Miller Electric Welder OM 1313 User Manual

OM-1313  
179 084P  
September 2001  
Processes  
MIG (GMAW) Welding  
Flux Cored (FCAW) Welding  
Description  
Arc Welding Power Source  
And Wire Feeder  
R
Millermatic 185  
And M-15 Gun  
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TABLE OF CONTENTS  
SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1-3. Additional Symbols For Installation, Operation, And Maintenance . . . . . . . . . . . . . . . . . . . . .  
1-4. Principal Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1-5. EMF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SECTION 2 – INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-2. Volt-Ampere Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-3. Welding Power Source Duty Cycle And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-4. Welding Gun Duty Cycle And Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-5. Installing Work Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-6. Installing Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-7. Installing Welding Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-8. Setting Gun Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-9. Installing Wire Spool And Adjusting Hub Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-10. Changing Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-11. Electrical Service Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-12. Selecting A Location And Connecting Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
2-13. Threading Welding Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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WARNING  
This product, when used  
for welding or cutting,  
produces fumes or  
gases which contain  
chemicals known to the  
State of California to  
cause birth defects and,  
in some cases, cancer.  
(California Health &  
Safety Code Section  
25249.5 et seq.)  
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The following terms are  
used interchangeably  
throughout this manual:  
MIG = GMAW  
SECTION 3 – OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
3-1. Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
3-2. Weld Parameter Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
13  
14  
SECTION 4 – MAINTENANCE & TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
4-1. Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-2. Circuit Breakers CB1 And CB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-3. Changing Drive Roll And Inlet Wire Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-4. Cleaning Or Replacing Gun Liner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-5. Replacing Switch And/Or Head Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-6. Replacing Gun Contact Tip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
4-7. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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SECTION 5 – ELECTRICAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
SECTION 6 – MIG WELDING (GMAW) GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
6-1. Typical MIG Process Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-2. Typical MIG Process Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-3. Holding And Positioning Welding Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-4. Conditions That Affect Weld Bead Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-5. Gun Movement During Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-6. Poor Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-7. Good Weld Bead Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-8. Troubleshooting Excessive Spatter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-9. Troubleshooting Porosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-10. Troubleshooting Excessive Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-11. Troubleshooting Lack Of Penetration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-12. Troubleshooting Incomplete Fusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-13. Troubleshooting Burn-Through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-14. Troubleshooting Waviness Of Bead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-15. Troubleshooting Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-16. Common MIG Shielding Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
6-17. Troubleshooting Guide For Semiautomatic Welding Equipment . . . . . . . . . . . . . . . . . . . . . . .  
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SECTION 7 – PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
OPTIONS AND ACCESSORIES  
WARRANTY  
OM1313  
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SECTION 1 SAFETY PRECAUTIONS - READ BEFORE USING  
som _nd_4/98  
1-1. Symbol Usage  
Means Warning! Watch Out! There are possible hazards  
with this procedure! The possible hazards are shown in  
the adjoining symbols.  
This group of symbols means Warning! Watch Out! possible  
ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.  
Consult symbols and related instructions below for necessary actions  
to avoid the hazards.  
Y
Marks a special safety message.  
. Means “Note”; not safety related.  
1-2. Arc Welding Hazards  
Y
The symbols shown below are used throughout this manual to  
call attention to and identify possible hazards. When you see  
the symbol, watch out, and follow the related instructions to  
avoid the hazard. The safety information given below is only  
a summary of the more complete safety information found in  
the Safety Standards listed in Section 1-4. Read and follow all  
Safety Standards.  
D
D
D
If earth grounding of the workpiece is required, ground it directly  
with a separate cable.  
Do not touch electrode if you are in contact with the work, ground,  
or another electrode from a different machine.  
Use only well-maintained equipment. Repair or replace damaged  
parts at once. Maintain unit according to manual.  
D
D
D
Wear a safety harness if working above floor level.  
Keep all panels and covers securely in place.  
Y
Y
Only qualified persons should install, operate, maintain, and  
repair this unit.  
During operation, keep everybody, especially children, away.  
Clamp work cable with good metal-to-metal contact to workpiece  
or worktable as near the weld as practical.  
D
D
Insulate work clamp when not connected to workpiece to prevent  
contact with any metal object.  
ELECTRIC SHOCK can kill.  
Do not connect more than one electrode or work cable to any  
single weld output terminal.  
Touching live electrical parts can cause fatal shocks  
or severe burns. The electrode and work circuit is  
electrically live whenever the output is on. The input  
power circuit and machine internal circuits are also  
SIGNIFICANT DC VOLTAGE exists after removal of  
input power on inverters.  
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.  
D
Turn Off inverter, disconnect input power, and discharge input  
capacitors according to instructions in Maintenance Section  
before touching any parts.  
D
D
D
Do not touch live electrical parts.  
Wear dry, hole-free insulating gloves and body protection.  
FUMES AND GASES can be hazardous.  
Insulate yourself from work and ground using dry insulating mats  
or covers big enough to prevent any physical contact with the work  
or ground.  
Welding produces fumes and gases. Breathing  
these fumes and gases can be hazardous to your  
health.  
D
Do not use AC output in damp areas, if movement is confined, or if  
there is a danger of falling.  
D
D
Keep your head out of the fumes. Do not breathe the fumes.  
D
D
Use AC output ONLY if required for the welding process.  
If inside, ventilate the area and/or use exhaust at the arc to remove  
welding fumes and gases.  
If AC output is required, use remote output control if present on  
unit.  
D
D
If ventilation is poor, use an approved air-supplied respirator.  
D
Disconnect input power or stop engine before installing or  
servicing this equipment. Lockout/tagout input power according to  
OSHA 29 CFR 1910.147 (see Safety Standards).  
Read the Material Safety Data Sheets (MSDSs) and the  
manufacturers instructions for metals, consumables, coatings,  
cleaners, and degreasers.  
D
D
Properly install and ground this equipment according to its  
Owners Manual and national, state, and local codes.  
D
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.  
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.  
D
D
Do not weld in locations near degreasing, cleaning, or spraying op-  
erations. The heat and rays of the arc can react with vapors to form  
highly toxic and irritating gases.  
D
D
When making input connections, attach proper grounding conduc-  
tor first double-check connections.  
Frequently inspect input power cord for damage or bare wiring –  
replace cord immediately if damaged bare wiring can kill.  
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 if necessary, while wearing an  
air-suppliedrespirator. The coatings and any metals containing  
these elements can give off toxic fumes if welded.  
D
D
D
Turn off all equipment when not in use.  
Do not use worn, damaged, undersized, or poorly spliced cables.  
Do not drape cables over your body.  
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ARC RAYS can burn eyes and skin.  
BUILDUP OF GAS can injure or kill.  
D
D
Shut off shielding gas supply when not in use.  
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.  
Always ventilate confined spaces or use  
approved air-supplied respirator.  
D
Wear a welding helmet fitted with a proper shade of filter to protect  
your face and eyes when welding or watching (see ANSI Z49.1  
and Z87.1 listed in Safety Standards).  
HOT PARTS can cause severe burns.  
D
D
D
Wear approved safety glasses with side shields under your  
helmet.  
D
D
Do not touch hot parts bare handed.  
Use protective screens or barriers to protect others from flash and  
glare; warn others not to watch the arc.  
Allow cooling period before working on gun or  
torch.  
Wear protective clothing made from durable, flame-resistant mate-  
rial (leather and wool) and foot protection.  
MAGNETIC FIELDS can affect pacemakers.  
WELDING can cause fire or explosion.  
D
D
Pacemaker wearers keep away.  
Wearers should consult their doctor before  
going near arc welding, gouging, or spot  
welding operations.  
Welding on closed containers, such as tanks,  
drums, or pipes, can cause them to blow up. Sparks  
can fly off from the welding arc. The flying sparks, hot  
workpiece, and hot equipment can cause fires and  
burns. Accidental contact of electrode to metal objects can cause  
sparks, explosion, overheating, or fire. Check and be sure the area is  
safe before doing any welding.  
NOISE can damage hearing.  
D
D
D
Protect yourself and others from flying sparks and hot metal.  
Do not weld where flying sparks can strike flammable material.  
Noise from some processes or equipment can  
damagehearing.  
Remove all flammables within 35 ft (10.7 m) of the welding arc. If  
this is not possible, tightly cover them with approved covers.  
D
Wear approved ear protection if noise level is  
high.  
D
Be alert that welding sparks and hot materials from welding can  
easily go through small cracks and openings to adjacent areas.  
D
D
Watch for fire, and keep a fire extinguisher nearby.  
CYLINDERS can explode if damaged.  
Be aware that welding on a ceiling, floor, bulkhead, or partition can  
cause fire on the hidden side.  
Shielding gas cylinders contain gas under high  
pressure. If damaged, a cylinder can explode. Since  
gas cylinders are normally part of the welding  
process, be sure to treat them carefully.  
D
D
Do not weld on closed containers such as tanks, drums, or pipes,  
unless they are properly prepared according to AWS F4.1 (see  
Safety Standards).  
Connect work cable to the work as close to the welding area as  
practical to prevent welding current from traveling long, possibly  
unknown paths and causing electric shock and fire hazards.  
D
D
Protect compressed gas cylinders from excessive heat, mechani-  
cal shocks, slag, open flames, sparks, and arcs.  
Install cylinders in an upright position by securing to a stationary  
support or cylinder rack to prevent falling or tipping.  
D
D
Do not use welder to thaw frozen pipes.  
Remove stick electrode from holder or cut off welding wire at  
contact tip when not in use.  
D
D
D
D
D
Keep cylinders away from any welding or other electrical circuits.  
Never drape a welding torch over a gas cylinder.  
D
D
Wear oil-free protective garments such as leather gloves, heavy  
shirt, cuffless trousers, high shoes, and a cap.  
Never allow a welding electrode to touch any cylinder.  
Never weld on a pressurized cylinder explosion will result.  
Remove any combustibles, such as a butane lighter or matches,  
from your person before doing any welding.  
Use only correct shielding gas cylinders, regulators, hoses, and fit-  
tings designed for the specific application; maintain them and  
associated parts in good condition.  
FLYING METAL can injure eyes.  
D
D
Turn face away from valve outlet when opening cylinder valve.  
D
Welding, chipping, wire brushing, and grinding  
cause sparks and flying metal. As welds cool,  
they can throw off slag.  
Keep protective cap in place over valve except when cylinder is in  
use or connected for use.  
D
Read and follow instructions on compressed gas cylinders,  
associated equipment, and CGA publication P-1 listed in Safety  
Standards.  
D
Wear approved safety glasses with side  
shields even under your welding helmet.  
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1-3. Additional Symbols For Installation, Operation, And Maintenance  
FIRE OR EXPLOSION hazard.  
MOVING PARTS can cause injury.  
D
Do not install or place unit on, over, or near  
combustiblesurfaces.  
D
D
Keep away from moving parts such as fans.  
Keep all doors, panels, covers, and guards  
closed and securely in place.  
D
Do not install unit near flammables.  
D
Do not overload building wiring be sure power supply system is  
properly sized, rated, and protected to handle this unit.  
FALLING UNIT can cause injury.  
H.F. RADIATION can cause interference.  
D
D
D
Use lifting eye to lift unit only, NOT running  
gear, gas cylinders, or any other accessories.  
D
High-frequency (H.F.) can interfere with radio  
navigation, safety services, computers, and  
communicationsequipment.  
Use equipment of adequate capacity to lift and  
support unit.  
D
Have only qualified persons familiar with  
electronic equipment perform this installation.  
If using lift forks to move unit, be sure forks are  
long enough to extend beyond opposite side of  
unit.  
D
D
The user is responsible for having a qualified electrician prompt-  
ly correct any interference problem resulting from the installa-  
tion.  
If notified by the FCC about interference, stop using the  
equipmentat once.  
OVERUSE can cause OVERHEATING  
D
D
Allow cooling period; follow rated duty cycle.  
D
D
Have the installation regularly checked and maintained.  
Reduce current or reduce duty cycle before  
starting to weld again.  
Keep high-frequency source doors and panels tightly shut, keep  
spark gaps at correct setting, and use grounding and shielding to  
minimize the possibility of interference.  
D
Do not block or filter airflow to unit.  
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.  
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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.  
1-4. Principal Safety Standards  
Safety in Welding and Cutting, ANSI Standard Z49.1, from American  
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126  
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,  
from Compressed Gas Association, 1235 Jefferson Davis Highway,  
Suite 501, Arlington, VA 22202.  
Safety and Health Standards, OSHA 29 CFR 1910, from Superinten-  
dent of Documents, U.S. Government Printing Office, Washington, D.C.  
20402.  
Code for Safety in Welding and Cutting, CSA Standard W117.2, from  
Canadian Standards Association, Standards Sales, 178 Rexdale  
Boulevard, Rexdale, Ontario, Canada M9W 1R3.  
Safe Practices For Occupation And Educational Eye And Face  
Protection, ANSI Standard Z87.1, from American National Standards  
Institute, 1430 Broadway, New York, NY 10018.  
Recommended Safe Practices for the Preparation for Weldingand Cut-  
ting of Containers That Have Held Hazardous Substances, American  
Welding Society Standard AWS F4.1, from American Welding Society,  
550 N.W. LeJeune Rd, Miami, FL 33126  
NationalElectrical Code, NFPA Standard 70, from National Fire Protec-  
tion Association, Batterymarch Park, Quincy, MA 02269.  
Cutting And Welding Processes, NFPA Standard 51B, from National  
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.  
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1-5. 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.  
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  
committees 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 Pacemakers:  
To reduce magnetic fields in the workplace, use the following  
procedures:  
Pacemaker wearers consult your doctor first. If cleared by your doctor,  
then following the above procedures is recommended.  
OM-1313 Page 4  
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SECTION 2 INSTALLATION  
2-1. Specifications  
Amperes Input at  
Rated Load  
Maximum  
Rated Welding  
Output  
Amperage  
Range  
Overall  
Dimensions  
Output, 60 Hz,  
Open-Circuit  
Weight  
Single-Phase  
Voltage DC  
200 V  
230 V  
KVA  
KW  
Length: 36 in  
(915 mm)  
150 A @ 23 Volts  
DC, 60% Duty Cycle  
165 lb  
(75 kg)  
Width: 18 in  
(457 mm)  
30 185  
33  
30 (1.6)* 26 (1.4)* 6 (0.27)* 5 (0.13)*  
Height: 27 in  
(686 mm)  
Wire Type And Diameter  
Solid Steel /  
Calculated Wire Speed  
Range At No Load  
Max Wire Feed Speed  
While Welding  
Stainless  
Steel  
Flux Cored  
Aluminum  
.030 .045 in  
(0.8 1.2 mm) (0.8 0.9 mm)  
.030 .035 in  
.023 .035 in  
(0.6 - 0.9 mm)  
138 795 IPM (3.5 20.3 m/min)  
650 IPM (16.5 m/min)  
*While idling  
Operating Temperature Range – –20C to +40C  
Storage Temperature Range -30C to + 50C  
2-2. Volt-Ampere Curves  
Volt-ampere curves show mini-  
mum and maximum voltage and  
amperage output capabilities of  
unit. Curves of other settings fall be-  
tween curves shown.  
va_curve1 4/95 SB-180 824  
OM-1313 Page 5  
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2-3. Welding Power Source Duty Cycle And Overheating  
Duty Cycle is percentage of 10 min-  
utes 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  
voltage, or duty cycle before  
welding.  
Y
Exceeding duty cycle can  
damage unit and void  
warranty.  
60% Duty Cycle At 150 Amperes  
6 Minutes Welding  
4 Minutes Resting  
Overheating  
A or V  
0
15  
OR  
Reduce Duty Cycle  
Minutes  
duty1 4/95 SB-181 009  
2-4. Welding Gun Duty Cycle And Overheating  
CAUTION  
WELDING LONGER THAN RATED DUTY CYCLE can damage gun and void warranty.  
Do not weld at rated load longer than shown below.  
Using gasless flux cored wire reduces gun duty cycle.  
warn7.1 8/93  
Definition  
.023 To .045 in (0.6 To 1.1 mm)  
Hard Or Flux Cored Wires  
.023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires  
60% Duty Cycle At 200 Amperes  
0
100% Duty Cycle At 150 Amperes  
Using CO  
2
10  
Minutes  
Using CO  
2
60% Duty Cycle At 150 Amperes  
Using Mixed Gases  
100% Duty Cycle At 120 Amperes  
Using Mixed Gases  
Duty Cycle is percentage of 10  
minutes that gun can weld at  
rated load without overheating.  
6 Minutes Welding  
4 Minutes Resting  
Continuous Welding  
SB1.1 8/93  
OM-1313 Page 6  
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2-5. Installing Work Clamp  
1
2
Work Cable  
Boot  
Slide boot onto work cable. Route  
cable out front panel opening from  
inside.  
4
3
Negative () Output Terminal  
Connect cable to terminal and  
cover connection with boot.  
5
4
5
Hardware  
Work Clamp  
Route cable through clamp handle  
and secure as shown.  
1
2
Close door.  
Tools Needed:  
3
1/2, 3/4 in  
ST-801 566-A  
2-6. Installing Gas Supply  
Obtain gas cylinder and chain to  
running gear, wall, or other station-  
ary support so cylinder cannot fall  
and break off valve.  
1
2
1
2
Cap  
Cylinder Valve  
Tools Needed:  
5/8, 1-1/8 in  
Remove cap, stand to side of valve,  
and open valve slightly. Gas flow  
blows dust and dirt from valve.  
Close valve.  
3
4
Cylinder  
3
Regulator/Flowmeter  
Install so face is vertical.  
4
5
Regulator/Flowmeter Gas  
Hose Connection  
Argon Gas  
6
Welding Power Source Gas  
Hose Connection  
Connect customer supplied gas  
hose between regulator/flowmeter  
gas hose connection, and fitting on  
rear of welding power source.  
OR  
1
2
7
Flow Adjust  
7
5
Typical flow rate is 20 cfh (cubic feet  
per hour). Check wire manufactur-  
ers recommended flow rate.  
8
CO Adapter (Customer Sup-  
plied)  
2
9
O-Ring (Customer Supplied)  
3
Install adapter with O-ring between  
8
9
regulator/flowmeter and  
cylinder.  
CO  
2
CO Gas  
2
6
ST-801 571 / ST-802 028  
OM-1313 Page 7  
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2-7. Installing Welding Gun  
1
2
3
Drive Assembly  
Gun Securing Knob  
Gun End  
Loosen securing knob. Insert gun  
end through opening until it bottoms  
against drive assembly. Tighten  
nut.  
1
2
4
Gun Trigger Plug  
Insert plug into receptacle, and  
tighten threaded collar.  
3
Close door.  
4
Ref. ST-801 567  
2-8. Setting Gun Polarity  
1
Polarity Changeover Label  
Always read and follow manufac-  
tures recommended polarity.  
1
Tools Needed:  
3/4, 11/16 in  
Ref. 190 821-A  
OM-1313 Page 8  
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2-9. Installing Wire Spool And Adjusting Hub Tension  
Use compression spring with  
8 in (200 mm) spools.  
Tools Needed:  
When a slight force is needed  
to turn spool, tension is set.  
15/16 in  
ST-072573-B  
2-10. Changing Input Voltage  
Y
Turn Off unit, and disconnect  
input power.  
Unit was shipped from factory set  
for 230 volts.  
1
2
3
Transformer T1  
Rear Of Power Switch S1  
Lead Marked 230 Volt And  
Fan Motor Lead  
2
Disconnect 230 volt lead and fan  
motor lead from rear of S1. Leave  
fan motor lead connected to 230  
volt lead.  
3
4
Lead Marked 200 Volt  
Remove cable tie, and slide short  
piece of sleeving off 200 volt lead,  
and slide sleeving over end of 230  
volt and fan motor leads. Fold  
sleeving over and secure in place.  
1
Connect 200 volt lead to S1 where  
230 volt lead was removed.  
Reinstall wrapper.  
4
Tools Needed:  
3/8, 7/16 in  
ST-801 580-A  
OM-1313 Page 9  
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2-11. Electrical Service Guide  
Input Voltage  
200  
30  
230  
26  
Input Amperes At Rated Output  
Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes  
1
2
3
35  
45  
10  
30  
40  
10  
Circuit Breaker , Time-Delay  
Normal Operating  
Min Input Conductor Size In AWG/Kcmil  
97  
(29)  
128  
(39)  
Max Recommended Input Conductor Length In Feet (Meters)  
Min Grounding Conductor Size In AWG/Kcmil  
10  
10  
Reference: 1999 National Electrical Code (NEC)  
1 Choose a circuit breaker with time-current curves comparable to a Time Delay Fuse.  
2 Time-Delayfuses 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).  
Y
Caution: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard.  
2-12. Selecting A Location And Connecting Input Power  
1
Rating Label  
Supply correct input power.  
2
3
Plug  
Y
Do not move or operate unit  
where it could tip.  
Receptacle  
Connect plug to receptacle.  
18 in (457 mm) of  
space for airflow  
4
Input And Grounding  
Conductors  
Connect directly to line disconnect  
device if hard wiring is required.  
5
Line Disconnect Device  
Y
Always connect grounding  
conductor first.  
See Section 2-11.  
Y
Special installation may be  
required where gasoline or  
volatile liquids are present –  
see NEC Article 511 or CEC  
Section 20.  
= GND/PE  
5
L1  
L2  
1
2
1
4
3
L1  
L2  
230 VAC, 1  
801 568 / Ref. 800 797-B  
OM-1313 Page 10  
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2-13. Threading Welding Wire  
Tools Needed:  
4 in  
(102 mm)  
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. ST-801 570-A / ST-801 083 / S-0627-A  
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Notes  
OM-1313 Page 12  
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SECTION 3 OPERATION  
3-1. Front Panel Controls  
Controls For Standard Units  
Wire Speed Control  
1
Use control to select a wire feed  
speed. Scale around control is not  
actual wire feed speed, but is for  
reference only.  
2
Voltage Switch  
The higher the selected number,  
the thicker the material that can be  
welded (see Section 3-2). Do not  
switch while welding.  
3
Power Switch  
2
3
Ref. ST-180 930  
OM-1313 Page 13  
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3-2. 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 Inside  
Door  
230 Volts AC  
Weld Will Be  
Colder  
Raise Settings  
Lower  
e.g. 218  
Volts AC  
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Ref. 197 949  
OM-1313 Page 15  
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SECTION 4 MAINTENANCE & TROUBLESHOOTING  
4-1. Routine Maintenance  
. Maintain more often  
Y
Disconnectpower  
before maintaining.  
during severe conditions.  
3 Months  
6 Months  
Clean And  
Tighten  
Weld  
Repair Or  
Replace  
Cracked  
Cables And  
Cords  
Replace  
Damaged Or  
Unreadable  
Labels  
Terminals  
Remove drive roll  
and apply light coat  
of oil or grease to  
drive motor shaft.  
Blow Out Or  
Vacuum Inside  
4-2. Circuit Breakers CB1 And CB2  
2
1
Y
Turn Off unit.  
1
Circuit Breaker CB1  
CB1 protects the transformer from  
overload. If CB1 opens, wire  
feeding stops.  
2
Circuit Breaker CB2  
CB2 protects the trigger circuit from  
overload. If CB2 opens, weld output  
stops.  
Press button to reset circuit  
breaker. Close door.  
Ref. ST-801 567  
4-3. Changing Drive Roll And Inlet Wire Guide  
1
Drive Roll  
Choose correct drive roll for wire  
type, and install as shown.  
2
Inlet Wire Guide  
Remove guide by pressing on  
barbed area, or cutting off one end  
near housing and pulling it out of  
hole. Push new guide into hole from  
rear until it snaps in place.  
1
Tools Needed:  
2
Ref. ST-801 569-A  
OM-1313 Page 16  
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4-4. Cleaning Or Replacing Gun Liner  
Tools Needed:  
Y
Disconnect gun first.  
3/8 in  
Head Tube  
Remove nozzle, contact tip, and  
adapter.  
3/8 in  
Remove liner.  
Lay gun cable out straight  
before installing new liner.  
To Reassemble Gun:  
Insert new liner.  
Install and tighten wire outlet guide.  
Cut liner off 3/4 in (20 mm) (3/8 in  
[9.5 mm] for aluminum) from head  
tube.  
Blow out gun casing.  
Install adapter, contact tip, and  
nozzle.  
Ref. ST-800 797-C  
OM-1313 Page 17  
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4-5. Replacing Switch And/Or Head Tube  
Y
Disconnect gun first.  
1
Remove handle  
locking nut.  
3
Slide handle.  
2
Remove switch housing. Note: If installing new  
switch, push switch lead connectors onto terminal of  
new switch (polarity is not important). Install switch  
back into handle, and secure with handle locking nut.  
If replacing head tube, continue to end of figure.  
4
Secure head  
tube in vice.  
5
Loosen jam nut. Remove  
from vice and turn head  
tube out by hand.  
6
Install existing shock washer onto  
new head tube. Hand-tighten head  
tube into connector cable.  
7
Place head tube in vice and tighten  
until nuts are tight.  
8
Remove from vice. Reposition  
handle and install switch housing.  
Secure with handle locking nut.  
Tools Needed:  
3/4 in  
Ref. ST-800 795-C  
OM-1313 Page 18  
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4-6. Replacing Gun Contact Tip  
Y
1
Turn Off unit.  
Nozzle  
2
Contact Tip  
Cut off welding wire at contact tip.  
Remove nozzle.  
Remove contact tip and install new  
contact tip. Reinstall nozzle.  
Tools Needed:  
2
1
Ref. 800 797-C  
4-7. Troubleshooting  
Welding Trouble  
Remedy  
No weld output; wire does not feed.  
Secure power cord plug in receptacle (see Section 2-12).  
Check and replace power switch if necessary.  
Check circuit breakers CB1 and/or CB2, and reset if necessary (see Section 4-2).  
Replace building line fuse or reset circuit breaker if open (see Section 2-12).  
Secure gun plug in receptacle or repair leads, or replace trigger switch (see Section 2-7 and/or 4-5).  
ThermostatTP1 open (overheating). Allow fan to run; the thermostat will close when the unit has cooled  
(see Section 2-3).  
No weld output; wire feeds.  
Connect work clamp to get good metal to metal contact.  
Replace contact tip (see Section 4-6).  
Low weld output.  
Connect unit to proper input voltage or check for low line voltage (see Section 2-12).  
Readjust front panel settings (see Section 3-1).  
Low, high, or erratic wire speed.  
Change to correct size drive roll (see Section 4-3).  
Readjust drive roll pressure (see Section 2-13).  
Replace inlet guide, contact tip, and/or liner if necessary (see Sections 2-13, and 4-4).  
Wire Drive/Gun Trouble  
Remedy  
Straightengun cable and/or replace damaged parts (see Section 4-4).  
Adjust drive roll pressure (see Section 2-13).  
Electrode wire feeding stops during  
welding.  
Readjust hub tension (see Section 2-9).  
Replace contact tip if blocked (see Section 4-6).  
Clean or replace wire inlet guide or liner if dirty or plugged (see Section 4-4).  
Replace drive roll if worn or slipping (see Section 4-3).  
Secure gun plug in receptacle or repair leads, or replace trigger switch (see Section 2-7 and/or 4-4).  
Check and clear any restrictions at drive assembly and liner (see Section 4-4).  
Have nearest Factory Authorized Service Agent check drive motor.  
OM-1313 Page 19  
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SECTION 5 ELECTRICAL DIAGRAM  
SB-186 065  
Figure 5-1. Circuit Diagram  
OM-1313 Page 20  
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SECTION 6 MIG WELDING (GMAW) GUIDELINES  
6-1. Typical MIG Process Connections  
Y
Weld current can damage  
electronic parts in vehicles.  
Disconnect both battery  
cables before welding on a  
vehicle. Place work clamp as  
close to the weld as possible.  
Regulator/  
Flowmeter  
Wire Feeder/  
Power Source  
Gas  
Gun  
Shielding  
Gas  
Work Clamp  
Workpiece  
light mig 5/967 / Ref. 801 909 / Ref. 801 570-B  
OM-1313 Page 21  
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6-2. 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.  
NOTE  
Material thickness determines weld  
parameters.  
1/8 or  
.125 in  
Convert Material  
Thickness to  
Amperage (A)  
(.001 in = 1 ampere)  
.125 in = 125 A  
Wire Size  
Amperage Range  
.035 in  
.023 in  
.030 in  
.035 in  
30 90 A  
40 145 A  
50 180 A  
Select Wire Size  
Select Wire Speed  
(Amperage)  
Wire  
Size  
Wire Speed  
(Approx.)  
Recommendation  
.023 in  
.030 in  
.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 = inch per minute  
Low voltage: wire stubs into work  
High voltage: arc is unstable (spatter)  
Select Voltage  
Set voltage midway between high/low voltage.  
Wire speed (amperage) controls weld pe-  
netration(wire speed = burn-off rate)  
Voltage controls height and width of  
weld bead.  
Ref. ST-801 865  
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6-3. 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.  
NOTE  
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-1313 Page 23  
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6-4. 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.  
NOTE  
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-1313 Page 24  
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6-5. 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.  
NOTE  
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  
6-6. 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  
6-7. 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  
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6-8. 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.  
6-9. 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.  
6-10. 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-1313 Page 26  
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6-11. 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.  
6-12. 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.  
6-13. Troubleshooting Burn-Through  
Burn-Throughweld 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-1313 Page 27  
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6-14. 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  
6-15. 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.  
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6-16. 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
X
X
2
2
Tri-Mix  
1
2
Limited short circuiting use  
90% HE + 7-1/2% AR + 2-1/2% CO  
2
6-17. 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-1313 Page 29  
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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.  
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Notes  
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SECTION 7 PARTS LIST  
. Hardware is common and  
not available unless listed.  
801 572-C  
Figure 7-1. Main Assembly  
OM-1313 Page 32  
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Item  
No.  
Dia.  
Mkgs.  
Part  
No.  
Description  
Figure 7-1. Main Assembly  
Quantity  
. . . 1 . . . . . . . . . . . . . 151 187 . . LATCH, slide flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 2 . . . . . . . . . . . . . 134 464 . . LABEL, warning general precautionary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 3 . . . . . . . . . . . . +151 565 . . WRAPPER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 4 . . . . . . . . . . . . . . Fig 7-2 . . CENTER BAFFLE, w/components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 5 . . . . SR1 . . . 191 487 . . RECTIFIER ASSEMBLY, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 180 920 . . . . BRACKET RECTIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 191 375 . . . . RECTIFIER SI DIODE ASSEMBLY, POS . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 191 376 . . . . RECTIFIER SI DIODE ASSEMBLY, NEG . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 152 862 . . . . GROMMET, SCR .250 panel hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
. . . . . . . . . . . . . . . . . . . 026 947 . . . . STAND-OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . . . . . . . . TP1 . . . 604 515 . . . . THERMOSTAT, NC open 211F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 6 . . . . . FM . . . . 123 468 . . . . MOTOR, fan 230V 60/50 Hz 3000RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 7 . . . . . . . . . . . . . 005 656 . . . . BLADE, fan 6.000 4wg 30 deg .175 bore . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 8 . . . . . . . . . . . . . 180 918 . . PANEL, rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 9 . . . . . . . . . . . . . 190 773 . . BEZEL, front rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 10 . . . . . . . . . . . . . 180 923 . . BRACKET, bottle retainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 200 285 . . LABEL, warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 11 . . . . . . . . . . . . . 602 387 . . CHAIN, weldless 2/0 x 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 12 . . . . . . . . . . . . . 605 227 . . NUT, 750-14 knurled 1.68dia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 13 . . . . PLG1 . . . 181 072 . . CORD SET, 250V 6-50P 12ga 3/c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 14 . . . . . . . . . . . . . . 111 443 . . BUSHING, strain relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 15 . . . . GS1 . . . 125 785 . . VALVE, 24VAC 2 way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 16 . . . . . . . . . . . . . 180 916 . . BASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 17 . . . . . . . . . . . . . 203 417 . . AXLE, running gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 18 . . . . . . . . . . . . . 186 758 . . WHEEL, rubolene 10in dia x 2.25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 19 . . . . . . . . . . . . . 602 250 . . WASHER, flat .812 ID x 1.469 OD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 20 . . . . . . . . . . . . . 121 614 . . RING, rtng ext .750 shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 21 . . . . . . Z . . . . . *180 989 . . STABILIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . TP2 . . . 163 266 . . THERMOSTAT, NC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 22 . . . . . . . . . . . . . 008 999 . . CASTER, swvl 4.00 in plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 23 . . . . . T1 . . . . 180 925 . . TRANSFORMER, power main . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 24 . . . . . . . . . . . . . 180 924 . . PANEL, side lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 25 . . . . . S2 . . . . 153 197 . . SWITCH, selector 6 position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 26 . . . . RC2 . . . 048 282 . . RECEPTACLE W/SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 27 . . . . . S1 . . . . . 124 511 . . SWITCH, tgl DPST 40A 600VAC scr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 28 . . . . . . . . . . . . . 180 917 . . PANEL, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 29 . . . . . . . . . . . . . 148 956 . . HANDLE, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 30 . . . . . . . . . . . . . 057 357 . . BUSHING, snap-in nyl .937 ID x 1.125mtg hole . . . . . . . . . . . . . . . . . . . . . 2  
. . . 31 . . . . . . . . . . . . . 097 924 . . KNOB, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 32 . . . . . R1 . . . . 035 897 . . POTENTIOMETER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 33 . . . . . . . . . . . . . 200 033 . . LABEL, nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 34 . . . . . . . . . . . . . 147 571 . . HANDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 35 . . . . . . . . . . . . . 130 750 . . CLAMP, work 300A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 36 . . . . . . . . . . . . . 600 318 . . CABLE, weld copper (order by ft) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10ft  
. . . . . . . . . . . . . . . . . . . 203 388 . . REGULATOR/FLOWMETER, 1050 cfh . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 144 108 . . HOSE, gas 5ft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
+When ordering a component originally displaying a precautionary label, the label should also be ordered.  
*When ordering stabilizer 180 989, also order thermostat 163 266.  
To maintain the factory original performance of your equipment, use only Manufacturers Suggested  
Replacement Parts. Model and serial number required when ordering parts from your local distributor.  
OM-1313 Page 33  
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. Hardware is common and  
not available unless listed.  
ST-801 631-D  
Figure 7-2. Center Baffle w/Components  
OM-1313 Page 34  
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Item  
No.  
Dia.  
Mkgs.  
Part  
No.  
Description  
Quantity  
Figure 7-2. Baffle, Center w/Components (Fig 7-1 Item 4)  
. . . 1 . . . . . . . . . . . . . 058 427 . . RING, retaining spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 2 . . . . . . . . . . . . . 085 980 . . NUT, 625-11 .94 hex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 3 . . . . . . . . . . . . . 605 941 . . WASHER, flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 4 . . . . . . . . . . . . . 186 437 . . SPRING, cprsn .84500 x .110W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 5 . . . . . . . . . . . . . 057 971 . . WASHER, flat .632 ID x 1.500 OD x .12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 6 . . . . . . . . . . . . . 057 745 . . SPRING, cprsn 2.430 OD x .90 wire x 2.500 . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 7 . . . . . . . . . . . . . 186 435 . . HUB, spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 8 . . . . . . . . . . . . . 186 436 . . WASHER, brake plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 9 . . . . . . . . . . . . . 180 915 . . BAFFLE, center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 10 . . . . . C6 . . . . 191 385 . . CAPACITOR ASSEMBLY, (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 11 . . . . . . . . . . . . . 191 374 . . . . CAPACITOR, elctlt 30000uf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
. . . 12 . . . . . . . . . . . . . 191 101 . . . . BUSS BAR, positive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 13 . . . . . . . . . . . . . 191 102 . . . . BUSS BAR, negative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 14 . . . . . . . . . . . . . 188 846 . . . . SCREW, .010-32 x .50 hex hd-slt S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
. . . 15 . . . . . . . . . . . . . 083 147 . . . . GROMMET, scr No. 8/10 panel hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
. . . 16 . . . . . . . . . . . . . 180 927 . . REEL SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 17 . . . . . . . . . . . . . 057 358 . . BUSHING, snap-in nyl 1.000 ID x 1.375mtg hole . . . . . . . . . . . . . . . . . . . . 1  
. . . 18 . . . . . R2 . . . . 091 685 . . RESISTOR, WW fxd 50W 25 ohm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 20 . . . . . W . . . . 189 486 . . CONTACTOR, def prp 40A 3P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 21 . . . . PC1 . . . 171 986 . . CIRCUIT CARD ASSEMBLY, control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . PLG10 . . 165 745 . . HOUSING & PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 22 . . . . . . . . . . . . . 134 201 . . STAND-OFF SUPPORT, PC card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
. . . 23 . . . . CB2 . . . 180 912 . . CIRCUIT BREAKER, man reset 5A 250V . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 24 . . . . CB1 . . . 183 492 . . CIRCUIT BREAKER, man reset 10A 250V . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 25 . . . . . . . . . . . . . 097 421 . . TERMINAL, pwr output red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 26 . . . . . . . . . . . . . 097 416 . . TERMINAL, pwr output black . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 27 . . . . CR1 . . . 072 817 . . RELAY, encl 24VAC DPDT 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 28 . . . . . . . . . . . . . . Fig 7-4 . . DRIVE ASSEMBLY, wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . PLG3 . . . . 115 093 . . CONNECTOR & SOCKETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . RC3 . . . 131 059 . . CONNECTOR & PINS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 29 . . . . . . . . . . . . . 196 318 . . COVER, cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 196 894 . . BRACKET, consumable/tool tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . 202 449 . . PLATE, switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
To maintain the factory original performance of your equipment, use only Manufacturers Suggested  
Replacement Parts. Model and serial number required when ordering parts from your local distributor.  
OM-1313 Page 35  
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Item  
No.  
Part  
No.  
Description  
Quantity  
169 589  
Figure 7-3. M-15 Gun (Fig 7-1 Item 36)  
. . . 1 . . . . . 169 715 . . NOZZLE, slip type .500 orf flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 2 . . . 087 299 . . TIP, contact scr .023 wire x 1.125  
. . . 2 . . . 000 067 . . TIP, contact scr .030 wire x 1.125  
. . . 2 . . . 000 068 . . TIP, contact scr .035 wire x 1.125  
. . . 2 . . . 000 069 . . TIP, contact scr .045 wire x 1.125  
. . . 3 . . . . . 169 716 . . ADAPTER, contact tip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 5 . . . . . 170 470 . . RING, retaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 8 . . . . . 169 718 . . TUBE, head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 9 . . . . . 169 738 . . NUT, locking handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 10 . . . . . 194 524 . . NUT, jam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 11 . . . . . 169 737 . . HANDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 12 . . . . . 169 741 . . STRAIN RELIEF, cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 13 . . . . . 180 433 . . CORD, trigger assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 14 . . . . . 079 974 . . O-RING, .500 ID x .103CS rbr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
. . . 15 . . . 194 010 . . LINER, monocoil .023/.025 wire x 15ft (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 15 . . . 194 011 . . LINER, monocoil .030/.035 wire x 15ft (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 15 . . . 194 012 . . LINER, monocoil .035/.045 wire x 15ft (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 16 . . . . . 079 975 . . . . O-RING, .187 ID x .103CS rbr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 17 . . . . . 196 255 . . SWITCH, trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
8
2
1
3
5
9
10  
15  
11  
12  
16  
17  
13  
14  
9
11  
12  
800 792-B  
Figure 7-3. M-15 Gun  
OPTIONAL  
To maintain the factory original performance of your equipment, use only Manufacturers Suggested  
Replacement Parts. Model and serial number required when ordering parts from your local distributor.  
OM-1313 Page 36  
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Item  
No.  
Part  
No.  
Description  
Quantity  
Figure 7-4. Drive Assembly, Wire (Fig 7-2 Item 29)  
. . . 1 . . . . . . . . . . . . . 196 237 . . MOTOR, gear 24VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 2 . . . . . . . . . . . . . 180 929 . . HOUSING, motor drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 3 . . . . . . . . . . . . . 198 789 . . DRIVE ASSEMBLY, wire (consisting of) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 4 . . . . . . . . . . . . . 196 895 . . . . KNOB, tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 5 . . . . . . . . . . . . . 090 415 . . . . SPRING, cprsn .695 OD x .080 wire x 1.500 . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 6 . . . . . . . . . . . . . 198 080 . . . . CUP, spring 185 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 7 . . . . . . . . . . . . . 085 242 . . . . FASTENER, pinned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 8 . . . . . . . . . . . . . 090 416 . . . . PIN, hinge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 9 . . . . . . . . . . . . . 124 817 . . . . HOUSING, wire drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 10 . . . . . . . . . . . . . 090 443 . . . . BEARING, ball rdl sgl row .315 x .866 x .27 (consisting of) . . . . . . . . . . 1  
. . . . . . . . . . . . . . . . . . . . 111 622 . . . . . . SPACER, bearing .196 ID x .310 OD x .500 collar . . . . . . . . . . . . . . . . 1  
. . . 11 . . . . . . . . . . . . . . 112 031 . . . . LEVER, pressure roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 12 . . . . . . . . . . . . . 151 828 . . . . PIN, cotter hair .054 x .750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 13 . . . . . . . . . . . . . 124 778 . . KNOB, T 2.000 bar w/.312-18 st . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 14 . . . . . . . . . . . . . 174 609 . . SCREW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
. . . 15 . . . . . . . . . . . . . 090 423 . . ROLL, drive V groove .023-.035 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 16 . . . . . . . . . . . . . 058 549 . . GUIDE, wire inlet 1/16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
. . . 17 . . . . . . . . . . . . . 010 224 . . PIN, spring CS .187 x 1.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
1
2
. Hardware is common and  
not available unless listed.  
4
5
6
3
7
8
9
10  
11  
12  
Includes  
Items  
13, 16, 17  
17  
13  
16  
14  
15  
ST-181 053-A  
Figure 7-4. Drive Assembly, Wire  
To maintain the factory original performance of your equipment, use only Manufacturers Suggested  
Replacement Parts. Model and serial number required when ordering parts from your local distributor.  
OM-1313 Page 37  
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Effective January 1, 2000  
(Equipment with a serial number preface of LAor 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.  
*
APT, ZIPCUT & PLAZCUT Model Plasma Cutting  
Torches  
Call  
1-800-4-A-MILLER  
for your local  
Miller distributor.  
*
*
*
*
*
Remote Controls  
Accessory Kits  
Replacement Parts (No labor)  
Spoolmate 185 & Spoolmate 250  
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 ...  
Millers True Blue Limited Warranty shall not apply to:  
1. Consumable components; such as contact tips,  
cutting nozzles, contactors, brushes, slip rings,  
relays or parts that fail due to normal wear.  
Service  
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 date that  
the equipment was delivered to the original retail purchaser, or  
one year after the equipment is sent to a North American  
distributor or eighteen months after the equipment is sent to an  
International distributor.  
2. Items furnished by Miller, but manufactured by others,  
such as engines or trade accessories. These items are  
covered by the manufacturers warranty, if any.  
Support  
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.  
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.  
1. 5 Years Parts 3 Years Labor  
*
*
Original main power rectifiers  
Inverters (input and output rectifiers only)  
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.  
2. 3 Years Parts and Labor  
*
*
*
*
*
*
Transformer/Rectifier Power Sources  
Plasma Arc Cutting Power Sources  
Semi-Automatic and Automatic Wire Feeders  
Inverter Power Supplies  
In the event of a warranty claim covered by this warranty, the  
exclusive remedies shall be, at Millers 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 customers risk and expense. Millers 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.  
Intellitig  
Engine Driven Welding Generators  
(NOTE: Engines are warranted separately by  
the engine manufacturer.)  
3. 1 Year Parts and Labor  
*
*
DS-2 Wire Feeder  
Motor Driven Guns (w/exception of Spoolmate  
185 & Spoolmate 250)  
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES  
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE  
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR  
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR  
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF  
PROFIT), WHETHER BASED ON CONTRACT, TORT OR  
ANY OTHER LEGAL THEORY.  
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Process Controllers  
Positioners and Controllers  
Automatic Motion Devices  
RFCS Foot Controls  
Induction Heating Power Sources  
Water Coolant Systems  
HF Units  
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN  
AND ANY IMPLIED WARRANTY, GUARANTY OR  
REPRESENTATION AS TO PERFORMANCE, AND ANY  
REMEDY FOR BREACH OF CONTRACT TORT OR ANY  
OTHER LEGAL THEORY WHICH, BUT FOR THIS  
Grids  
Maxstar 140  
PROVISION,  
MIGHT  
ARISE  
BY  
IMPLICATION,  
Spot Welders  
OPERATION OF LAW, CUSTOM OF TRADE OR COURSE  
OF DEALING, INCLUDING ANY IMPLIED WARRANTY OF  
MERCHANTABILITY OR FITNESS FOR PARTICULAR  
PURPOSE, WITH RESPECT TO ANY AND ALL  
EQUIPMENT FURNISHED BY MILLER IS EXCLUDED AND  
DISCLAIMED BY MILLER.  
Load Banks  
Miller Cyclomatic Equipment  
Running Gear/Trailers  
Plasma Cutting Torches (except APT & SAF  
Models)  
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.  
*
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.)  
In Canada, legislation in some provinces provides for certain  
additional warranties or remedies other than as stated herein,  
and to the extent that they may not be waived, the limitations  
and exclusions set out above may not apply. This Limited  
Warranty provides specific legal rights, and other rights may  
be available, but may vary from province to province.  
4. 6 Months Batteries  
5. 90 Days Parts  
*
*
MIG Guns/TIG Torches  
Induction Heating Coils and Blankets  
miller_warr 7/00  
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Owners 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  
to locate a DISTRIBUTOR or SERVICE AGENCY near you.  
Always provide Model Name and Serial/Style Number.  
Contact your Distributor for:  
Welding Supplies and Consumables  
Options and Accessories  
Personal Safety Equipment  
Service and Repair  
Miller Electric Mfg. Co.  
An Illinois Tool Works Company  
1635 West Spencer Street  
Appleton, WI 54914 USA  
Replacement Parts  
Training (Schools, Videos, Books)  
International HeadquartersUSA  
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  
www.MillerWelds.com  
Contact the Delivering Carrier for:  
File a claim for loss or damage during  
shipment.  
For assistance in filing or settling claims,  
contact your distributor and/or equipment  
manufacturers Transportation Department.  
PRINTED IN USA  
2001 Miller Electric Mfg. Co. 1/01  
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