OM-232 386B
Processes
2007−11
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
Description
Arc Welding Power Source
and Wire Feeder
R
Millermatic DVI-2
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TABLE OF CONTENTS
1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3. Additional Symbols For Installation, Operation, And Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4. California Proposition 65 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5. Principal Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-6. EMF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1. Symboles utilisés . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2. Dangers relatifs au soudage à l’arc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance . . . . . .
2-4. Proposition californienne 65 Avertissements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5. Principales normes de sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6. Information EMF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 − DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3-1. Symbols And Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SECTION 4 − INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4-1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4-2. Duty Cycle And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4-3. Volt-Ampere Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4-4. Connecting To Weld Output Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4-5. Installing Work Cable And Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4-6. Setting Gun Polarity For Wire Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4-7. Installing Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4-8. Installing MIG Wire Spool and Adjusting Hub Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4-9. Connecting 1-Phase Input Power For 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4-10. Electrical Service Guide For 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4-11. Extension Cord Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4-12. Selecting A Location And Connecting Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4-13. Threading Welding Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4-14. Installing Optional Gas Valve, Receptacle, And Barbed Fitting For Optional Spool Gun . . . . . . . . . . . 21
4-15. Connecting An Optional Spool Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SECTION 5 − OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5-1. Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5-2. Weld Parameter Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SECTION 6 − MAINTENANCE &TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6-1. Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6-2. Unit Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6-3. Changing Drive Roll and Wire Inlet Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6-4. Aligning Drive Rolls and Wire Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6-5. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SECTION 7 − ELECTRICAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
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TABLE OF CONTENTS
SECTION 8 − MIG WELDING (GMAW) GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8-1. Typical MIG Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8-2. Typical MIG Process Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8-3. Holding And Positioning Welding Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8-4. Conditions That Affect Weld Bead Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8-5. Gun Movement During Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8-6. Poor Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8-7. Good Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8-8. Troubleshooting − Excessive Spatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8-9. Troubleshooting − Porosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8-10. Troubleshooting − Excessive Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8-11. Troubleshooting − Lack Of Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8-12. Troubleshooting − Incomplete Fusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8-13. Troubleshooting − Burn-Through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8-14. Troubleshooting − Waviness Of Bead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8-15. Troubleshooting − Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8-16. Common MIG Shielding Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8-17. Troubleshooting Guide For Semiautomatic Welding Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
SECTION 9 − PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
OPTIONS AND ACCESSORIES
WARRANTY
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SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
som _2007−04
7
Protect yourself and others from injury — read and follow these precautions.
1-1. Symbol Usage
DANGER! − Indicates a hazardous situation which, if
. Indicates special instructions.
not avoided, will result in death or serious injury. The
possible hazards are shown in the adjoining symbols
or explained in the text.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury. The possible
hazards are shown in the adjoining symbols or ex-
plained in the text.
This group of symbols means Warning! Watch Out! ELECTRIC
SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult sym-
bols and related instructions below for necessary actions to avoid the
hazards.
NOTICE − Indicates statements not related to personal injury.
1-2. Arc Welding Hazards
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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
groundedreceptacle outlet.
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
follow all Safety Standards.
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When making input connections, attach proper grounding conduc-
tor first − double-check connections.
Keep cords dry, free of oil and grease, and protected from hot metal
and sparks.
Only qualified persons should install, operate, maintain, and
repair this unit.
Frequently inspect input power cord for damage or bare wiring −
replace cord immediately if damaged − bare wiring can kill.
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Turn off all equipment when not in use.
During operation, keep everybody, especially children, away.
Do not use worn, damaged, undersized, or poorly spliced cables.
Do not drape cables over your body.
If earth grounding of the workpiece is required, ground it directly
with a separate cable.
ELECTRIC SHOCK can kill.
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Do not touch electrode if you are in contact with the work, ground,
or another electrode from a different machine.
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
Do not touch electrode holders connected to two welding ma-
chines at the same time since double open-circuit voltage will be
present.
power circuit and machine internal circuits are also
live when power is on. In semiautomatic or automatic wire welding, the
wire, wire reel, drive roll housing, and all metal parts touching the
welding wire are electrically live. Incorrectly installed or improperly
groundedequipment is a hazard.
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Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
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Do not touch live electrical parts.
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Wear a safety harness if working above floor level.
Keep all panels and covers securely in place.
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.
Clamp work cable with good metal-to-metal contact to workpiece
or worktable as near the weld as practical.
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Insulate work clamp when not connected to workpiece to prevent
contact with any metal object.
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Do not use AC output in damp areas, if movement is confined, or if
there is a danger of falling.
Do not connect more than one electrode or work cable to any
single weld output terminal.
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Use AC output ONLY if required for the welding process.
If AC output is required, use remote output control if present on
unit.
SIGNIFICANT DC VOLTAGE exists in inverter-type
welding power sources after removal of input
power.
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Additionalsafety precautions are required when any of the follow-
ing electrically hazardous conditions are present: in damp
locations or while wearing wet clothing; on metal structures such
as floors, gratings, or scaffolds; when in cramped positions such
as sitting, kneeling, or lying; or when there is a high risk of unavoid-
able or accidental contact with the workpiece or ground. For these
conditions, use the following equipment in order presented: 1) a
semiautomaticDC constant voltage (wire) welder, 2) a DC manual
(stick) welder, or 3) an AC welder with reduced open-circuit volt-
age. In most situations, use of a DC, constant voltage wire welder
is recommended. And, do not work alone!
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Turn Off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
HOT PARTS can cause severe burns.
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Do not touch hot parts bare handed.
Allow cooling period before working on gun or
torch.
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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).
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To handle hot parts, use proper tools and/or
wear heavy, insulated welding gloves and
clothing to prevent burns.
Properly install and ground this equipment according to its
Owner’s Manual and national, state, and local codes.
OM-232 386 Page 1
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Do not use welder to thaw frozen pipes.
FUMES AND GASES can be hazardous.
Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to your
health.
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Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding.
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Keep your head out of the fumes. Do not breathe the fumes.
After completion of work, inspect area to ensure it is free of sparks,
glowing embers, and flames.
If inside, ventilate the area and/or use local forced ventilation at the
arc to remove welding fumes and gases.
Use only correct fuses or circuit breakers. Do not oversize or by-
pass them.
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If ventilation is poor, wear an approved air-supplied respirator.
Read and understand the Material Safety Data Sheets (MSDSs)
and the manufacturer’s instructions for metals, consumables,
coatings, cleaners, and degreasers.
Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
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Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Always have a trained watch-
person nearby. Welding fumes and gases can displace air and
lower the oxygen level causing injury or death. Be sure the breath-
ing air is safe.
FLYING METAL or DIRT can injure eyes.
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Welding, chipping, wire brushing, and grinding
cause sparks and flying metal. As welds cool,
they can throw off slag.
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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.
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Wear approved safety glasses with side
shields even under your welding helmet.
Do not weld on coated metals, such as galvanized, lead, or
cadmiumplated steel, unless the coating is removed from the weld
area, the area is well ventilated, and while wearing an air-supplied
respirator. The coatings and any metals containing these elements
can give off toxic fumes if welded.
BUILDUP OF GAS can injure or kill.
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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.
MAGNETIC FIELDS can affect Implanted
Medical Devices.
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.
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Wearers of Pacemakers and other Implanted
Medical Devices should keep away.
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Wear an approved welding helmet fitted with a proper shade of fil-
ter lenses to protect your face and eyes when welding or watching
(see ANSI Z49.1 and Z87.1 listed in Safety Standards).
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ImplantedMedical Device wearers should consult their doctor
and the device manufacturer before going near arc welding, spot
welding, gouging, plasma arc cutting, or induction heating
operations.
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Wear approved safety glasses with side shields under your
helmet.
Use protective screens or barriers to protect others from flash,
glare and sparks; warn others not to watch the arc.
NOISE can damage hearing.
Noise from some processes or equipment can
damagehearing.
Wear protective clothing made from durable, flame-resistant mate-
rial (leather, heavy cotton, or wool) and foot protection.
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Wear approved ear protection if noise level is
high.
WELDING can cause fire or explosion.
Welding on closed containers, such as tanks,
drums, or pipes, can cause them to blow up. Sparks
can fly off from the welding arc. The flying sparks, hot
workpiece, and hot equipment can cause fires and
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.
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.
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Protect compressed gas cylinders from excessive heat, mechani-
cal shocks, physical damage, slag, open flames, sparks, and arcs.
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Remove all flammables within 35 ft (10.7 m) of the welding arc. If
this is not possible, tightly cover them with approved covers.
Install cylinders in an upright position by securing to a stationary
support or cylinder rack to prevent falling or tipping.
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Do not weld where flying sparks can strike flammable material.
Protect yourself and others from flying sparks and hot metal.
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Keep cylinders away from any welding or other electrical circuits.
Never drape a welding torch over a gas cylinder.
Be alert that welding sparks and hot materials from welding can
easily go through small cracks and openings to adjacent areas.
Never allow a welding electrode to touch any cylinder.
Never weld on a pressurized cylinder − explosion will result.
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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.
Use only correct shielding gas cylinders, regulators, hoses, and fit-
tings designed for the specific application; maintain them and
associated parts in good condition.
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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).
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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.
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Do not weld where the atmosphere may contain flammable dust,
gas, or liquid vapors (such as gasoline).
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Use the right equipment, correct procedures, and sufficient num-
ber of persons to lift and move cylinders.
Connect work cable to the work as close to the welding area as
practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock, sparks, and fire
hazards.
Read and follow instructions on compressed gas cylinders,
associated equipment, and Compressed Gas Association (CGA)
publication P-1 listed in Safety Standards.
OM-232 386 Page 2
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1-3. Additional Symbols For Installation, Operation, And Maintenance
FIRE OR EXPLOSION hazard.
MOVING PARTS can cause injury.
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Do not install or place unit on, over, or near
combustiblesurfaces.
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Keep away from moving parts such as fans.
Keep all doors, panels, covers, and guards
closed and securely in place.
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Do not install unit near flammables.
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Do not overload building wiring − be sure power supply system is
properly sized, rated, and protected to handle this unit.
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Have only qualified persons remove doors, panels, covers, or
guards for maintenance as necessary.
Reinstall doors, panels, covers, or guards when maintenance is
finished and before reconnecting input power.
FALLING UNIT can cause injury.
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Use lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.
READ INSTRUCTIONS.
Use equipment of adequate capacity to lift and
support unit.
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Read Owner’s Manual before using or servic-
ing unit.
If using lift forks to move unit, be sure forks are
long enough to extend beyond opposite side of
unit.
Use only genuine replacement parts from the
manufacturer.
OVERUSE can cause OVERHEATING
H.F. RADIATION can cause interference.
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Allow cooling period; follow rated duty cycle.
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High-frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communicationsequipment.
Reduce current or reduce duty cycle before
starting to weld again.
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Do not block or filter airflow to unit.
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Have only qualified persons familiar with
electronic equipment perform this installation.
FLYING SPARKS can cause injury.
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The user is responsible for having a qualified electrician prompt-
ly correct any interference problem resulting from the installa-
tion.
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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.
If notified by the FCC about interference, stop using the
equipmentat once.
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Have the installation regularly checked and maintained.
D
Sparks can cause fires — keep flammables away.
Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.
STATIC (ESD) can damage PC boards.
D
D
Put on grounded wrist strap BEFORE handling
boards or parts.
ARC WELDING can cause interference.
Use proper static-proof bags and boxes to
store, move, or ship PC boards.
D
Electromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.
MOVING PARTS can cause injury.
D
Be sure all equipment in the welding area is
electromagneticallycompatible.
D
D
Keep away from moving parts.
Keep away from pinch points such as drive
rolls.
D
D
D
D
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 elec-
tronic equipment.
WELDING WIRE can cause injury.
Be sure this welding machine is installed and grounded
according to this manual.
D
D
Do not press gun trigger until instructed to do
so.
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.
Do not point gun toward any part of the body,
other people, or any metal when threading
welding wire.
OM-232 386 Page 3
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1-4. California Proposition 65 Warnings
For Gasoline Engines:
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.)
Engine exhaust contains chemicals known to the State of
California to cause cancer, birth defects, or other reproduc-
tive harm.
For Diesel Engines:
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
reproductiveharm. Wash hands after handling.
Diesel engine exhaust and some of its constituents are
known to the State of California to cause cancer, birth
defects, and other reproductive harm.
1-5. Principal Safety Standards
Safety inWelding, Cutting, and Allied Processes, ANSI Standard Z49.1,
from Global Engineering Documents (phone: 1-877-413-5184, website:
www.global.ihs.com).
Ontario, Canada L4W 5NS (phone: 800-463-6727 or in Toronto
416-747-4044,website: www.csa-international.org).
Safe Practice For Occupational And Educational Eye And Face Protec-
tion, ANSI Standard Z87.1, from American National Standards Institute,
25 West 43rd 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, Quincy, MA 02269-9101 (phone: 617-770-3000, web-
Recommended Safe Practices for the Preparation for Weldingand Cut-
ting of Containers and Piping, American Welding Society Standard
AWS F4.1, from Global Engineering Documents (phone:
1-877-413-5184,website: www.global.ihs.com).
NationalElectrical Code, NFPA Standard 70, from National Fire Protec-
tion Association, P.O. Box 9101, Quincy, MA 02269-9101 (phone:
OSHA, Occupational Safety and Health Standards for General Indus-
try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,
and Part 1926, Subpart J, from U.S. Government Printing Office, Super-
intendentof Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954
(phone: 1-866-512-1800) (there are 10 Regional Offices—phone for
Region 5, Chicago, is 312-353-2220, website: www.osha.gov).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 4221 Walney Road, 5th Floor,
Chantilly, VA 20151 (phone: 703-788-2700, website:www.cganet.com).
Code for Safety in Welding and Cutting, CSA Standard W117.2, from
CanadianStandards Association, Standards Sales, 5060 Mississauga,
1-6. EMF Information
Considerations About Welding And The Effects Of Low Frequency
Electric And Magnetic Fields
1. Keep cables close together by twisting or taping them, or using a
cable cover.
2. Arrange cables to one side and away from the operator.
3. Do not coil or drape cables around your body.
Welding current, as it flows through welding cables, will cause electro-
magnetic 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.
4. Keep welding power source and cables as far away from opera-
tor as practical.
5. Connect work clamp to workpiece as close to the weld as possi-
ble.
About Implanted Medical Devices:
ImplantedMedical Device wearers should consult their doctor and the
device manufacturer before performing or going near arc welding, spot
welding, gouging, plasma arc cutting, or induction heating operations.
If cleared by your doctor, then following the above procedures is recom-
mended.
To reduce magnetic fields in the workplace, use the following
procedures:
OM-232 386 Page 4
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SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION
fre_som_2007−04
7
Se protéger et protéger les autres contre le risque de blessure — lire et respecter ces consignes.
2-1. Symboles utilisés
DANGER! − Indique une situation dangereuse qui si on
. Indique des instructions spécifiques.
l’évite pas peut donner la mort ou des blessures graves.
Les dangers possibles sont montrés par les symboles
joints ou sont expliqués dans le texte.
Indique une situation dangereuse qui si on l’évite pas
peut donner la mort ou des blessures graves. Les dan-
gers possibles sont montrés par les symboles joints ou
sont expliqués dans le texte.
Ce groupe de symboles veut dire Avertissement! Attention! DANGER
DE CHOC ELECTRIQUE, PIECES EN MOUVEMENT, et PIECES
CHAUDES. Consulter les symboles et les instructions ci-dessous y
afférant pour les actions nécessaires afin d’éviter le danger.
NOTE − Indique des déclarations pas en relation avec des blessures
personnelles.
2-2. Dangers relatifs au soudage à l’arc
(à fil), 2) un poste à souder DC manuel (électrode) ou 3) un poste à
souder AC à tension à vide réduite. Dans la plupart des situations,
l’utilisation d’un poste à souder DC à fil à tension constante est re-
commandée.En outre, ne pas travailler seul !
Les symboles représentés ci-dessous sont utilisés dans ce ma-
nuel pour attirer l’attention et identifier les dangers possibles. En
présence de l’un de ces symboles, prendre garde et suivre les
instructions afférentes pour éviter tout risque. Les instructions
en matière de sécurité indiquées ci-dessous ne constituent
qu’un sommaire des instructions de sécurité plus complètes
fournies dans les normes de sécurité énumérées dans la Sec-
D
Couper l’alimentation ou arrêter le moteur avant de procéder à l’in-
stallation, à la réparation ou à l’entretien de l’appareil. Déverrouiller
l’alimentationselon la norme OSHA 29 CFR 1910.147 (voir nor-
mes de sécurité).
Installer le poste correctement et le mettre à la terre convenable-
ment selon les consignes du manuel de l’opérateur et les normes
nationales,provinciales et locales.
Toujours vérifier la terre du cordon d’alimentation. Vérifier et
s’assurer que le fil de terre du cordon d’alimentation est bien
raccordé à la borne de terre du sectionneur ou que la fiche du
cordon est raccordée à une prise correctement mise à la terre.
D
D
Seul un personnel qualifié est autorisé à installer, faire fonc-
tionner, entretenir et réparer cet appareil.
Pendant le fonctionnement, maintenir à distance toutes les
personnes,notamment les enfants de l’appareil.
D
D
En effectuant les raccordements d’entrée, fixer d’abord le conduc-
teur de mise à la terre approprié et contre-vérifier les connexions.
UNE DÉCHARGE ÉLECTRIQUE peut
entraîner la mort.
Les câbles doivent être exempts d’humidité, d’huile et de graisse;
protégez−les contre les étincelles et les pièces métalliques
chaudes.
Le contact d’organes électriques sous tension peut
provoquer des accidents mortels ou des brûlures
graves. Le circuit de l’électrode et de la pièce est
D
Vérifier fréquemment le cordon d’alimentation afin de s’assurer
qu’il n’est pas altéré ou à nu, le remplacer immédiatement s’il l’est.
Un fil à nu peut entraîner la mort.
sous tension lorsque le courant est délivré à la
sortie. Le circuit d’alimentation et les circuits internes de la machine
sont également sous tension lorsque l’alimentation est sur Marche.
Dans le mode de soudage avec du fil, le fil, le dérouleur, le bloc de
commande du rouleau et toutes les parties métalliques en contact
avec le fil sont sous tension électrique. Un équipement installé ou mis
à la terre de manière incorrecte ou impropre constitue un danger.
D
D
L’équipement doit être hors tension lorsqu’il n’est pas utilisé.
Ne pas utiliser des câbles usés, endommagés, de grosseur insuffi-
sante ou mal épissés.
D
D
Ne pas enrouler les câbles autour du corps.
D
D
Ne pas toucher aux pièces électriques sous tension.
Si la pièce soudée doit être mise à la terre, le faire directement
avec un câble distinct.
Porter des gants isolants et des vêtements de protection secs et
sans trous.
D
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
D
S’isoler de la pièce à couper et du sol en utilisant des housses ou
des tapis assez grands afin d’éviter tout contact physique avec la
pièce à couper ou le sol.
Ne pas toucher des porte électrodes connectés à deux machines
en même temps à cause de la présence d’une tension à vide dou-
blée.
Ne pas se servir de source électrique à courant électrique dans les
zones humides, dans les endroits confinés ou là où on risque de
tomber.
D
N’utiliser qu’un matériel en bon état. Réparer ou remplacer sur-le-
champ les pièces endommagées. Entretenir l’appareil
conformémentà ce manuel.
D
D
Se servir d’une source électrique à courant électrique UNIQUE-
MENT si le procédé de soudage le demande.
D
D
Porter un harnais de sécurité si l’on doit travailler au-dessus du sol.
Si l’utilisation d’une source électrique à courant électrique s’avère
nécessaire, se servir de la fonction de télécommande si l’appareil
en est équipé.
S’assurer que tous les panneaux et couvercles sont correctement
en place.
D
D’autres consignes de sécurité sont nécessaires dans les condi-
tions suivantes : risques électriques dans un environnement
humideou si l’on porte des vêtements mouillés ; sur des structures
métalliquestelles que sols, grilles ou échafaudages ; en position
coincée comme assise, à genoux ou couchée ; ou s’il y a un risque
élevé de contact inévitable ou accidentel avec la pièce à souder ou
le sol. Dans ces conditions, utiliser les équipements suivants,
dans l’ordre indiqué : 1) un poste à souder DC à tension constante
D
Fixer le câble de retour de façon à obtenir un bon contact métal-
métal avec la pièce à souder ou la table de travail, le plus près
possible de la soudure.
D
D
Isoler la pince de masse quand pas mis à la pièce pour éviter le
contact avec tout objet métallique.
Ne pas raccorder plus d’une électrode ou plus d’un câble de
masse à une même borne de sortie de soudage.
OM-232 386 Page 5
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Il reste une TENSION DC NON NÉGLIGEABLE dans
les sources de soudage onduleur quand on a
coupé l’alimentation.
LE SOUDAGE peut provoquer un in
cendie ou une explosion.
Le soudage effectué sur des conteneurs fermés tels
que des réservoirs, tambours ou des conduites peu
provoquer leur éclatement. Des étincelles peuven
D
Arrêter les convertisseurs, débrancher le courant électrique et
déchargerles condensateurs d’alimentation selon les instructions
indiquées dans la partie Entretien avant de toucher les pièces.
être projetées de l’arc de soudure. La projection d’étincelles, des pièce
chaudes et des équipements chauds peut provoquer des incendies e
des brûlures. Le contact accidentel de l’électrode avec des objets
métalliquespeut provoquer des étincelles, une explosion, un surchauf
fement ou un incendie. Avant de commencer le soudage, vérifier e
s’assurer que l’endroit ne présente pas de danger.
DES PIÈCES CHAUDES peuvent
provoquer des brûlures graves.
D
Ne pas toucher à mains nues les parties
chaudes.
D
Prévoir une période de refroidissement avant de
travailler à l’équipement.
D
Déplacer toutes les substances inflammables à une distance de
10,7 m de l’arc de soudage. En cas d’impossibilité les recouvrir
soigneusementavec des protections homologués.
D
Ne pas toucher aux pièces chaudes, utiliser les outils recomman-
dés et porter des gants de soudage et des vêtements épais pour
éviter les brûlures.
D
D
D
Ne pas souder dans un endroit là où des étincelles peuvent tomber
sur des substances inflammables.
Se protéger et d’autres personnes de la projection d’étincelles et
de métal chaud.
LES FUMÉES ET LES GAZ peuvent être
dangereux.
Des étincelles et des matériaux chauds du soudage peuvent
facilement passer dans d’autres zones en traversant de petites
fissures et des ouvertures.
Le soudage génère des fumées et des gaz. Leur
inhalationpeut être dangereux pour votre santé.
D
D
D
Surveiller tout déclenchement d’incendie et tenir un extincteur à
proximité.
D
D
Eloigner votre tête des fumées. Ne pas respirer les fumées.
À l’intérieur, ventiler la zone et/ou utiliser une ventilation forcée au
niveau de l’arc pour l’évacuation des fumées et des gaz de soudage.
Le soudage effectué sur un plafond, plancher, paroi ou séparation
peut déclencher un incendie de l’autre côté.
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 nor-
mes de sécurité).
D
D
Si la ventilation est médiocre, porter un respirateur anti-vapeurs
approuvé.
Lire et comprendre les spécifications de sécurité des matériaux
(MSDS) et les instructions du fabricant concernant les métaux, les
consommables, les revêtements, les nettoyants et les dégrais-
seurs.
D
D
Ne soudez pas si l’air ambiant est chargé de particules, gaz, ou va-
peurs inflammables (vapeur d’essence, par exemple).
Brancher le câble de masse sur la pièce le plus près possible de la
zone de soudage pour éviter le transport du courant sur une
longue distance par des chemins inconnus éventuels en provo-
quant des risques d’électrocution, d’étincelles et d’incendie.
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
D
D
Ne pas utiliser le poste de soudage pour dégeler des conduites ge-
lées.
D
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 for-
mer des gaz hautement toxiques et irritants.
En cas de non utilisation, enlever la baguette d’électrode du porte-
électrode 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.
Ne pas souder des métaux munis d’un revêtement, tels que l’acier
galvanisé, plaqué en plomb ou au cadmium à moins que le revête-
ment n’ait été enlevé dans la zone de soudure, que l’endroit soit
bien ventilé, et en portant un respirateur à alimentation d’air. Les
revêtementset tous les métaux renfermant ces éléments peuvent
dégager des fumées toxiques en cas de soudage.
D
D
D
D
D
D
Avant de souder, retirer toute substance combustible de vos po-
ches telles qu’un allumeur au butane ou des allumettes.
Une fois le travail achevé, assurez−vous qu’il ne reste aucune
trace d’étincelles incandescentes ni de flammes.
Utiliser exclusivement des fusibles ou coupe−circuits appropriés.
Ne pas augmenter leur puissance; ne pas les ponter.
LES RAYONS DE L’ARC peuvent pro
voquer des brûlures dans les yeux e
sur la peau.
Une fois le travail achevé, assurez−vous qu’il ne reste aucune
trace d’étincelles incandescentes ni de flammes.
Le rayonnement de l’arc du procédé de soudage
génère des rayons visibles et invisibles intenses
Utiliser exclusivement des fusibles ou coupe−circuits appropriés.
Ne pas augmenter leur puissance; ne pas les ponter.
(ultraviolets et infrarouges) susceptibles de provoquer des brûlures
dans les yeux et sur la peau. Des étincelles sont projetées pendant le
soudage.
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.
D
Porter un casque de soudage approuvé muni de verres filtrants
approprié pour protéger visage et yeux pendant le soudage
(voir ANSI Z49.1 et Z87.1 énuméré dans les normes de sécurité).
DES PIECES DE METAL ou DES SA-
LETES peuvent provoquer des bles-
sures dans les yeux.
D
D
Porter des lunettes de sécurité avec écrans latéraux même sous
votre casque.
Avoir recours à des écrans protecteurs ou à des rideaux pour
protéger les autres contre les rayonnements les éblouissements
et les étincelles ; prévenir toute personne sur les lieux de ne pas
regarder l’arc.
D
Le soudage, l’écaillement, le passage de la pièce à la brosse en
fil de fer, et le meulage génèrent des étincelles et des particules
métalliquesvolantes. Pendant la période de refroidissement des
soudures, elles risquent de projeter du laitier.
D
Porter des vêtements confectionnés avec des matières résistan-
tes et ignifuges (cuir, coton lourd ou laine) et des bottes de
protection.
D
Porter des lunettes de sécurité avec écrans latéraux ou un écran
facial.
OM-232 386 Page 6
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D
D
D
Protéger les bouteilles de gaz comprimé d’une chaleur excessive,
des chocs mécaniques, des dommages physiques, du laitier, des
flammes ouvertes, des étincelles et des arcs.
LES ACCUMULATIONS DE GAZ
risquent de provoquer des blessures
ou même la mort.
Placer les bouteilles debout en les fixant dans un support station-
naire ou dans un porte-bouteilles pour les empêcher de tomber ou
de se renverser.
D
Fermer l’alimentation du gaz protecteur en cas
de non-utilisation.
D
Veiller toujours à bien aérer les espaces confi-
nés ou se servir d’un respirateur d’adduction
d’air homologué.
Tenir les bouteilles éloignées des circuits de soudage ou autres
circuits électriques.
LES CHAMPS MAGNETIQUES peuv-
ent affecter des implants médicaux.
D
D
Ne jamais placer une torche de soudage sur une bouteille à gaz.
D
Porteur de simulateur cardiaque ou autre im-
plants médicaux, rester à distance.
Une électrode de soudage ne doit jamais entrer en contact avec
une bouteille.
D
Les porteurs d’implants doivent d’abord consulter leur médecin
avant de s’approcher des opérations de soudage à l’arc, de sou-
dage par points, de gougeage, du coupage plasma ou de chauf-
fage par induction.
D
D
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.
LE BRUIT peut endommager l’ouïe.
Le bruit des processus et des équipements peut
affecter l’ouïe.
D
D
D
D
Détourner votre visage du détendeur-régulateur lorsque vous
ouvrez la soupape de la bouteille.
D
Porter des protections approuvées pour les
oreilles si le niveau sonore est trop élevé.
Le couvercle du détendeur doit toujours être en place, sauf lorsque
la bouteille est utilisée ou qu’elle est reliée pour usage ultérieur.
LES BOUTEILLES peuvent exploser
si elles sont endommagées.
Utiliser les équipements corrects, les bonnes procédures et suffi-
samment de personnes pour soulever et déplacer les bouteilles.
Des bouteilles de gaz protecteur contiennent du gaz
sous haute pression. Si une bouteille est endomma-
gée, elle peut exploser. Du fait que les bouteilles de
gaz font normalement partie du procédé de sou-
Lire et suivre les instructions sur les bouteilles de gaz comprimé,
l’équipement connexe et le dépliant P-1 de la CGA (Compressed
Gas Association) mentionné dans les principales normes de sécu-
rité.
dage, les manipuler avec précaution.
2-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance
Risque D’INCENDIE OU D’EXPLO-
SION.
LES ÉTINCELLES VOLANTES ris-
quent de provoquer des blessures.
D
Ne pas placer l’appareil sur, au-dessus ou
à proximité de surfaces inflammables.
D
Porter un écran facial pour protéger le visage et
les yeux.
D
Ne pas installer l’appareil à proximité de pro-
duits inflammables.
D
Affûter l’électrode au tungstène uniquement à la
meuleuse dotée de protecteurs. Cette manœuv-
re est à exécuter dans un endroit sûr lorsque l’on
porte l’équipement homologué de protection du
visage, des mains et du corps.
D
Ne pas surcharger l’installation électrique − s’assurer que
l’alimentationest correctement dimensionnée et protégée avant
de mettre l’appareil en service.
D
Les étincelles risquent de causer un incendie − éloigner toute sub-
stance inflammable.
LA CHUTE DE L’APPAREIL peut
blesser.
D
Utiliser l’anneau de levage uniquement pour
soulever l’appareil, NON PAS les chariots, les
bouteilles de gaz ou tout autre accessoire.
LES CHARGES ÉLECTROSTATI-
QUES peuvent endommager les
circuits imprimés.
D
Utiliser un équipement de levage de capacité
suffisante pour lever l’appareil.
D
Établir la connexion avec la barrette de terre
avant de manipuler des cartes ou des pièces.
D
En utilisant des fourches de levage pour déplacer l’unité, s’assu-
rer que les fourches sont suffisamment longues pour dépasser
du côté opposé de l’appareil.
D
Utiliser des pochettes et des boîtes antistati-
ques pour stocker, déplacer ou expédier des
cartes de circuits imprimes.
L’EMPLOI EXCESSIF peut SUR-
CHAUFFER L’ÉQUIPEMENT.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D
Prévoir une période de refroidissement ; re-
specter le cycle opératoire nominal.
D
D
Ne pas s’approcher des organes mobiles.
D
Réduire le courant ou le facteur de marche
avant de poursuivre le soudage.
Ne pas s’approcher des points de coincement
tels que des rouleaux de commande.
D
Ne pas obstruer les passages d’air du poste.
OM-232 386 Page 7
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LES FILS DE SOUDAGE peuvent
provoquer des blessures.
LE RAYONNEMENT HAUTE FRÉ-
QUENCE (H.F.) risque de provoquer
des interférences.
D
Ne pas appuyer sur la gâchette avant d’en
avoir reçu l’instruction.
D
Le rayonnement haute fréquence (H.F.) peut
provoquer des interférences avec les équipe-
ments de radio−navigation et de communica-
tion, les services de sécurité et les ordinateurs.
D
Ne pas diriger le pistolet vers soi, d’autres per-
sonnes ou toute pièce mécanique en enga-
geant le fil de soudage.
D
Demander seulement à des personnes qualifiées familiarisées
avec des équipements électroniques de faire fonctionner l’installa-
tion.
DES ORGANES MOBILES peuvent
provoquer des blessures.
D
D
L’utilisateur est tenu de faire corriger rapidement par un électricien
qualifié les interférences résultant de l’installation.
Si le FCC signale des interférences, arrêter immédiatement l’ap-
pareil.
D
S’abstenirde toucher des organes mobiles tels
que des ventilateurs.
D
Maintenirfermés et verrouillés les portes, pan-
neaux, recouvrements et dispositifs de protec-
tion.
LE SOUDAGE À L’ARC risque de
provoquer des interférences.
D
D
Seules des personnes qualifiées sont autorisées à enlever les
portes, panneaux, recouvrements ou dispositifs de protection
pour l’entretien.
D
L’énergie électromagnétique risque de provo-
quer des interférences pour l’équipement élec-
tronique sensible tel que les ordinateurs et l’é-
quipement commandé par ordinateur tel que
les robots.
Remettreles portes, panneaux, recouvrements ou dispositifs de
protection quand l’entretien est terminé et avant de rebrancher
l’alimentation électrique.
D
Veiller à ce que tout l’équipement de la zone de soudage soit
compatibleélectromagnétiquement.
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).
LIRE LES INSTRUCTIONS.
D
Lisez le manuel d’instructions avant l’utilisation
ou la maintenance de l’appareil.
D
D
D
Veiller à souder à une distance de 100 mètres de tout équipe-
ment électronique sensible.
D
N’utiliser que les pièces de rechange recom-
mandées par le constructeur.
Veiller à ce que ce poste de soudage soit posé et mis à la terre
conformément à ce mode d’emploi.
D
Effectuer régulièrement le contrôle et l’entretien de l’installation.
En cas d’interférences après avoir pris les mesures précéden-
tes, il incombe à l’utilisateur de prendre des mesures supplé-
mentairestelles que le déplacement du poste, l’utilisation de câ-
bles blindés, l’utilisation de filtres de ligne ou la pose de protec-
teurs dans la zone de travail.
D
Maintenir soigneusement fermés les portes et les panneaux des
sources de haute fréquence, maintenir les éclateurs à une distan-
ce correcte et utiliser une terre et un blindage pour réduire les
interférences éventuelles.
2-4. Proposition californienne 65 Avertissements
Pour les moteurs à essence :
Les équipements de soudage et de coupage produisent des
fumées et des gaz qui contiennent des produits chimiques
dont l’État de Californie reconnaît qu’ils provoquent des mal-
formations congénitales et, dans certains cas, des cancers.
(Code de santé et de sécurité de Californie, chapitre 25249.5
et suivants)
Les gaz d’échappement des moteurs contiennent des pro-
duits chimiques dont l’État de Californie reconnaît qu’ils
provoquent des cancers et des malformations congénitales
ou autres problèmes de procréation.
Pour les moteurs diesel :
Les batteries, les bornes et autres accessoires contiennent
du plomb et des composés à base de plomb, produits chimi-
ques dont l’État de Californie reconnaît qu’ils provoquent des
cancers et des malformations congénitales ou autres
problèmesde procréation. Se laver les mains après manipu-
lation.
Les gaz d’échappement des moteurs diesel et certains de
leurs composants sont reconnus par l’État de Californie com-
me provoquant des cancers et des malformations
congénitalesou autres problèmes de procréation.
OM-232 386 Page 8
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2-5. Principales normes de sécurité
Safety inWelding, Cutting, and Allied Processes, ANSI Standard Z49.1,
de Global Engineering Documents (téléphone : 1-877-413-5184, site
Internet : www.global.ihs.com).
L4W 5NS (téléphone : 800-463-6727 ou à Toronto 416-747-4044, site
Internet : www.csa-international.org).
Safe Practice For Occupational And Educational Eye And Face Protec-
tion, ANSI Standard Z87.1, de American National Standards Institute,
11 West 43rd Street, New York, NY 10036-8002 (téléphone :
212-642-4900,site Internet : www.ansi.org).
RecommendedSafe Practices for the Preparation for Welding and Cut-
ting of Containers and Piping, American Welding Society Standard
AWS F4.1 de Global Engineering Documents (téléphone
1-877-413-5184,site Internet : www.global.ihs.com).
:
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, NFPA Standard 51B, de National Fire Protection Association,
P.O. Box 9101, Quincy, MA 02269-9101 (téléphone : 617-770-3000,
site Internet : www.nfpa.org).
National Electrical Code, NFPA Standard 70, de National Fire Protec-
tion Association, P.O. Box 9101, Quincy, MA 02269-9101 (téléphone :
617-770-3000, site Internet : www.nfpa.org).
OSHA, Occupational Safety and Health Standards for General Indus-
try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,
and Part 1926, Subpart J, de U.S. Government Printing Office, Superin-
tendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954
(téléphone: 1-866-512-1800) (il y a 10 bureaux régionaux−−le télépho-
ne de la région 5, Chicago, est 312-353-2220, site Internet :
www.osha.gov).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
de Compressed Gas Association, 4221 Walney Road, 5th Floor, Chan-
tilly, VA 20151 (téléphone
www.cganet.com).
:
703-788-2700, site Internet
:
Code for Safety in Welding and Cutting, CSA Standard W117.2, de
CanadianStandards Association, 5060 Mississauga, Ontario, Canada
2-6. Information EMF
Considérationssur le soudage et les effets de basse fréquence et des
champs magnétiques et électriques.
1. Garder les câbles ensemble, les torsader, les scotcher, ou les
recouvrir d’une housse.
2. Disposer les câbles d’un côté et à distance de l’opérateur.
3. Ne pas courber pas et ne pas entourer pas les câbles autour de
votre corps.
4. Garder le poste de soudage et les câbles le plus loin possible de
vous.
Le courant de soudage, pendant son passage dans les câbles de sou-
dage, causera des champs électromagnétiques. Il y a eu et il y a encore
un certain souci à propos de tels champs. Cependant, après avoir exa-
miné 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
magnétiqueset champs électriques à haute fréquence représente un
risque à la santé humaine ». Toutefois, des études sont toujours en
cours et les preuves continuent à être examinées. En attendant que les
conclusions finales de la recherche soient établies, il vous serait
souhaitablede réduire votre exposition aux champs électromagnéti-
ques pendant le soudage ou le coupage.
5. Connecter la pince sur la pièce aussi près que possible de la
soudure.
En ce qui concerne les implants médicaux :
Les porteurs d’implants doivent d’abord consulter leur médecin avant
de s’approcher des opérations de soudage à l’arc, de soudage par
points, de gougeage, du coupage plasma ou de chauffage par induc-
tion. Si le médecin approuve, il est recommandé de suivre les
procédures précédentes.
Pour réduire les champs magnétiques sur le poste de travail, appliquer
les procédures suivantes :
OM-232 386 Page 9
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OM-232 386 Page 10
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SECTION 3 − DEFINITIONS
3-1. Symbols And Definitions
Do Not Switch
While Welding
Wire Feed
Output
Duty Cycle
On
X
Volts
Increase
Off
V
Gas Metal Arc
Welding (GMAW)
Gun
Wire Feed Spool
Gun
Gas Input
Gas Output
Rated No-Load
Voltage (Average)
Voltage Input
Press To Reset
U0
SECTION 4 − INSTALLATION
4-1. Specifications
A. 115 VAC
Amperes Input at Rated
Maximum Open-Cir-
cuit Voltage DC
Rated Welding
Output
Load Output 115 V, 60 Hz,
Single-Phase
Amperage Range
KVA
KW
90 A @ 18.0 Volts DC, 20%
Duty Cycle
32
24.8
2.78
2.23
30 − 135
B. 230 VAC
Amperes Input at Rated
Load Output 230 V, 50/60
Hz, Single-Phase
Rated Welding
Output
Maximum Open-Cir-
cuit Voltage DC
Amperage Range
KVA
KW
150 A @ 23 Volts DC, 40%
Duty Cycle
30 − 175
32
25.0
5.74
4.93
C. General Specifications
Wire Feed
Speed
Maximum
Spool Size
Net Weight
Without Gun
Wire Type and Diameter
Dimensions
Solid/Stainless
Flux Cored
Aluminum
50 − 700 IPM
(1.3 − 17.8
m/min)
12 in (305 mm)
Diameter
H: 30 in (762 mm)
W: 19 in (483 mm)
D: 40 in (1016 mm)
158 lb
(72 kg)
.023 − .035 in
(0.6 − 0.9 mm)
.030 − .035 in
(0.8 − 0.9 mm)
.030 − .035 in
(0.8 − 0.9 mm)
OM-232 386 Page 11
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4-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
A. 115 VAC
NOTICE − Exceeding duty cycle
can damage unit or gun and void
warranty.
20% duty cycle at 90 amps
2 Minutes Welding
8 Minutes Resting
B. 230 VAC
40% duty cycle at 150 amps
4 Minutes Welding
6 Minutes Resting
Overheating
A or V
0
15
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 124 655 / 220 896-A
OM-232 386 Page 12
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4-3. Volt-Ampere Curves
The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.
35
30
.Ranges 4, 5, and 6 apply to 230
VAC only.
25
20
Range 6
Range 5
Range 4
Range 3
Range 2
Range 1
15
10
5
0
0
50
100
150
200
250
DC AMPERES
ssb1.1 10/91 − 199 212
4-4. Connecting To Weld Output Terminals
4
1
Do not place
anything between
weld cable terminal
and copper bar.
2
3
Tools Needed:
3/4 in (19 mm)
803 778-A
Correct Installation
Incorrect Installation
1
2
3
4
Weld Output Terminal
output terminal and secure with nut so that
weld cable terminal is tight against copper
bar. Do not place anything between weld
cable terminal and copper bar. Make
sure that the surfaces of the weld cable
terminal and copper bar are clean.
!
Turn off power before connecting to
weld output terminals.
Supplied Weld Output Terminal Nut
Weld Cable Terminal
Copper Bar
Failure to properly connect weld
cables may cause excessive heat
and start a fire, or damage your ma-
chine.
Remove supplied nut from weld output ter-
minal. Slide weld cable terminal onto weld
OM-232 386 Page 13
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4-5. Installing Work Cable And Clamp
1
2
Work Cable
Boot
Route cable through front panel
opening. Slide boot onto work
cable.
3
Negative (−) Output Terminal
Connect cable to terminal and
cover connection with boot.
Close door.
1
2
3
Tools Needed:
3/4 in
804 909-A
4-6. Setting Gun Polarity For Wire Type
1
Polarity Changeover Label
Information
Changing Polarity
Always read and follow manufac-
ture’s recommended polarity.
Wire Drive
Work Clamp Lead
Assembly Lead
1
D
D
+
-
Positive Terminal
Negative Terminal
Shown as shipped − Electrode Positive (DCEP): For solid steel,
stainless steel, aluminum, or flux core with gas wires (GMAW).
Electrode Negative (DCEN): Reverse lead connections at
terminals from that shown above for gasless flux core wires
(FCAW). Drive assembly becomes negative.
3/4, 11/16 in
Ref. 190 821-A
OM-232 386 Page 14
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4-7. Installing Gas Supply
Obtain gas cylinders and chain to
running gear, wall, or other
stationary support so cylinders
cannot fall and break off valve.
1
1
2
Cap
2
Cylinder Valve
Remove cap, stand to side of valve,
and open valve slightly. Gas flow
blows dust and dirt from valve.
Close valve.
3
4
7
3
4
Cylinder
Regulator/Flowmeter
Argon Gas Or Mixed Gas
1
Install so face is vertical.
5
5
Regulator/Flowmeter Gas
Hose Connection
6
Welding Power Source Gas
Hose Connection For MIG
Gun
2
Connect gas hose between
regulator/flowmeter gas hose
connection, and fitting on rear of
welding power source.
3
8
9
7
Gas Flow Adjustment Control
Typical flow rate is 25 cfh (cubic feet
per hour). Check wire
CO Gas
2
manufacturer’s recommended flow
rate.
8
CO2 Adapter (Customer
Supplied)
9
O-Ring (Customer Supplied)
Install adapter with O-ring between
regulator/flowmeter and
cylinder.
CO
2
6
Rear Panel
Tools Needed:
1-1/8, 5/8 in
Ref. 804 654-A / Ref. 804 898-A
OM-232 386 Page 15
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4-8. Installing MIG Wire Spool and Adjusting Hub Tension
Use compression spring
with 8 in (200 mm) spools.
When a slight force is needed
to turn spool, tension is set.
To install either a 1 lb or 2 lb wire
spool, follow the procedure as
shown in the illustration.
Installing 1 Or 2 lb Wire Spool
Spindle
Install these
components
onto spindle.
Spindle
Order extra spring
Part No. 186 437
Remove these
components
from spindle.
Tools Needed:
15/16 in
072573-B / 802 922
OM-232 386 Page 16
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4-9. Connecting 1-Phase Input Power For 230 VAC
Installationmust meet all National
and Local Codes − have only
qualified persons make this
installation.
1
5
!
Disconnect and lockout/tagout
input power before connecting
input conductors from unit.
=GND/PE Earth Ground
7
Always connect green or green/
yellow conductor to supply
grounding terminal first, and never
to a line terminal.
4
1
2
Black And White Input Conductor
(L1 And L2)
6
Green Or Green/Yellow Grounding
Conductor
3
4
Input Power Cord.
L1
L2
1
Disconnect Device (switch shown in
the OFF position)
2
5
6
Disconnect Device Grounding
Terminal
Disconnect Device Line Terminals
Connect green or green/yellow grounding
conductor to disconnect device grounding
terminal first.
3
Connect input conductors L1 and L2 to
disconnect device line terminals.
8
7
Over-Current Protection
Select type and size of over-current
disconnect switch shown).
L1
L2
8
Receptacle (NEMA 6-50R)
Customer Supplied
Close and secure door on disconnect
device. Remove lockout/tagout device,
and place switch in the On position.
230 VAC, 1
Tools Needed:
803 766-B / Ref. 802 443-A
OM-232 386 Page 17
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4-10. Electrical Service Guide For 230 VAC
Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard. These
recommendationsare for a dedicated branch circuit that applies to the rated output and duty cycle of the welding power source.
60 Hz Single Phase
Input Voltage
230
25
Input Amperes At Rated Output
Max Recommended Standard Fuse Rating In Amperes
1
2
3
Circuit Breaker , Time-Delay
30
35
12
Normal Operating
4
Min Input Conductor Size In AWG
79
(24)
Max Recommended Input Conductor Length In Feet (Meters)
4
Min Grounding Conductor Size In AWG
12
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 Choose a circuit breaker with time-current curves comparable to a Time Delay Fuse.
2 “Time-Delay” fuses are UL class “RK5” .
3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and
above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
4-11. Extension Cord Data
.When calculating max. cord length, remember to include conductor length from line disconnect device to input power receptacle.
Input Power
Phase
Input Voltage
115 V
Hertz
60
Conductor Size
10 AWG
Max. Cord Length
34 ft (10 m)
1
1
230 V
60
12 AWG
79 ft (24 m)
OM-232 386 Page 18
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4-12. Selecting A Location And Connecting Input Power
Do Not cut off power cord connector and rewire. The power cord
connector and plugs will work with standard NEMA receptacles.
Modifying power cord, connector, and plugs will void product
warranty.
18 in (457 mm) of
space for airflow
Do not move or operate unit
where it could tip.
3
5
7
4
6
9
1
8
2
Ref. 804 898-A
Supply correct input power.
8
Receptacle − NEMA Type 6-50R
(Customer Supplied)
Special installation may be required
where gasoline or volatile liquids
are present − see NEC Article 511 or
CEC Section 20.
2
3
4
Power Cord Connector
Select plug for power supply receptacle
available at site. Install plug onto power
cord adapter. As threaded collar is
tightened, push plug onto adapter until
collar is completely tight.
Plug − NEMA Type 5-15P
Receptacle − NEMA Type 5-15R
(Customer Supplied)
For 115 volts ac input power, a 15 or 20
ampere individual branch circuit protected
by time-delay fuses or circuit breaker is
required.For 230 volts ac input power, see
5
6
Plug − NEMA Type 5-20P (Optional)
Connect plug to receptacle.
Receptacle NEMA Type 5-20R
(Customer Supplied)
9
Cylinder Support Bracket
Holes in the bracket provide a location to
store the unused power cord plugs.
1
Rating Label
7
Plug − NEMA Type 6-50P
OM-232 386 Page 19
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4-13. Threading Welding Wire
1
2
3
4
5
6
7
Wire Spool
Welding Wire
Inlet Wire Guide
Pressure Adjustment Knob
Drive Roll
4
Outlet Wire Guide
Gun Conduit Cable
Lay gun cable out straight.
7
Tools Needed:
1
2
3
6
5
.Hold wire tightly to keep it
from unraveling.
6 in
(150 mm)
Open pressure assembly.
Pull and hold wire; cut off end.
Push wire thru guides into gun;
continue to hold wire.
.Use pressure indicator
Tighten
scale to set a desired
drive roll pressure.
Pressure
Indicator
Scale
1
2
3
4
Close and tighten pressure
assembly, and let go of wire.
Remove gun nozzle and contact tip.
Turn On.
Tighten
1
2
3
4
WOOD
Press gun trigger until wire
comes out of gun. Reinstall
contact tip and nozzle
Feed wire to check drive roll pressure.
Tighten knob enough to prevent slipping.
Cut off wire. Close
and latch door.
Ref. 804 897-A
OM-232 386 Page 20
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4-14. Installing Optional Gas Valve, Receptacle, And Barbed Fitting For Optional Spool
Gun
1
7
6
3
2
4
5
6
8
2
804 990-A
Tools Needed:
1/4 in
9/16 in
6
7
8
Circuit Board PC1
Receptacle RC1
Receptacle RC2
valve and barbed fitting. Secure with hose
clamps.
!
Turn Off unit, and disconnect input
power.
Remove wrapper.
Remove snap-in blank from front panel,
and Install supplied 4-position receptacle.
1
2
3
Rear Panel
Remove snap-in blank from rear panel, and
install supplied gas valve.
Connect plug from 4-position receptacle
wiring harness into receptacle RC2.
Snap-in Blank Location
Center Baffle Barbed Fitting Hole
Location
Connect plug from gas valve wiring
harness into receptacle RC1.
Connect capacitors to center baffle ground
clip.
4
5
Front Panel
Install supplied barbed fitting into center
baffle hole. Connect gas hose between gas
Center Baffle Ground Clip
Reinstall wrapper.
OM-232 386 Page 21
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4-15. Connecting An Optional Spool Gun
1
Barbed Fitting
.If spool gun gas hose is
equipped with a pre-installed
barbed fitting, cut off fitting from
end of hose.
1
Connect spool gun gas hose to
barbed fitting.
2
Gun Trigger Plug
Insert plug into receptacle with
spool gun symbol, and tighten
threaded collar.
2
3
4
Negative (−) Output Terminal
Positive (+) Output Terminal
Connect weld cable from spool gun
to positive output terminal.
4
3
Close door.
804 922-A
OM-232 386 Page 22
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SECTION 5 − OPERATION
5-1. Controls
1
2
3
Ref. 226 649-C
1
Voltage Control
2
Wire Speed Control
3
Over Temp Light
Set Wire Speed control according to the
parameterchart. Increase or decrease wire
speed to obtain desired bead profile and
travel speed.
Set Voltage control according to the
parameter chart for good starting point.
Turn control clockwise to increase voltage.
If unit overheats, light turns on and output
stops. Allow unit to cool before resuming
operation.
OM-232 386 Page 23
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5-2. Weld Parameter Chart
*Line voltage can affect weld output, settings on this chart are starting values only. You may need to adjust
voltage and wire feed speed to optimize your settings.
Input Line
Voltage*
Parameter
Chart Settings
Higher
e.g. 240
Volts AC
Weld Will Be
Hotter
Lower Settings
Use Parameter
Chart
230 Volts AC
Weld Will Be
Colder
Raise Settings
Lower
e.g. 218
Volts AC
OM-232 386 Page 24
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226 652-A
OM-232 386 Page 25
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SECTION 6 − MAINTENANCE &TROUBLESHOOTING
6-1. Routine Maintenance
Disconnect power
before maintaining.
.Maintain more often
during severe conditions.
n = Check
Z = Change
~ = Clean
l = Replace
Reference
* To be done by Factory Authorized Service Agent
Every
3
Months
l Unreadable Labels
~ Weld Terminals
nl Weld Cables
Every
6
Months
OR
~ Inside Unit
n Apply Light Coat Of Oil
Or Grease To Drive Motor
Shaft
6-2. Unit Overload
Thermostats TP1 in rectifier SR1 and TP2 in stabilizer Z1 protect the unit from damage due to overheating. If TP1
and/or TP2 opens welding output will shut off, and the Over Temp light will turn on. Wait until Over Temp light turns off
before trying to weld.
6-3. Changing Drive Roll and Wire Inlet Guide
1
2
Securing Screw
Inlet Wire Guide
2
Loosen screw. Slide tip as close to
drive rolls as possible without
touching. Tighten screw.
4
3
Drive Roll
The drive roll consists of two
different sized grooves. The
stamped markings on the end
surface of the drive roll refers to the
groove on the opposite side of the
drive roll. The groove closest to the
motor shaft is the proper groove to
1
4
Drive Roll Securing Nut
Turn nut one click to secure drive
roll.
3
Tools Needed:
7/16 in
Ref. 804 914-A
OM-232 386 Page 26
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6-4. Aligning Drive Rolls and Wire Guide
Turn Off power.
View is from top of drive rolls
looking down with pressure
assembly open.
1
2
3
4
5
Drive Roll Securing Nut
Drive Roll
Correct
Incorrect
4
3
Wire Guide
2
1
Welding Wire
Drive Gear
5
Insert screwdriver, and turn screw
in or out until drive roll groove lines
up with wire guide.
Close pressure roll assembly.
Tools Needed:
Ref. 800 412-A
6-5. Troubleshooting
Welding Trouble
Remedy
No weld output; wire does not feed.
Check power switch/supplementary protector, and reset if necessary. If supplementary protector is not
tripped, replace power switch.
ThermostatTP1 or TP2 open (overheating). Allow fan to run; the thermostat will close when the unit has
No weld output; wire feeds.
Connect work clamp to get good metal to metal contact.
Replace contact tip (see Section welding gun Owner’s Manual).
Readjust front panel settings (see Section ).
Low weld output.
Low, high, or erratic wire speed.
OM-232 386 Page 27
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Wire Drive/Gun Trouble
Remedy
Straightengun cable and/or replace damaged parts (see welding gun Owner’s Manual).
Electrode wire feeding stops during
welding.
Replace contact tip if blocked (see welding gun Owner’s Manual).
Clean or replace wire inlet guide or liner if dirty or plugged (see welding gun Owner’s Manual).
Have nearest Factory Authorized Service Agent check drive motor.
OM-232 386 Page 28
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Notes
OM-232 386 Page 29
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229 598-B
OM-232 386 Page 31
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SECTION 8 − MIG WELDING (GMAW) GUIDELINES
8-1. Typical MIG Process Connections
Weld current can damage
electronic parts in vehicles.
Disconnect both battery
cables before welding on a
vehicle. Place work clamp as
close to the weld as possible.
Regulator/
Flowmeter
Wire Feeder/
Power Source
Gun
Shielding Gas
Gas
Workpiece
Work Clamp
mig1_2007−05 / Ref. 801 909-A
OM-232 386 Page 32
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8-2. Typical MIG Process Control Settings
. These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding gas, etc. affect settings. Test welds to be sure
they comply to specifications.
Material thickness determines weld
parameters.
1/8 or 0.125 in
Convert Material
Thickness to
Amperage (A)
(0.001 in = 1 ampere)
0.125 in = 125 A
Wire Size
Amperage Range
.035 in
0.023 in
0.030 in
0.035 in
30 − 90 A
40 − 145 A
50 − 180 A
Select Wire Size
Select Wire Speed
(Amperage)
Wire
Size
Wire Speed
(Approx.)
Recommendation
0.023 in
0.030 in
0.035 in
3.5 in per ampere
2 in per ampere
1.6 in per ampere
3.5 x 125 A = 437 ipm
2 x 125 A = 250 ipm
1.6 x 125 A = 200 ipm
125 A based on 1/8 in
material thickness
ipm = inches per minute
Low voltage: wire stubs into work
Select Voltage
High voltage: arc is unstable (spatter)
Set voltage midway between high/low voltage
Voltage controls height and
width of weld bead.
Wire speed (amperage) controls weld
penetration(wire speed = burn-off rate)
OM-232 386 Page 33
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8-3. Holding And Positioning Welding Gun
. Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in (13 mm)
past end of nozzle, and tip of wire is positioned correctly on seam.
1
Hold Gun and Control Gun
Trigger
1
2
3
4
Workpiece
Work Clamp
3
Electrode Extension (Stickout)
1/4 to 1/2 in (6 To 13 mm)
2
5
Cradle Gun and Rest Hand on
Workpiece
5
4
0°-15°
90°
90°
End View of Work Angle
Side View of Gun Angle
GROOVE WELDS
0°-15°
45°
45°
End View of Work Angle
Side View of Gun Angle
FILLET WELDS
S-0421-A
OM-232 386 Page 34
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8-4. Conditions That Affect Weld Bead Shape
. Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed
(weld current), and voltage.
10°
Push
10°
Drag
Perpendicular
GUN ANGLES AND WELD BEAD PROFILES
Short
Normal
Long
ELECTRODE EXTENSIONS (STICKOUT)
Short
Normal
Long
FILLET WELD ELECTODE EXTENSIONS (STICKOUT)
Slow
Normal
Fast
GUN TRAVEL SPEED
S-0634
OM-232 386 Page 35
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8-5. Gun Movement During Welding
. Normally, a single stringer bead is satisfactory for most narrow groove weld joints; however, for wide groove weld joints or bridging across gaps,
a weave bead or multiple stringer beads works better.
1
2
3
Stringer Bead − Steady
Movement Along Seam
1
2
Weave Bead − Side To Side
Movement Along Seam
Weave Patterns
Use weave patterns to cover a wide
area in one pass of the electrode.
3
S-0054-A
8-6. Poor Weld Bead Characteristics
1
2
3
4
5
Large Spatter Deposits
Rough, Uneven Bead
1
Slight Crater During Welding
Bad Overlap
Poor Penetration
2
4
3
5
S-0053-A
8-7. Good Weld Bead Characteristics
1
2
3
Fine Spatter
Uniform Bead
Moderate Crater During
Welding
1
Weld a new bead or layer for each
1/8 in (3.2 mm) thickness in metals
being welded.
4
5
No Overlap
Good Penetration into Base
Metal
2
4
3
5
S-0052-B
OM-232 386 Page 36
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8-8. Troubleshooting − Excessive Spatter
Excessive Spatter − scattering of molten metal particles that
cool to solid form near weld bead.
S-0636
Possible Causes
Wire feed speed too high.
Corrective Actions
Select lower wire feed speed.
Select lower voltage range.
Use shorter electrode extension (stickout).
Voltage too high.
Electrode extension (stickout) too long.
Workpiece dirty.
Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding.
Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.
Use clean, dry welding wire.
Insufficient shielding gas at welding arc.
Dirty welding wire.
Eliminate pickup of oil or lubricant on welding wire from feeder or liner.
Check polarity required by welding wire, and change to correct polarity at welding power source.
Incorrect polarity.
8-9. Troubleshooting − Porosity
Porosity − small cavities or holes resulting from gas pockets
in weld metal.
S-0635
Possible Causes
Corrective Actions
Insufficient shielding gas at welding arc.
Increase flow of shielding gas at regulator/flowmeter and/or prevent drafts near welding arc.
Remove spatter from gun nozzle.
Check gas hoses for leaks.
Place nozzle 1/4 to 1/2 in (6-13 mm) from workpiece.
Hold gun near bead at end of weld until molten metal solidifies.
Use welding grade shielding gas; change to different gas.
Use clean, dry welding wire.
Wrong gas.
Dirty welding wire.
Eliminate pick up of oil or lubricant on welding wire from feeder or liner.
Workpiece dirty.
Remove all grease, oil, moisture, rust, paint, coatings, and dirt from work surface before welding.
Use a more highly deoxidizing welding wire (contact supplier).
Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.
8-10. Troubleshooting − Excessive Penetration
Excessive Penetration − weld metal melting through base metal
and hanging underneath weld.
Excessive Penetration Good Penetration
S-0639
Possible Causes
Excessive heat input.
Corrective Actions
Select lower voltage range and reduce wire feed speed.
Increase travel speed.
OM-232 386 Page 37
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8-11. Troubleshooting − Lack Of Penetration
Lack Of Penetration − shallow
fusion between weld metal and
base metal.
Lack of Penetration Good Penetration
S-0638
Possible Causes
Corrective Actions
Improper joint preparation.
Improper weld technique.
Material too thick. Joint preparation and design must provide access to bottom of groove while
maintaining proper welding wire extension and arc characteristics.
Maintain normal gun angle of 0 to 15 degrees to achieve maximum penetration.
Keep arc on leading edge of weld puddle.
Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.
Select higher wire feed speed and/or select higher voltage range.
Reduce travel speed.
Insufficient heat input.
Incorrect polarity.
Check polarity required by welding wire, and change to correct polarity at welding power source.
8-12. Troubleshooting − Incomplete Fusion
Incomplete Fusion − failure of weld metal to fuse completely with
base metal or a preceeding weld bead.
S-0637
Possible Causes
Workpiece dirty.
Corrective Actions
Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before
welding.
Insufficient heat input.
Select higher voltage range and/or adjust wire feed speed.
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.
Improper welding technique.
Use correct gun angle of 0 to 15 degrees.
8-13. Troubleshooting − Burn-Through
Burn-Through− weld metal melting completely through base metal
resulting in holes where no metal remains.
S-0640
Possible Causes
Excessive heat input.
Corrective Actions
Select lower voltage range and reduce wire feed speed.
Increase and/or maintain steady travel speed.
OM-232 386 Page 38
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8-14. Troubleshooting − Waviness Of Bead
Waviness Of Bead − weld metal that is not parallel and does not cover
joint formed by base metal.
S-0641
Possible Causes
Welding wire extends too far out of nozzle. Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.
Unsteady hand. Support hand on solid surface or use two hands.
Corrective Actions
8-15. Troubleshooting − Distortion
Distortion − contraction of weld metal during welding that forces
base metal to move.
Base metal moves
in the direction of
the weld bead.
S-0642
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 voltage range and/or reduce wire feed speed.
Increase travel speed.
Weld in small segments and allow cooling between welds.
OM-232 386 Page 39
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8-16. Common MIG Shielding Gases
This is a general chart for common gases and where they are used. Many different combinations (mixtures) of
shielding gases have been developed over the years. The most commonly used shielding gases are listed in the
following table.
Application
Gas
Short Circuiting
Stainless Steel
Spray Arc Steel
Short Circuiting Steel
Aluminum
Argon
X
Argon + 25% CO
X
2
80% or greater Argon +
1
X
X
balance CO or Oxygen
2
100% CO
X
2
2
Tri-Mix
X
1
2
Limited short circuiting use
90% HE + 7-1/2% AR + 2-1/2% CO
2
8-17. Troubleshooting Guide For Semiautomatic Welding Equipment
Problem
Probable Cause
Remedy
Too little pressure on wire feed rolls.
Increase pressure setting on wire feed rolls.
Wire feed motor operates, but
wire does not feed.
Incorrect wire feed rolls.
Check size stamped on wire feed rolls, replace to match
wire size and type if necessary.
Wire spool brake pressure too high.
Restriction in the gun and/or assembly.
Decrease brake pressure on wire spool.
Check and replace cable, gun, and contact tip if
damaged. Check size of contact tip and cable liner,
replace if necessary.
Too much pressure on wire feed rolls.
Decrease pressure setting on wire feed rolls.
Wire curling up in front of the
wire feed rolls (bird nesting).
Incorrect cable liner or gun contact tip size.
Check size of contact tip and check cable liner length
and diameter, replace if necessary.
Gun end not inserted into drive housing properly.
Loosen gun securing bolt in drive housing and push gun
end into housing just enough so it does not touch wire
feed rolls.
Dirty or damaged (kinked) liner.
Gas cylinder empty.
Replace liner.
Replace empty gas cylinder.
Clean or replace gas nozzle.
Wire feeds, but no gas flows.
Gas nozzle plugged.
Gas cylinder valve not open or flowmeter not adjusted. Open gas valve at cylinder and adjust flow rate.
Restriction in gas line.
Check gas hose between flowmeter and wire feeder, and
gas hose in gun and cable assembly.
Loose or broken wires to gas solenoid.
Gas solenoid valve not operating.
Have Factory Authorized Service Agent repair wiring.
Have Factory Authorized Service Agent replace gas
solenoid valve.
Incorrect primary voltage connected to welding power Check primary voltage and relink welding power source
source. for correct voltage.
OM-232 386 Page 40
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Problem
Probable Cause
Remedy
Wire slipping in drive rolls.
Adjust pressure setting on wire feed rolls. Replace worn
drive rolls if necessary.
Welding arc not stable.
Wrong size gun liner or contact tip.
Match liner and contact tip to wire size and type.
Incorrect voltage setting for selected wire feed speed on Readjust welding parameters.
welding power source.
Loose connections at the gun weld cable or work cable. Check and tighten all connections.
Gun in poor shape or loose connection inside gun.
Repair or replace gun as necessary.
OM-232 386 Page 41
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SECTION 9 − PARTS LIST
9-1. Drive Roll And Wire Guide Kits
.Base selection of drive rolls upon the following recommended usages:
1
2
3
4
5
V-Grooved rolls for hard wire.
U-Grooved rolls for soft and soft shelled cored wires.
U-Cogged rolls for extremely soft shelled wires (usually hard surfacing types).
V-Knurled rolls for hard shelled cored wires.
Drive roll types may be mixed to suit particular requirements (e.g. V-Knurled
roll in combination with U-Grooved).
Wire Diameter
Drive Roll
Part No.
Inlet Wire
Guide
Kit No.
Fraction
.023/.025in.
.030/.035 in.
.030 in.
Decimal
.023/.025 in.
.030/.035 in.
.030 in.
Metric
0.6 mm
Type
087 131
204 579
079 594
079 595
087 130
203 526
053 695
053 700
V-Grooved
V-Grooved
V-Grooved
V-Grooved
056 192
056 192
056 192
056 192
0.8/0.9 mm
0.8 mm
.035 in.
.035 in.
0.9 mm
OM-232 368 Page 42
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Effective January 1, 2007
(Equipment with a serial number preface of “LH” or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other
guarantees or warranties expressed or implied.
Warranty Questions?
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.
*
Induction Heating Coils and Blankets, Cables, and
Non-Electronic Controls
Call
1-800-4-A-MILLER
for your local
Miller distributor.
*
*
*
*
*
*
APT & SAF Model Plasma Cutting Torches
Remote Controls
Accessory (Kits)
Replacement Parts (No labor)
Spoolmate Spoolguns
Canvas Covers
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.
Your distributor also gives
you ...
Miller’s True Blue® Limited Warranty shall not apply to:
Service
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.)
You always get the fast,
reliable response you
need. Most replacement
parts can be in your
hands in 24 hours.
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 delivery date of the
equipment to the original end-user purchaser, and not to exceed
one year after the equipment is shipped to a North American
distributor or eighteen months after the equipment is shipped to
an International distributor.
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.
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.
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.
1. 5 Years Parts — 3 Years Labor
*
Original main power rectifiers
2. 3 Years — Parts and Labor
*
*
*
*
*
*
*
*
Transformer/Rectifier Power Sources
Plasma Arc Cutting Power Sources
Process Controllers
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.
Semi-Automatic and Automatic Wire Feeders
Inverter Power Sources (Unless Otherwise Stated)
Water Coolant Systems (Integrated)
Intellitig
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.
Engine Driven Welding Generators
(NOTE: Engines are warranted separately by the
engine manufacturer.)
3. 1 Year — Parts and Labor Unless Specified
*
Motor Driven Guns (w/exception of Spoolmate
Spoolguns)
*
*
*
*
Positioners and Controllers
Automatic Motion Devices
RFCS Foot Controls
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR
Induction Heating Power Sources, Coolers, and
Electronic
Controls/Recorders
DIRECT,
INDIRECT,
SPECIAL,
INCIDENTAL
OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY
OTHER LEGAL THEORY.
*
*
*
*
*
*
*
*
*
*
Water Coolant Systems (Non-Integrated)
Flowgauge and Flowmeter Regulators (No Labor)
HF Units
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND
Grids
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,
Spot Welders
Load Banks
Arc Stud Power Sources & Arc Stud Guns
Racks
INCLUDING
ANY
IMPLIED
WARRANTY
OF
Running Gear/Trailers
MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT
FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED
BY MILLER.
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.)
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.
*
*
*
Bernard-Branded Mig Guns (No Labor)
Weldcraft-Branded TIG Torches (No Labor)
Subarc Wire Drive Assemblies
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,
4. 6 Months — Batteries
5. 90 Days — Parts
*
MIG Guns/TIG Torches and Subarc (SAW) Guns
but may vary from province to province.
miller_warr 2007−01
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Owner’s Record
Please complete and retain with your personal records.
Model Name
Purchase Date
Distributor
Address
Serial/Style Number
(Date which equipment was delivered to original customer.)
City
State
Zip
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
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
Replacement Parts
Training (Schools, Videos, Books)
International Headquarters−USA
USA Phone: 920-735-4505 Auto-Attended
USA & Canada FAX: 920-735-4134
International FAX: 920-735-4125
Technical Manuals (Servicing Information
and Parts)
Circuit Diagrams
European Headquarters −
United Kingdom
Phone: 44 (0) 1204-593493
FAX: 44 (0) 1204-598066
Welding Process Handbooks
To locate a Distributor or Service Agency visit
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
© 2007 Miller Electric Mfg. Co.2007−01
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