Flux Cored (FCAW) With
Voltage-Sensing Wire Feeder
Description
Engine Driven Welding Generator
Big Blue 251D
Visit our website at
www.MillerWelds.com
Page 2
From Miller to You
Thank you and congratulations on choosing Miller. Now you can get
the job done and get it done right. We know you don’t have time to do
it any other way.
That’s why when Niels Miller first started building arc welders in 1929,
he made sure his products offered long-lasting value and superior
quality. Like you, his customers couldn’t afford anything less. Miller
products had to be more than the best they could be. They had to be the
best you could buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Miller you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will
help you figure out what the problem is. The
Miller is the first welding
equipment manufacturer in
the U.S.A. to be registered to
the ISO 9001:2000 Quality
System Standard.
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.
Working as hard as you do
− every power source from
Miller is backed by the most
hassle-free warranty in the
business.
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.
SECTION 1 − SAFETY PRECAUTIONS − READ BEFORE USING
rom _nd_8/03
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.
Marks a special safety message.
Means “Note”; not safety related.
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 1-7. Read and follow all Safety Standards.
Only qualified persons should install, operate, maintain, and re-
pair 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
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.
Additional safety precautions are required when any of the following electri-
cally 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!
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 sep-
arate cable.
Do not touch electrode if you are in contact with the work, ground, or anoth-
er electrode from a different machine.
live whenever the output is on. The input power circuit and
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.
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 work-
table 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 in inverters after stopping engine.
Stop engine on inverter 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.
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.
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.
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 from arc rays and sparks 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 (wool
and leather) and foot protection.
OM-480 Page 1
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WELDING can cause fire or explosion.
HOT PARTS can cause severe burns.
Welding on closed containers, such as tanks, drums, or
pipes, can cause them to blow up. Sparks can fly off from the
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, cuf-
fless trousers, high shoes, and a cap.
Remove any combustibles, such as a butane lighter or matches, from your
person before doing any welding.
Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B for hot
work and have a fire watcher and extinguisher nearby.
welding arc. The flying sparks, hot workpiece, and hot
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.
Allow cooling period before maintaining.
Wear protective gloves and clothing when working on
a hot engine.
Do not touch hot engine parts or just-welded parts
bare-handed.
NOISE can damage hearing.
Noise from some processes or equipment can damage
hearing.
Wear approved ear protection if noise level is high.
MAGNETIC FIELDS can affect pacemakers.
Pacemaker wearers keep away.
Wearers should consult their doctor before going
near arc welding, gouging, or spot welding operations.
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 de-
signed 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.Engine Hazards
BATTERY EXPLOSION can BLIND.
Always wear a face shield, rubber gloves, and protec-
tive clothing when working on a battery.
Stop engine before disconnecting or connecting bat-
tery cables or servicing battery.
Do not allow tools to cause sparks when working on a battery.
Do not use welder to charge batteries or jump start vehicles.
Observe correct polarity (+ and −) on batteries.
Disconnect negative (−) cable first and connect it last.
FUEL can cause fire or explosion.
Stop engine and let it cool off before checking or add-
ing fuel.
Do not add fuel while smoking or if unit is near any
sparks or open flames.
Do not overfill tank — allow room for fuel to expand.
Do not spill fuel. If fuel is spilled, clean up before starting engine.
Dispose of rags in a fireproof container.
Always keep nozzle in contact with tank when fueling.
OM-480 Page 2
MOVING PARTS can cause injury.
Keep away from fans, belts, and rotors.
Keep all doors, panels, covers, and guards closed
and securely in place.
Stop engine before installing or connecting unit.
Have only qualified people remove guards or covers for maintenance
and troubleshooting as necessary.
To prevent accidental starting during servicing, disconnect negative (−)
battery cable from battery.
Keep hands, hair, loose clothing, and tools away from moving parts.
Reinstall panels or guards and close doors when servicing is finished
and before starting engine.
Before working on generator, remove spark plugs or injectors to keep
engine from kicking back or starting.
Block flywheel so that it will not turn while working on generator compo-
nents.
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STEAM AND HOT COOLANT can burn.
If possible, check coolant level when engine is cold to
avoid scalding.
Always check coolant level at overflow tank, if pres-
ent on unit, instead of radiator (unless told otherwise
in maintenance section or engine manual).
If the engine is warm, checking is needed, and there is no overflow tank,
follow the next two statements.
Wear safety glasses and gloves and put a rag over radiator cap.
Turn cap slightly and let pressure escape slowly before completely re-
moving cap.
BATTERY ACID can BURN SKIN and EYES.
Do not tip battery.
Replace damaged battery.
Flush eyes and skin immediately with water.
ENGINE HEAT can cause fire.
Do not locate unit on, over, or near combustible
surfaces or flammables.
Keep exhaust and exhaust pipes way from flam-
mables.
ENGINE EXHAUST GASES can kill.
Use equipment outside in open, well-ventilated ar-
eas.
If used in a closed area, vent engine exhaust outside
and away from any building air intakes.
1-4.Compressed Air Hazards
BREATHING COMPRESSED AIR can
cause serious injury or death.
Do not use compressed air for breathing.
Use only for cutting, gouging, and tools.
COMPRESSED AIR can cause injury.
Wear approved safety goggles.
Do not direct air stream toward self or others.
TRAPPED AIR PRESSURE AND WHIPPING
HOSES can cause injury.
Release air pressure from tools and system before
servicing, adding or changing attachments, or opening compressor oil drain or oil fill cap.
EXHAUST SPARKS can cause fire.
Do not let engine exhaust sparks cause fire.
Use approved engine exhaust spark arrestor in re-
quired areas — see applicable codes.
HOT METAL from air arc cutting and
gouging can cause fire or explosion.
Do not cut or gouge near flammables.
Watch for fire; keep extinguisher nearby.
HOT PARTS can cause burns and injury.
Do not touch hot compressor or air system parts.
Let system cool down before touching or servicing.
READ INSTRUCTIONS.
Read Owner’s Manual before using or servicing unit.
Stop engine and release air pressure before
servicing.
1-5.Additional Symbols For Installation, Operation, And Maintenance
FALLING UNIT can cause injury.
Use lifting eye to lift unit only, NOT running gear, gas
cylinders, trailer, 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.
OVERHEATING can damage motors.
Turn off or unplug equipment before starting or stop-
ping engine.
Do not let low voltage and frequency caused by low
engine speed damage electric motors.
Do not connect 50 or 60 Hertz motors to the 100 Hertz receptacle where
applicable.
FLYING SPARKS can cause injury.
Wear a face shield to protect eyes and face.
Shape tungsten electrode only on grinder with proper
guards in a safe location wearing proper face, hand,
and body protection.
Sparks can cause fires — keep flammables away.
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.
TILTING OF TRAILER can cause injury.
Use tongue jack or blocks to support weight.
Properly install welding generator onto trailer accord-
ing to instructions supplied with trailer.
OM-480 Page 3
Page 8
READ INSTRUCTIONS.
ARC WELDING can cause interference.
Use only genuine MILLER/Hobart replacement
parts.
Perform engine and air compressor (if applicable)
maintenance and service according to this manual
and the engine/air compressor (if applicable) manuals.
H.F. RADIATION can cause interference.
High-frequency (H.F.) can interfere with radio naviga-
tion, 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.
1-6.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.
Electromagnetic energy can interfere with sensitive
electronic equipment such as microprocessors,
computers, and computer-driven equipment such as
robots.
Be sure all equipment in the welding area is electro-
magnetically 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.
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.
1-7.Principal Safety Standards
Safety i n W elding, 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 Bou-
1-8.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.
levard, 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).
To reduce magnetic fields in the workplace, use the following
procedures:
1. Keep cables close together by twisting or taping them.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
4. Keep welding power source and cables as far away from
operator as practical.
5. Connect work clamp to workpiece as close to the weld as
possible.
About Pacemakers:
Pacemaker wearers consult your doctor first. If cleared by your doctor,
then following the above procedures is recommended.
OM-480 Page 4
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SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT
UTILISATION
rom_fre 8/03
Avertissement: Protégez vous et les autres des blessures − lisez et suivez ces précautions.
2-1.Signification des symboles
Signifie Mise en garde ! Soyez vigilant ! Cette procédure
présente des risques de danger ! Ceux-ci sont identifiés par
des symboles adjacents aux directives.
Identifie un message de sécurité particulier.
Signifie NOTA ; n’est pas relatif à la sécurité.
2-2.Dangers relatifs au soudage à l’arc
Les symboles présentés ci-après sont utilisés tout au long du
présent manuel pour attirer votre attention et identifier les risques de danger. Lorsque vous voyez un symbole, soyez
vigilant et suivez les directives mentionnées afin d’éviter tout
danger. Les consignes de sécurité présentées ci-après ne font
que résumer l’information contenue dans les normes de sécurité énumérées à la section 2-6 . Veuillez lire et respecter toutes
ces normes de sécurité.
L’installation, l’utilisation, l’entretien et les réparations ne
doivent être confiés qu’à des personnes qualifiées.
Au cours de l’utilisation, tenir toute personne à l’écart et plus
particulièrement les enfants.
UN CHOC ÉLECTRIQUE peut tuer.
Un simple contact avec des pièces électriques peut
provoquer une électrocution ou des blessures graves.
L’électrode et le circuit de soudage sont sous tension dès
que l’appareil est sur ON. Le circuit d’entrée et les circuits
moment-là. En soudage semi-automatique ou automatique, le fil, le dévidoir, le
logement des galets d’entraînement et les pièces métalliques en contact avec
le fil de soudage sont sous tension. Des matériels mal installés ou mal mis à la
terre présentent un danger.
Ne jamais toucher les pièces électriques sous tension.
Porter des gants et des vêtements de protection secs ne comportant pas
de trous.
S’isoler de la pièce et de la terre au moyen de tapis ou d’autres moyens iso-
lants suffisamment grands pour empêcher le contact physique éventuel
avec la pièce ou la terre.
Ne pas se servir de source électrique àcourant électrique dans les zones
humides, dans les endroits confinés ou là où on risque de tomber.
Se servir d’une source électrique àcourant électrique UNIQUEMENT si le
procédé de soudage le demande.
Si l’utilisation d’une source électrique àcourant électrique s’avère néces-
saire, se servir de la fonction de télécommande si l’appareil en est équipé.
Des précautions de sécurité supplémentaires sont requises dans des envi-
ronnements à risque comme: les endroits humides ou lorsque l’on porte
des vêtements mouillés; sur des structures métalliques au sol, grillages et
échafaudages; dans des positions assises, à genoux et allongées; ou
quand il y a un risque important de contact accidentel avec la pièce ou le
sol. Dans ces cas utiliser les appareils suivants dans l’ordre de préférence:
1) un poste à souder DC semi−automatique de type CV (MIG/MAG), 2) un
poste à souder manuel (électrode enrobée) DC, 3) un poste à souder manuel AC avec tension à vide réduite. Dans la plupart des cas, un poste
courant continu de type CV est recommandé. Et, ne pas travailler seul!
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).
Installer et mettre à la terre correctement cet 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.
internes de l’appareil sont également sous tension à ce
Ce groupe de symboles signifie Mise en garde !
Soyez vigilant ! Il y a des
aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVEMENT et aux
PIÈCES CHAUDES. Reportez-vous aux symboles et aux directives ci-dessous afin de connaître les mesures à prendre pour éviter tout danger.
En effectuant les raccordements d’entrée fixer d’abord le conducteur de
mise à la terre approprié et contre-vérifier les connexions.
Vérifier fréquemment le cordon d’alimentation pour voir s’il n’est pas en-
dommagé ou dénudé − remplacer le cordon immédiatement s’il est
endommagé − un câble dénudé peut provoquer une électrocution.
Mettre l’appareil hors tension quand on ne l’utilise pas.
Ne pas utiliser des câbles usés, endommagés, de grosseur insuffisante ou
mal épissés.
Ne pas 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 utiliser le connecteur de pièce ou le câble de retour.
Ne pas toucher l’électrode quand on est en contact avec la pièce, la terre ou
une électrode provenant d’une autre machine.
N’utiliser qu’un matériel en bon état. Réparer ou remplacer sur-le-champ
les pièces endommagées. Entretenir l’appareil conformément à ce
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-métal avec
la pièce à souder ou la table de travail, le plus près possible de la soudure.
Isoler la pince de masse quand pas mis à la pièce pour éviter le contact
avec tout objet métallique.
risques de danger reliés
Une tension DC importante subsiste à l’intérieur
des onduleurs après avoir coupé l’alimentation.
Couper l’alimentation du poste et décharger les condensateurs d’entrée
comme indiqué dans la Section Maintenance avant de toucher des composants.
LES FUMÉES ET LES GAZ peuvent
être dangereux.
Le soudage génère des fumées et des gaz. Leur inhalation
peut être dangereux pour votre santé.
Eloigner votre tête des fumées. Ne pas respirer les fumées.
À l’interieur, ventiler la zone et/ou utiliser un échappement au niveau de
l’arc pour l’évacuation des fumées et des gaz de soudage.
Si la ventilation est insuffisante, utiliser un respirateur à alimentation d’air
homologué.
Lire les spécifications de sécurité des matériaux (MSDSs) et les instruc-
tions du fabricant concernant les métaux, les consommables, les
revêtements, les nettoyants et les dégraisseurs.
Travailler dans un espace fermé seulement s’il est bien ventilé ou en por-
tant un respirateur à alimentation d’air. Demander toujours à un surveillant
dûment formé de se tenir à proximité. Des fumées et des gaz de soudage
peuvent déplacer l’air et abaisser le niveau d’oxygène provoquant des
blessures ou des accidents mortels. S’assurer que l’air de respiration ne
présente aucun danger.
Ne pas souder dans des endroits situés à proximité d’opérations de 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.
Ne pas souder des métaux munis d’un revêtement, tels que l’acier galvani-
sé, plaqué en plomb ou au cadmium à moins que le revêtement n’ait été
enlevé dans la zone de soudure, que l’endroit soit bien ventilé, et si nécessaire, en portant un respirateur à alimentation d’air. Les revêtements et
tous les métaux renfermant ces éléments peuvent dégager des fumées
toxiques en cas de soudage.
OM-480 Page 5
Page 10
LES ACCUMULATIONS DE GAZ risquent de provoquer des blessures ou
même la mort.
Fermer l’alimentation du gaz protecteur en cas de
non utilisation.
Veiller toujours à bien aérer les espaces confinés ou se servir d’un respi-
rateur d’adduction d’air homologué.
LES RAYONS DE L’ARC peuvent provoquer des brûlures dans les yeux et
sur la peau.
Le rayonnement de l’arc du procédé de soudage génère
infrarouges) susceptibles de provoquer des brûlures dans les yeux et sur la
peau. Des étincelles sont projetées pendant le soudage.
Porter un casque de soudage muni d’un écran de filtre approprié pour pro-
téger votre visage et vos yeux pendant le soudage ou pour regarder (voir
ANSI Z49.1 et Z87.1 énuméré dans les normes de sécurité).
Porter des protections approuvés pour les oreilles si le niveau sondre est
trop élevé.
Utiliser des écrans ou des barrières pour protéger des tiers de l’éclair et de
l’éblouissement; demander aux autres personnes de ne pas regarder l’arc.
Porter des vêtements de protection constitué dans une matière durable, ré-
sistant au feu (laine ou cuir) et une protection des pieds.
des rayons visibles et invisibles intenses (ultraviolets et
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
l’arc de soudure. La projection d’étincelles, des pièces chaudes et des
équipements chauds peut provoquer des incendies et des brûlures. Le contact
accidentel de l’électrode avec des objets métalliques peut provoquer des
étincelles, une explosion, un surchauffement ou un incendie. Avant de
commencer le soudage, vérifier et s’assurer que l’endroit ne présente pas de
danger.
Se protéger et d’autres personnes de la projection d’étincelles et de métal
chaud.
Ne pas souder dans un endroit là où des étincelles peuvent tomber sur des
substances inflammables.
Déplacer toutes les substances inflammables à une distance de 10,7 m de
l’arc de soudage. En cas d’impossibilité les recouvrir soigneusement avec
des protections homologués.
Des étincelles et des matériaux chauds du soudage peuvent facilement
passer dans d’autres zones en traversant de petites fissures et des
ouvertures.
Surveiller tout déclenchement d’incendie et tenir un extincteur à proximité.
Le soudage effectué sur un plafond, plancher, paroi ou séparation peut dé-
clencher un incendie de l’autre côté.
Ne pas effectuer le soudage sur des conteneurs fermés tels que des réser-
voirs, tambours, ou conduites, à moins qu’ils n’aient été préparés
correctement conformément à 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 le transport du courant sur une longue distance par des chemins inconnus éventuels en provoquant 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-électro-
de ou couper le fil à la pointe de contact.
Porter des vêtements de protection dépourvus d’huile tels que des gants
en cuir, une chemise en matériau lourd, des pantalons sans revers, des
chaussures hautes et un couvre chef.
Avant de souder, retirer toute substance combustible de vos poches telles
qu’un allumeur au butane ou des allumettes.
leur éclatement. Des étincelles peuvent être projetées de
Suivre les recommandations dans OSHA 1910.252(a)(2)(iv) et NFPA 51B
pour les travaux à chaud et avoir de la surveillance et un extincteur à proximité.
DES PARTICULES VOLANTES
peuvent blesser les yeux.
Le soudage, l’écaillement, le passage de la pièce
à la brosse en fil de fer, et le meulage génèrent
lantes. Pendant la période de refroidissement des soudures, elles risquent de projeter du laitier.
Porter des lunettes de sécurité avec écrans latéraux ou un écran facial.
des étincelles et des particules métalliques vo-
DES PIÈCES CHAUDES peuvent
provoquer des brûlures graves.
Prévoir une période de refroidissement avant d’effec-
tuer des travaux d’entretien.
Porter des gants et des vêtements de protection pour
travailler sur un moteur chaud.
Ne pas toucher à mains nues les parties chaudes du moteur ni les pièces
récemment soudées.
LE BRUIT peut affecter l’ouïe.
Le bruit des processus et des équipements peut affecter
l’ouïe.
Porter des protections approuvés pour les oreilles si
le niveau sondre est trop élevé.
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.
Si des BOUTEILLES sont endommagées, elles pourront exploser.
Des bouteilles de gaz protecteur contiennent du gaz sous
haute pression. Si une bouteille est endommagée, elle peut
exploser. Du fait que les bouteilles de gaz font normalement partie du procédé de soudage, les manipuler avec
précaution.
Protéger les bouteilles de gaz comprimé d’une chaleur excessive, des
chocs mécaniques, du laitier, des flammes ouvertes, 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 placer une torche de soudage sur une bouteille à gaz.
Une électrode de soudage ne doit jamais entrer en contact avec une bou-
teille.
Ne jamais souder une bouteille pressurisée − risque d’explosion.
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.
Ne pas tenir la tête en face de la sortie en ouvrant la soupape de la bouteille.
Maintenir le chapeau de protection 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 publication P-1 CGA énumérées dans les
normes de sécurité.
2-3.Dangers existant en relation avec le moteur
LES ACCUMULATIONS DE GAZ risquent de provoquer des blessures ou
même la mort.
Fermer l’alimentation du gaz protecteur en cas de
non utilisation.
Veiller toujours à bien aérer les espaces confinés ou se servir d’un respi-
rateur d’adduction d’air homologué.
OM-480 Page 6
L’ACIDE DE LA BATTERIE peut provoquer des brûlures dans les YEUX et
sur la PEAU.
Ne pas renverser la batterie.
Remplacer une batterie endommagée.
Rincer immédiatement les yeux et la peau à l’eau.
Page 11
L’EXPLOSION DE LA BATTERIE peut
RENDRE AVEUGLE.
Toujours porter une protection faciale, des gants en
caoutchouc et vêtements de protection lors d’une intervention sur la batterie.
Arrêter le moteur avant de débrancher ou de brancher les câbles de
batterie.
Eviter de provoquer des étincelles avec les outils en travaillant sur la
batterie.
Ne pas utiliser le poste de soudage pour charger les batteries ou des véhi-
cules de démarrage rapide.
Observer la polarité correcte (+ et −) sur les batteries.
Débrancher le câble négatif (–) en premier lieu. Le rebrancher en dernier
lieu.
LE CARBURANT MOTEUR peut provoquer un incendie ou une explosion.
Arrêter le moteur avant de vérifier le niveau de carbu-
rant ou de faire le plein.
Ne pas faire le plein en fumant ou proche d’une sour-
ce d’étincelles ou d’une flamme nue.
Ne pas faire le plein de carburant à ras bord; prévoir de l’espace pour son
expansion.
Faire attention de ne pas renverser de carburant. Nettoyer tout carbu-
rant renversé avant de faire démarrer le moteur.
Jeter les chiffons dans un récipient ignifuge.
Pour empêcher tout démarrage accidentel pendant les travaux d’entretien,
débrancher le câble négatif (−) de batterie de la borne.
Ne pas approcher les mains, cheveux, vêtements lâches et outils des orga-
nes mobiles.
Remettre en place les panneaux ou les dipositifs de protection et fermer les
portes à la fin des travaux d’entretien et avant de faire démarrer le moteur.
Avant d’intervenir, déposer les bougies ou injecteurs pour éviter la mise en
route accidentelle du moteur.
Bloquer le volant moteur pour éviter sa rotation lors d’une intervention sur le
générateur.
LA VAPEUR ET LE LIQUIDE DE
REFROIDISSEMENT CHAUD peuvent
provoquer des brûlures.
Il est préférable de vérifier le liquide de
refroidissement une fois le moteur refroidi pour éviter
de se brûler.
Toujours vérifier le niveau de liquide de refroidissement dans le vase d’ex-
pansion (si présent), et non dans le radiateur (sauf si précisé autrement
dans la section maintenance du manuel du moteur).
Si le moteur est chaud et que le liquide doit être vérifié, opérer comme sui-
vant :
Mettre des lunettes de sécurité et des gants, placer un torchon sur le bou-
chondu radiateur.
Dévisser le bouchon légèrement et laisser la vapeur s’échapper avant
d’enlever le bouchon.
LA CHALEUR DU MOTEUR peut provoquer un incendie.
DES ORGANES MOBILES peuvent
provoquer des blessures.
Ne pas approcher les mains des ventilateurs, cour-
roies et autres pièces en mouvement.
Maintenir fermés et fixement en place les portes,
panneaux, recouvrements et dispositifs de
protection.
Arrêter le moteur avant d’installer ou brancher l’appareil.
Demander seulement à un personnel qualifié d’enlever les dispositifs de
sécurité ou les recouvrements pour effectuer, s’il y a lieu, des travaux d’entretien et de dépannage.
2-4.Dangers liés à l’air comprimé
RESPIRER L’AIR COMPRIMÉ peut provoquer des blessures graves ou causer
la mort.
Ne pas utiliser l’air comprimé pour respirer.
Utiliser l’air comprimé seulement pour le coupa-
ge, gougeage et les outils pneumatiques.
L’AIR COMPRIMÉ peut provoquer
des blessures.
Porter des lunettes de sécurité approuvées.
Ne pas diriger le jet d’air vers d’autres ou soi−
même.
L’AIR COMPRIME EMMAGASINE ET DES
TUYAUX SOUS PRESSION peuvent provoquer des blessures.
Relâcher la pression d’air de l’outillage ou du sys-
tème avant d’effectuer la maintenance, avant de
changer ou de rajouter des éléments ou avant
d’ouvrir la purge ou le bouchon de remplissage
d’huile.
Ne pas placer l’appareil sur, au-dessus ou à proximité
de surfaces inflammables.
Tenir à distance les produits inflammables de
l’échappement.
LES ÉTINCELLES À L’ÉCHAPPEMENT
peuvent provoquer un incendie.
Empêcher les étincelles d’échappement du moteur
de provoquer un incendie.
Utiliser uniquement un pare-étincelles approuvé −
voir codes en vigueur.
Le METAL CHAUD lors du coupage et
gougeage plasma peut provoquer un incendie ou une explosion.
Ne pas couper ou gouger à proximité de produits
inflammables.
Surveillez et garder un extincteur à proximité.
DES PIECES CHAUDES peuvent provoquer des brûlures et blessures.
Ne pas toucher le compresseur ou d’autres élé-
ments du circuit air comprimé chauds.
Laisser l’ensemble se refroidir avant de toucher
ou d’effectuer la maintenance.
LIRE LES INSTRUCTIONS.
Lisez le manuel d’instructions avant l’utilisation
ou la maintenance de l’appareil.
Arrêter le moteur et relâcher la pression avant
d’effectuer la maintenance.
2-5.Dangers supplémentaires en relation avec l’installation, le fonctionnement et la
maintenance
LA CHUTE DE L’APPAREIL peut
blesser.
Utiliser l’anneau de levage uniquement pour soulever
l’appareil lui-même ; sans chariot, de bouteilles de
gaz, remorque, ou autres accessoires.
Utiliser un équipement de levage de capacité suffisante pour lever
l’appareil.
En utilisant des fourches de levage pour déplacer l’unité, s’assurer
que les fourches sont suffisamment longues pour dépasser du côté
opposé de l’appareil.
OM-480 Page 7
Page 12
LE SURCHAUFFEMENT peut endommager le moteur électrique.
Arrêter ou déconnecter l’équipement avant de dé-
marrer ou d’arrêter le moteur.
Ne pas laisser tourner le moteur trop lentement sous
risque d’endommager le moteur électrique à cause
d’une tension et d’une fréquence trop faibles.
Ne pas brancher de moteur de 50 ou de 60 Hz à la prise de 100 Hz, s’il y a
lieu.
LES ÉTINCELLES VOLANTES risquent de provoquer des blessures.
Porter un écran facial pour protéger le visage et les
yeux.
Affuterr l’électrode au tungstène uniquement à la meuleuse dotée de pro-
tecteurs. Cette manoeuvre est à exécuter dans un endroit sûr lorsque
l’on porte l’équipement homologué de protection du visage, des mains et
du corps.
Les étincelles risquent de causer un incendie − éloigner toute substance
inflammable.
L’EMPLOI EXCESSIF peut
SURCHAUFFER L’ÉQUIPEMENT.
Laisser l’équipement refroidir ; respecter le facteur de
marche nominal.
Réduire le courant ou le facteur de marche avant de
poursuivre le soudage.
Ne pas obstruer les passages d’air du poste.
LES CHARGES ÉLECTROSTATIQUES peuvent endommager les
circuits imprimés.
Établir la connexion avec la barrette de terre avant de
manipuler des cartes ou des pièces.
Utiliser des pochettes et des boîtes antistatiques
pour stocker, déplacer ou expédier des cartes de
circuits imprimes.
UNE REMORQUE QUI BASCULE peut
entraîner des blessures.
Utiliser les supports de la remorque ou des blocs
pour soutenir le poids.
Installer convenablement le poste sur la remorque
comme indiqué dans le manuel s’y rapportant.
LIRE LES INSTRUCTIONS.
Utiliser seulement les pièces de rechange d’origine.
Effectuer la maintenance du moteur et du compres-
seur (si applicable) suivant ce manuel et le manuel du
moteur/compresseur (si applicable).
LE RAYONNEMENT HAUTE FRÉQUENCE (H.F.) risque de provoquer
des interférences.
Le rayonnement haute fréquence (H.F.) peut
provoquer des interférences avec les équipements
de radio−navigation et de communication, les
services de sécurité et les ordinateurs.
Demander seulement à des personnes qualifiées familiarisées avec des
équipements électroniques de faire fonctionner l’installation.
L’utilisateur est tenu de faire corriger rapidement par un électricien quali-
fié les interférences résultant de l’installation.
Si le FCC signale des interférences, arrêter immédiatement l’appareil.
Effectuer régulièrement le contrôle et l’entretien de l’installation.
Maintenir soigneusement fermés les portes et les panneaux des sources
de haute fréquence, maintenir les éclateurs à une distance correcte et
utiliser une terre et et un blindage pour réduire les interférences
éventuelles.
LE SOUDAGE À L’ARC risque de
provoquer des interférences.
L’énergie électromagnétique risque de provoquer
des interférences pour l’équipement électronique
sensible tel que les ordinateurs et l’équipement commandé par ordinateur tel que les robots.
Veiller à ce que tout l’équipement de la zone de soudage soit compatible
électromagnétiquement.
Pour réduire la possibilité d’interférence, maintenir les câbles de souda-
ge aussi courts que possible, les grouper, et les poser aussi bas que possible (ex. par terre).
Veiller à souder à une distance de 100 mètres de tout équipement élec-
tronique sensible.
Veiller à ce que ce poste de soudage soit posé et mis à la terre conformé-
ment à ce mode d’emploi.
En cas d’interférences après avoir pris les mesures précédentes, il in-
combe 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.
2-6.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).
2-7.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.
OM-480 Page 8
Afin de réduire les champs électromagnétiques en milieu de travail, respecter les consignes suivantes :
1. Garder les câbles ensemble en les torsadant ou en les fixant avec du
ruban adhésif.
2. Mettre tous les câbles du côté opposé à l’opérateur.
3. Ne pas s’enrouler les câbles autour du corps.
4. Garder le poste de soudage et les câbles le plus loin possible de soi.
5. Placer la pince de masse le plus près possible de la zone de soudage.
Consignes relatives aux stimulateurs cardiaques :
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.
Page 13
SECTION 3 − DEFINITIONS
3-1.Symbols And Definitions
A
Stop Engine
Fast/Slow
(Run/Idle)
Check Injectors/
Pump
PositiveNegative
Amperes
Fast (Run, Weld/
Battery (Engine)Circuit BreakerEngine Oil
V
Read Operator’s
Manual
Alternating
Current
G
1
Power)
Check Valve
Clearance
VoltsPanel/LocalRemote
EngineTemperatureOutput
Time
h
Slow (Idle)Start Engine
Fuel
Certified/Trained
Mechanic
Hours
Protective Earth
(Ground)
Welding Arc
Seconds
s
Do Not Switch
While Welding
Engine Coolant
Temperature
1
Single Phase
3
Three PhaseEther Starting Aid
OM-480 Page 9
Page 14
SECTION 4 − SPECIFICATIONS
Do not exceed tilt angles or engine
Do not
it wh
it
G
30°
D
C
E
A
C
4-1.Weld, Power, And Engine Specifications
Maximum
Rated Welding
Output
250 A,
40 Volts DC,
100% Duty Cycle
Amperage
Range
40 − 40095 (90)
4-2.Dimensions, Weights, And Operating Angles
Dimensions
Height40-1/2 in (1029 mm)
Width24-5/8 in (625 mm)
Depth56 in (1422 mm)
Open-Circuit
Voltage DC
(Nominal)
N
Generator Power
Rating
Single-Phase,
3 kVA/kW, 26 A,
120 V AC, 60 Hz
EngineFuel Capacity
Deutz F3L-1011
Air/Oil-Cooled,
Three-Cylinder,
29 HP Diesel Engine
11.3 gal (42.8 L)
A23-1/4 in (591 mm)
B24-5/8 in (625 mm)
C11/16 in (17 mm)
D2-7/8 in (73 mm)
E4-1/2 in (114) mm)
F22-9/16 in (573 mm)
G27 in (686 mm)
H30-3/8 in (772 mm)
J41-1/4 in (1048 mm)
K51-1/8 in (1299 mm)
L54 in (1372 mm)
21/32 in (16.7 mm) Dia.
M
N
1475 lb (670 kg)
4 Holes
1/2 in (12.7 mm) Dia.
10 Holes
Weight
M
J
H
M
D
A
B
G
F
E
Ref. 110 850-F
Do not exceed tilt angles or engine
could be damaged or unit could tip.
move or operate un
L
K
could tip.
30°
30°
ere
°
30°
angles 4/96
OM-480 Page 10
Page 15
4-3.Fuel Consumption
The curve shows typical fuel use
under weld or power loads.
4-4.Duty Cycle And Overheating
100% Duty Cycle At 250 Amperes
SB-137 487-A
Duty Cycle is percentage of 10 minutes that unit can weld at rated load
without overheating.
Exceeding duty cycle can
damage unit and void
warranty.
Continuous Welding
rduty1 5/95 − SB-070 999-B
OM-480 Page 11
Page 16
4-5.AC Generator Power
300
150
125
250
100
200
75
150
50
AC VOLTS
100
25
50
0
0
051015202530
0
102030405060
The ac power curve shows the generator power in amperes available
at the 120 and 240 volt receptacles.
AC AMPERES IN 240V MODE
AC AMPERES IN 120V MODE
4-6.Volt-Ampere Curves
100
80
60
VOLTS
40
20
0
0100200300400500600700
RANGES:MIN − 80
65 − 120
95 − 200
160 − 330
200 − MAX
rsb3.1 2/92 − 206 031
The volt-ampere curve shows the
minimum and maximum voltage
and amperage output capabilities of
the welding generator. Curves of all
other settings fall between the
curves shown.
OM-480 Page 12
AMPERES
206 033
Page 17
4-7.Optional AC Power Plant Curves
A. 7.5 KVA/KW Single-Phase AC Power Plant (No Weld Load)
The ac power curves show the generator power in amperes available
at the single-phase 120/240 volt or
three-phase 240 volt terminals.
B. 10 KVA/KW Three-Phase AC Power Plant (No Weld Load)
280
260
240
220
AC VOLTS
200
180
0 10203040506070
AC AMPERES
rsb13.1 12/94 - 134 636-A / 206 032
OM-480 Page 13
Page 18
SECTION 5 − INSTALLATION
5-1.Installing Welding Generator
MovementAirflow ClearanceLocation
Do Not Lift Unit From End
18 in
(460 mm)
OR
18 in
(460 mm)
18 in
(460 mm)
OR
Grounding
Electrically bond generator frame to
vehicle frame by metal-to-metal
contact.
Bed liners, shipping skids, and some running
gears insulate the welding generator from the
vehicle frame. Always connect a ground wire
from the generator equipment grounding terminal to bare metal on the vehicle frame as shown.
Check all fluids daily. Engine must be
cold and on a level surface.
Follow run-in procedure in engine
manual. If unburned fuel and oil collect in exhaust pipe during run-in, see
Section 10.
Fuel
Do not use gasoline. Gasoline
will damage engine.
Add fresh diesel fuel before starting
engine the first time (see maintenance label for specifications). Fill
fuel tank up to 1/2 in. (13 mm) from top
to allow room for expansion. Open
fuel shut-off valve.
Do not run out of fuel or air enters fuel
system and causes starting problems. See engine manual to bleed air
from fuel system.
Oil
After fueling, check oil with unit on level surface. If oil is not up to full mark on
dipstick, add oil (see maintenance label).
Your unit may have the optional
low oil pressure shutdown
switch. However, some conditions may cause engine damage
before the engine shuts down.
Check oil level often and do not
use the oil pressure shutdown
system to monitor oil level.
To improve cold weather starting:
Full
Keep battery in good condition.
Store battery in warm area.
Use fuel formulated for cold
weather (diesel fuel can gel in
cold weather). Contact local fuel
supplier for fuel information.
Weld Cable Size** and Total Cable (Copper) Length in Weld Circuit
Not Exceeding***
150 ft
(45 m)
200 ft
(60 m)
250 ft
(70 m)
300 ft
(90 m)
350 ft
(105 m)
60 − 100%
Duty
10 − 100% Duty Cycle
Cycle
400 ft
(120 m)
2502 (35)1 (50)1/0 (60)2/0 (70)3/0 (95)4/0 (120)
3001 (50)1/0 (60)2/0 (70)3/0 (95)4/0 (120)
3501/0 (60)2/0 (70)3/0 (95)4/0 (120)
4001/0 (60)2/0 (70)3/0 (95)4/0 (120)
5002/0 (70)3/0 (95)4/0 (120)
* This chart is a general guideline and may not suit all applications. If cable overheating occurs (normally you can smell it), use next size larger
cable.
**Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.
( ) = mm2 for metric useS-0007-E−
***For distances longer than those shown in this guide, call a factory applications representative at 920-735-4505.
2 ea. 2/0
(2x70)
2 ea. 2/0
(2x70)
2 ea. 2/0
(2x70)
2 ea. 3/0
(2x95)
2 ea. 2/0
(2x70)
2 ea. 3/0
(2x95)
2 ea. 3/0
(2x95)
2 ea. 4/0
(2x120)
2 ea. 2/0
(2x70)
2 ea. 3/0
(2x95)
2 ea. 3/0
(2x95)
2 ea. 4/0
(2x120)
3 ea. 3/0
(3x95)
2 ea. 2/0
(2x70)
2 ea. 3/0
(2x95)
2 ea. 4/0
(2x120)
2 ea. 4/0
(2x120)
3 ea. 3/0
(3x95)
OM-480 Page 17
Page 22
SECTION 6 − OPERATING THE WELDING GENERATOR
6-1.Controls (See Section 6-2)
1
2
13
12
11
10
3
4
89
67
5
OM-480 Page 18
15
14
Ref. 206 029 / 800 162-A / 800 159-D
Page 23
6-2.Description Of Front Panel Controls (See Section 6-1)
This unit has a max OCV control circuit
that resets the Amperage/Voltage Control to maximum when the arc breaks.
When a n arc is struck, weld output control
returns to the front panel or remote control setting. The Amperage/voltage Control adjusts amperage only when welding
and does not adjust open-circuit voltage.
1Ampere Range Switch
Use switch to select weld amperage range.
For most welding applications, use lowest
amperage range possible to prevent arc outages.
Do not switch under load.
2Amperage/Voltage Control
Control adjusts amperage within range
selected by Ampere Range switch. Weld output would be 148 A DC with controls set as
shown (50% of 95 to 200 A).
(See Section 6-3)
6Magnetic Shutdown Switch (Optional)
Use switch during start-up to bypass optional
engine shutdown system. System stops engine if oil pressure is too low or oil temperature
is too high.
7Engine Control Switch
To Start: turn switch to Start while pressing
Shutdown switch. Release switches when
engine starts.
If the engine does not start, let engine
come to a complete stop before attempt-
ing restart.
In Run position, engine runs at weld/power
speed. In Run/Idle position (optional), engine
runs at idle speed at no load and weld/power
speed with load applied.
To Stop: turn switch to Off position.
8Battery Charging Warning Light
Light goes on when battery is not charging.
9Oil Pressure Warning Light
Light goes on if oil pressure is too low. If unit
has automatic shutdown option, light also
goes on if oil temperature is too high.
Stop engine and fix trouble if either
light goes on.
10 Ether Starting Aid Switch (Optional)
Push switch up and release while cranking
engine to release ether.
Do not use Ether if engine is running.
11 Engine Hour Meter
12 Oil Temperature Gauge/Switch
(Optional)
13 Oil Pressure Gauge/Switch (Optional)
14 Polarity Switch (Optional)
Place switch in Straight position for electrode
negative, or Reverse position for electrode
positive.
15 Manual Shutoff Lever
Use lever to stop engine if engine control
switch does not work.
6-3.Remote A/V Control
1
Example: Combination Remote Amperage Control
1A/V Control Switch
Use switch to select front panel or
remote amperage control.
2Remote A/V Receptacle RC3
Connect optional remote control to
Receptacles supply 60 Hz singlephase power at weld/power speed.
4Circuit Breakers CB1 And
CB2
CB1 protects RC1/GFCI1 and CB2
protects RC2/GFCI2 from overload. If CB1 or CB2 opens, the
receptacle does not work.
If a circuit breaker continues to
open, contact Factory Authorized Service Agent.
If a ground fault is detected, GFCI
Reset button pops out and
receptacle does not work. Check
for faulty tools plugged in
receptacle. Press button to reset.
At least once a month, run en-
gine at weld/power speed and
press test button to verify GFCI
is working properly.
3
Maximum output from each duplex
receptacle is 1.8 kVA/kW, and 3
kVA/kW from all receptacles. Generator power is not affected by weld
output.
EXAMPLE: If 15 A is drawn from
RC1, only 10 A is available at RC2:
(120 V x 15 A) + (120 V x 10 A) = 3.0
kVA/kW
OM-480 Page 20
Ref. 206 029
Page 25
7-2.240 Volt Duplex Receptacle (Optional)
1
If unit does not have GFCI re-
ceptacles, use GFCI-protected extension cord.
1240 V 15 A AC Receptacle
RC1
Receptacle supplies 60 Hz singlephase power at weld/power speed.
Maximum output is 3 kVA/kW.
2Circuit Breakers CB1 And
CB2
CB1 and CB2 protect the
receptacles from overload. If CB1
or CB2 opens, the 240 V receptacle
and half of the 120 V receptacle
does not work. 120 volts may still be
present at the 240 V receptacle.
If a circuit breaker continues to
open, contact Factory Authorized Service Agent.
Combined output of all receptacles
is 3 kVA/kW. Generator power is
not affected by weld output.
EXAMPLE: If 10 A is drawn from the
240 V receptacle, only 5 A is available at the 120 V receptacle:
(240 V x 10 A) + (120 V x 5 A) = 3.0
kVA/kW
2
1
Ref. 206 029 / 174 408
OM-480 Page 21
Page 26
7-3.Connecting Optional AC Power Plant
14
13
F3
12
11
10
9
F2
F1
Stop engine.
Power and weld outputs are
live at the same time.
Disconnect or insulate
unused cables.
Have qualified person install
according to circuit diagram
and Generator Power Guidelines (Section 11).
6Grounding Terminal
7Jumper Lead 42
8Isolated Neutral Terminal
Jumper 42 is connected to lead 90
at factory. Jumper 42 may be disconnected from neutral to meet
applicable electrical codes.
9Lead 80
10 Receptacle RC9 leads
11 Lead 42
12 Lead 81
13 Lead 82
14 Load Terminals
Connect leads to terminals.
15 Fuses F1, F2, And F3
F1, F2, and F3 protect each load line
from overload.
Set Engine Control switch to
Run when using generator
power.
OM-480 Page 22
93
91
90
92
AC
Output
Volts
Amps
KVA/KW
Engine Speed
Max. Fuse Size35 Amperes
Lead 42 connects to GROUND stud on front of
unit.
Jumper 42 is connected to 90 at factory.
Single
Phase
1
120/240
31
7.5
1850 RPM
Three
Phase
3
240
24
10
60 HzFrequency
Tools Needed:
Ref. S-179 637-B
Page 27
7-4.120/240 Volt Twistlock Receptacle (Optional)
1
1120/240 V 50 A Twistlock Re-
ceptacle RC9
RC9 is connected to the optional ac
power plant and supplies 60 Hz
single-phase power at weld/power
speed. Maximum output from receptacle is 7.5 kVA/kW.
Power available at RC9 is reduced
when welding.
Fuses F1 and F2 protect RC9 from
overload (see Section 7-3). If a fuse
opens, the receptacle does not
work. 120 volts may still be present
at RC9.
801 057-A
OM-480 Page 23
Page 28
SECTION 8 − MAINTENANCE AND TROUBLESHOOTING
8-1.Routine Maintenance
Stop engine before maintaining.
See Engine Manual and Maintenance Label for impor-
tant start-up, service, and storage information. Service
Recycle engine
fluids.
Every 8 h
engine more often if used in severe conditions.
*To be done by Factory Authorized Service Agent.
Check air
cleaner hoses
for cracks and
loose clamps.
Wipe Up
Spills.
Check Fluid
Levels. See
Section 5-4.
FUEL
WATER
Every 50 h
Clean Air Filter.
See Section 8-3.
Every 100 h
Clean
Cooling
System.
Every 200 hEvery 250 h
Replace
Unreadable
Labels.
Drain Water
From Fuel
System. See
Section 8-4.
Clean And
Tighten Weld
Terminals.
Clean And
Tighten
Battery
Connections.
Check And
Clean Spark
Arrestor. See
Section 8-8.
OR
1/2 in.
(13 mm)
OM-480 Page 24
Change Oil. See
Section 8-4.
Blow Out Or
Vacuum Inside.
During Heavy
Service,
Clean Monthly.
Check
Belt
Tension.
FUEL
SLUDGE
Every 500 h
Change Oil
Filter. See
Section 8-4.
Every 1000 h
Change Fuel
Filters. See
Section 8-4.
Drain Sludge
Every 3000 h
Clean/Set
Injectors.*
From Fuel
Tank. See
Section 8-4.
Repair Or
Replace
Cracked
Cables.
Service Welding
Generator Brushes
And Slip Rings.
Service More Often
In Dirty Conditions.*
Check
Valve
Clearance.*
Page 29
NOTE
Follow the storage procedure in the engine owner’s manual if the unit will not be
used for an extended period.
8-2.Maintenance Label
OM-480 Page 25
Page 30
8-3.Servicing Air Cleaner
5
Keep nozzle
2 in (51 mm)
from element.
BlowInspect
Stop engine.
Do not run engine without air
cleaner or with dirty element. Engine damage caused by using a
damaged element is not covered
by the warranty.
The air cleaner primary element can
4
1
2
3
8
7
6
9
be cleaned but the dirt holding capacity of the filter is reduced with
each cleaning. The chance of dirt
reaching the clean side of the filter
while cleaning and the possibility of
filter damage makes cleaning a risk.
Consider the risk of unwarrantable
equipment damage when determining whether to clean or replace the
primary element.
If you decide to clean the primary
element, we strongly recommend
installing an optional safety element
to provide additional engine protection. Never clean a safety element.
Replace the safety element after
servicing the primary element three
times.
1Air Cleaner
2Service Indicator (Optional)
3Window
4Reset Button
Service air cleaner element if red band
appears in window. A green band means
air cleaner is okay. Press button to reset
indicator.
Clean or replace primary element if dirty
(see note above before cleaning). Re-place primary element if damaged. Replace primary element yearly or after six
cleanings.
5Housing
6Safety Element (Optional)
7Primary Element
8Cover
9Dust Ejector
To clean air filter:
Wipe off cover and housing. Remove
cover and dump out dust. Remove
element(s). Wipe dust from inside cover
and housing with damp cloth. Reinstall
safety element (if present). Reinstall
cover.
Do not clean housing with air
hose.
Clean primary element with compressed
air only.
Air pressure must not exceed 100 psi
(690 kPa). Use 1/8 in (3 mm) nozzle and
keep nozzle at least 2 in (51 mm) from
inside of element. Replace primary element if it has holes or damaged gaskets.
Reinstall primary element and cover
(dust ejector down).
OM-480 Page 26
aircleaner4 9/02− 802 495 / Ref. S-0698-B
Page 31
8-4.Servicing Fuel And Lubrication Systems
9
16
Stop engine and let cool.
1 Oil Filter
2Oil Drain Plug
3Oil Fill Cap
4Primary Fuel Filter (Fuel/
Water Separator)
5Petcock
6Secondary Fuel Filter
7Fuel Shutoff Valve
8Fuel Line
9Sludge Drain Plug
To change oil and filter:
See engine manual.
To drain water from fuel system:
Open primary fuel filter petcock and
drain water into metal container.
Close petcock when water-free fuel
flows.
To replace primary fuel filter:
Close shutoff valve and turn filter
counterclockwise. Remove filter.
Apply thin coat of fuel to gasket on
new filter. Install new filter and turn
clockwise. Open shutoff valve.
Bleed air from fuel system according to engine manual.
Inspect fuel line, and replace if
cracked or worn.
To replace secondary fuel filter:
See engine manual.
To drain sludge from fuel tank:
Put metal container under drain,
and remove sludge drain plug. Reinstall plug when done.
3
After servicing, start engine
and check for fuel leaks.
Stop engine, tighten connec-
tions as necessary, and wipe
up spilled fuel.
Close doors.
7
Valve Open
Tools Needed:
8
7/16, 11/16 in
2
4
5
Ref. 800 159-E / Ref. 206 029
OM-480 Page 27
Page 32
8-5.Adjusting Engine Speed
Standard Models
1850 rpm
(61.6 Hz)
1250 rpm
(41.5 Hz)
After tuning engine, check engine
no load speed with a tachometer
(see table for no load speeds). If
necessary, adjust speed as follows:
Start engine and run until warm.
Turn Amperage/Voltage Control to
100.
Standard Models:
1Engine Speed Adjustment
Screw
2Locking Nut
Loosen nut. Turn screw until engine
runs at 1850 rpm. Tighten nut.
Models With Automatic Idle
(Optional)
3Throttle Rod
4Locknut
Loosen locknuts. Place engine
control switch in Run/Idle position.
Turn throttle rod until engine runs at
MS1 (Optional)
2Fuse F (See Parts List)
Fuse F protects magnetic shut-
down switch MS1. If fuse F opens,
the engine stops.
3Throttle Solenoid Fuse F4
(Optional)
Fuse F4 protects the throttle sole-
noid from overload on models with
automatic idle option. If fuse F4
opens, the engine does not run at
idle speed.
Check fuses and replace if open.
1
2
8-7.Servicing Optional Ether Starting Aid
3
(935 g)(425 g)
15 oz33 oz
3
Tools Needed:
Ref. 156 199-B / 801 320-B
Stop engine.
Improper handling or expo-
sure to ether can harm your
health. Follow manufactur-
er’s safety instructions on
cylinder.
If engine does not start in cold
1
weather, check ether cylinder as
follows:
Remove cylinder from valve.
1Ether Cylinder
2Valve
3Scale
Weigh cylinder to see if it is empty.
Be sure atomizer is not plugged and
valve fitting is clean.
Replace cylinder according to
Section 5-5.
EmptyFull
2
ether2 7/96 − 153 382-A / S-0692
OM-480 Page 29
Page 34
8-8.Inspecting And Cleaning Optional Spark Arrestor
3
2
Tools Needed:
3/8 in
1
8-9.Troubleshooting
Stop engine and let cool.
1Spark Arrestor
2Cleanout Plug
Remove plug and remove any dirt
covering cleanout hole.
3Exhaust Pipe
Start engine and run at idle speed to
blow out cleanout hole. If nothing
blows out of hole, briefly cover end
of exhaust pipe with fireproof
material.
Stop engine and let cool.
Reinstall cleanout plug.
800 523 / Ref. 206 029
A. Welding
TroubleRemedy
No weld output.Check position of Ampere Range switch.
Check position of optional Polarity switch.
Place A/V control switch in Panel position, or place switch in Remote position and connect Remote Amperage control to Remote A/V receptacle RC3 (see Section 6-3).
Check and secure connections to Remote A/V receptacle RC3.
Disconnect equipment from generator power receptacles during start-up.
Have Factory Authorized Service Agent check brushes and slip rings, and field excitation circuit.
Be sure connection to work piece is clean and tight.
Remove excessive coils from weld cables.
Check and tighten connections both inside and outside unit.
Have Factory Authorized Service Agent check brushes and slip rings, and field excitation circuit.
Low or high weld output.Check control settings.
Check engine speed, and adjust if necessary (see Section 8-5).
Low open-circuit voltage.
Check engine speed, and adjust if necessary (see Section 8-5).
Maximum weld output only in each ampere range.
OM-480 Page 30
Have Factory Authorized Service Agent check integrated rectifier SR2, Amperage/Voltage control R1,
and resistor R2.
Have Factory Authorized Service Agent check Amperage/Voltage control R1, capacitor C8, diode D8,
integrated rectifier SR4, and control relay CR2.
Page 35
B. Generator Power
TroubleRemedy
No output at generator power
receptacles.
Low or high output at generator power
receptacles.
Low output at optional ac power plant
junction box, or receptacle RC9.
No output from optional ac power plant;
weld output and standard generator
power receptacle output okay.
C. Engine
Reset circuit breaker CB1 and/or CB2 (see Section 7-1 or 7-2).
Disconnect equipment from generator power receptacles during start-up.
Have Factory Authorized Service Agent check brushes and slip rings, and field excitation circuit.
Check engine speed, and adjust if necessary (see Section 8-5).
Check engine speed, and adjust if necessary (see Section 8-5).
If optional remote device is being used, set A/V Control switch in Remote position and remote device at
maximum (see Section 6-3).
If optional remote device not being used, set A/V Control switch in Panel position (see Section 6-3).
Check and replace fuses F1, F2, and/or F3, if necessary (see Section 7-3).
Have Factory Authorized Service Agent check brushes and slip rings.
Check connections to ac power plant (see Section 7-3).
Check fuses F1, F2, and F3 and replace if necessary (see Section 7-3).
TroubleRemedy
Engine does not start.Check fuel level. Open fuel valve (see Section 5-4).
Check optional Magnetic Shutdown switch fuse F and replace if open (see Section 8-6).
Check battery and replace if necessary.
Check connections to Engine Control switch.
Check oil level. Optional automatic shutdown system stops engine if oil pressure gets too low or oil
temperature gets too high.
See engine manual.
Have Factory Authorized Service Agent check engine charging system.
Engine suddenly stops.Check oil level. Optional automatic shutdown system stops engine if oil pressure gets too low or oil
Engine slowly stopped; unable to restart
engine.
Engine does not stop when Engine Control switch is placed in Off position.
Engine remains at idle speed when
Engine Control switch is placed in Run/
Idle position and an arc is struck (models
with automatic idle option only.)
Engine will not run at idle speed. (models
with automatic idle option only.)
Battery discharges between uses.Make sure Engine Control switch is in Off position when unit is shut down.
Engine uses oil during run-in period;
wetstacking occurs.
temperature gets too high.
Check optional Magnetic Shutdown switch fuse F and replace if open (see Section 8-6).
Check fuel level. Open fuel valve (see Section 5-4).
Use manual shutoff lever to stop engine (see Section 6-1). Check connections to Engine Control switch.
Have Factory Authorized Service Agent check engine fuel solenoid.
Have Factory Authorized Service Agent check Engine Control switch and idle module.
Check throttle solenoid fuse F4, and replace if open (see Section 8-6).
Have Factory Authorized Service Agent check Engine Control switch and idle module.
Clean battery, terminals, and posts with baking soda and water solution; rinse with clear water.
Periodically recharge battery (approximately every three months).
Replace battery.
Dry engine (see Section 10).
See engine manual.
OM-480 Page 31
Page 36
SECTION 9 − ELECTRICAL DIAGRAM
OM-480 Page 32
SC-190 650-B
Figure 9-1. Circuit Diagram For Welding Generator
Page 37
10-1. Wetstacking
1
SECTION 10 − RUN-IN PROCEDURE
Do not perform run-in
procedure at less than 20
volts weld output and do not
exceed duty cycle or equip-
ment damage may occur.
1Welding Generator
2
Run diesel engines near rated voltage and current during run-in period
to properly seat piston rings and
prevent wetstacking. See nameplate, rating label, or specifications
section in this manual to find rated
voltage and current.
Do not idle engine longer than
necessary. Piston rings seat
faster if engine runs at weld/
power rpm, and the welding
generator is kept loaded during
run-in.
2Engine Exhaust Pipe
Wetstacking is unburned fuel and
oil in the exhaust pipe and occurs
during run-in if the engine is run too
long at light load or idle rpm.
If exhaust pipe is coated with a wet,
black, tar-like substance, dry the
engine using one of the following
run-in procedures.
See the engine manual for additional engine run-in information.
run_in1 8/01
OM-480 Page 33
Page 38
10-2. Run-In Procedure Using Load Bank
4
2
3
Stop engine.
Do not touch hot exhaust
pipe, engine parts, or load
bank/grid.
Keep exhaust and pipe away
from flammables.
Do not perform run-in
procedure at less than 20
1
volts weld output and do not
exceed duty cycle or equip-
ment damage may occur.
1Load Bank
Turn all load bank switches Off. If
needed, connect load bank to 115
volts ac wall receptacle or generator auxiliary power receptacle.
2Welding Generator
Place A/V range switch in maxi-
mum position, A/V control in minimum position, and Output Selector
switch (if present) in either DC
position.
3Weld Cables
Connect load bank to generator
weld output terminals using proper
size weld cables with correct
connectors. Observe correct
polarity.
Start engine and run for several
minutes.
Set load bank switches and then
adjust generator A/V control so load
equals rated voltage and current of
generator (see nameplate, rating
label, or the specifications section
in this manual).
Check generator and load bank
meters after first five minutes then
every fifteen minutes to be sure
generator is loaded properly.
Check oil level frequently dur-
ing run-in; add oil if needed.
After one hour (minimum) place A/V
control in minimum position, then
turn off load bank to remove load.
Run engine several minutes at no
load.
Stop engine and let cool.
4Engine Exhaust Pipe
Repeat procedure if wetstacking is
present.
OM-480 Page 34
S-0683
Page 39
10-3. Run-In Procedure Using Resistance Grid
6
2
3
4
+
5
Stop engine.
Do not touch hot exhaust
pipe, engine parts, or load
bank/grid.
Keep exhaust and pipe away
from flammables.
Do not perform run-in
procedure at less than 20
volts weld output and do not
exceed duty cycle or equip-
ment damage may occur.
1Resistance Grid
Use grid sized for generator rated
output.
1
Turn Off grid.
2Welding Generator
Place A/V range switch in maximum position, A/V control in minimum position, and Output Selector
switch (if present) in either DC
position.
3Weld Cables
Connect grid to generator weld
output terminals using proper size
weld cables with correct connectors (polarity is not important).
4Voltmeter
5Clamp-On Ammeter
Connect voltmeter and ammeter as
shown, if not provided on generator.
Start engine and run for several
minutes.
Set grid switches and then adjust
generator A/V control so load
equals rated voltage and current of
the generator (see nameplate, rating label, or the specifications section in this manual).
Check generator and meters after
first five minutes then every fifteen
minutes to be sure generator is
loaded properly.
Check oil level frequently dur-
ing run-in; add oil if needed.
After one hour (minimum), place
A/V control in minimum position,
then shut down grid to remove load.
Run engine several minutes at no
load.
Stop engine and let cool.
6Engine Exhaust Pipe
Repeat procedure if wetstacking is
present.
S-0684
OM-480 Page 35
Page 40
SECTION 11 − GENERATOR POWER GUIDELINES
NOTE
The views in this section are intended to be representative of all engine-driven
welding generators. Your unit may differ from those shown.
11-1. Selecting Equipment
1
1Generator Power Receptacles
− Neutral Bonded To Frame
23-Prong Plug From Case
Grounded Equipment
32-Prong Plug From Double
Insulated Equipment
Do not use 2-prong plug un-
less equipment is double insulated.
2
3
OR
11-2. Grounding Generator To Truck Or Trailer Frame
1
GND/PE
2
Be sure equipment
has this symbol
and/or wording.
3
gen_pwr 11/02 − Ref. ST-159 730 / ST-800 577
Always ground generator
frame to vehicle frame to pre-
vent electric shock and static
electricity hazards.
1Equipment Grounding
Terminal (On Front Panel)
2Grounding Cable (Not
Supplied)
3Metal Vehicle Frame
Connect cable from equipment
ground terminal to metal vehicle
frame. Use #10 AWG or larger
insulated copper wire.
If unit does not have GFCI re-
ceptacles, use GFCI-pro-
tected extension cord.
OM-480 Page 36
Electrically bond generator
frame to vehicle frame by
metal-to-metal contact.
Bed liners, shipping skids, and some running
gear insulate the welding generator from the vehicle frame. Always connect a ground wire from
the generator equipment grounding terminal to
bare metal on the vehicle frame as shown.
S-0854
Page 41
11-3. Grounding When Supplying Building Systems
12
GND/PE
Use ground device as stated
2
3
in electrical codes.
1Equipment Grounding
Terminal
2Grounding Cable
Use #10 AWG or larger insulated
copper wire.
3Ground Device
Ground generator to system
earth ground if supplying
power to a premises (home,
shop, farm) wiring system.
11-4. How Much Power Does Equipment Require?
3
2
1
3
AMPERES x VOLTS = WATTS
EXAMPLE 1: If a drill uses 4.5 amperes at 115 volts, calculate its running power
requirement in watts.
4.5 A x 115 V = 520 W
The load applied by the drill is 520 watts.
VOLTS 115
AMPS
Hz
4.5
60
ST-800 576-B
1Resistive Load
A light bulb is a resistive load and
requires a constant amount of power.
2Non-Resistive Load
Equipment with a motor is a non-re-
sistive load and requires approximately six times more power while
starting the motor than when running
(see Section 11-8).
3Rating Data
Rating shows volts and amperes, or
watts required to run equipment.
EXAMPLE 2: If three 200 watt flood lamps are used with the drill from Example 1,
add the individual loads to calculate total load.
(200 W + 200 W + 200 W) + 520 W = 1120 W
The total load applied by the three flood lamps and drill is 1120 watts.
S-0623
OM-480 Page 37
Page 42
11-5. Approximate Power Requirements For Industrial Motors
Single-Phase Induction Motor Starting Requirements
Motor Start
CodeGHJ KLMNP
KVA/HP6.37.18.09.010.011.212.514.0
kVA/HP x HP x 1000
VOLTS
EXAMPLE: Calculate the starting amperage required for a 230 V, 1/4
HP motor with a motor start code of M.
Volts = 230 HP = 1/4 Using Table, Code M results in kVA/HP = 11.2
11.2 x 1/4 x 1000
230
= 12.2 A
VOLTSAMPS
CODE60
HP
Starting the motor requires 12.2 amperes.
AC MOTOR
2302.5
M
1/4
= STARTING AMPERAGE
Hz
PHASE
1
2
1Motor Start Code
2Running Amperage
3Motor HP
4Motor Voltage
To find starting amperage:
Step 1: Find code and use table to
find kVA/HP. If code is not listed,
multiply running amperage by six to
find starting amperage.
Step 2: Find Motor HP and Volts.
Step 3: Determine starting amper-
age (see example).
Welding generator amperage out-
put must be at least twice the
motor’s running amperage.
S-0624
11-9. How Much Power Can Generator Supply?
1
2
1Limit Load To 90% Of
Generator Output
Always start non-resistive (motor)
loads in order from largest to smallest, and add resistive loads last.
25 Second Rule
If motor does not start within 5
seconds, turn off power to prevent
motor damage. Motor requires
more power than generator can
supply.
OM-480 Page 40
Ref. ST-800 396-A / S-0625
Page 45
11-10. Typical Connections To Supply Standby Power
Properly install and ground this equipment according to
its Owner’s Manual and national, state, and local codes.
1234
Utility
Electrical
Service
Transfer Switch
5
Essential
Loads
Fused
Disconnect
Switch
(If Required)
Welding
Generator
Output
Have only qualified persons perform
these connections according to all
applicable codes and safety practices.
Properly install and ground this
equipment according to its Owner’s
Manual and national, state, and local
codes.
Customer-supplied equipment is re-
quired if generator will supply standby
power during emergencies or power outages.
1 Utility Electrical Service
2 Transfer Switch (Double-Throw)
Notes
Switch transfers the electrical load from
electric utility service to the generator. Transfer load back to electric utility when service is
restored.
Install correct switch (customer-supplied).
Switch rating must be same as or greater
than the branch overcurrent protection.
3 Fused Disconnect Switch
Install correct switch (customer-supplied) if
required by electrical code.
4 Welding Generator Output
Generator output voltage and wiring must be
consistent with regular (utility) system voltage and wiring.
Connect generator with temporary or permanent wiring suitable for the installation.
Turn off or unplug all equipment connected to
generator before starting or stopping engine.
When starting or stopping, the engine has
low speed which causes low voltage and
frequency.
5 Essential Loads
Generator output may not meet the electrical
requirements of the premises. If generator
does not produce enough output to meet all
requirements, connect only essential loads
(pumps, freezers, heaters, etc. − See Section 11-4).
♦OPTIONAL
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
*Recommended Spare Parts.
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.
Item
No.
Dia.
Mkgs.
Part
No.
Description
Quantity
Figure 12-2. Panel, Front w/Components (Fig 12-1 Item 111)
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.
♦OPTIONAL
*Recommended Spare Parts.
+When ordering a component originally displaying a precautionary label, the label should also be ordered.
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
OM-480 Page 51
Page 56
Item
No.
Part
No.
DescriptionQuantity
114 193Figure 12-4. Switch, Range (Fig 12-2 Item 1)
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-480 Page 52
Page 57
Page 58
Page 59
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, 2005
(Equipment with a serial number preface of “LF” or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other
LIMITED WARRANTY − Subject to the terms and conditions
below, Miller Electric Mfg. Co., Appleton, Wisconsin, warrants to
its original retail purchaser that new Miller equipment sold after
the effective date of this limited warranty is free of defects in
material and workmanship at the time it is shipped by Miller.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
Within the warranty periods listed below, Miller will repair or
replace any warranted parts or components that fail due to such
defects in material or workmanship. Miller must be notified in
writing within thirty (30) days of such defect or failure, at which
time Miller will provide instructions on the warranty claim
procedures to be followed.
Miller shall honor warranty claims on warranted equipment
listed below in the event of such a failure within the warranty
time periods. All warranty time periods start on the date that the
equipment was delivered to the original retail purchaser, or one
year after the equipment is sent to a North American distributor
or eighteen months after the equipment is sent to an
International distributor.
1. 5 Years Parts — 3 Years Labor
* Original main power rectifiers
* Inverters (input and output rectifiers only)
2. 3 Years — Parts and Labor
* Transformer/Rectifier Power Sources
* Plasma Arc Cutting Power Sources
* Semi-Automatic and Automatic Wire Feeders
* Inverter Power Sources (Unless Otherwise Stated)
(NOTE: Engines are warranted separately by
the engine manufacturer.)
3. 1 Year — Parts and Labor Unless Specified
* DS-2 Wire Feeder
* Motor Driven Guns (w/exception of Spoolmate
Spoolguns)
* Process Controllers
* Positioners and Controllers
* Automatic Motion Devices
* RFCS Foot Controls
* Induction Heating Power Sources and Coolers
* Water Coolant Systems (Non-Integrated)
* Flowgauge and Flowmeter Regulators (No Labor)
* HF Units
* Grids
* Maxstar 85, 140
* Spot Welders
* Load Banks
* Arc Stud Power Sources & Arc Stud Guns
* Racks
* Running Gear/Trailers
* Plasma Cutting Torches (except APT & SAF
Models)
* Field Options
(NOTE: Field options are covered under True
Bluefor the remaining warranty period of the
product they are installed in, or for a minimum of
one year — whichever is greater.)
4. 6 Months — Batteries
5. 90 Days — Parts
* MIG Guns/TIG Torches
guarantees or warranties expressed or implied.
* Induction Heating Coils and Blankets
* APT & SAF Model Plasma Cutting Torches
* Remote Controls
* Accessory Kits
* Replacement Parts (No labor)
* Spoolmate Spoolguns
* Canvas Covers
Miller’s True Blue Limited Warranty shall not apply to:
1. Consumable components; such as contact tips,
cutting nozzles, contactors, brushes, slip rings,
relays or parts that fail due to normal wear. (Exception:
brushes, slip rings, and relays are covered on Bobcat,
Trailblazer, and Legend models.)
2. Items furnished by Miller, but manufactured by others,
such as engines or trade accessories. These items are
covered by the manufacturer’s warranty, if any.
3. Equipment that has been modified by any party other than
Miller, or equipment that has been improperly installed,
improperly operated or misused based upon industry
standards, or equipment which has not had reasonable
and necessary maintenance, or equipment which has
been used for operation outside of the specifications for the
equipment.
MILLER PRODUCTS ARE INTENDED FOR PURCHASE AND
USE BY COMMERCIAL/INDUSTRIAL USERS AND
PERSONS TRAINED AND EXPERIENCED IN THE USE AND
MAINTENANCE OF WELDING EQUIPMENT.
In the event of a warranty claim covered by this warranty, the
exclusive remedies shall be, at Miller’s option: (1) repair; or (2)
replacement; or, where authorized in writing by Miller in
appropriate cases, (3) the reasonable cost of repair or
replacement at an authorized Miller service station; or (4)
payment of or credit for the purchase price (less reasonable
depreciation based upon actual use) upon return of the goods at
customer’s risk and expense. Miller’s option of repair or
replacement will be F.O.B., Factory at Appleton, Wisconsin, or
F.O.B. at a Miller authorized service facility as determined by
Miller. Therefore no compensation or reimbursement for
transportation costs of any kind will be allowed.
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR
ANY OTHER LEGAL THEORY.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND
ANY IMPLIED WARRANTY, GUARANTY OR
REPRESENTATION AS TO PERFORMANCE, AND ANY
REMEDY FOR BREACH OF CONTRACT TORT OR ANY
OTHER LEGAL THEORY WHICH, BUT FOR THIS
PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION
OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING,
INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT
FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED
BY MILLER.
Some states in the U.S.A. do not allow limitations of how long an
implied warranty lasts, or the exclusion of incidental, indirect,
special or consequential damages, so the above limitation or
exclusion may not apply to you. This warranty provides specific
legal rights, and other rights may be available, but may vary
from state to state.
In Canada, legislation in some provinces provides for certain
additional warranties or remedies other than as stated herein,
and to the extent that they may not be waived, the limitations
and exclusions set out above may not apply. This Limited
Warranty provides specific legal rights, and other rights may be
available, but may vary from province to province.
miller_warr 1/05
Page 60
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
For Service
Contact 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
To locate a Distributor or Service Agency visit
www.millerwelds.com or call 1-800-4-A-Miller
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
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 2005 Miller Electric Mfg. Co. 1/05
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