Page 1
OM-2224 191 802D
April 2001
Processes
Stick (SMAW) Welding
TIG (GTAW) Welding
Description
Arc Welding Power Source
R
Maxstar 140 STR
R
With Auto-Link And
Remote Receptacle
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
Miller is the first welding
equipment manufacturer in
the U.S.A. to be registered to
the ISO 9001 Quality System
Standard.
Miller Electric manufactures a full line
of welders and welding related equipment.
For information on other quality Miller
products, contact your local Miller distributor
to receive the latest full line catalog or
individual catalog sheets. To locate your nearest
distributor call 1-800-4-A-Miller, or visit us at
www.MillerWelds.com on the web.
figure out what the problem is. The parts list
will then help you to decide which 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 offers a Technical
Manual which provides
more detailed service and
parts information for your
unit. T o obtain a Technical
Manual, contact your local
distributor. Your distributor
can also supply you with
Welding Process Manuals
such as SMAW, GTAW,
GMAW, and GMA W-P.
Page 3
WARNING
This product, when used
for welding or cutting,
produces fumes or
gases which contain
chemicals known to the
State of California to
cause birth defects and,
in some cases, cancer.
(California Health &
Safety Code Section
25249.5 et seq.)
The following terms are
used interchangeably
throughout this manual:
TIG = GTA W
Stick = SMAW
TABLE OF CONTENTS
SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1. Symbol Usage 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. Arc Welding Hazards 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3. Additional Symbols For Installation, Operation, And Maintenance 3. . . . . . . . . . . . . . . . . . . . .
1-4. Principal Safety Standards 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5. EMF Information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION 5. . . . . . . . . . . . . . . . . . . . .
1-1. Signification des symboles 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. Dangers relatifs au soudage à l’arc 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement
et la maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4. Principales normes de sécurité 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5. Information sur les champs électromagnétiques 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 – SPECIFICATIONS AND INSTALLA TION 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1. Specifications 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2. Description 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3. Included with Your Unit (Stick Only) 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4. Included with Your Unit (TIG / Stick) 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5. Duty Cycle And Overheating 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6. Volt-Ampere Curves 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7. Selecting A Location 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-8. Typical Connection Methods 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-9. Connecting To Weld Output Receptacles 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-10. Connecting Remote Control To Remote Receptacle 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-11. Rear Panel And Power Switch 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-12. Connecting Input Power 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-13. Selecting Extension Cord 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-14. Installing 230 Volts Ac Input Power Cord 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-15. Remote Receptacle Information 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 – OPERATION 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1. Front Panel Controls 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2. Lift-Arct TIG Procedure 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 – MAINTENANCE AND TROUBLESHOOTING 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1. Routine Maintenance 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2. Blowing Out Inside Of Unit 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-3. Troubleshooting 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 – ELECTRICAL DIAGRAM 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 – STICK WELDING (SMAW) GUIDELINES 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 7 – SELECTING AND PREPARING
TUNGSTEN ELECTRODE 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1. Selecting Tungsten Electrode 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-2. Safety Information About Tungsten 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-3. Preparing Tungsten For DC Electrode Negative (DCEN) Welding 33. . . . . . . . . . . . . . . . . . . . .
SECTION 8 – GUIDELINES FOR TIG WELDING (GTAW) 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8-1. Positioning The Torch 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8-2. Torch Movement During Welding 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8-3. Positioning Torch Tungsten For Various Weld Joints 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 9 – PARTS LIST 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 4
Page 5
SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING
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 _nd_4/98
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 1-4. 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 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.
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.
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 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 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 after removal of
input power on inverters.
D Turn Off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
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 exhaust at the arc to remove
welding fumes and gases.
D If ventilation is poor, use an approved air-supplied respirator.
D Read the Material Safety Data Sheets (MSDSs) and the
manufacturer’s instructions for metals, consumables, coatings,
cleaners, and degreasers.
D Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding fumes and gases can displace air and
lower th e 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 if necessary, while wearing an
air-supplied respirator. The coatings and any metals containing
these elements can give off toxic fumes if welded.
OM-2224 Page 1
Page 6
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 a welding helmet fitted with a proper shade of filter to protect
your face and eyes when welding or watching (see ANSI Z49.1
and Z87.1 listed in Safety Standards).
D Wear approved safety glasses with side shields under your
helmet.
D Use protective screens or barriers to protect others from flash and
glare; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant mate-
rial (leather and 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 Protect yourself and others from flying sparks and hot metal.
D Do not weld where flying sparks can strike flammable material.
D Remove all flammables within 35 ft (10.7 m) of the welding arc. If
this is not possible, tightly cover them with approved covers.
D Be alert that welding sparks and hot materials from welding can
easily go through small cracks and openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that welding on a ceiling, floor, bulkhead, or partition can
cause fire on the hidden side.
D Do not weld on closed containers such as tanks, drums, or pipes,
unless they are properly prepared according to AWS F4.1 (see
Safety Standards).
D Connect work cable to the work as close to the welding area as
practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock and fire hazards.
D Do not use welder to thaw frozen pipes.
D Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
D Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding.
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.
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, 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 Read and follow instructions on compressed gas cylinders,
associated equipment, and CGA publication P-1 listed in Safety
Standards.
OM-2224 Page 2
Page 7
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.
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.
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.
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.
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. Principal Safety Standards
Safety in Welding and Cutting, ANSI Standard Z49.1, from American
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126
Safety and Health Standards, OSHA 29 CFR 1910, from Superintendent of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers That Have Held Hazardous Substances, American
Welding Society Standard AWS F4.1, from American W elding Society,
550 N.W. LeJeune Rd, Miami, FL 33126
National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
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 t o 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.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.
Code for Safety in Welding and Cutting, CSA Standard W117.2, from
Canadian Standards Association, Standards Sales, 178 Rexdale
Boulevard, Rexdale, Ontario, Canada M9W 1R3.
Safe Practices For Occupation And Educational Eye And Face
Protection, ANSI Standard Z87.1, from American National Standards
Institute, 1430 Broadway, New York, NY 10018.
Cutting And Welding Processes, NFPA Standard 51B, from National
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
OM-2224 Page 3
Page 8
1-5. EMF Information
Considerations About Welding And The Effects Of Low Frequency
Electric And Ma g netic 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 power-
frequency 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:
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-2224 Page 4
Page 9
SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT
UTILISATION
1-1. Signification des symboles
Signifie Mise en garde ! Soyez vigilant ! Cette procédure
présente des risques de danger ! Ceux-ci sont identifiés
par des symboles adjacents aux directives.
Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des
Y Identifie un message de sécurité particulier.
. Signifie NOTA ; n’est pas relatif à la sécurité.
1-2. Dangers relatifs au soudage à l’arc
risques de danger reliés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN
MOUVEMENT et aux PIÈCES CHAUDES. Reportez-vous aux symboles
et aux directives ci-dessous afin de connaître les mesures à prendre pour
éviter tout danger.
som _nd_fre 5/97
Y Les symboles présentés ci-après sont utilisés tout au long du
présent manuel pour attirer votre attention et identifier les risques
de danger. Lorsque vous voyez un symbole, soyez vigilant et
suivez les directives mentionnées afin d’éviter tout danger. Les
consignes de sécurité présentées ci-après ne font que résumer
l’information contenue dans les normes de sécurité énumérées
à la section 1-4. Veuillez lire et respecter toutes ces normes de
sécurité.
Y L’installation, l’utilisation, l’entretien et les réparations ne doi-
vent être confiés qu’à des personnes qualifiées.
Y Au cours de l’utilisation, tenir toute personne à l’écart et plus par-
ticulièrement 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
tension à ce moment-là. En soudage semi-automatique ou automatique,
le fil, le dévidoir, le logement des galets d’entraînement et les pièces
métalliques en contact avec le fil de soudage sont sous tension. Des
matériels mal installés ou mal mis à la terre présentent un danger.
D Ne jamais toucher les pièces électriques sous tension.
D Porter des gants et des vêtements de protection secs ne comportant
pas de trous.
D S’isoler de la pièce et de la terre au moyen de tapis ou d’autres
moyens isolants suffisamment grands pour empêcher le contact physique éventuel avec la pièce ou la terre.
D Ne pas se servir de source électrique àcourant électrique dans les zones
humides, dans les endroits confinés ou là où on risque de tomber.
D Se servir d’une source électrique àcourant électrique UNIQUEMENT si le
procédé de soudage le demande.
D 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.
D Couper l’alimentation ou arrêter le moteur avant de procéder à l’instal-
lation, à la réparation ou à l’entretien de l’appareil. Déverrouiller
l’alimentation selon la norme OSHA 29 CFR 1910.147 (voir normes de
sécurité).
D Installer et mettre à la terre correctement cet appareil conformément à
son manuel d’utilisation et aux codes nationaux, provinciaux et
municipaux.
D Toujours v érifier la terre du cordon d’alimentation – Vérifier et s’assu-
rer que le fil de terre du cordon d’alimentation est bien raccordé à la
borne de terre du sectionneur ou que la fiche du cordon est raccordée
à une prise correctement mise à la terre.
D En effectuant les raccordements d’entrée fixer d’abord le conducteur
de mise à la terre approprié et contre-vérifier les connexions.
D Vérifier fréquemment le cordon d’alimentation pour voir s’il n’est pas
endommagé ou dénudé – remplacer le cordon immédiatement s’il est
endommagé – un câble dénudé peut provoquer une électrocution.
D Mettre l’appareil hors tension quand on ne l’utilise pas.
D Ne pas utiliser des câbles usés, endommagés, de grosseur insuffi-
sante 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 – ne pas utiliser le connecteur de pièce ou le câble de
retour.
circuits internes de l’appareil sont également sous
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 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 quand on travaille en hauteur.
D Maintenir solidement en place tous les panneaux et capots.
D Fixer le câble de retour de façon à obtenir un bon contact métal-métal
avec la pièce à souder ou la table de travail, le plus près possible de l a
soudure.
D Isoler la pince de masse quand pas mis à la pièce pour éviter le contact
avec tout objet métallique.
Il y a DU COURANT CONTINU IMPORT ANT dans les
convertisseurs après la suppression de l’alimenta-
tion électrique.
D Arrêter les convertisseurs, débrancher le courant électrique, et dé-
charger 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 dangereux pour votre santé.
D Eloigner votre tête des fumées. Ne pas respirer
D A l’intérieur, ventiler la zone et/ou utiliser un échappement au niveau
de l’arc pour l’évacuation des fumées et des gaz de soudage.
D Si la ventilation est insuffisante, utiliser un respirateur à alimenta-
tion d’air homologué.
D Lire les spécifications de sécurité des matériaux (MSDSs) et les
instructions du fabricant concernant les métaux, les consommables, les revêtements, les nettoyants et les dégraisseurs.
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
dégraissage, de nettoyage ou de pulvérisation. La chaleur et les
rayons de l ’arc peuvent réagir en présence de vapeurs et former des
gaz hautement toxiques et irritants.
D Ne pas souder des métaux munis d’un revêtement, tels que l’acier
galvanisé, plaqué en plomb ou au cadmium à moins que le revêtement n’ait été enlevé dans la zone de soudure, que l’endroit soit bien
ventilé, et si nécessaire, en portant un respirateur à alimentation
d’air. Les revêtements et tous les métaux renfermant ces éléments
peuvent dégager des fumées toxiques en cas de soudage.
les fumées.
OM-2224 Page 5
Page 10
LES RAYONS DE L ’ARC peuvent pro-
voquer des brûlures dans les yeux et
sur la peau.
Le rayonnement de l’arc du procédé de soudage
génère des rayons visibles et invisibles intenses
des brûlures dans les yeux et sur la peau. Des étincelles sont projetées
pendant le soudage.
D Porter un casque de soudage muni d’un écran de filtre approprié pour
protéger votre visage et vos yeux pendant le soudage ou pour regarder (voir ANSI Z49.1 et Z87.1 énuméré dans les normes de sécurité).
D Porter des protections approuvés pour les oreilles si le niveau sondre est
trop élevé.
D Utiliser des écrans ou des barrières pour protéger des tiers de l’éclair
et de l’éblouissement; demander aux autres personnes de ne pas regarder l’arc.
D Porter des vêtements de protection constitué dans une matière dura-
ble, résistant au feu (cuir ou laine) et une protection des pieds.
(ultraviolets et infrarouges) susceptibles de provoquer
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 confinés ou se servir d’un respi-
rateur d’adduction d’air homologué.
DES PIÈCES CHAUDES peuvent provoquer des brûlures graves.
D Ne pas toucher des parties chaudes à mains nues
D Prévoir une période de refroidissement avant
d’utiliser le pistolet ou la torche.
LE SOUDAGE peut provoquer un
incendie ou une explosion.
Le soudage effectué sur des conteneurs fermés tels
que des réservoirs, tambours ou des conduites peut
provoquer leur éclatement. Des étincelles peuvent être
les, 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 o u u n incendie. A vant de commencer le soudage, vérifier
et s’assurer que l’endroit ne présente pas de danger.
D Se protéger et d’autres personnes de la projection d’étincelles et de
métal chaud.
D Ne pas souder dans un endroit là où des étincelles peuvent tomber sur
des substances inflammables.
D Déplacer toutes les substances inflammables à une distance de 10,7
m de l’arc de soudage. En cas d’impossibilité les recouvrir soigneusement avec des protections homologués.
D Des étincelles et des matériaux chauds du soudage peuvent facile-
ment passer dans d’autres zones en traversant de petites fissures et
des ouvertures.
D Surveiller tout déclenchement d’incendie et tenir un extincteur à proxi-
mité.
D Le soudage effectué sur un plafond, plancher, paroi ou séparation
peut déclencher un incendie de l’autre côté.
D Ne pas effectuer le soudage sur des conteneurs fermés tels que des
réservoirs, tambours, ou conduites, à moins qu’ils n’aient été préparés correctement conformément à AWS F4.1 (voir les normes de
sécurité).
D Brancher le câble sur la pièce le plus près possible de la zone de sou-
dage pour éviter le transport du courant sur une longue distance par
des chemins inconnus éventuels en provoquant des risques d’élec-
trocution et d’incendie.
D Ne pas utiliser le poste de soudage pour dégeler des conduites ge-
lées.
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 dépourvus d’huile tels que des
gants en cuir, une chemise en matériau lourd, des pantalons sans re-
vers, des chaussures hautes et un couvre chef.
D Avant de souder, retirer toute substance combustible de vos poches
telles qu’un allumeur au butane ou des allumettes.
projetées de l’arc de soudure. La projection d’étincel-
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
lantes. Pendant la période de refroidissement des soudures, elles ris-
quent de projeter du laitier.
D Porter des lunettes de sécurité avec écrans latéraux ou un écran facial.
des étincelles et des particules métalliques vo-
LES CHAMPS MAGNÉTIQUES peuvent
affecter les stimulateurs cardiaques.
D Porteurs d e stimulateur cardiaque, restez à distance.
D Les porteurs d’un stimulateur cardiaque doivent
d’abord consulter leur médecin avant de s’approcher
des opérations de soudage à l’arc, de gougeage ou
de soudage par points.
LE BRUIT peut affecter l’ouïe.
Le bruit des processus et des équipements peut affecter
l’ouïe.
D Porter des protections approuvés pour les oreilles si
le niveau sondre est trop élevé.
Si des BOUTEILLES sont endommagées, elles pourront exploser.
Des bouteilles de gaz protecteur contiennent du gaz
sous haute pression. Si une bouteille est endommagée, elle peut exploser. Du fait que les bouteilles de gaz
manipuler avec précaution.
D Protéger les bouteilles de gaz comprimé d’une chaleur excessive,
des chocs mécaniques, du laitier, des flammes ouvertes, des étin-
celles et des arcs.
D Placer les bouteilles debout en les fixant dans un support stationnai-
re ou dans un porte-bouteilles pour les empêcher de tomber ou de
se renverser.
D Tenir les bouteilles éloignées des circuits d e soudage ou autres cir-
cuits électriques.
D Ne jamais placer une torche de soudage sur une bouteille à gaz.
D Une électrode de soudage ne doit jamais entrer en contact avec une
bouteille.
D Ne jamais souder une bouteille pressurisée – risque d’explosion.
D Utiliser seulement des bouteilles de gaz protecteur, régulateurs,
tuyaux et raccords convenables pour cette application spécifique;
les maintenir ainsi que les éléments associés en bon état.
D Ne pas tenir la tête en face de la sortie en ouvrant la soupape de la
bouteille.
D Maintenir le chapeau de protection sur la soupape, sauf en cas d’uti-
lisation ou de branchement de la bouteille.
D Lire et suivre les instructions concernant les bouteilles de gaz com-
primé, les équipements associés et les publications P-1 CGA énumérées dans les normes de sécurité.
font normalement partie du procédé de soudage, les
OM-2224 Page 6
Page 11
1-3. 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 proxi-
mité de surfaces infllammables.
D Ne pas installer l’appareil à proximité de produits inflammables
D Ne pas surcharger l’installation électrique – s”assurer que l’alimen-
tation est correctement dimensionné et protégé avant de mettre
l’appareil en service.
LA CHUTE DE L’APPAREIL peut
blesser.
D Utiliser l’anneau de levage uniquement pour sou-
lever l’appareil, NON PAS les chariot, les bouteilles de gaz ou tout autre accessoire.
D Utiliser un engin d’une capacité appropriée pour
D En utilisant des fourches de levage pour déplacer l’unité, s’assurer
que les fourches sont suffisamment longues pour dépasser du côté
opposé de l’appareil.
soulever l’appareil.
L’EMPLOI EXCESSIF peut
SURCHAUFFER L’ÉQUIPEMENT.
D Prévoir une période de refroidissement, respec-
ter le cycle opératoire nominal.
D Réduire le courant ou le cycle opératoire avant de
D Ne pas obstruer les passages d’air du poste.
recommancer le soudage.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D Rester à l’écart des organes mobiles comme le
ventilateur.
D Maintenir fermés et fixement en place les portes,
panneaux, recouvrements et dispositifs de
protection.
LE RAYONNEMENT HAUTE FRÉ-
QUENCE (H.F.) risque de provoquer
des interférences.
D Le rayonnement haute frequence peut provoquer
des interférences avec les équipements de radio–navigation e t d e communication, les services
D Demander seulement à des personnes qualifiées familiarisées
avec des équipements électroniques de faire fonctionner l’installa-
tion.
D L’utilisateur est tenu de faire corriger rapidement par un électricien
qualifié les interférences résultant de l’installation.
D Si le FCC signale des interférences, arrêter immédiatement l’appa-
reil.
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 et un blindage pour réduire les interfé-
rences éventuelles.
de sécurité et les ordinateurs.
LE SOUDAGE À L’ARC risque de
provoquer des interférences.
LES CHARGES ÉLECTROSTATI-
QUES peuvent endommager les circuits imprimés.
D Établir la connexion avec la barrette de terre
avant de manipuler des cartes ou des pièces.
D Utiliser des pochettes et des boîtes antistatiques
pour stocker, déplacer ou expédier des cartes de
circuits imprimes.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D Ne pas s’approcher des organes mobiles.
D Ne pas s’approcher des points de coincement
tels que des rouleaux de commande.
LES FILS DE SOUDAGE peuvent provoquer des blessures.
D Ne pas appuyer sur la gachette avant d’en avoir
reçu l’instruction.
D Ne pas diriger le pistolet vers soi, d’autres person-
nes ou toute pièce mécanique en engageant le fil
de soudage.
D L’énergie électromagnétique risque de provoquer
des interférences pour l’équipement électronique
sensible tel que les ordinateurs et l’équipement
D Veiller à ce que tout l’équipement de la zone de soudage soit com-
patible électromagnétiquement.
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 équipement
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 précédentes, il
incombe à l’utilisateur de prendre des mesures supplémentaires tel-
les 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.
commandé par ordinateur tel que les robots.
LES CHAMPS MAGNÉTIQUES peuvent
affecter les stimulateurs cardiaques.
D Porteurs de stimulateur cardiaque, restez à dis-
tance.
D Les porteurs d’un stimulateur cardiaque doivent
d’abord consulter leur médecin avant de s’appro-
cher des opérations de soudage à l’arc, de gou-
geage ou de soudage par points.
OM-2224 Page 7
Page 12
1-4. Principales normes de sécurité
Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel-
ding Society, 550 N.W. Lejeune Rd, Miami FL 33126
Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent
of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Safe Practice for the Preparation for Welding and Cutting of Containers That Have Held Hazardous Substances, norme A WS
F4.1, de l ’American Welding Society, 550 N.W. Lejeune Rd, Miami FL
33126
National Electrical Code, NFPA Standard 70, de la National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
de la Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.
Règles de s écurité en soudage, coupage et procédés connexes, norme
CSA W117.2, de l’Association canadienne de normalisation, vente de
normes, 178 Rexdale Boulevard, Rexdale (Ontario) Canada M9W 1R3.
Safe Pra ctices For Occupation And Educational Eye And Face Protection, norme ANSI Z87.1, de l’American National Standards Institute,
1430 Broadway, New York, NY 10018.
Cutting and Welding Processes, norme NFPA 51B, de la National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
1-5. Information sur les champs électromagnétiques
Données sur le soudage électrique et sur les ef fets, pour l ’organisme,
des champs magnétiques basse fréquence
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”. T outefois, 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 électromagnéti-
ques pendant le soudage ou le coupage.
Afin de réduire les champs électromagnétiques dans l’environnement
de travail, respecter les consignes suivantes :
1 Garder les câbles ensembles en les torsadant ou en les
attachant avec du ruban adhésif.
2 Mettre tous les câbles du côté opposé 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 Relier la pince de masse le plus près possible de la zone de
soudure.
Consignes relatives aux stimulateurs cardiaques :
Les personnes qui portent un stimulateur cardiaque doivent avant tout
consulter leur docteur. Si vous êtes déclaré apte par votre docteur, il e st
alors recommandé de respecter les consignes ci–dessus.
OM-2224 Page 8
Page 13
SECTION 2 – SPECIFICATIONS AND INSTALLATION
2-1. Specifications
Input
Power
Single-
Phase
AC
Rated Welding
Output
Welding
Amperage
Range
Maximum
Open-Circuit
Voltage DC
Amperes
Input At
Rated
Load Out-
put,
50/60Hz,
Single-
Phase
KVA
AT
100%
Duty
Cyc.
KW Dimensions Weight
115
Volts
230
Volts
80A @ 23.2 Volts
DC, 100% Duty
Cycle
100A @ 24 Volts
DC, 100% Duty
Cycle
2-2. Description
5 – 1 10A 93V 26 3.0 2.0
5 – 140A 93V 20 4.6 2.6
1
H: 8 in (203 mm)
W: 4-5/16 in (1 10 mm)
L: 12-1/4 in (311 mm)
1 Welding Power Source
This unit is a compact, light weight,
portable welding power source
containing the latest high performance electronics that supplies DC
weld output for use with the Stick
Electrode and TIG welding processes.
This unit also has a carrying strap
and quick-disconnect weld output
receptacles t o aid portability and to
encourage use wherever the job
may be located. Because of its
electronic design, this unit consumes only modest amounts of input power and provides superb arc
characteristics. Further, it is easy
to install and simple to operate. This
welding power source is equipped
with the advanced Auto-Link circuitry which automatically adjusts
the unit to operate from the available input voltage without making
any internal changes. The circuitry
works with either 115 or 230 volts
input power.
10 lb
10 lb
(4.5 kg)
Ref. ST-802 385-A
OM-2224 Page 9
Page 14
2-3. Included with Your Unit (Stick Only)
1
3
2
1 Shoulder Strap (Carrying
Strap)
2 13 ft (4 m) Cable With
Electrode Holder and
4
Quick-Connect Plug
3 10 ft (3 m) Cable With
Work Clamp And
Quick-Connect Plug
4 6 ft (1.8 m) 115 VAC Input
Power Cord With 20 A Plug
. Some assembly is required.
For options and accessories,
contact your distributor.
Ref. ST-802 387-A
2-4. Included with Your Unit (TIG / Stick)
1
3
4
5
1 Shoulder Strap (Carrying
Strap)
2 12 ft (3.6 m) Gas Hose /
Coupler And Inert Gas
Regulator / Flowmeter
3 10 ft (3 m) Cable With
Work Clamp And
6
2
Quick-Connect Plug
4 12 ft (3.6 m) TIG Torch
With valve and
Quick-Connect Plug
5 13 ft (4 m) Cable With
Electrode Holder and
Quick-Connect Plug
6 6 ft (1.8 m) 115 VAC Input
Power Cord With 20 A Plug
. Some assembly is required.
For options and accessories,
contact your distributor.
ST-802 387–A / ST-802 020
OM-2224 Page 10
Page 15
2-5. Duty Cycle And Overheating
230 VAC
115 VAC
Duty Cycle is percentage of 10 mi n utes that unit can weld at rated load
without overheating.
If unit overheats, output stops, the
Overtemperature Light comes On,
and the cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or voltage or duty
cycle before starting to weld again.
Y Exceeding duty cycle can
damage unit and void
warranty.
110 A @ 35% Duty Cycle (115 V Input)
140 A @ 25% Duty Cycle (230 V Input)
35% duty cycle for 115 vac
3-1/2 Minutes Welding 6-1/2 Minutes Resting
25% duty cycle for 230 vac
2-1/2 Minutes Welding 7-1/2 Minutes Resting
Overheating
0
Minutes
80 A @ 100% Duty Cycle (115 V Input)
100 A @ 100% Duty Cycle (230 V Input)
100%dutycycle
Continuous Welding
A or V
15
OR
Reduce Duty Cycle
193 116
OM-2224 Page 11
Page 16
2-6. Volt-Ampere Curves
Stick Min.
115 VAC INPUT
TIG and Stick Max.
TIG Min.
230 VAC INPUT
Volt-ampere curves show minimum
and maximum voltage and amperage output capabilities of welding
power source. Curves of other settings fall between curves shown.
Stick Min.
TIG and Stick Max.
TIG Min.
193 117-115V / 193 117-230V
OM-2224 Page 12
Page 17
2-7. Selecting A Location
1
1 Welding Power Source
Use shoulder strap to lift and move
unit.
2 Rating Label
Label i s located on side of unit. Use
rating label to determine input power needs.
Y Special installation may be
required where gasoline or
volatile liquids are present –
see NEC Article 511 or CEC
Section 2 0 .
18 in
(460 mm)
Airflow Distance
Requirements
18 in
(460 mm)
Y Do not move or operate unit
where it could tip.
2-8. Typical Connection Methods
1
2
ST-801 956-A / Ref. ST-802 385-A / 193 623
Y Turn Off welder before mak-
ing connections.
1 Stick Connections
2
2 TIG Connections
Obtain gas cylinder and Proper TIG
Torch from your distributor .
Typical Stick
Connections
Typical TIG Connections
And Equipment
ETP-1400-PDF
OM-2224 Page 13
Page 18
2-9. Connecting To Weld Output Receptacles
Y Turn Off welder before mak-
ing connections.
1 Negative (–) Weld Output
Receptacle
2 Positive (+) Weld Output
Receptacle
3 Connectors
For TIG Welding (Electrode Nega-
tive), connect work cable connector
to positive (+) receptacle and TIG
1
3
2
Torch cable connector to negative
(–) receptacle.
For STICK Welding (Electrode
Positive), connect work cable connector to negative (–) receptacle
and Electrode Holder cable connector to positive (+) receptacle.
To connect to receptacle, align keyway, insert connector, and turn
clockwise (approximately 1/2 turn).
Ref. ST-802 385-A
2-10. Connecting Remote Control To Remote Receptacle (For Lift-ArcE TIG Only)
1
2-11. Rear Panel And Power Switch
1 Remote Control Plug
To tighten, insert plug into recep-
tacle and turn collar clockwise 90°.
. Connecting a remote control
automatically places the machine in Lift-Arc TIG regardless
of front panel setting.
ST-802 385-A
1
2
1 Rear Panel
2 Power On/Off Switch
Rotate the Power Switch to the On
(l) or Off (0) position as needed according to the markings on the rear
panel.
3 Input Power Cord
OM-2224 Page 14
3
Ref. ST-802 385
Page 19
2-12. Connecting Input Power
Y The welder is shipped with a
115 VAC 20 amp input power
cord installed. If unit is to be
used on 230 VAC 20 amp in-
put power, install new power
cord according to Section
2-12.
1 Input Power Cord
2 115 or 230 VAC Grounded
Receptacle
1
. The Auto-Link circuitry in this
unit automatically links the
power source to the primary
voltage being applied, either
115 or 230 VAC.
An individual branch circuit capable
of carrying 30 amperes and protected by f u s e s o r c i r c uit breaker is
required. Recommended fuse or
circuit breaker size is 35 amperes.
Connect input power plug to proper
receptacle.
2
1
Ref. ST-802 385–A
OM-2224 Page 15
Page 20
2-13. Selecting Extension Cord (Use Shortest Cord Possible)
Cord Lengths for 120 Volt Loads
Maximum Allowable Cord Length in ft (m) for Conductor Size (AWG)*
Current
(Amperes)
5 350 (106) 225 (68) 137 (42) 100 (30)
7 400 (122) 250 (76) 150 (46) 100 (30) 62 (19)
10 400 (122) 275 (84) 175 (53) 112 (34) 62 (19) 50 (15)
15 300 (91) 175 (53) 112 (34) 75 (23) 37 (11) 30 (9)
20 225 (68) 137 (42) 87 (26) 50 (15) 30 (9)
25 175 (53) 112 (34) 62 (19) 37 (11)
30 150 (46) 87 (26) 50 (15) 37 (11)
*Conductor size is based on maximum 2% voltage drop
Cord Lengths for 240 Volt Loads
Current
(Amperes)
5 700 (213) 450 (137) 225 (84) 200 (61)
7 800 (244) 500 (152) 300 (91) 200 (61) 125 (38)
10 800 (244) 550 (168) 350 (107) 225 (69) 125 (38) 100 (31)
4 6 8 10 12 14
Maximum Allowable Cord Length in ft (m) for Conductor Size (AWG)*
4 6 8 10 12 14
15 600 (183) 350 (107) 225 (69) 150 (46) 75 (23) 60 (18)
20 450 (137) 275 (84) 175 (53) 100 (31) 60 (18)
25 350 (107) 225 (69) 125 (38) 75 (23)
*Conductor size is based on maximum 2% voltage drop
OM-2224 Page 16
Page 21
2-14. Installing 230 Volts Ac Input Power Cord
3
1
5
7
6
4
2
Tools Nee d e d :
Y Disconnect input power plug from re-
ceptacle before installing different
input power cord.
Remove the case by removing the two top
handle screws and sliding case up and off.
Disconnect case grounding wire when removing case.
1 Input Power Cord
Remove knob from Power Switch (4). Note
how knob goes onto shaft.
Remove screws holding Power Switch in
place, and pull switch out toward inside of
unit.
Loosen strain relief clamp, and push several
inches of power cord into unit.
Mark location of switch terminals where
black and white leads are connected, and
note location of ground lead. Disconnect
leads from ground terminal and switch.
2 Black Switch Lead
3 Rear Panel
4 Power Switch
Pull out power cord from rear of unit.
5 Case Grounding Lead
6 White Lead
Ref. ST-802 385
7 Green Ground Lead
Insert new power cord through strain relief,
and push an extra inch into unit.
Connect ground lead and black and white
leads to marked locations. Double-check all
connections.
Reinstall Power Switch onto rear panel. Pull
power cord back through strain relief until
leads are properly dressed in unit. Tighten
clamp.
Reinstall case and reconnect case grounding lead during assembly.
OM-2224 Page 17
Page 22
2-15. Remote Receptacle Information (For Lift-ArcE TIG Only)
NOTE
ST-802 385-A
*The remaining sockets are not used.
Note: Receptacle is not used to control contactor. Output is always on.
Note: Connecting a remote control automatically places the machine in Lift-Arc TIG regardless of front panel setting.
Remote control device has complete control of amperage at all times when
connected to the remote receptacle.
Socket* Socket Information
1 N/A
2 N/A
3 +10 volts DC
4 0 to +10 volts DC input command signal from remote control.
5 Remote control circuit common.
6 Remote enable.
OM-2224 Page 18
Page 23
SECTION 3 – OPERATION
3-1. Front Panel Controls
Weld output receptacles are
energized when Power
Switch is On and Input supply power is connected and
On.
2
3
1
7
6
1 Ready Light
This light comes On when the Power
Switch on the rear panel is placed in the ON
(I) position. The light indicates that the unit
is energized and ready for welding operations.
. The fan motor is thermostatically
controlled and only runs when cooling
is needed.
2 Amperage Adjustment Control
This control adjusts the desired amperage
for the welding application. Use this control
to set the required value for the specific job
and electrode. The dial is calibrated in actual amperes according to the input voltage
used to power the unit.
. The Amperage Adjustment Control is a
dual reading dial. Be sure to set it according to the input voltage supplying
power to the unit.
5
3 Overtemperature Light
This light comes ON when the unit over-
heats. When this happens, the unit shuts
down and the fan motor runs. Once the unit
has cooled down, the output will come back
ON. Reduce the duty cycle or amperage
before starting to weld again. This light
flashes if the input voltage (primary) is too
low or if there is an input overcurrent fault.
4 Positive Weld Output Receptacle
Indicator
For STICK welding, connect the electrode
cable to this receptacle (normally uses reverse Polaris connections, but always
check electrode recommendations.) For
TIG welding, connect work cable to this receptacle (normally uses straight polarity).
5 STICK / TIG Selector Switch
This switch provides a simple and easy
way to select the required welding process.
4
Place the switch in the desired position to
suit the application. This switch is NOT a
Polarity Switch. This switch activates the
Lift-Arc (see Section 3-2) and Dig circuitry.
6 Negative Weld Output Receptacle
Indicator
For STICK welding, connect the work cable
to this receptacle (normally uses reverse
Polaris connections, but always check
electrode recommendations.) For TIG
welding, connect torch cable to this receptacle (normally uses straight polarity).
7 Remote Receptacle (For Lift-Arc TIG
Only)
Allows amperage to be controlled remotely.
Amperage may be adjusted from min to
max of unit output, regardless of where
front panel amperage control is set.
. Connecting a remote control automati-
cally places the machine in Lift-Arc TIG
regardless o f front panel setting.
192 999-A
OM-2224 Page 19
Page 24
3-2. Lift-Arct TIG Procedure
“Touch”
Do NOT Strike Like A Match!
1
1 – 2
Seconds
With Process Switch in the Lift-Arc
TIG position, start an arc as follows:
1 TIG Electrode
2
2 Workpiece
Touch tungsten electrode to work-
piece at weld start point, hold
electrode to workpiece for 1-2
seconds, and slowly lift electrode.
An arc will form when electrode is
lifted.
Open-circuit voltage is present before tungsten electrode touches
workpiece. However, the arc will
not initiate until after the electrode is
lifted from workpiece. This allows
electrode to touch workpiece without overheating, sticking, or getting
contaminated.
Ref. S-156 279
SECTION 4 – MAINTENANCE AND TROUBLESHOOTING
4-1. Routine Maintenance
Y Disconnect power before maintaining.
. Maintain more often during severe conditions.
3 Months
Replace
unreadable
labels.
3 Months
Repair Or Replace
Cracked Cables
And Cords
6 Months
Clean and tighten
weld terminals.
Y Do not remove case when
blowing out inside of unit
(see Section 4-2) .
Blow out inside. During
heavy service clean
monthly.
Replace Damaged
Gas Hose
OM-2224 Page 20
Page 25
4-2. Blowing Out Inside Of Unit
Y Do not remove case when
blowing out inside of unit.
To blow out unit, direct airflow
through front and back louvers as
shown.
Ref. ST-802 385-A
OM-2224 Page 21
Page 26
4-3. Troubleshooting
Trouble Remedy
No weld output; unit completely inoperative; Ready light Off.
Place line disconnect switch for circuit powering welder in On position.
Check and replace line fuse(s), if necessary, or reset circuit breaker.
Be sure input power cord is plugged in and that receptacle is receiving input power.
No weld output; Ready light On; OverTemperature light Off.
No weld output; Ready light On; OverTemperature light On.
No weld output; Ready light On; OverTemperature light Flashing.
Erratic or improper welding arc or output.
Fan not operating (unit is equipped with
Fan-On-Demand so fan runs only
when needed).
Check and secure loose weld cable(s) into receptacle(s) on welding power source.
Check and correct poor connection of work clamp to workpiece.
Unit overheated causing thermal shutdown. Allow unit to cool with fan On (see Section 2-5).
Reduce duty cycle or amperage to prevent further overload conditions.
Check and correct blocked/poor airflow to and around unit or move unit clear of blockages (see Sec-
tion 2-7).
Check and clean dirty power module (see Section 4-2).
Turn Power Switch Off and back On again. If light continues to flash, call or take machine to Factory
Authorized Service Agent (this condition may indicate a fault in the power section).
Use proper size and type of weld cable (see your Distributor).
Clean and tighten all weld connections.
Check and reverse electrode polarity; check and correct poor connections to workpiece.
Unit is cool and not warmed up enough to require fan cooling.
Check for and remove anything blocking fan movement.
Have Factory Authorized Service Agent check fan motor and control circuitry.
Stick welding problems: Hard starts;
poor welding characteristics; unusual
spattering problems.
TIG welding problems: Wandering arc;
hard starts; poor welding characteristics; spattering problems.
TIG welding problems: Tungsten electrode oxidizing and not remaining bright
after conclusion of weld.
OM-2224 Page 22
Use proper type and size of electrode.
Use method shown in Section 8 to get better starts.
Check and reverse electrode polarity; check and correct poor connections to workpiece.
Make sure a remote control is not connected to the remote receptacle (see Section 2-10).
Use proper type and size of tungsten.
Use properly prepared tungsten.
Check and reverse electrode polarity; check and correct poor connections to workpiece.
Shield weld zone from drafts.
Check shielding gas supply , and be sure it is the correct type (argon) and that the cylinder is not empty.
Check and tighten all gas fittings.
Check and change electrode polarity; move Changeover Switch to TIG position.
Page 27
SECTION 5 – ELECTRICAL DIAGRAM
Figure 5-1. Circuit Diagram For Welding Power Source
203 617
OM-2224 Page 23
Page 28
SECTION 6 – STICK WELDING (SMAW) GUIDELINES
6-1. Stick Welding Procedure
Y Weld current starts when
electrode touches workpiece.
Y Weld current can damage
electronic parts in vehicles.
Disconnect both battery
cables before welding on a
vehicle. P lace work clamp as
close t o the weld as possible.
1 Workpiece
Make sure workpiece is clean be-
5
4
2
3
6
1
7
fore welding.
2 Work Clamp
3 Electrode
A small diameter electrode requires
less current than a large one. Follow electrode manufacturer’s
instructions when setting weld amperage (see Section 6-2).
4 Insulated Electrode Holder
5 Electrode Holder Position
6 Arc Length
Arc length is the distance from the
electrode t o the workpiece. A short
arc with correct amperage will give
a sharp, crackling sound.
7 Slag
Use a chipping hammer and wire
brush to remove slag. Remove slag
and check weld bead before making another weld pass.
Tools Needed:
OM-2224 Page 24
stick 12/96 – ST-151 593
Page 29
6-2. Electrode and Amperage Selection Chart
RANGE
AMPERAGE
ELECTRODE
6010
&
6011
6013
7014
7018
7024
Ni-Cl
308L
DIAMETER
3/32
1/8
5/32
3/16
7/32
1/4
1/16
5/64
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
7/32
1/4
3/32
1/8
5/32
3/16
3/32
1/8
5/32
50
100
150
200
250
300
350
400
450
AC
DC*
ELECTRODE
EP
6010
EP
6011
EP,EN
6013
EP,EN
7014
EP
7018
EP,EN
7024
EP
NI-CL
EP
308L
*EP = ELECTRODE POSITIVE (REVERSE POLARITY)
EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)
POSITION
ALL
ALL
ALL
ALL
ALL
FLAT
HORIZ
FILLET
ALL
ALL
PENETRATION
DEEP
DEEP
LOW
MED
LOW
LOW
LOW
LOW
USAGE
MIN. PREP, ROUGH
HIGH SPATTER
GENERAL
SMOOTH, EASY,
FAST
LOW HYDROGEN,
STRONG
SMOOTH, EASY,
FASTER
CAST IRON
STAINLESS
Ref. S-087 985-A
6-3. Striking an Arc – Scratch Start Technique
1
3
6-4. Striking an Arc – Tapping Technique
1
3
1 Electrode
2 Workpiece
3 Arc
Drag electrode across workpiece
2
like striking a match; lift electrode
slightly after touching work. If arc
goes out electrode was lifted too
high. If electrode sticks to workpiece, use a quick twist to free it.
S-0049
1 Electrode
2 Workpiece
3 Arc
Bring electrode straight down to
workpiece; then lift slightly to start
2
arc. If arc goes out, electrode was
lifted too high. If electrode sticks to
workpiece, use a quick twist to free it.
S-0050
OM-2224 Page 25
Page 30
6-5. Positioning Electrode Holder
90° 90°
End View of Work Angle Side View of Electrode Angle
10°-30°
GROOVE WELDS
45°
45°
End View of Work Angle Side View of Electrode Angle
6-6. Poor Weld Bead Characteristics
FILLET WELDS
2
3
10°-30°
S-0060
1 Large Spatter Deposits
2 Rough, Uneven Bead
3 Slight Crater During Welding
4 Bad Overlap
5 Poor Penetration
1
4
6-7. Good Weld Bead Characteristics
OM-2224 Page 26
5
1 Fine Spatter
2 Uniform Bead
3 Moderate Crater During
Welding
Weld a new bead or layer for each
1/8 in. (3.2 mm) thickness in metals
being w elded.
1
5234
4 No Overlap
5 Good Penetration into Base
Metal
S-0053-A
S-0052-B
Page 31
6-8. Conditions That Affect Weld Bead Shape
NOTE
Weld bead shape is affected by electrode angle, arc length, travel speed, and
thickness of base metal.
Angle Too Small
Too Short
Slow
Correct Angle
10° - 30°
Drag
ELECTRODE ANGLE
Normal Too Long
ARC LENGTH
Normal Fast
TRAVEL SPEED
Angle Too Large
Spatter
S-0061
6-9. Electrode Movement During Welding
NOTE
1
Normally , a single stringer bead is satisfactory for most narrow groove weld joints;
however, for wide groove weld joints or bridging across gaps, a weave bead or
multiple stringer beads work better.
3
1 Stringer Bead – Steady
Movement Along Seam
2
2 Weave Bead – Side to Side
Movement Along Seam
3 Weave Patterns
Use weave patterns to cover a wide
area in one pass of the electrode.
Do not let weave width exceed
2-1/2 times diameter of electrode.
S-0054-A
OM-2224 Page 27
Page 32
6-10. Butt Joints
1
6-11. Lap Joint
2
Single-Layer Fillet Weld
1 Tack Welds
2
1/16 in
(1.6 mm)
3
30°
Or Less
11
30°
4
30°
Or Less
3
Multi-Layer Fillet Weld
Prevent edges of joint from drawing
together ahead of electrode by tack
welding the materials in position before final weld.
2 Square Groove Weld
Good for materials up to 3/16 in (5
mm) thick.
3 Single V-Groove W eld
Good for materials 3/16 – 3/8 in (5-9
mm) thick. Cut bevel with oxyacetylene or plasma cutting equipment.
Remove scale from material after
cutting. A grinder can also be used
to prepare bevels.
Create 3 0 degree angle of bevel on
materials in V-groove welding.
4 Double V-Groove W eld
Good for materials thicker than 3/8
in (9 mm).
S-0662
1 Electrode
2 Single-Layer Fillet Weld
Move electrode in circular motion.
3 Multi-Layer Fillet Weld
Weld a second layer when a heavi-
er fillet is needed. Remove slag before making another weld pass.
Weld both sides of joint for maximum strength.
S-0063 / S-0064
6-12. Tee Joint
OM-2224 Page 28
2
1
45°
Or Less
1 Electrode
2 Fillet Weld
Keep arc short and move at definite
rate of speed. Hold electrode as
shown to provide fusion into the
corner. Square edge of the weld
surface.
For maximum strength weld both
2
1
3
sides of upright section.
3 Multi-Layer Deposits
Weld a second layer when a heavi-
er fillet is needed. Use any of the
weaving patterns shown in Section
6-9. Remove slag before making
another weld pass.
S-0060 / S-0058-A / S-0061
Page 33
6-13. Weld Test
3
2 To 3 in
(51-76 mm)
2 To 3 in
(51-76 mm)
1/4 in
(6.4 mm)
2
1
2
6-14. Troubleshooting – Porosity
Porosity – small cavities or holes resulting from gas
pockets in weld metal.
Possible Causes Corrective Actions
Arc length too long. Reduce arc length.
1 Vise
2 Weld Joint
3 Hammer
3
1
Strike weld joint in direction shown.
A good weld bends over but does
not break.
S-0057-B
Damp electrode. Use dry electrode.
Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before
welding.
6-15. Troubleshooting – Excessive Spatter
Excessive Spatter – scattering of molten metal particles
that cool to solid form near weld bead.
Possible Causes Corrective Actions
Amperage too high for electrode. Decrease amperage or select larger electrode.
Arc length too long or voltage too high. Reduce arc length or voltage.
OM-2224 Page 29
Page 34
6-16. Troubleshooting – Incomplete Fusion
Incomplete Fusion – failure of weld metal to fuse completely with
base metal or a preceeding weld bead.
Possible Causes Corrective Actions
Insufficient heat input. Increase amperage. Select larger electrode and increase amperage.
Improper welding technique. Place stringer bead in proper location(s) at joint during welding.
Adjust work angle or widen groove to access bottom during welding.
Momentarily hold arc on groove side walls when using weaving technique.
Keep arc on leading edge of weld puddle.
Workpiece dirty. Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before
welding.
6-17. Troubleshooting – Lack Of Penetration
Lack Of Penetration – shallow fusion between weld metal and
base metal.
Lack of Penetration Good Penetration
Possible Causes Corrective Actions
Improper joint preparation. Material too thick. Joint preparation and design must provide access to bottom of groove.
Improper weld technique. Keep arc on leading edge of weld puddle.
Insufficient heat input. Increase amperage. Select larger electrode and increase amperage.
Reduce travel speed.
6-18. Troubleshooting – Excessive Penetration
Excessive Penetration – weld metal melting through base metal and
hanging underneath weld.
Excessive Penetration
Possible Causes Corrective Actions
Excessive heat input. Select lower amperage. Use smaller electrode.
OM-2224 Page 30
Good Penetration
Increase and/or maintain steady travel speed.
Page 35
6-19. Troubleshooting – Burn-Through
Burn-Through – weld metal melting completely through base metal resulting
in holes where no metal remains.
Possible Causes Corrective Actions
Excessive heat input. Select lower amperage. Use smaller electrode.
Increase and/or maintain steady travel speed.
6-20. Troubleshooting – Waviness Of Bead
Waviness O f Bead – weld metal that is not parallel and does not cover
joint formed by base metal.
Possible Causes Corrective Actions
Unsteady hand. Use two hands. Practice technique.
6-21. Troubleshooting – Distortion
Distortion – contraction of weld met-
al during welding that forces base
metal t o move.
Base metal moves
in the direction of
the weld bead.
Possible Causes Corrective Actions
Excessive heat input. Use restraint (clamp) to hold base metal in position.
Make tack welds along joint before starting welding operation.
Select lower amperage for electrode.
Increase travel speed.
Weld in small segments and allow cooling between welds.
OM-2224 Page 31
Page 36
SECTION 7 – SELECTING AND PREPARING
TUNGSTEN ELECTRODE
gtaw 7/97
NOTE
For additional information, see your distributor for a handbook on the Gas
Tungsten Arc Welding (GTAW) process. Wear clean gloves to prevent
contamination of tungsten electrode.
7-1. Selecting Tungsten Electrode
Amperage Range - Gas Type♦ - Polarity
Electrode Diameter DC – Argon – Electrode Negative/Straight
Polarity
2% Thorium Alloyed Tungsten (Red
Band)
.010” Up to 25 *
.020” 15-40 *
.040” 25-85 *
1/16” 50-160 10-20
3/32” 135-235 15-30
1/8” 250-400 25-40
5/32” 400-500 40-55
3/16” 500-750 55-80
1/4” 750-1000 80-125
♦Typical argon shielding gas flow rates are 15 to 35 cfh (cubic feet per hour) – 7 to 16.5 lpm (liters per minute).
*Not Recommended.
The figures listed are intended as a guide and are a composite of recommendations from American Welding Society (AWS) and electrode
manufacturers.
DC – Argon – Electrode Positive/Reverse
Polarity
7-2. Safety Information About Tungsten
1
2
Y Grinding the tungsten elec-
trode produces dust and flying sparks which can cause
injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an
approved respirator. Read
MSDS for safety information.
Consider using tungsten
containing ceria, lanthana,
or yttria instead of thoria.
Grinding dust from thoriated
electrodes contains low-level radioactive material.
Properly dispose of grinder
dust in an environmentally
safe way. Wear proper face,
hand, and body protection.
Keep flammables away.
1 Pointed Tungsten Electrode
2 Tungsten Electrode With
Balled End
Ref. S-0161
OM-2224 Page 32
Page 37
7-3. Preparing Tungsten For DC Electrode Negative (DCEN) Welding
1 Tungsten Electrode
1
Electrode Diameter
4
Ideal Tungsten Preparation – Stable Arc
2
2-1/2 Times
1
2
3
2 Tapered End
Grind end of tungsten on fine grit,
hard abrasive wheel before welding. Do not use wheel for other jobs
or tungsten can become contaminated causing lower weld quality.
1 Stable Arc
2 Flat
Diameter of this flat determines
amperage capacity.
3 Grinding Wheel
4 Straight Ground
1
2
3
4
Wrong Tungsten Preparation – Wandering Arc
1 Arc Wander
2 Point
3 Grinding Wheel
4 Radial Ground
Ref. S-0161 / Ref. S-0162
OM-2224 Page 33
Page 38
SECTION 8 – GUIDELINES FOR TIG WELDING (GTAW)
8-1. Positioning The Torch
Y Grinding the tungsten elec-
trode produces dust and flying sparks which can cause
injury and start fires. Use local exhaust (forced ventilation) at the grinder or wear an
approved respirator. Read
MSDS for safety information.
Consider using tungsten
containing ceria, lanthana,
or yttria instead of thoria.
Grinding dust from thoriated
electrodes contains low-level radioactive material. Properly dispose of grinder dust
in an environmentally safe
way. W ear proper face, hand,
and body protection. Keep
flammables away .
1 Workpiece
Make sure workpiece is clean
before welding.
2 Work Clamp
Place as close to the weld as
possible.
3 Torch
4 Filler Rod (If Applicable)
5 Gas Cup
6 Tungsten Electrode
Select and prepare tungsten
according to Sections 7-1, and 7-2
or 7-3.
Guidelines:
The inside diameter of the gas cup
should be at least three times the
tungsten diameter to provide adequate shielding gas coverage. (For
example, if tungsten is 1/16 in
diameter, gas cup should be a
minimum of 3/16 in diameter .
Tungsten extension is the distance
the tungsten extends out gas cup of
torch.
The tungsten extension should be
no greater than the inside diameter
of the gas cup.
Arc length is the distance from the
tungsten to the workpiece.
10–25°
2
1
10–15°
4
3/16 in
Bottom View Of Gas Cup
90°
5
3
4
5
6
6
1/16 in
OM-2224 Page 34
Ref. ST-161 892
Page 39
8-2. Torch Movement During Welding
Tungsten Without Filler Rod
Welding direction
Form pool Tilt torch Move torch to front
Tungsten With Filler Rod
Welding direction
Form pool Tilt torch Add filler metal
Remove rod
75°
of pool. Repeat process.
75°
15°
Move torch to front
of pool. Repeat process.
ST-162 002-B
OM-2224 Page 35
Page 40
8-3. Positioning Torch Tungsten For Various Weld Joints
90°
Butt Weld And Stringer Bead
20°
20°
“T” Joint
70°
70°
Lap Joint
Corner Joint
10°
20°
40°
70°
20°
30°
90°
70°
OM-2224 Page 36
20°
ST-162 003 / S-0792
Page 41
Notes
OM-2224 Page 37
Page 42
SECTION 9 – PARTS LIST
. Hardware is common and
not available unless listed.
5
6
3
4
3
2
7
9
8
10
11
15
16
12
13
14
17
31
1
32
30
29
28
27
35
25
26
18
19
20
21
22
23
24
33
OM-2224 Page 38
34
ST-802 386-B
Figure 9-1. Welding Power Source Components
Page 43
Item
No. Quantity
Dia.
Mkgs.
Part
No.
Description
Figure 9-1. Welding Power Source Components
1 191 633 LABEL, WARNING, general precautionary 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 194 218 WRAPPER (order by serial number) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 S1 194 227 SWITCH, Input Power 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 194 216 PANEL, REAR 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 197 443 CABLE, INPUT, 115V, 20A 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 043 962 CABLE, INPUT, 230V, 20A (optional) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 190 028 LABEL, WARNING, electric shock hazard 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 FM1 194 226 FAN MOTOR ASSY 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 194 237 BRACKET, shield 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 194 235 BRACKET, transformer 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 PC1 203 619 CIRCUIT CARD ASSY, main 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 194 236 FAN MOTOR BRACKET 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 197 460 INSULATOR 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 197 463 BUS BAR, transformer, top 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Z1,Z2 194 234 TORROID, output filter 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 197 462 BUS BAR, transformer, bottom 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 T1 194 224 TRANSFORMER, main 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 194 232 HEAT SINK, 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 197 459 THERMISTOR 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 SR2 155 350 RECTIFIER, output 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 197 461 CAP, rectifier 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 C1,C2 194 233 CAPACITORS, output filter 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 RT1 194 219 THERMISTOR, assy 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 194 244 BUS BAR, flexible, positive output 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24 203 618 PANEL, FRONT 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25 RC1,RC2 194 223 WELD OUTPUT RECEPTACLES 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 194 221 AMPERAGE ADJUSTMENT KNOB 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 194 222 COVER, KNOB, BLUE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27 203 620 NAMEPLATE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28 194 231 BUS BAR, negative output 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29 R1 194 228 SHUNT 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 PC2 203 621 CIRCUIT CARD ASSY, front 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31 194 217 BASE 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32 194 220 SHOULDER STRAP 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33 197 457 ELECTRODE HOLDER 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34 197 456 WORK CABLE, w/clamp 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
197 458 CONNECTOR, tw lk male (Dinse type) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35 203 753 COVER 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*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.
OM-2224 Page 39
Page 44
OM-2224 Page 40
Page 45
Warranty Questions?
Call
1-800-4-A-MILLER
for your local
Miller distributor.
Y our distributor also gives
you ...
Service
Y ou 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, 2000
(Equipment with a serial number preface of “LA” 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 Supplies
* Intellitig
* Engine Driven Welding Generators
(NOTE: Engines are warranted separately by
the engine manufacturer .)
3. 1 Year — Parts and Labor
* DS-2 Wire Feeder
* Motor Driven Guns (w/exception of Spoolmate
185 & Spoolmate 250)
* Process Controllers
* Positioners and Controllers
* Automatic Motion Devices
* RFCS Foot Controls
* Induction Heating Power Sources
* Water Coolant Systems
* HF Units
* Grids
* Maxstar 140
* Spot Welders
* Load Banks
* Miller Cyclomatic Equipment
* Running Gear/Trailers
* Plasma Cutting Torches (except APT & SAF
Models)
* Field Options
(NOTE: Field options are covered under True
Blue for the remaining warranty period of the
product they are installed in, or for a minimum of
one year — whichever is greater.)
4. 6 Months — Batteries
5. 90 Days — Parts
* MIG Guns/TIG Torches
guarantees or warranties expressed or implied.
* Induction Heating Coils and Blankets
* APT, ZIPCUT & PLAZCUT Model Plasma Cutting
Torches
* Remote Controls
* Accessory Kits
* Replacement Parts (No labor)
* Spoolmate 185 & Spoolmate 250
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.
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 bas e d u p o n a c tual 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. I N N O 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 4/00
Page 46
Owner’s Record
Please complete and retain with your personal records.
Model Name Serial/Style Number
Purchase Date (Date which equipment was delivered to original customer.)
Distributor
Address
City
State Zip
Resources Available
Always provide Model Name and Serial/Style Number.
Contact your Distributor for:
To locate a distributor or service agency
near you, call 1-800-4-A-Miller or visit our
website at www.MillerWelds.com
Contact the Delivering Carrier for:
For assistance in filing or settling claims,
contact your distributor and/or equipment
manufacturer’s Transportation Department.
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
File a claim for loss or damage during
shipment.
Miller Electric Mfg. Co.
An Ill inoi s Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters–USA
USA Phone: 920-735-4505 Auto-A t t ended
USA & Canada FAX: 9 20-735-4134
International FAX: 920-735-4125
European Headquarters –
United Kingdom
Phone: 44 (0) 1204-593493
FAX: 44 (0) 1204-598066
www.MillerWelds.com
PRINTED IN USA 2000 Miller Electric Mfg. Co. 1/00
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