for aluminum) from head tube.
Install adapter, contact tip, and nozzle.
Ref. ST-802 399-A
######## 6-7. Replacing Switch And/Or Head Tube
1
Remove handle locking nut.
################# Turn Off welding power source /wire feeder and disconnect gun.
3
Slide handle.
2
Remove switch housing. Install new switch and connect leads (polarity is not important). Reassemble in reverse order. If replacing head tube, continue to end of figure.
4
Secure head tube in vice.
5
Loosen jam nut. Remove from vice and turn head tube out by hand.
6
Hand-tighten head tube into cable connector.
7
Place head tube in vice and tighten until nuts are tight.
| | | | |---|---|---| | | | |
| | | |
Tools Needed:
19 mm
8
Remove from vice. Reposition handle and install switch housing. Secure with handle locking nut.
Ref. ST-800 795-C
######## 6-8. Troubleshooting Table
| | | | | | | | |---|---|---|---|---|---|---|
|Trouble|Remedy| |---|---| |No weld output; wire does not feed; fan does not run.
|Secure power cord plug in receptacle (see Section 4-7).| |No weld output; wire does not feed; fan does not run.
|Replace building line fuse or reset circuit breaker if open.| |No weld output; wire does not feed; fan does not run.
|Place Power switch in On position (see Section 5-1).| |No weld output; wire does not feed; fan does not run.
|Reset welding power source circuit breaker if open.| |No weld output; wire does not feed; fan motor continues to run.
|Thermostat TP1 open (overheating). Allow fan to run with gun trigger switch off; thermostat closes when unit has cooled (see Section 3-2).| |No weld output; wire does not feed; fan motor continues to run.
|Secure gun trigger leads (see Section 4-1).| |No weld output; wire feeds.
|Connect work clamp to get good metal to metal contact.| |No weld output; wire feeds.
|Replace contact tip (see Section 6-5).| |No weld output; wire feeds.
|Check for proper polarity connections (see Section 4-5).| |No weld output; wire feeds.
|Check thumbscrew securing gun end to feed head adapter and tighten if necessary.| |Low weld output.
|Connect unit to proper input voltage or check for low line voltage.| |Low weld output.
|Place voltage switch in desired position (see Section 5-1).| |Electrode wire feeding stops during welding.
|Straighten gun cable and/or replace damaged parts.| |Electrode wire feeding stops during welding.
|Adjust drive roll pressure (see Section 4-11).| |Electrode wire feeding stops during welding.
|Change to proper drive roll groove (see Section 6-4).| |Electrode wire feeding stops during welding.
|Readjust hub tension (see Section 4-10).| |Electrode wire feeding stops during welding.
|Replace contact tip if blocked (see Section 6-5). Oversized tip may be required for some wires.| |Electrode wire feeding stops during welding.
|Clean or replace wire inlet guide or liner if dirty or plugged (see Section 6-4 or Section 6-6).| |Electrode wire feeding stops during welding.
|Replace drive roll or pressure bearing if worn or slipping (see Section 6-4).| |Electrode wire feeding stops during welding.
|Secure gun trigger leads or repair leads (see Section 4-1).| |Electrode wire feeding stops during welding.
|Check and clear any restrictions at drive assembly and liner (see Section 4-11 or Section 6-6).| |Electrode wire feeding stops during welding.
|Release gun trigger and allow gun and motor protection circuitry to reset.| |Electrode wire feeding stops during welding.
|Have nearest Factory Authorized Service Agent check drive motor.|
##### SECTION 7 − ELECTRICAL DIAGRAM
| | | |---|---| | | | | | |
| | | |---|---| | | | | | |
| | | |---|---| | | |
203 765
########## Figure 7-1. Circuit Diagram For 115 VAC Model
| | | |---|---| | | | | | |
| | | |---|---| | | | | | |
| | | |---|---| | | |
########## Figure 7-2. Circuit Diagram For 230 VAC Model
203 794
##### SECTION 8 − MIG WELDING (GMAW) GUIDELINES
|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.
Wire Feeder/ Power Source
Workpiece
Gun
Regulator/ Flowmeter
Gas HoseShielding Gas
Work Clamp
light mig 5/967 / Ref. 802 982-A
| |---|
######## 8-2. Typical MIG Process Control Settings
|NOTE|These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be sure they comply to| |---|---| |specifications.|specifications.|
|1/8 or .125 in
Material thickness determines weld parameters.
Convert Material
(.001 in = 1 ampere) .125 in = 125 A
Select Wire Size
|Wire Size|Amperage Range| |---|---| |.030 in .035 in
.023 in|40 − 145 A 50 − 180 A
30 − 90 A|
.035 in
Select Wire Speed
Select Voltage
|Wire Size|Recommendation|Wire Speed (Approx.)| |---|---|---| |.030 in .035 in
.023 in|2 in per ampere 1.6 in per ampere
3.5 in per ampere
|2 x 125 A = 250 ipm 1.6 x 125 A = 200 ipm
3.5 x 125 A = 437 ipm
|
|Set voltage midway between high/low voltage.
Low voltage: wire stubs into work High voltage: arc is unstable (spatter)| |---|
125 A based on 1/8 in
Thickness to
(Amperage)
material thickness
Amperage (A)
ipm = inch per minute
Ref. 802 980
Voltage controls height and width of weld bead.
Wire speed (amperage) controls weld penetration (wire speed = burn-off rate)
| |---|
######## 8-3. Holding And Positioning Welding Gun
|NOTE
|Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in (13 mm) past end of nozzle,| |---|---| |and tip of wire is positioned correctly on seam.|and tip of wire is positioned correctly on seam.|
|1 Hold Gun and Control Gun Trigger
2 Workpiece
3 Work Clamp
4 Electrode Extension (Stickout) 1/4 to 1/2 in (6 To 13 mm)
5 Cradle Gun and Rest Hand on Workpiece
2
3
5
4
90° 90°
0°-15°
45°
45°
GROOVE WELDS
FILLET WELDS
End View Of Work Angle Side View Of Gun Angle
End View Of Work Angle Side View Of Gun Angle
1
0°-15°
S-0421-A| |---|
######## 8-4. Conditions That Affect Weld Bead Shape
|NOTE|Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed (weld current),| |---|---| |and voltage.|and voltage.|
|Short Normal Long
Short Normal Long
10°
10°
GUN ANGLES AND WELD BEAD PROFILES
ELECTRODE EXTENSIONS (STICKOUT)
FILLET WELD ELECTRODE EXTENSIONS (STICKOUT)
Push
Perpendicular Drag
GUN TRAVEL SPEED
Slow Normal Fast
S-0634| |---|
######## 8-5. Gun 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 works better.|multiple stringer beads works better.|
|1 Stringer Bead − Steady Movement Along Seam
2 Weave Bead − Side To Side Movement Along Seam
3 Weave Patterns
Use weave patterns to cover a wide area in one pass of the electrode.
S-0054-A
3
1 2
| |---|
######## 8-6. Poor Weld Bead Characteristics
|1 Large Spatter Deposits
2 Rough, Uneven Bead
3 Slight Crater During Welding
4 Bad Overlap
5 Poor Penetration
5
423
1
S-0053-A| |---|
######## 8-7. Good Weld Bead Characteristics
|1 Fine Spatter
2 Uniform Bead
3 Moderate Crater During Welding
Weld a new bead or layer for each 1/8 in (3.2 mm) thickness in metals being welded.
4 No Overlap
5 Good Penetration into Base Metal
| | | |---|---|
S-0052-B
2 3
1
4
5| |---|
######## 8-8. Troubleshooting − Excessive Spatter
|| | |---| | |
Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead.
S-0636|| | |---| | |
Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead.
S-0636| |---|---| |Possible Causes|Corrective Actions| |Wire feed speed too high.|Select lower wire feed speed.| |Voltage too high.|Select lower voltage range.| |Electrode extension (stickout) too long.|Use shorter electrode extension (stickout).| |Workpiece dirty.|Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding.| |Insufficient shielding gas at welding arc.|Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.| |Dirty welding wire.
|Use clean, dry welding wire.| |Dirty welding wire.
|Eliminate pickup of oil or lubricant on welding wire from feeder or liner.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-9. Troubleshooting − Porosity
|Porosity − small cavities or holes resulting from gas pockets in weld metal.
S-0635|Porosity − small cavities or holes resulting from gas pockets in weld metal.
S-0635| |---|---| |Possible Causes|Corrective Actions| |Insufficient shielding gas at welding arc.
|Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.| |Insufficient shielding gas at welding arc.
|Remove spatter from gun nozzle.| |Insufficient shielding gas at welding arc.
|Check gas hoses for leaks.| |Insufficient shielding gas at welding arc.
|Place nozzle 1/4 to 1/2 in (6-13 mm) from workpiece.| |Insufficient shielding gas at welding arc.
|Hold gun near bead at end of weld until molten metal solidifies.| |Wrong gas.|Use welding grade shielding gas; change to different gas.| |Dirty welding wire.
|Use clean, dry welding wire.| |Dirty welding wire.
|Eliminate pick up of oil or lubricant on welding wire from feeder or liner.| |Workpiece dirty.
|Remove all grease, oil, moisture, rust, paint, coatings, and dirt from work surface before welding.| |Workpiece dirty.
|Use a more highly deoxidizing welding wire (contact supplier).| |Welding wire extends too far out of nozzle.|Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-10. Troubleshooting − Excessive Penetration
|Good Penetration
Excessive Penetration − weld metal melting through base metal and hanging underneath weld.
Excessive Penetration
S-0639|Good Penetration
Excessive Penetration − weld metal melting through base metal and hanging underneath weld.
Excessive Penetration
S-0639|
|---|---| |Possible Causes|Corrective Actions| |Excessive heat input.
|Select lower voltage range and reduce wire feed speed.| |Excessive heat input.
|Increase travel speed.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-11. Troubleshooting − Lack Of Penetration
|| | | | |---|---|---| | | | |
Lack Of Penetration − shallow fusion between weld metal and base metal.
Lack of Penetration Good Penetration
S-0638|| | | | |---|---|---| | | | |
Lack Of Penetration − shallow fusion between weld metal and base metal.
Lack of Penetration Good Penetration
S-0638| |---|---| |Possible Causes|Corrective Actions| |Improper joint preparation.|Material too thick. Joint preparation and design must provide access to bottom of groove while maintaining proper welding wire extension and arc characteristics.| |Improper weld technique.
|Maintain normal gun angle of 0 to 15 degrees to achieve maximum penetration.| |Improper weld technique.
|Keep arc on leading edge of weld puddle.| |Improper weld technique.
|Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.| |Insufficient heat input.
|Select higher wire feed speed and/or select higher voltage range.| |Insufficient heat input.
|Reduce travel speed.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-12. Troubleshooting − Incomplete Fusion
|Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead.
S-0637|Incomplete Fusion − failure of weld metal to fuse completely with base metal or a preceeding weld bead.
S-0637| |---|---| |Possible Causes|Corrective Actions| |Workpiece dirty.|Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding.| |Insufficient heat input.|Select higher voltage range and/or adjust wire feed speed.| |Improper welding technique.
|Place stringer bead in proper location(s) at joint during welding.| |Improper welding technique.
|Adjust work angle or widen groove to access bottom during welding.| |Improper welding technique.
|Momentarily hold arc on groove side walls when using weaving technique.| |Improper welding technique.
|Keep arc on leading edge of weld puddle.| |Improper welding technique.
|Use correct gun angle of 0 to 15 degrees.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-13. Troubleshooting − Burn-Through
|Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains.
S-0640|Burn-Through − weld metal melting completely through base metal resulting in holes where no metal remains.
S-0640| |---|---| |Possible Causes|Corrective Actions| |Excessive heat input.
|Select lower voltage range and reduce wire feed speed.| |Excessive heat input.
|Increase and/or maintain steady travel speed.| |Wrong polarity.|Configure polarity as shown in Section 4-5. Always read and follow wire manufacturer’s recommended polarity, and see Section 4-4.|
######## 8-14. Troubleshooting − Waviness Of Bead
|| | |---| | |
Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal.
S-0641|| | |---| | |
Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal.
S-0641| |---|---| |Possible Causes|Corrective Actions| |Welding wire extends too far out of nozzle.|Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.| |Unsteady hand.|Support hand on solid surface or use two hands.|
######## 8-15. 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.
S-0642|Distortion − contraction of weld metal during welding that forces base metal to move.
Base metal moves in the direction of the weld bead.
S-0642| |---|---| |Possible Causes|Corrective Actions| |Excessive heat input.
|Use restraint (clamp) to hold base metal in position.| |Excessive heat input.
|Make tack welds along joint before starting welding operation.| |Excessive heat input.
|Select lower voltage range and/or reduce wire feed speed.| |Excessive heat input.
|Increase travel speed.| |Excessive heat input.
|Weld in small segments and allow cooling between welds.|
######## 8-16. Common MIG Shielding Gases
This is a general chart for common gases and where they are used. Many different combinations (mixtures) of shielding gases have been developed over the years. The most commonly used shielding gases are listed in the following table.
|Gas|Application|Application|Application|Application| |---|---|---|---|---| |Gas|Spray Arc Steel|Short Circuiting Steel|Short Circuiting Stainless Steel|Short Circuiting Aluminum| |Argon| | | |All Positions| |Argon + 25% CO2|Flat & Horizontal1 Fillet|All Positions|All Positions2| | |CO2|Flat & Horizontal1 Fillet|All Positions| | | |Tri-Mix3| | |All Positions| |
##### SECTION 9 − PARTS LIST
3
4
7
32
16 17
18
| | | |---|---| | | |
| | | |---|---| | | |
14 15
20
19
24
| | | |---|---| | | | | | |
| | | |---|---|
9
10
1
12
13
4041
2
| | | |---|---| | | |
11
3435 3637
8
42
21
22
23
| | | |---|---| | | |
| | | |---|---| | | |
30
2526 27
30
5
6
31
33
########## Figure 9-1. Main Assembly
Hardware is common and not available unless listed.
803 614-A
########## Figure 9-1. Main Assembly
########## +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.
########## Figure 9-1. Main Assembly (Continued)
♦212 492 REGULATOR/FLOWMETER, 10-50 CFH CO2 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ♦144 108 HOSE, gas 5ft 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
♦OPTIONAL
+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.
########## Figure 9-2. Wire Feed Drive Assembly
203 565
Item No.
Dia. Mkgs.
Part No.
Description
Quantity
Figure 9-2. Wire Feed Drive Assembly
########## +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.
1
2 34
5
10
11
12
8
9
########## Figure 9-3. M-10 Gun
802 388-A
Item No.
Part No.
QuantityDescription
########## Figure 9-3. M-10 Gun
♦OPTIONAL 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.
######## 9-4. Optional Drive Rolls
|For All Feed Head Assemblies|For All Feed Head Assemblies| |---|---| |PART NO.|WIRE DIAMETER INCHES (mm)| |202 925|.024 (.6) and .030/.035 (.8 and .9)| |202 926|.030/.035 (.8 and .9) and .045 (1.2 VK Groove)|
######## 9-5. Options
|PART NO.|DESCRIPTION|REMARKS| |---|---|---| |770 187|Running Gear/Cylinder Rack|For One Small Gas Cylinder, 100 lb (45 kg)| |194 776|Small Running Gear/Cylinder Rack|For One Small Gas Cylinder, 75 lb (34 kg)| |195 605|M-10 Replacement Gun|10 ft length/.030-.035 wire size|
NOTE: If individual parts are required, see Parts List for part number to order.
Notes
|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.| |---|
Effective January 1, 2003 (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.
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.
Miller’s True Blue Limited Warranty shall not apply to:
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 8/03
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 Replacement Parts Training (Schools, Videos, Books) Technical Manuals (Servicing Information and Parts) Circuit Diagrams Welding Process Handbooks
Contact the Delivering Carrier to:
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 2004 Miller Electric Mfg. Co. 1/03
|Miller Electric Mfg. Co. 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

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