For Warranty Claims And Technical Support, Contact:
Milweld Inc., National Distributor
P.O. Box 338, Hortonville, WI 54944-0338
Tel 920-779-0916 Fax 920-779-0924
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
Y Warning: Protect yourself and others from injury — read and follow these precautions.
1-1.Symbol Usage
Means Warning! Watch Out! There are possible hazards
with this procedure! The possible hazards are shown in
the adjoining symbols.
som _3/05
Y Marks a special safety message.
. Means “Note”; not safety related.
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 1-5. Read and follow all
Safety Standards.
Y Only qualified persons should install, operate, maintain, and
repair this unit.
Y 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
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 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 Additional safety precautions are required when any of the follow-
ing electrically hazardous conditions are present: in damp
locations or while wearing wet clothing; on metal structures such
as floors, gratings, or scaffolds; when in cramped positions such
as sitting, kneeling, or lying; or when there is a high risk of unavoidable or accidental contact with the workpiece or ground. For these
conditions, use the following equipment in order presented: 1) a
semiautomatic DC constant voltage (wire) welder, 2) a DC manual
(stick) welder, or 3) an AC welder with reduced open-circuit voltage. In most situations, use of a DC, constant voltage wire welder
is recommended. And, do not work alone!
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 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 conduc-
tor first − double-check connections.
D Frequently inspect input power cord for damage or bare wiring −
replace cord immediately if damaged − bare wiring can kill.
power circuit and machine internal circuits are also
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.
D Turn off all equipment when not in use.
D Do not use worn, damaged, undersized, or poorly spliced cables.
D Do not drape cables over your body.
D If earth grounding of the workpiece is required, ground it directly
with a separate cable.
D Do not touch electrode if you are in contact with the work, ground,
or another electrode from a different machine.
D Do not touch electrode holders connected to two welding ma-
chines at the same time since double open-circuit voltage will be
present.
D Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
D Wear a safety harness if working above floor level.
D Keep all panels and covers securely in place.
D Clamp work cable with good metal-to-metal contact to workpiece
or worktable as near the weld as practical.
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 in inverter-type
welding power sources after removal of input
power.
D Turn Off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
FUMES AND GASES can be hazardous.
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to your
health.
D Keep your head out of the fumes. Do not breathe the fumes.
D If inside, ventilate the area and/or use local forced ventilation at the
arc to remove welding fumes and gases.
D If ventilation is poor, wear an approved air-supplied respirator.
D Read and understand 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 in locations near degreasing, cleaning, or spraying op-
erations. The heat and rays of the arc can react with vapors to form
highly toxic and irritating gases.
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 while wearing an air-supplied
respirator. The coatings and any metals containing these elements
can give off toxic fumes if welded.
OM-219 316 Page 1
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ARC RAYS can burn eyes and skin.
BUILDUP OF GAS can injure or kill.
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 an approved welding helmet fitted with a proper shade of fil-
ter lenses 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,
glare and sparks; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant mate-
rial (leather, heavy cotton, or wool) and foot protection.
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
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 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 Do not weld where flying sparks can strike flammable material.
D Protect yourself and others from flying sparks and hot metal.
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, sparks, 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.
D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
workpiece, and hot equipment can cause fires and
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.
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.
D To handle hot parts, use proper tools and/or
wear heavy, insulated welding gloves and
clothing to prevent burns.
MAGNETIC FIELDS can affect pacemakers.
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, mechani-
cal shocks, physical damage, 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 fit-
tings 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 Use the right equipment, correct procedures, and sufficient num-
ber of persons to lift and move cylinders.
D Read and follow instructions on compressed gas cylinders,
associated equipment, and Compressed Gas Association (CGA)
publication P-1 listed in Safety Standards.
OM-219 316 Page 2
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1-3.Additional Symbols For Installation, Operation, And Maintenance
FIRE OR EXPLOSION hazard.
D Do not install or place unit on, over, or near
combustible surfaces.
D Do not install unit near flammables.
D Do not overload building wiring − be sure power supply system is
properly sized, rated, and protected to handle this unit.
FALLING UNIT can cause injury.
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.
OVERUSE can cause OVERHEATING
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.
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.
MOVING PARTS can cause injury.
D Keep away from moving parts such as fans.
D Keep all doors, panels, covers, and guards
closed and securely in place.
D Have only qualified persons remove doors,
panels, covers, or guards for maintenance as
necessary.
D Reinstall doors, panels, covers, or guards
when maintenance is finished and before reconnecting input power.
READ INSTRUCTIONS.
D Read Owner’s Manual before using or servic-
ing unit.
D Use only genuine Miller/Hobart replacement
parts.
H.F. RADIATION can cause interference.
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.
D The user is responsible for having a qualified electrician prompt-
ly correct any interference problem resulting from the installation.
D If notified by the FCC about interference, stop using the
equipment at once.
D Have the installation regularly checked and maintained.
D 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.
MOVING PARTS can cause injury.
D Keep away from moving parts.
D Keep away from pinch points such as drive
rolls.
WELDING WIRE can cause injury.
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.
1-4.California Proposition 65 Warnings
Y 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.)
Y 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.
ARC WELDING can cause interference.
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.
D To reduce possible interference, keep weld cables as short as
possible, close together, and down low, such as on the floor.
D Locate welding operation 100 meters from any sensitive elec-
tronic equipment.
D Be sure this welding machine is installed and grounded
according to this manual.
D 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.
For Gasoline Engines:
Y Engine exhaust contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive
harm.
For Diesel Engines:
Y Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects, and
other reproductive harm.
OM-219 316 Page 3
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1-5.Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,
from Global Engineering Documents (phone: 1-877-413-5184, website:
www.global.ihs.com).
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping, American Welding Society Standard
AWS F4.1 from Global Engineering Documents (phone:
1-877-413-5184, website: www.global.ihs.com).
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).
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
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:
Boulevard, Rexdale, Ontario, Canada M9W 1R3 (phone:
800−463−6727 or in Toronto 416−747−4044, website: www.csa−in-
ternational.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).
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. 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 before welding or going near
welding operations. If cleared by your doctor, then following the above
procedures is recommended.
OM-219 316 Page 4
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SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION
fre_som _3/05
Y Avertissement : se protéger et protéger les autres contre le risque de blessure — lire et respecter ces consignes.
2-1.Symboles utilisés
Symbole graphique d’avertissement ! Attention ! Cette procédure comporte des risques possibles ! Les dangers éventuels sont représentés par les symboles graphiques joints.
Y Indique un message de sécurité particulier
. Signifie NOTE ; n’est pas relatif à la sécurité.
2-2.Dangers relatifs au soudage à l’arc
Y Les symboles représentés ci-dessous sont utilisés dans ce manuel
pour attirer l’attention et identifier les dangers possibles. En
présence de l’un de ces symboles, prendre garde et suivre les
instructions afférentes pour éviter tout risque. Les instructions en
matière de sécurité indiquées ci-dessous ne constituent qu’un
sommaire des instructions de sécurité plus complètes fournies
dans les normes de sécurité énumérées dans la Section 2-5. Lire et
observer toutes les normes de sécurité.
Y Seul un personnel qualifié est autorisé à installer, faire fonction-
ner, entretenir et réparer cet appareil.
Y Pendant le fonctionnement, maintenir à distance toutes les per-
sonnes, notamment les enfants de l’appareil.
UNE DÉCHARGE ÉLECTRIQUE peut
entraîner la mort.
Le contact d’organes électriques sous tension peut
provoquer des accidents mortels ou des brûlures
graves. Le circuit de l’électrode et de la pièce est
sortie. Le circuit d’alimentation et les circuits internes de la machine
sont également sous tension lorsque l’alimentation est sur Marche.
Dans le mode de soudage avec du fil, le fil, le dérouleur, le bloc de
commande du rouleau et toutes les parties métalliques en contact
avec le fil sont sous tension électrique. Un équipement installé ou mis
à la terre de manière incorrecte ou impropre constitue un danger.
D Ne pas toucher aux pièces électriques sous tension.
D Porter des gants isolants et des vêtements de protection secs et sans
trous.
D S’isoler de la pièce à couper et du sol en utilisant des housses ou des
tapis assez grands afin d’éviter tout contact physique avec la pièce à
couper ou le sol.
D Ne pas se servir de source électrique à courant électrique dans les zo-
nes humides, dans les endroits confinés ou là où on risque de tomber.
D Se servir d’une source électrique à courant électrique UNIQUEMENT si
le procédé de soudage le demande.
D Si l’utilisation d’une source électrique à courant électrique s’avère né-
cessaire, se servir de la fonction de télécommande si l’appareil en est
équipé.
D D’autres consignes de sécurité sont nécessaires dans les conditions
suivantes : risques électriques dans un environnement humide ou si l’on
porte des vêtements mouillés ; sur des structures métalliques telles que
sols, grilles ou échafaudages ; en position coincée comme assise, à genoux ou couchée ; ou s’il y a un risque élevé de contact inévitable ou
accidentel avec la pièce à souder ou le sol. Dans ces conditions, utiliser
les équipements suivants, dans l’ordre indiqué : 1) un poste à souder DC
à tension constante (à fil), 2) un poste à souder DC manuel (électrode)
ou 3) un poste à souder AC à tension à vide réduite. Dans la plupart des
situations, l’utilisation d’un poste à souder DC à fil à tension constante
est recommandée. En outre, ne pas travailler seul !
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 le poste correctement et le mettre à la terre convenablement
selon les consignes du manuel de l’opérateur et les normes nationales,
provinciales et locales.
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.
sous tension lorsque le courant est délivré à la
Ce groupe de symboles signifie Avertissement ! Attention ! Risques
d’ÉLECTROCUTION, ORGANES MOBILES et PARTIES
CHAUDES. Consulter les symboles et les instructions afférentes
ci-dessous concernant les mesures à prendre pour supprimer
les dangers.
D Vérifier fréquemment le cordon d’alimentation afin de s’assurer qu’il
n’est pas altéré ou à nu, le remplacer immédiatement s’il l’est. Un fil à nu
peut entraîner la mort.
D L’équipement doit être hors tension lorsqu’il n’est pas utilisé.
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.
D Ne pas toucher des porte électrodes connectés à deux machines en
même temps à cause de la présence d’une tension à vide doublée.
D N’utiliser qu’un matériel en bon état. Réparer ou remplacer sur-le-
champ les pièces endommagées. Entretenir l’appareil conformément à
ce manuel.
D Porter un harnais de sécurité si l’on doit travailler au-dessus du sol.
D S’assurer que tous les panneaux et couvercles sont correctement en
place.
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.
D Ne pas raccorder plus d’une électrode ou plus d’un câble de masse à
une même borne de sortie de soudage.
Il reste une TENSION DC NON NÉGLIGEABLE dans
les sources de soudage onduleur quand on a coupé
l’alimentation.
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.
LES FUMÉES ET LES GAZ peuvent
être dangereux.
Le soudage génère des fumées et des gaz. Leur
inhalation peut être dangereuse pour la santé.
D Ne pas mettre sa tête au-dessus des vapeurs. Ne pas respirer ces va-
peurs.
D À l’intérieur, ventiler la zone et/ou utiliser une ventilation forcée au niveau de
l’arc pour l’évacuation des fumées et des gaz de soudage.
D Si la ventilation est médiocre, porter un respirateur anti-vapeurs approu-
vé.
D Lire et comprendre les spécifications de sécurité des matériaux (MSDS) et
les instructions du fabricant concernant les métaux, les consommables, les
revêtements, les nettoyants et les dégraisseurs.
D 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.
D Ne pas souder dans des endroits situés à proximité d’opérations de dé-
graissage, 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.
D Ne pas souder des métaux munis d’un revêtement, tels que l’acier gal-
vanisé, 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 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-219 316 Page 5
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LES RAYONS D’ARC peuvent entraîner des brûlures aux yeux et à la peau.
Le rayonnement de l’arc du procédé de soudage
génère des rayons visibles et invisibles intenses
(ultraviolets et infrarouges) susceptibles de provo-
Des étincelles sont projetées pendant le soudage.
D Porter un casque de soudage approuvé muni de verres filtrants ap-
proprié pour protéger visage et yeux pendant le soudage (voir ANSI
Z49.1 et Z87.1 énuméré dans les normes de sécurité).
D Porter des lunettes de sécurité avec écrans latéraux même sous vo-
tre casque.
D Avoir recours à des écrans protecteurs ou à des rideaux pour
protéger les autres contre les rayonnements les éblouissements et
les étincelles ; prévenir toute personne sur les lieux de ne pas
regarder l’arc.
D Porter des vêtements confectionnés avec des matières résistantes
et ignifuges (cuir, coton lourd ou laine) et des bottes de protection.
quer des brûlures dans les yeux et sur la peau.
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
d’étincelles, des pièces chaudes et des équipements chauds peuvent
provoquer des incendies et des brûlures. Le contact accidentel de
l’électrode avec des objets métalliques peut provoquer des étincelles,
une explosion, une surchauffe ou un incendie. Avant de commencer
le soudage, vérifier et s’assurer que l’endroit ne présente pas de
danger.
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 homologuées.
D Ne pas souder dans un endroit où des étincelles peuvent tomber sur
des substances inflammables.
D Se protéger, ainsi que toute autre personne travaillant sur les lieux,
contre les étincelles et le métal chaud.
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 Afin d’éliminer tout risque de feu, être vigilant et garder toujours un
extincteur à la portée de main.
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 de masse 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, d’étincelles 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 porte-
électrode ou couper le fil à la pointe de contact.
D Porter des vêtements de protection exempts d’huile tels que des
gants en cuir, une veste résistante, des pantalons sans revers, des
bottes et un casque.
D Avant de souder, retirer toute substance combustible de ses poches
telles qu’un allumeur au butane ou des allumettes.
D Suivre les consignes de OSHA 1910.252 (a) (2) (iv) et de NFPA 51B
pour travaux de soudage et prévoir un détecteur d’incendie et un extincteur à proximité.
être projetées de l’arc de soudure. La projection
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
D Porter des lunettes de sécurité avec écrans latéraux ou un écran
facial.
de projeter du laitier.
LES ACCUMULATIONS DE GAZ
risquent de provoquer des blessures
ou même la mort.
D Fermer l’alimentation du gaz protecteur en cas
de non-utilisation.
D Veiller toujours à bien aérer les espaces confi-
nés 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 Ne pas toucher aux pièces chaudes, utiliser les outils recom-
mandés et porter des gants de soudage et des vêtements épais
pour éviter les brûlures.
d’utiliser le pistolet ou la torche.
LES CHAMPS MAGNÉTIQUES peuvent
affecter les stimulateurs cardiaques.
D Porteurs de stimulateur cardiaque, rester
à distance.
D Les porteurs d’un stimulateur cardiaque doi-
vent 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 endommager l’ouïe.
Le bruit des processus et des équipements peut
affecter l’ouïe.
D Porter des protections approuvées pour les
oreilles si le niveau sonore est trop élevé.
LES BOUTEILLES peuvent exploser
si elles sont endommagées.
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 excessi-
ve, des chocs mécaniques, des dommages physiques, du laitier, des flammes ouvertes, des étincelles et des arcs.
D Placer les bouteilles debout en les fixant dans un support sta-
tionnaire 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 Détourner votre visage du détendeur-régulateur lorsque vous
ouvrez la soupape de la bouteille.
D Le couvercle du détendeur doit toujours être en place, sauf lors-
que la bouteille est utilisée ou qu’elle est reliée pour usage ultérieur.
D Utiliser les équipements corrects, les bonnes procédures et suf-
fisamment de personnes pour soulever et déplacer les bouteilles.
D Lire et suivre les instructions sur les bouteilles de gaz comprimé,
l’équipement connexe et le dépliant P-1 de la CGA (Compressed
Gas Association) mentionné dans les principales normes de sécurité.
OM-219 316 Page 6
Page 11
2-3.Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance
Risque D’INCENDIE OU D’EXPLOSION.
D Ne pas placer l’appareil sur, au-dessus ou
à proximité de surfaces inflammables.
D Ne pas installer l’appareil à proximité de
D Ne pas surcharger l’installation électrique − s’assurer que
l’alimentation est correctement dimensionnée et protégée avant
de mettre l’appareil en service.
produits inflammables.
LA CHUTE DE L’APPAREIL peut
blesser.
D Utiliser l’anneau de levage uniquement pour
soulever l’appareil, NON PAS les chariots, les
bouteilles de gaz ou tout autre accessoire.
D Utiliser un équipement de levage de capacité
D En utilisant des fourches de levage pour déplacer l’unité, s’assu-
rer que les fourches sont suffisamment longues pour dépasser
du côté opposé de l’appareil.
suffisante pour lever l’appareil.
L’EMPLOI EXCESSIF peut SURCHAUFFER L’ÉQUIPEMENT.
D Prévoir une période de refroidissement ;
respecter le cycle opératoire nominal.
D Réduire le courant ou le facteur de marche
avant de poursuivre le soudage.
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 antistati-
ques pour stocker, déplacer ou expédier des
cartes PC.
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 gâchette 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.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D S’abstenir de toucher des organes mobiles tels
que des ventilateurs.
D Maintenir fermés et verrouillés les portes,
panneaux, recouvrements et dispositifs de
D Seules des personnes qualifiées sont autorisées à enlever les
portes, panneaux, recouvrements ou dispositifs de protection
pour l’entretien.
D Remettre les portes, panneaux, recouvrements ou dispositifs de
protection quand l’entretien est terminé et avant de rebrancher
l’alimentation électrique.
protection.
LIRE LES INSTRUCTIONS.
D Lire le manuel d’utilisation avant d’utiliser ou
d’intervenir sur l’appareil.
D Utiliser uniquement des pièces de rechange
Miller/Hobart.
LE RAYONNEMENT HAUTE
FRÉQUENCE (HF) risque de provoquer
des interférences.
D Le rayonnement haute fréquence (HF) peut
provoquer des interférences avec les équipements de radio-navigation et de communica-
D Demander seulement à des personnes qualifiées familiarisées
avec des équipements électroniques de faire fonctionner l’installation.
D L’utilisateur est tenu de faire corriger rapidement par un électri-
cien qualifié les interférences résultant de l’installation.
D Si le FCC signale des interférences, arrêter immédiatement
l’appareil.
D Effectuer régulièrement le contrôle et l’entretien de l’installation.
D 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 un blindage pour réduire
les interférences éventuelles.
tion, les services de sécurité et les ordinateurs.
LE SOUDAGE À L’ARC risque de
provoquer des interférences.
D L’énergie électromagnétique peut gêner le
fonctionnement d’appareils électroniques
comme des ordinateurs et des robots.
D Veiller à ce que tout l’équipement de la zone de
D 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).
D Veiller à souder à une distance de 100 mètres de tout équipe-
ment électronique sensible.
D Veiller à ce que ce poste de soudage soit posé et mis à la terre
conformément à ce mode d’emploi.
D En cas d’interférences après avoir pris les mesures précéden-
tes, 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.
soudage soit compatible électromagnétiquement.
2-4.Proposition californienne 65 Avertissements
Y Les équipements de soudage et de coupage produisent des
fumées et des gaz qui contiennent des produits chimiques dont
l’État de Californie reconnaît qu’ils provoquent des malformations
congénitales et, dans certains cas, des cancers. (Code de santé et
de sécurité de Californie, chapitre 25249.5 et suivants)
Y Les batteries, les bornes et autres accessoires contiennent du
plomb et des composés à base de plomb, produits chimiques
dont l’État de Californie reconnaît qu’ils provoquent des cancers et des malformations congénitales ou autres problèmes de
procréation. Se laver les mains après manipulation.
Pour les moteurs à essence :
Y Les gaz d’échappement des moteurs contiennent des produits
chimiques dont l’État de Californie reconnaît qu’ils provoquent
des cancers et des malformations congénitales ou autres problèmes de procréation.
Pour les moteurs diesel :
Y Les gaz d’échappement des moteurs diesel et certains de leurs
composants sont reconnus par l’État de Californie comme
provoquant des cancers et des malformations congénitales ou autres problèmes de procréation.
OM-219 316 Page 7
Page 12
2-5.Principales normes de sécurité
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,
de Global Engineering Documents (téléphone : 1-877-413-5184, site Internet : www.global.ihs.com).
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping, American Welding Society Standard AWS
F4.1 de Global Engineering Documents (téléphone : 1-877-413-5184, site
Internet : www.global.ihs.com).
National Electrical Code, NFPA Standard 70, de National Fire Protection
Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA
02269-9101 (téléphone : 617-770-3000, site Internet : www.nfpa.org).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
de Compressed Gas Association, 1735 Jefferson Davis Highway, Suite
1004, Arlington, VA 22202-4102 (téléphone : 703-412-0900, site Internet
: www.cganet.com).
Code for Safety in Welding and Cutting, CSA Standard W117.2, de
Canadian Standards Association, Standards Sales, 178 Rexdale
2-6.Information EMF
Considérations sur le soudage et les effets de basse fréquence et des
champs magnétiques et électriques.
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.
Pour réduire les champs magnétiques sur le poste de travail, appliquer
les procédures suivantes :
Boulevard, Rexdale, Ontario, Canada M9W 1R3 (téléphone :
800-463-6727 ou à Toronto 416-747-4044, site Internet :
www.csa-international.org).
Practice For Occupational And Educational Eye And Face Protection,
ANSI Standard Z87.1, de American National Standards Institute, 11 West
42nd Street, New York, NY 10036-8002 (téléphone : 212-642-4900, site
Internet : www.ansi.org).
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, NFPA Standard 51B, de National Fire Protection Association, P.O.
Box 9101, 1 Battery March Park, Quincy, MA 02269-9101 (téléphone :
617-770-3000, site Internet : www.nfpa.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 U.S. Government Printing Office, Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (il y a 10
bureaux régionaux−−le téléphone de la région 5, Chicago, est
312-353-2220, site Internet : www.osha.gov).
1. Maintenir les câbles ensemble en les tordant ou en les enveloppant.
2. Disposer les câbles d’un côté et à distance de l’opérateur.
3. Ne pas courber pas et ne pas entourer pas les câbles autour de
votre corps.
4. Garder le poste de soudage et les câbles le plus loin possible de
vous.
5. Connecter la pince sur la pièce aussi près que possible de la soudure.
En ce qui concerne les stimulateurs cardiaques
Les porteurs de stimulateur cardiaque doivent consulter leur médecin
avant de souder ou d’approcher des opérations de soudage. Si le médecin approuve, il est recommandé de suivre les procédures précédentes.
OM-219 316 Page 8
Page 13
SECTION 3 − DEFINITIONS
Wire Type
3-1.Symbols And Definitions
A
Amperage
Positive
OutputVoltage InputOffOn
Do Not Switch
While Welding
4-1.Specifications
Rated Welding
Output
90 A @ 19 Volts DC,
20% Duty Cycle
63 A @ 21 Volts DC,
20% Duty Cycle*
Wire Type
And Diameter
* CSA Rating
Amperage
25 − 140
Stainless
.023 − .035 in
(0.6 − 0.9 mm)
V
Voltage
Direct Current
(DC)
Gas Metal Arc
Welding (GMAW)
Hz
HertzNegative
Single PhaseInput
Wire Feed
SECTION 4 − SPECIFICATIONS
Amperes Input at
Rated Load Output
115 V, 60 Hz, Single-
Phase
20
15*
.030 in
(0.8 mm)
KVAKW
2.90
2.20*
50 − 740 IPM (1.3 − 18.8 m/min) At No Load
40 − 700 IPM (1.0 − 17.8 m/min) Feeding Wire
Range
Solid/
Maximum Open-
Circuit Voltage
DC
28
Flux CoredAluminum
.030 − .035 in
(0.8 − 0.9 mm)
Weight
W/ Gun
Length: 19-1/2 in
2.50
1.77*
Wire Feed Speed Range
57 lb
(26 kg)
Height: 12-3/8 in
Overall
Dimensions
(495 mm)
Width: 10-5/8 in
(270 mm)
(314 mm)
OM-219 316 Page 9
Page 14
4-2.Duty Cycle And Overheating
200
140
100
80
60
40
Output Amperes
20
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
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.
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.
RANGE 4
ssb1.1 10/91 − 217 624-A
OM-219 316 Page 11
Page 16
SECTION 5 − INSTALLATION
5-1.Installing Welding Gun
. Be sure that gun end is tight against drive assembly.
4
3
12
1Drive Assembly
2Gun Securing Thumbscrew
3Gun End
Loosen thumbscrew. Insert end
through opening until it bottoms
against drive assembly. Tighten
thumbscrew.
Welding gun must be inserted
completely to prevent leakage of
shielding gas.
4Gun Trigger Leads
Insert leads, one at a time, through
gun opening on front panel.
Connect female friction terminals to
matching male terminals in unit.
Polarity is not important.
Close door.
Exposed O-rings
will cause shielding
gas leakage.
Gun Not Seated
5-2.Installing Work Clamp
. Connection hardware must be tightened with proper tools. Do not just
hand tighten hardware. A loose electrical connection will cause poor
weld performance and excessive heating of the work clamp.
6
3
3
CorrectIncorrect
Gun Fully Seated
803 711-A
1Nut
2Work Cable From Unit
3Work Clamp
4Screw
5Work Clamp Tabs
Bend tabs around work cable.
6Insulating Sleeves
Slide one insulating sleeve over
1
2
3
work cable before connecting to
clamp.
Slide insulating sleeves over
handles.
Tools Needed:
OM-219 316 Page 12
7/16 in
7/16 in
5
4
802 456-A
Page 17
5-3.Process/Polarity Table
P
Polari
rocess
GMAW − Solid wire with shielding gas
FCAW − Self-shielding wire −
no shielding gas
5-4.Changing Polarity
ty
Cable To GunCable To Work
Cable Connections
DCEP − Reverse polarityConnect to positive (+) out-
put terminal
DCEN − Straight PolarityConnect to negative (−)
output terminal
CHANGING
POLARITY
DCEN
Electrode negative for
flux cored wire
1
Connect to negative (−) output
terminal
Connect to positive (+) output
terminal
1Lead Connections For Direct
Current Electrode Negative
(DCEN)
2Lead Connections For Direct
Current Electrode Positive
(DCEP)
Always read and follow wire
manufacturer’s recommended
polarity, and see Section 5-3.
Close door.
DCEP
Electrode positive for
solid wire
2
Ref. 209 228 / Ref. 209 229
OM-219 316 Page 13
Page 18
5-5.Installing Gas Supply
. DO NOT use Argon/Mixed gas regulator/flowmeter
with CO2 shielding gas. See Parts List for optional
CO2 gas regulator/flowmeter.
4
7
5
Argon Gas Or
Mixed Gas
Obtain gas cylinder and chain to
running gear, wall, or other
stationary support so cylinder
cannot fall and break off valve.
1
2
3
1Cap
2Cylinder Valve
Remove cap, stand to side of valve,
and open valve slightly. Gas flow
blows dust and dirt from valve.
Close valve.
3Cylinder
4Regulator/Flowmeter
Install so face is vertical.
5Regulator/Flowmeter Gas
Hose Connection
6Welding Power Source Gas
Hose Connection
Connect supplied gas hose
between regulator/flowmeter gas
hose connection, and fitting on rear
of welding power source.
7Flow Adjust
Turn flow adjust screw to increase
or decrease gas flow. Flow rate
should be set when gas is flowing
through welding power source and
welding gun. Turn Range switch to
Purge or Fan Only position. Press
gun trigger to start gas flow. Typical
flow rate is 20 cfh (cubic feet per
hour). Check wire manufacturer’s
recommended flow rate.
6
Feedhead Pressure
Assembly Open
Feedhead Pressure
Assembly Closed
Tools Needed:
OM-219 316 Page 14
5/8, 1-1/8 in
Ref. 802 028-A / 802 441 / Ref. 804 623-A
Page 19
5-6.Selecting A Location And Connecting Input Power
Y Do not move or operate unit
where it could tip.
2
1
18 in
(460 mm)
1Rating Label
2Grounded Receptacle
A 115 volt, 20 ampere individual
branch circuit protected by
time-delay fuses or circuit breaker
is required.
3Plug From Unit
Select extension cord of 14 AWG
for up to 50 ft (15 m) or 12 AWG for
50 up to 200 ft (61 m).
Y Special installation may be
required where gasoline or
volatile liquids are present −
see NEC Article 511 or CEC
Section 20.
3
18 in
(460 mm)
803 712-C
OM-219 316 Page 15
Page 20
5-7.Installing Wire Spool And Adjusting Hub Tension
Installing 4 in (102 mm) Wire Spool
When a slight force is needed
to turn spool, tension is set.
Installing 8 in (203 mm) Wire Spool
Retaining ring used
with 8 in (203 mm)
spool only.
Tools Needed:
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. 802 971-C
OM-219 316 Page 16
Page 21
5-8.Installing Contact Tip And Nozzle
3
2
1
Y Turn off welding power source.
1Nozzle
Remove nozzle.
2Contact Tip
3Tip Adapter
Thread welding wire through gun (see
Section 5-9).
Slide contact tip over wire and tighten
tip into tip adapter.
Install nozzle.
Use with flux cored wire only.
Flux NozzleMIG Nozzle
Narrow design allows access in
tight spaces and provides better
visibility of puddle during welding.
Push nozzle over contact tip and
adapter until it is seated onto
adapter. Contact tip will be
exposed approximately 7/16 in
(11.3 mm) when installed properly.
Tools Needed:
Use with solid or flux cored wire.
Push nozzle over contact tip and
adapter until it is seated onto
adapter. End of contact tip will be
flush with end of nozzle when
installed properly.
feed roll is set to correct groove to
match wire size (see Section 7-4).
Tighten
13
52
. Hold wire tightly to keep it
from unraveling.
6 in
(150 mm)
Pull and hold wire; cut off end.
. Use pressure indicator
scale to set a desired
drive roll pressure.
1
2
3
4
Pressure
Indicator
Scale
(102 mm)
Push wire thru guides into gun;
continue to hold wire.
4 in
Be sure that wire is positioned
in proper feed roll groove.
Close and tighten pressure
assembly, and let go of wire.
Press gun trigger until wire comes
out of gun.
OM-219 316 Page 18
Remove gun nozzle
and contact tip.
Be sure that tip matches wire diameter.
Reinstall contact tip and nozzle.
Turn power on. Be sure that Voltage range
switch is set to range 1, 2, 3, or 4 to feed wire.
Rotate knob until it “clicks” into detent. Wire
will not feed if range switch is set between
ranges.
Tighten
1
2
3
WOOD
4
Feed wire to check drive roll pressure.
Tighten knob enough to prevent slipping.
Cut off wire. Close door.
Ref. 803 714-A
Page 23
6-1.Controls
SECTION 6 − OPERATION
1
NE PAS CHANGER
DE PROCÉDÉ
2
1Wire Speed Control
Use control to select a wire feed speed. As
Voltage switch setting increases, wire
speed range also increases (see weld
setting label in welding power source or
3
Section 6-2).
2Power Switch
3Voltage Switch
The higher the selected number, the
thicker the material that can be welded
Ref. 230 002-A
(see weld setting label in welding power
source or Sections 6-2). Do not switch
under load.
. Switch must “click” into detent position
for weld output.
OM-219 316 Page 19
Page 24
6-2.Weld Parameter Chart
OM-219 316 Page 20
Page 25
217 618-A
OM-219 316 Page 21
Page 26
SECTION 7 − MAINTENANCE &TROUBLESHOOTING
7-1.Routine Maintenance
Y Disconnect power before maintaining.
3 Months
Replace
unreadable
labels.
6 Months
Blow out or
vacuum inside.
During heavy
service, clean
monthly.
Or
7-2.Overload Protection
Repair or
replace
cracked
weld cable.
1
Clean and
tighten weld
terminals.
1Supplementary Protector CB1
CB1 protects unit from overload. If
CB1 opens, unit shuts down.
Reset supplementary protector.
802 441
7-3.Drive Motor Protection
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.
OM-219 316 Page 22
Page 27
7-4.Changing Drive Roll Or Wire Inlet Guide
1
2
Tools Needed:
4
.023/.025 Groove.030/.035 Groove
1Inlet Wire Guide Securing
Screw
2Inlet Wire Guide
Loosen screw. Slide tip as close to
drive rolls as possible without
touching. Tighten screw.
3Drive Roll
3
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 5-9).
4Retaining Pin
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
7-5.Replacing Gun Contact Tip
Stamped .030/.035
Ref. 803 714-A
Y Turn Off power before
replacing contact tip.
1Nozzle
2Contact Tip
Cut off welding wire at contact tip.
Remove nozzle.
Remove contact tip and install new
contact tip. Reinstall nozzle.
Tools Needed:
2
1
Ref. 802 399-A
OM-219 316 Page 23
Page 28
7-6.Cleaning Or Replacing Gun Liner
Y Disconnect gun from unit.
Tools Needed:
8 mm / 10mm
8 mm
Head Tube
Remove nozzle, contact tip,
adapter, gas diffuser, and wire
outlet guide.
10 mm
Remove liner.
OM-219 316 Page 24
Lay gun cable out straight
before installing new liner.
Blow out gun casing.
To Reassemble Gun:
Insert new liner.
Install wire outlet guide so that 1/8
in (3 mm) of liner sticks out. Hand
tighten outlet guide, and then
tighten two full turns more.
Cut liner off so that 3/4 in (19 mm)
sticks out of head tube.
Install gas diffuser, adapter, contact
tip, and nozzle.
Ref. 802 446-A
Page 29
7-7. Replacing Switch And/Or Head Tube
1
Remove handle
locking nut.
4
Secure head
tube in vice.
Y 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.
6
Tools Needed:
5
Loosen jam nut.
Remove from vice
and turn head tube
out by hand.
Hand-tighten head tube into cable connector.
8
Remove from vice. Reposition handle and install
switch housing. Secure with handle locking nut.
7
Place head tube in vice and tighten until
nuts are tight.
19 mm
Ref. ST-800 795-C
OM-219 316 Page 25
Page 30
7-8.Troubleshooting Table
d
TroubleRemedy
No weld output; wire does not feed; fan
oes not run.
Secure power cord plug in receptacle (see Section 5-6).
Replace building line fuse or reset circuit breaker if open.
Place Power switch in On position (see Section 6-1).
Reset welding power source supplementary protector (see Section 7-2).
No weld output; wire does not feed; fan
motor continues to run.
No weld output; wire feeds.
Low weld output.Connect unit to proper input voltage or check for low line voltage.
Electrode wire feeding stops during
welding.
Thermostat TP1 open (overheating). Allow fan to run with gun trigger switch off; thermostat closes when
unit has cooled (see Section 4-2).
Check Voltage range switch position. Rotate knob until it “clicks” into detent at desired range setting.
Secure gun trigger leads (see Section 5-1).
Connect work clamp to get good metal to metal contact.
Replace contact tip (see Section 7-5).
Check for proper polarity connections (see Section 5-4).
Check thumbscrew securing gun end to feed head adapter and tighten if necessary.
Place voltage switch in desired position (see Section 6-1).
Straighten gun cable and/or replace damaged parts.
Adjust drive roll pressure (see Section 5-9).
Change to proper drive roll groove (see Section 7-4).
Readjust hub tension (see Section 5-7).
Be sure that wire is positioned in proper drive roll groove and wire is laying in the groove.
Replace contact tip if blocked (see Section 7-5).
Clean or replace wire inlet guide or liner if dirty or plugged (see Section 7-4 or Section 7-6).
Replace drive roll or pressure bearing if worn or slipping (see Section 7-4).
Secure gun trigger leads or repair leads (see Section 5-1).
Check and clear any restrictions at drive assembly and liner (see Section 5-9 or Section 7-6).
Release gun trigger and allow gun and motor protection circuitry to reset (see Section 7-3).
Gun is not secured to feed head. Check thumbscrew securing gun end to feed head adapter and tighten
if necessary.
Have nearest Factory Authorized Service Agent check drive motor.
OM-219 316 Page 26
Page 31
SECTION 8 − ELECTRICAL DIAGRAM
Figure 8-1. Circuit Diagram
230 952-A
OM-219 316 Page 27
Page 32
SECTION 9 − MIG WELDING (GMAW) GUIDELINES
9-1.Typical MIG Process Connections
Regulator/
Flowmeter
Wire Feeder/
Power Source
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.
Shielding Gas
Gas Hose
Gun
Work Clamp
Workpiece
light mig 5/97 / Ref. 803 715-A
OM-219 316 Page 28
Page 33
9-2.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.
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.
1
2
5
4
0°-15°
90°90°
End View of Work AngleSide View of Gun Angle
GROOVE WELDS
1Hold Gun and Control Gun
Trigger
2Workpiece
3
3Work Clamp
4Electrode Extension (Stickout)
1/4 to 1/2 in (6 To 13 mm)
5Cradle Gun and Rest Hand on
Workpiece
45°
45°
End View of Work AngleSide View of Gun Angle
FILLET WELDS
0°-15°
S-0421-A
OM-219 316 Page 30
Page 35
9-4.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.
10°
Push
Perpendicular
GUN ANGLES AND WELD BEAD PROFILES
ShortNormalLong
10°
Drag
ELECTRODE EXTENSIONS (STICKOUT)
ShortNormalLong
FILLET WELD ELECTODE EXTENSIONS (STICKOUT)
Slow
NormalFast
GUN TRAVEL SPEED
S-0634
OM-219 316 Page 31
Page 36
9-5.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.
12
3
9-6.Poor Weld Bead Characteristics
1Stringer Bead − Steady
Movement Along Seam
2Weave Bead − Side To Side
Movement Along Seam
3Weave Patterns
Use weave patterns to cover a wide
Incorrect polarity.Check polarity required by welding wire, and change to correct polarity at welding power source.
maintaining proper welding wire extension and arc characteristics.
Keep arc on leading edge of weld puddle.
Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.
Reduce travel speed.
9-12. Troubleshooting − Incomplete Fusion
Incomplete Fusion − failure of weld metal to fuse completely with
base metal or a preceeding weld bead.
S-0637
Possible CausesCorrective 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.
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.
Use correct gun angle of 0 to 15 degrees.
9-13. Troubleshooting − Burn-Through
Burn-Through − weld metal melting completely through base metal
resulting in holes where no metal remains.
Possible CausesCorrective Actions
Excessive heat input.Select lower voltage range and reduce wire feed speed.
S-0640
OM-219 316 Page 34
Increase and/or maintain steady travel speed.
Page 39
9-14. Troubleshooting − Waviness Of Bead
Waviness Of Bead − weld metal that is not parallel and does not cover
joint formed by base metal.
Possible CausesCorrective 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.
9-15. 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.
Possible CausesCorrective Actions
Excessive heat input.Use restraint (clamp) to hold base metal in position.
S-0641
S-0642
Make tack welds along joint before starting welding operation.
Select lower voltage range and/or reduce wire feed speed.
Increase travel speed.
Weld in small segments and allow cooling between welds.
OM-219 316 Page 35
Page 40
9-16. Common MIG Shielding Gases
t feed
(bird
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.
Application
Gas
ArgonX
Argon + 25% CO
80% or greater Argon +
balance CO2 or Oxygen
100% CO
Tri-Mix
1Limited short circuiting use
290% HE + 7-1/2% AR + 2-1/2% CO
2
2
2
Spray Arc SteelShort Circuiting Steel
XX
2
X
1
X
Short Circuiting
Stainless Steel
X
9-17. Troubleshooting Guide For Semiautomatic Welding Equipment
ProblemProbable CauseRemedy
Wire feed motor operates, but
wire does no
.
Too little pressure on wire feed rolls.Increase pressure setting on wire feed rolls.
Incorrect wire feed rolls.Check size stamped on wire feed rolls, replace to match
wire size and type if necessary.
Wire spool brake pressure too high.Decrease brake pressure on wire spool.
Restriction in the gun and/or assembly.Check and replace cable, gun, and contact tip if
damaged. Check size of contact tip and cable liner,
replace if necessary.
Aluminum
Wire curling up in front of the
wire feed rolls
Wire feeds, but no gas flows.
nesting).
Too much pressure on wire feed rolls.Decrease pressure setting on wire feed rolls.
Incorrect cable liner or gun contact tip size.Check size of contact tip and check cable liner length
Gun end not inserted into drive housing properly.Loosen gun securing bolt in drive housing and push gun
Dirty or damaged (kinked) liner.Replace liner.
Gas cylinder empty.Replace empty gas cylinder.
Gas nozzle plugged.Clean or replace gas nozzle.
Gas cylinder valve not open or flowmeter not adjusted. Open gas valve at cylinder and adjust flow rate.
Restriction in gas line.Check gas hose between flowmeter and wire feeder, and
Loose or broken wires to gas solenoid.Have Factory Authorized Service Agent repair wiring.
Gas solenoid valve not operating.Have Factory Authorized Service Agent replace gas
Incorrect primary voltage connected to welding power
source.
and diameter, replace if necessary.
end into housing just enough so it does not touch wire
feed rolls.
gas hose in gun and cable assembly.
solenoid valve.
Check primary voltage and relink welding power source
for correct voltage.
OM-219 316 Page 36
Page 41
ProblemRemedyProbable Cause
Welding arc not stable.
Wire slipping in drive rolls.Adjust pressure setting on wire feed rolls. Replace worn
Wrong size gun liner or contact tip.Match liner and contact tip to wire size and type.
Incorrect voltage setting for selected wire feed speed on
welding power source.
Loose connections at the gun weld cable or work cable. Check and tighten all connections.
Gun in poor shape or loose connection inside gun.Repair or replace gun as necessary.
+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.
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-219 316 Page 41
Page 46
10-3. Optional Drive Rolls
For All Feed Head Assemblies
PART NO.
202 925.023/.025 (.6) and .030/.035 (.8 and .9)
202 926.030/.035 (.8 and .9) and .045 (1.2 VK Groove)
WIRE DIAMETER
INCHES (mm)
10-4. Options
PART NO.DESCRIPTIONREMARKS
770 187Running Gear/Cylinder RackFor One Small Gas Cylinder, 100 lb (45 kg) max.
194 776Small Running Gear/Cylinder RackFor One Small Gas Cylinder, 75 lb (34 kg) max.
212 492Regulator/FlowmeterFor use with CO2 shielding gas, 10−50 CFH
144 108Gas Hose, 5 ftFor use with regulator/flowmeter 212 492
220 747Regulator/FlowmeterFor use with Argon shielding gas, 10−50 CFH
222 874Gas Hose, 5 ftFor use with regulator/flowmeter 220 747
NOTE: If individual parts are required, see Parts List chapter of this manual for part number to order.
OM-219 316 Page 42
Page 47
Warranty
Effective January 1, 2006
(Equipment with a serial number preface of “LG” or newer)
This limited warranty supersedes all previous manufacturers
warranties and is exclusive with no other guarantees or
warranties expressed or implied.
LIMITED WARRANTY − Subject to the terms and conditions
below, warrants to its original retail purchaser that new
equipment sold after the effective date of this limited warranty is
free of defects in material and workmanship at the time it is
shipped from factory. 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, manufacturer will
repair or replace any warranted parts or components that fail
due to such defects in material or workmanship. Manufacturer
must be notified in writing within thirty (30) days of such defect or
failure, at which time manufacturer will provide instructions on
the warranty claim procedures to be followed.
Manufacturer 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 the
distributor.
1. 5 Years Parts — 3 Years Labor
* Original main power rectifiers
2. 3 Years — Parts and Labor
* Transformer/Rectifier Power Sources
* Plasma Arc Cutting Power Sources
* Process Controllers
* Semi-Automatic and Automatic Wire Feeders
* Inverter Power Sources (Unless Otherwise Stated)
* Water Coolant Systems (Integrated)
* Engine Driven Welding Generators
(NOTE: Engines are warranted separately by the
engine manufacturer.)
3. 1 Year — Parts and Labor Unless Specified
* Motor Driven Guns (w/exception of Spoolmate
Spoolguns)
* Positioners and Controllers
* Automatic Motion Devices
* RFCS Foot Controls
* Induction Heating Power Sources, Coolers, and
Electronic Controls/Recorders
* Water Coolant Systems (Non-Integrated)
* Flowgauge and Flowmeter Regulators (No Labor)
* Replacement Parts (No Labor)
* Spoolmate Spoolguns
* Canvas Covers
Limited Warranty shall not apply to:
1. Consumable components; such as contact tips,
cutting nozzles, contactors, relays, brushes, slip
rings, or parts that fail due to normal wear.
2. Items furnished by manufacturer, 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
manufacturer, 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.
MANUFACTURER’S 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 manufacturer’s option: (1)
repair; or (2) replacement; or, where authorized in writing by
manufacturer in appropriate cases, (3) the reasonable cost of
repair or replacement at an authorized 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. Manufacturer’s option of repair or
replacement will be F.O.B., Factory at Appleton, Wisconsin, or
F.O.B. at an authorized service facility as determined by
manufacturer. 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 MANUFACTURER 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 MANUFACTURER IS EXCLUDED AND
DISCLAIMED BY MANUFACTURER.
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.
brand_warr 2006−01
Page 48
Owner’s Record
Please complete and retain with your personal records.
Model NameSerial/Style Number
Purchase Date(Date which equipment was delivered to original customer.)
Distributor
Address
City
StateZip
Resources Available
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
Owner’s Manuals
Circuit Diagrams
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 USA1/04
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