Miller Electric ST 44 Series Wire Feeder Owner`s manual

OM-216 655K
2012−05
Processes
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
Description
Wire Feeder
ST 44 Series Wire Feeder
CE
www.MillerWelds.com
OWNER’S MANUAL
From Miller to You
Thank you and congratulations on choosing Miller. Now you can get the
job done and get it done right. We know you don’t have time to do it any
other way.
That’s why when Niels Miller first started building arc welders in 1929,
he made sure his products offered long-lasting value and superior quality.
Like you, his customers couldn’t afford anything less. Miller products had
to be more than the best they could be. They had to be the best you could
buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They will
help you protect yourself against potential hazards on the worksite. We’ve
made installation and operation quick and easy. With Miller you can
count on years of reliable service with proper maintenance. And if for
some reason the unit needs repair, there’s a Troubleshooting section that
will help you figure out what the problem is. The parts list will then help
you to decide which exact part you may need to fix the problem.
Warranty and service information for your particular model are also
provided.
Miller Electric manufactures a full line of
welders and welding related equipment. For
information on other quality Miller products, contact your local Miller
distributor to receive the latest full line catalog or individual catalog sheets.
Working as hard as you do
− every power source from
Miller is backed by the most
hassle-free warranty in the
business.
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. California Proposition 65 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5. Principal Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-6. EMF Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 − DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1. Warning Label Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2. Electric Shock And Pinch Hazard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3. WEEE Symbol (For Products Sold Within The EU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4. Symbols and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 − INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1. Important Information Regarding CE Products (Sold Within The EU) . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-2. Serial Number And Rating Label Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-3. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-4. Gun Recommendation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-5. Equipment Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-6. 14-Pin Plug Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-7. Connecting Welding Gun And Weld Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-8. Installing Wire Guide And Drive Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 − OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1. ST 44 Series Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-2. Run-In Control and Burnback Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 − MAINTENANCE & TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1. Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 − ELECTRICAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 7 − PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARRANTY
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DECLARATION OF CONFORMITY
for European Community (CE marked) products.
ITW Welding Products Italy S.r.l Via Privata Iseo 6/E, 20098 San Giuliano M.se, (MI) Italy declares that
the product(s) identified in this declaration conform to the essential requirements and provisions of
the stated Council Directive(s) and Standard(s).
Product/Apparatus Identification:
Product
Stock Number
ST 44
029007406
ST 44 c/w Digital A/V/WFS, Water Kit
029007404
Council Directives:

2006/95/EC Low Voltage

2004/108/EC Electromagnetic Compatibility
Standards:

IEC 60974­1 Arc Welding Equipment ­ Welding Power Sources: edition 3, 2005­07.

IEC 60974­5 Arc Welding Equipment – Wire Feeders: edition 2, 2007­11.

IEC 60974­10 Arc Welding Equipment ­ Electromagnetic Compatibility Requirements: edition 2.0, 2007­08.

EN 50445:2008 Product family standard to demonstrate compliance of equipment for resistance welding, arc
welding and allied processes with the basic restrictions related to human exposure to
electromagnetic fields
(0Hz­300Hz)
EU Signatory:
December 13th, 2010
___________________________________________________________________________________
Massimigliano Lavarini
Date of Declaration
ELECTRONIC ENGINEER R&D TECH. SUPPORT
956 142 828
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
som 2011−10
7
Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions.
1-1. Symbol Usage
DANGER! − Indicates a hazardous situation which, if
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 explained in the text.
NOTICE − Indicates statements not related to personal injury.
. Indicates special instructions.
This group of symbols means Warning! Watch Out! ELECTRIC
SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid the
hazards.
1-2. Arc Welding Hazards
The symbols shown below are used throughout this manual
to call attention to and identify possible hazards. When you
see the symbol, watch out, and follow the related instructions
to avoid the hazard. The safety information given below is
only a summary of the more complete safety information
found in the Safety Standards listed in Section 1-5. Read and
follow all Safety Standards.
Only qualified persons should install, operate, maintain, and
repair this unit.
During operation, keep everybody, especially children, away.
D Always verify the supply ground − check and be sure that input
power cord ground wire is properly connected to ground terminal in
disconnect box or that cord plug is connected to a properly
grounded receptacle outlet.
D When making input connections, attach proper grounding conductor first − double-check connections.
D Keep cords dry, free of oil and grease, and protected from hot metal
and sparks.
D Frequently inspect input power cord for damage or bare wiring −
replace cord immediately if damaged − bare wiring can kill.
D Turn off all equipment when not in use.
D Do not use worn, damaged, undersized, or poorly spliced cables.
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocks
or severe burns. The electrode and work circuit is
electrically live whenever the output is on. The input
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
grounded equipment is a hazard.
D Do not touch live electrical parts.
D Wear dry, hole-free insulating gloves and body protection.
D Insulate yourself from work and ground using dry insulating mats
or covers big enough to prevent any physical contact with the work
or ground.
D Do not use AC output in damp areas, if movement is confined, or if
there is a danger of falling.
D Use AC output ONLY if required for the welding process.
D If AC output is required, use remote output control if present on
unit.
D Additional safety precautions are required when any of the following electrically hazardous conditions are present: in damp
locations or while wearing wet clothing; on metal structures such
as floors, gratings, or scaffolds; when in cramped positions such
as sitting, kneeling, or lying; or when there is a high risk of unavoidable or accidental contact with the workpiece or ground. For these
conditions, use the following equipment in order presented: 1) a
semiautomatic DC constant voltage (wire) welder, 2) a DC manual
(stick) welder, or 3) an AC welder with reduced open-circuit voltage. In most situations, use of a DC, constant voltage wire welder
is recommended. And, do not work alone!
D Disconnect input power or stop engine before installing or
servicing this equipment. Lockout/tagout input power according to
OSHA 29 CFR 1910.147 (see Safety Standards).
D Properly install, ground, and operate this equipment according to
its Owner’s Manual and national, state, and local codes.
D Do not drape cables over your body.
D If earth grounding of the workpiece is required, ground it directly
with a separate cable.
D Do not touch electrode if you are in contact with the work, ground,
or another electrode from a different machine.
D Do not touch electrode holders connected to two welding machines at the same time since double open-circuit voltage will be
present.
D Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
D Wear a safety harness if working above floor level.
D Keep all panels and covers securely in place.
D Clamp work cable with good metal-to-metal contact to workpiece
or worktable as near the weld as practical.
D Insulate work clamp when not connected to workpiece to prevent
contact with any metal object.
D Do not connect more than one electrode or work cable to any
single weld output terminal. Disconnect cable for process not in
use.
SIGNIFICANT DC VOLTAGE exists in inverter welding power sources AFTER removal of input power.
D Turn Off inverter, disconnect input power, and discharge input
capacitors according to instructions in Maintenance Section
before touching any parts.
HOT PARTS can burn.
D Do not touch hot parts bare handed.
D Allow cooling period before working on equipment.
D To handle hot parts, use proper tools and/or
wear heavy, insulated welding gloves and
clothing to prevent burns.
OM-216 655 Page 1
FUMES AND GASES can be hazardous.
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to your
health.
D Keep your head out of the fumes. Do not breathe the fumes.
D If inside, ventilate the area and/or use local forced ventilation at the
arc to remove welding fumes and gases.
D If ventilation is poor, wear an approved air-supplied respirator.
D Read and understand the Material Safety Data Sheets (MSDSs)
and the manufacturer’s instructions for metals, consumables,
coatings, cleaners, and degreasers.
D Work in a confined space only if it is well ventilated, or while
wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding fumes and gases can displace air and
lower the oxygen level causing injury or death. Be sure the breathing air is safe.
D Do not weld in locations near degreasing, cleaning, or spraying operations. The heat and rays of the arc can react with vapors to form
highly toxic and irritating gases.
D Do not weld on coated metals, such as galvanized, lead, or
cadmium plated steel, unless the coating is removed from the weld
area, the area is well ventilated, and while wearing an air-supplied
respirator. The coatings and any metals containing these elements
can give off toxic fumes if welded.
ARC RAYS can burn eyes and skin.
Arc rays from the welding process produce intense
visible and invisible (ultraviolet and infrared) rays
that can burn eyes and skin. Sparks fly off from the
weld.
D Wear an approved welding helmet fitted with a proper shade of
filter lenses to protect your face and eyes from arc rays and
sparks when welding or watching (see ANSI Z49.1 and Z87.1
listed in Safety Standards).
D Wear approved safety glasses with side shields under your
helmet.
D Use protective screens or barriers to protect others from flash,
glare and sparks; warn others not to watch the arc.
D Wear protective clothing made from durable, flame-resistant
material (leather, heavy cotton, or wool) and foot protection.
WELDING can cause fire or explosion.
Welding on closed containers, such as tanks,
drums, or pipes, can cause them to blow up. Sparks
can fly off from the welding arc. The flying sparks, hot
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.
D Remove all flammables within 35 ft (10.7 m) of the welding arc. If
this is not possible, tightly cover them with approved covers.
D Do not weld where flying sparks can strike flammable material.
D Protect yourself and others from flying sparks and hot metal.
D Be alert that welding sparks and hot materials from welding can
easily go through small cracks and openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that welding on a ceiling, floor, bulkhead, or partition can
cause fire on the hidden side.
D Do not weld on containers that have held combustibles, or on
closed containers such as tanks, drums, or pipes unless they are
properly prepared according to AWS F4.1 and AWS A6.0 (see
Safety Standards).
D Do not weld where the atmosphere may contain flammable dust,
gas, or liquid vapors (such as gasoline).
D Connect work cable to the work as close to the welding area as
practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock, sparks, and fire
hazards.
D Do not use welder to thaw frozen pipes.
OM-216 665 Page 2
D Remove stick electrode from holder or cut off welding wire at
contact tip when not in use.
D Wear oil-free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes, and a cap.
D Remove any combustibles, such as a butane lighter or matches,
from your person before doing any welding.
D After completion of work, inspect area to ensure it is free of sparks,
glowing embers, and flames.
D Use only correct fuses or circuit breakers. Do not oversize or bypass them.
D Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B
for hot work and have a fire watcher and extinguisher nearby.
FLYING METAL or DIRT can injure eyes.
D Welding, chipping, wire brushing, and grinding
cause sparks and flying metal. As welds cool,
they can throw off slag.
D Wear approved safety glasses with side
shields even under your welding helmet.
BUILDUP OF GAS can injure or kill.
D Shut off compressed gas supply when not in use.
D Always ventilate confined spaces or use
approved air-supplied respirator.
ELECTRIC AND MAGNETIC FIELDS (EMF)
can affect Implanted Medical Devices.
D Wearers of Pacemakers and other Implanted
Medical Devices should keep away.
D Implanted Medical 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.
NOISE can damage hearing.
Noise from some processes or equipment can
damage hearing.
D Wear approved ear protection if noise level is
high.
CYLINDERS can explode if damaged.
Compressed gas cylinders contain gas under high
pressure. If damaged, a cylinder can explode. Since
gas cylinders are normally part of the welding
process, be sure to treat them carefully.
D Protect compressed gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open flames, sparks, and arcs.
D Install cylinders in an upright position by securing to a stationary
support or cylinder rack to prevent falling or tipping.
D Keep cylinders away from any welding or other electrical circuits.
D Never drape a welding torch over a gas cylinder.
D Never allow a welding electrode to touch any cylinder.
D Never weld on a pressurized cylinder − explosion will result.
D Use only correct compressed gas cylinders, regulators, hoses,
and fittings designed for the specific application; maintain them
and associated parts in good condition.
D Turn face away from valve outlet when opening cylinder valve.
D Keep protective cap in place over valve except when cylinder is in
use or connected for use.
D Use the right equipment, correct procedures, and sufficient number of persons to lift and move cylinders.
D Read and follow instructions on compressed gas cylinders,
associated equipment, and Compressed Gas Association (CGA)
publication P-1 listed in Safety Standards.
1-3. Additional Symbols For Installation, Operation, And Maintenance
FIRE OR EXPLOSION hazard.
BATTERY EXPLOSION can injure.
D Do not install or place unit on, over, or near
combustible surfaces.
D Do not install unit near flammables.
D Do not overload building wiring − be sure power supply system is
properly sized, rated, and protected to handle this unit.
D Do not use welder to charge batteries or jump
start vehicles unless it has a battery charging
feature designed for this purpose.
MOVING PARTS can injure.
D Keep away from moving parts such as fans.
D Keep all doors, panels, covers, and guards
closed and securely in place.
FALLING EQUIPMENT can injure.
D Use lifting eye to lift unit only, NOT running
gear, gas cylinders, or any other accessories.
D Use equipment of adequate capacity to lift and
support unit.
D If using lift forks to move unit, be sure forks are long enough to
extend beyond opposite side of unit.
D Keep equipment (cables and cords) away from moving vehicles
when working from an aerial location.
D Follow the guidelines in the Applications Manual for the Revised
NIOSH Lifting Equation (Publication No. 94−110) when manually lifting heavy parts or equipment.
OVERUSE can cause OVERHEATING
D Allow cooling period; follow rated duty cycle.
D Reduce current or reduce duty cycle before
starting to weld again.
D Do not block or filter airflow to unit.
D Have only qualified persons remove doors, panels, covers, or
guards for maintenance and troubleshooting as necessary.
D Reinstall doors, panels, covers, or guards when maintenance is
finished and before reconnecting input power.
READ INSTRUCTIONS.
D Read and follow all labels and the Owner’s
Manual carefully before installing, operating, or
servicing unit. Read the safety information at
the beginning of the manual and in each
section.
D Use only genuine replacement parts from the manufacturer.
D Perform maintenance and service according to the Owner’s
Manuals, industry standards, and national, state, and local
codes.
H.F. RADIATION can cause interference.
FLYING SPARKS can injure.
D Wear a face shield to protect eyes and face.
D Shape tungsten electrode only on grinder with
proper guards in a safe location wearing proper
face, hand, and body protection.
D Sparks can cause fires — keep flammables away.
STATIC (ESD) can damage PC boards.
D
D
D
D
D Put on grounded wrist strap BEFORE handling
boards or parts.
D Use proper static-proof bags and boxes to
store, move, or ship PC boards.
ARC WELDING can cause interference.
MOVING PARTS can injure.
D Keep away from moving parts.
D Keep away from pinch points such as drive
rolls.
WELDING WIRE can injure.
D Do not press gun trigger until instructed to do
so.
D Do not point gun toward any part of the body,
other people, or any metal when threading
welding wire.
D High-frequency (H.F.) can interfere with radio
navigation, safety services, computers, and
communications equipment.
D Have only qualified persons familiar with
electronic equipment perform this installation.
The user is responsible for having a qualified electrician promptly correct any interference problem resulting from the installation.
If notified by the FCC about interference, stop using the
equipment at once.
Have the installation regularly checked and maintained.
Keep high-frequency source doors and panels tightly shut, keep
spark gaps at correct setting, and use grounding and shielding to
minimize the possibility of interference.
D
D
D
D
D Electromagnetic energy can interfere with
sensitive electronic equipment such as
computers and computer-driven equipment
such as robots.
D Be sure all equipment in the welding area is
electromagnetically compatible.
To reduce possible interference, keep weld cables as short as
possible, close together, and down low, such as on the floor.
Locate welding operation 100 meters from any sensitive electronic equipment.
Be sure this welding machine is installed and grounded
according to this manual.
If interference still occurs, the user must take extra measures
such as moving the welding machine, using shielded cables,
using line filters, or shielding the work area.
OM-216 655 Page 3
1-4. California Proposition 65 Warnings
Welding or cutting equipment produces fumes or gases
which contain chemicals known to the State of California to
cause birth defects and, in some cases, cancer. (California
Health & Safety Code Section 25249.5 et seq.)
This product contains chemicals, including lead, known to
the state of California to cause cancer, birth defects, or other
reproductive harm. Wash hands after use.
1-5. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,
is available as a free download from the American Welding Society at
http://www.aws.org or purchased from Global Engineering Documents
(phone: 1-877-413-5184, website: www.global.ihs.com).
Safe Practices for the Preparation of Containers and Piping for Welding
and Cutting, American Welding Society Standard AWS F4.1, from Global Engineering Documents (phone: 1-877-413-5184, website:
www.global.ihs.com).
Safe Practices for Welding and Cutting Containers that have Held Combustibles, American Welding Society Standard AWS A6.0, from Global
Engineering Documents (phone: 1-877-413-5184,
website: www.global.ihs.com).
National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Quincy, MA 02269 (phone: 1-800-344-3555, website:
www.nfpa.org and www. sparky.org).
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 14501 George Carter Way, Suite
103, Chantilly, VA 20151 (phone: 703-788-2700, website:www.cganet.com).
Safety in Welding, Cutting, and Allied Processes, CSA Standard
W117.2, from Canadian Standards Association, Standards Sales, 5060
Spectrum Way, Suite 100, Ontario, Canada L4W 5NS (phone:
800-463-6727, website: www.csa-international.org).
Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1, from American National Standards Institute,
25 West 43rd Street, New York, NY 10036 (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,
Quincy, MA 02269 (phone: 1-800-344-3555, website: www.nfpa.org.
OSHA, Occupational Safety and Health Standards for General Industry, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,
and Part 1926, Subpart J, from U.S. Government Printing Office, Superintendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954
(phone: 1-866-512-1800) (there are 10 OSHA Regional Offices—
phone for Region 5, Chicago, is 312-353-2220, website:
www.osha.gov).
Applications Manual for the Revised NIOSH Lifting Equation, The National Institute for Occupational Safety and Health (NIOSH), 1600
Clifton Rd, Atlanta, GA 30333 (phone: 1-800-232-4636, website:
www.cdc.gov/NIOSH).
1-6. EMF Information
Electric current flowing through any conductor causes localized electric
and magnetic fields (EMF). Welding current creates an EMF field
around the welding circuit and welding equipment. EMF fields may interfere with some medical implants, e.g. pacemakers. Protective
measures for persons wearing medical implants have to be taken. For
example, restrict access for passers−by or conduct individual risk assessment for welders. All welders should use the following procedures
in order to minimize exposure to EMF fields from the welding circuit:
1. Keep cables close together by twisting or taping them, or using a
cable cover.
2. Do not place your body between welding cables. Arrange cables
to one side and away from the operator.
3. Do not coil or drape cables around your body.
OM-216 665 Page 4
4. Keep head and trunk as far away from the equipment in the
welding circuit as possible.
5. Connect work clamp to workpiece as close to the weld as
possible.
6. Do not work next to, sit or lean on the welding power source.
7. Do not weld whilst carrying the welding power source or wire
feeder.
About Implanted Medical Devices:
Implanted Medical 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 recommended.
SECTION 2 − DEFINITIONS
2-1. Warning Label Definitions
A
B
C
A. Warning! Watch Out! There are possible
hazards as shown by the symbols.
B. Drive rolls can injure fingers.
C. Welding wire and drive parts are at
welding voltage during operation − keep
hands and metal objects clear.
1 Electric shock can kill.
1.1 Wear dry insulating gloves. Do not touch
electrode with bare hand. Do not wear
wet or damaged gloves.
1.2 Protect yourself from electric shock by
insulating yourself from work and ground.
1.3 Disconnect input plug or power before
working on machine.
2 Breathing welding fumes can be
hazardous to your health.
2.1 Keep your head out of the fumes.
2.2 Use forced ventilation or local exhaust to
remove the fumes.
2.3 Use ventilating fan to remove fumes.
3 Welding sparks can cause explosion or
fire.
3.1 Keep flammables away from welding.
Don’t weld near flammables.
3.2 Welding sparks can cause fires. Have a
fire extinguisher nearby and have a
watch person ready to use it.
3.3 Do not weld on drums or any closed
containers.
4 Arc rays can burn eyes and injure skin.
4.1 Wear hat and safety glasses. Use ear
protection and button shirt collar. Use
welding helmet with correct shade of
filter. Wear complete body protection.
5 Become trained and read the instructions
before working on the machine or
welding.
6 Do not remove or paint over (cover) the
label.
?
178936-B
OM-216 655 Page 5
2-2. Electric Shock And Pinch Hazard
1
1
2
3
Warning! Watch Out! There
are possible hazards as
shown by the symbols.
Drive rolls can injure fingers
Welding wire and drive parts
are at welding voltage during
operation − keep hands and
metal objects away.
178937-B
2
3
2-3. WEEE Symbol (For Products Sold Within The EU)
Do not discard this product with
general waste.
Reuse or recycle Waste Electrical
and Electronic Equipment (WEEE)
by disposing at a designated collection facility.
Contact your local recycling office
or your local distributor for further
information.
2-4. Symbols and Definitions
On
A
IP
Off
Input
Volts
Alternating Current
Hertz
Circuit Breaker
Wire Feed
Primary Voltage
Gas Metal Arc
Welding (GMAW)
Gun
Line Connection
Purge
Spot Weld Time
Spot Weld
Continuous Weld
Burnback Time
Preflow Time
Postflow Time
Read Instructions
Amperes
Degree Of
Protection
Jog
U2
Load Voltage
V
Hz
U1
I1
Primary Current
I2
Rated Current
Trigger Hold Off
Trigger Hold On
Water (Coolant)
Input
Remote
Run−in Control
Gas Flowmeter
Adjustment
OM-216 655 Page 6
Output
X
U1
Duty Cycle
Primary Voltage
Water (Coolant)
Output
SECTION 3 − INSTALLATION
3-1. Important Information Regarding CE Products (Sold Within The EU)
!
This equipment shall not be used by the general public as the EMF limits for the general public might be exceeded during welding.
This equipment is built in accordance with EN 60974−1 and is intended to be used only in an occupational environment (where the general public
access is prohibited or regulated in such a way as to be similar to occupational use) by an expert or an instructed person.
Wire feeders and ancillary equipment (such as torches, liquid cooling systems and arc striking and stabilizing devices) as part of the welding
circuit may not be a major contributor to the EMF. See the Owner’s Manuals for all components of the welding circuit for additional EMF exposure
information.
S
S
The EMF assessment on this equipment was conducted at 0.5 meter.
At a distance of 1 meter the EMF exposure values were less than 20% of the permissible values.
3-2. Serial Number And Rating Label Location
The serial number and rating information for this product is located on back . Use rating label to determine input power requirements and/or rated output.
For future reference, write serial number in space provided on back cover of this manual.
Operating Temperature Range: 14 F (-10 C) to 104 F (40 C). Ratings were developed at an ambient temperature of 20 C to 25 C.
3-3. Specifications
Type of Input
Power
Welding Power
Source Type
24 Volts AC Single
Phase
5 Amperes 50/60
Hz
Constant Voltage
(CV) DC with 14
pin and Contactor
Control
Wire
Diameter
Range
Wire Feed
Speed Range
Welding
Circuit Rating
0.6 to 2.0 mm
(0.23 to 5/64 in.)
0 to 20 mpm
(0 to 788 ipm)
Max Spool Weight:
15 kg (33.0 lb.)
100 Volts,
500 Amperes,
100%
Duty Cycle
Overall
Dimensions
Weight
Length: 650 mm
(25.5 in.)
Width: 220 mm
(8.65 in.)
20.0 kg − Gross
18.0 kg − Net
Height: 420 mm
(16.5 in.)
3-4. Gun Recommendation Table
Process
Gun
GMAW − Hard or Cored Wires
Roughneck C-Series Guns: 300, 400, 500, And 600 Amp.
FCAW − Self-Shielding Wires
FC-1260 Or FC-1150
3-5. Equipment Connection Diagrams
1
1
CV Welding Power Source with
14 pin Amphenol Receptacle
2
Interconnecting Control Cord
(Required)
Weld Cable (Required)
Work
3
4
2
4
3
OM-216 655 Page 7
3-6. 14-Pin Plug Information
Pin*
J
I
N
H
G
A
K
B
L
M
F
C
E
D
Pin Information
A
24 volts AC with respect to pin G.
B
Contact closure to A completes 24 volts AC contactor control circuit.
G
Circuit common for 24 volts AC circuit.
C
+10 volts DC output to remote control with respect to pin D.
D
Remote control circuit common.
E
0 to +10 volts DC input command signal from remote control with respect to pin D.
H
Voltage feedback; 0 to 10 volts DC, 1 V/10 arc volts
*The remaining pins are not used.
Ref. S-0004-A
3-7. Connecting Welding Gun And Weld Cable
1
Gun Securing Knob
2
Gun Block
3
Gun Outlet Wire Guide
Loosen knob, insert gun into block.
Position outlet wire guide as close
as possible to drive rolls without
touching. Tighten knob.
1
2
3
US Torch
4
4
5
Gun Trigger Receptacle
Gun Trigger Plug
5
1
2
Euro Torch
956142675_B
OM-216 655 Page 8
3-8. Installing Wire Guide And Drive Roll
1
2
Inlet Wire Guide
Intermediate Wire Guide
Install and secure inlet wire guide,
and intermediate wire guide.
3
Drive Roll (4)
Install drive rolls and turn drive roll
nut one click.
1−2
During maintenance intervals,
remove drive rolls, and clean
grooves using a wire brush. Check
general condition of drive rolls.
Aligning Wire Guide And Drive
Rolls:
3
Correct Alignment
Incorrect Alignment
View is from top of drive rolls
looking down with pressure assembly open.
Turn screw in or out until drive roll
groove lines up with wire guide.
Close pressure roll assembly.
Repeat for remaining drive rolls until all drive rolls line up with wire
guides as shown.
1
2
3
Tools Needed:
3/8 in.
1/4 in.
956142675_B
OM-216 655 Page 9
SECTION 4 − OPERATION
4-1. ST 44 Series Panel Controls
1
2
3
1
2
3
4
5
6
7
4
5
8
6
11
7
12
9
10
13
11
12
13
14
15
16
14
10
15
Voltage Control
Purge Control
Jog
2T−4T Switch
Power ON-OFF
Digital Voltmeter/MPM
Remote Control
Receptacle
In-Out Cooling
Connections For Torch
Torch Connection
Panel/Remote Control
Switch
Wire Speed Control
Circuit Breaker
Gas In Connector
Control Cable Connection
Weld Cable Connection
In-Out Cooling
Connections From Cooling
System
16
9
8
956.142.675-_B
4-2. Run-In Control and Burnback Control
1
Run-In Control
Use control to set wire feed speed
before arc initiation
After arc initiation, wire feed speed
is controlled by the wire feed speed
control on the front control panel.
2
Burnback Control
Control adjusts the time welding
wire is energized after wire feed
stops.
1
2
2
956.142.675_B
OM-216 655 Page 10
SECTION 5 − MAINTENANCE & TROUBLESHOOTING
5-1. Routine Maintenance
!
Disconnect power before maintaining.
3 Months
Repair Or
Replace
Cracked
Weld Cable
Replace
Unreadable
Labels
Clean And
Tighten
Weld
Terminals
Replace Cracked Parts
14-Pin Cord
Gun Cable
Gas Hose
6 Months
Clean Drive Rolls
OR
Blow Out Or Vacuum Inside,
During Heavy Service, Clean
Monthly
Notes
OM-216 655 Page 11
5-2. Troubleshooting
Problem
Unit is completely inoperative.
Solution
Check continuity of Power switch S1, and replace if necessary.
Reset circuit breaker CB1 if open.
Check input power source. See welding power source Technical Manual.
Wire does not feed, unit completely inop- Turn Power switch On.
erative.
Check 14−pin receptacle connections.
Check input power or the CB
Wire does not feed.
Check gun trigger connection at wire feeder. Check gun trigger leads and trigger switch. See gun Owner’s
Manual.
Have Factory Authorized Service Agent check drive motor and control board PC1.
Wire feeds erratically.
Readjust hub tension and drive roll pressure.
Use correct size drive roll (see Parts List).
Clean or replace dirty or worn drive roll.
Remove weld spatter around nozzle opening.
Replace contact tip or liner. See gun Owner’s Manual.
Have Factory Authorized Service Agent check drive motor and control board PC1.
Wire feeds when Jog switch is pressed Check gun trigger connection at wire feeder. Check gun trigger leads and trigger switch. See gun Owner’s
but not when gun trigger is pressed.
Manual.
Wire does not feed with Jog button S2B Check continuity of Jog button S3, and replace if necessary.
pressed.
Check motor control board PC1 and connections, and replace if necessary
Electrode wire feeding stops or feeds
erratically during welding.
Realign drive rolls.
Check hub assembly (see Parts List).
Wire feeds as soon as power is applied. Check gun trigger. See gun Owner’s Manual.
Wire does not feed until trigger is Check for short between gun trigger leads and weld cable. Repair or replace gun trigger leads.
pressed but continues to feed after trigger is released.
Gas valve rattles loudly and wire feeds Check for short between gun trigger leads and weld cable. Repair or replace gun trigger leads.
slowly or erratically.
Gas does not flow; wire feeds.
Check gas valve and flowmeter.
Wire feeds, but gas does not flow with Check coil voltage and connections of gas valve GS1. Check continuity of coil. Replace GS1 if necessary.
gun trigger pressed.
Check continuity of Purge switch S2A, and replace if necessary.
Wire feeds, but gas does not flow with Check continuity of Purge switch S2A, and replace if necessary.
Purge switch S2 pressed.
Check coil voltage and connections of gas valve GS1. Check continuity of coil. Replace GS1 if necessary.
Wire feeds and electrode wire is ener- Check coil voltage and connections of gas valve GS1. Check continuity of coil. Replace GS1 if necessary.
gized, but gas flow is irregular.
Clear blockage in gas hose or replace hose.
Clear blockage in gun. See gun Owner’s Manual.
Motor runs at full speed.
Check motor control board PC1 and connections, and replace if necessary.
Check resistance and connections of active wire speed potentiometers and replace if necessary.
Wire drive motor coasts (no brake at trig- Check motor control board PC1 and connections, and replace if necessary.
ger release).
Meter does not work properly.
OM-216 655 Page 12
Check optional meter board PC2 and connections, and replace if necessary
SECTION 6 − ELECTRICAL DIAGRAM
956.142.484-C
OM-216 655 Page 13
SECTION 7 − PARTS LIST
. Hardware is common and
20
not available unless listed.
21
19
22
23
18
17
16
58
15
28
14
29
30
26
13
31
27
32
12
11
35
24
9
5
2
3
7
36
25
10
6
33
34
37
59
38
8
39
40
4
40
41
1
42
53
52
51
50
49
Fig. 7-2
48
47
44
46
45
43
54
55
56
57
Figure 7-1. ST 44 Complete Assembly (Optional Equipment Shown)
OM-216 655 Page 14
956.142.672_B
Item
No.
Dia.
Mkgs.
Part
No.
. . . 1 . . . . . . . . . . . 000058427
. . . 2 . . . . . . . . . . . 156032128
. . . 3 . . . . . . . . . . . 156018033
. . . 4 . . . . . . . . . . . 156009079
. . . 5 . . . . . . . . . . . 156032064
. . . 6 . . . . . . . . . . . 156009075
. . . 7 . . . . . . . . . . . 000186435
. . . 8 . . . . . . . . . . . . . . 287119
. . . 9 . . . . . . . . . . . 057084128
. . . 10 . . . . . . . . . . . 027112275
. . . 11 . . . . . . . . . . . 556049403
. . . 12 . . . . . . . . . . . 556049404
. . . . . . . . . . . . . . . . . 656043012
. . . 13 . . . . . . . . . . . 056076216
. . . 14 . . . . . . . . . . . 056076192
. . . 15 . . . GS1 . . . 056061042
. . . 16 . . . CB1 . . . 056067188
. . . 17 . . . . . . . . . . . 156034005
. . . 18 . . . . . . . . . . . 116122319
. . . 19 . . . . . . . . . . . 156034004
. . . 20 . . . . . . . . . . . 000204326
. . . . . . . . . . . . . . . . . 000151187
. . . 21 . . . . . . . . . . . . . . 195585
. . . 22 . . . . . . . . . . +156121022
. . . 23 . . . . . . . . . . . 000178936
. . . 24 . . . . . . . . . . . 656026091
. . . 25 . . . . . . . . . . . 656026090
. . . 26 . . . . . . . . . . . 116118168
. . . 27 . . . . . . . . . . . 117060014
. . . 28 . . . . . . . . . . . 156005108
. . . 29 . . . . . . . . . . . 000006393
. . . 30 . . . PC2 . . . 057095012
. . . 31 . . . . . . . . . . . 000134201
. . . 32 . . . PC1 . . . 057084124
. . . 33 . . . . . . . . . . . 156005094
. . . 34 . . . . S3 . . . 056093022
. . . 35 . . . . S2 . . . 056093022
. . . 36 . . . . S4 . . . 056067260
. . . 37 . . . . S1 . . . 056067194
. . . 38 . . . . . . . . . . . 316029689
. . . 39 . . . . . . . . . 056076180
. . . . . . . . . . . . . . . . . 656043035
. . . 40 . . . . . . . . . . . 000207076
. . . 41 . . . . . . . . . . . 556049402
. . . 42 . . . . . . . . . . . 556049401
. . . 41 . . . . . . . . . . . 656043012
. . . 42 . . . . . . . . . . . 656043012
. . . 43 . . . . . . . . . . *756005024
. . . 43 . . . . . . . . . . . 656089035
. . . 44 . . . . S4 . 056067260
. . . . . . . . . . . . . . . 656043031
. . . 45 . . . . . . . . . . . 316029691
. . . 46 . . . . . . . . . . . 116118167
. . . 47 . . . . R1 . . . 056059182
. . . 48 . . . . . . . . . . . 000178937
. . . 49 . . . . R2 . . . 056059182
. . . . . . . . . . . . . . . . . 656043033
. . . 50 . . . . . . . . . . . 116005324
. . . 51 . . R3, R4 . 056059277
. . . 52 . . . . . . . . . . +116006130
. . . 53 . . . . . . . . . . . 656110012
Description
Figure 7−1. ST 44 Complete Assembly
Qty
Basic
Digital
. . Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Washer, flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Washer,plastic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Circuit Card, motor reed control . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Weld cable, w/lugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Fitting, Quick Connect Water, Male Red . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Fitting, Quick Connect Water, Male Blu . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Cover Blanking Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . Receptacle, dinse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Receptacle, 14 pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Solenoid Valve, 24VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Circuit Breaker, 5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . .
. . Side panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Hinge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . .
. . Consumable Storage Box (Includes) . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . . . Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Handle Assy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Wrapper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Label, warning general precautionary . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Hose, 6x11x570 red water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Hose, 6x11x570 blu water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Panel, rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Baffle Plate, centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Support, spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . .
. . Circuit Card, digital meter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Circuit Card, spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . . . . . .
. . Circuit Card, control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Circuit Card, support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Switch, gas purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Switch, wire jog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Switch, 2T 4T trigger latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Switch, power on/off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Nameplate, front, upper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Receptacle, 7 pin (Includes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
..
Cover Blanking Cap, 22.5 mm . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Knob, pointer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . . . . . . .
. . Fitting, Quick Connect Water, Female Blu . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Fitting, Quick Connect Water, Female Red . . . . . . . . . . . . . . . . . . . . . . . . . .
. . Covering Blank Cap, 12.7 mm . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . Covering Blank Cap, 12.7 mm . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . Flange, Euro adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Flange, US torch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Switch, SPDT 10A/250V remote control (includes) . . . . . . . . . 1 . . . . . . .
..
Cover Blanking Cap, 10 x 13 mm . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Nameplate,front, lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Panel, front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Potentiometer, wire speed control . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Label, warning electric shock and pinch . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Potentiometer, voltage control (includes) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
Cover Blanking Cap, 9.7 mm . . . . . . . . . . . . . . . . . . . . . . . . . . 1
. . Motor Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Potentiometer 10.0k ohm Run In/Burn Back . . . . . . . . . . . . . . . 2 . . . . . . .
. . Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . . . . .
. . Foot, rubber mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . . . . . . .
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
OM-216 655 Page 15
Item
No.
...
...
...
...
...
...
54
55
56
57
58
59
Dia.
Mkgs.
Part
No.
Description
Qty
Basic
Figure 7−1. ST 44 Complete Assembly (continued)
. . . . . . . . . . . 656026084
. . . . . . . . . . *V57052030
. . . . . . . . . . . 156090015
. . . . . . . . . . . 057028067
. . . . . . . . . . . 956142906
. . . . . . . . . . . 956142486
..
..
..
..
..
..
Hose, gas braided 5x8,5x600 black . . . . . . . . . . . . . . . . . . . . . .
Euroadapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guide, wire Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
US torch plug connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nameplate, rear ST 44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nameplate, potentiometer ST 44 . . . . . . . . . . . . . . . . . . . . . . . .
1
1
1
1
1
1
Digital
.......
.......
.......
.......
.......
.......
1
1
1
1
1
1
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
+ When ordering a component originally displaying a precautionary label, the label should also be ordered.
* Euro torch models only.
 Optional
. Hardware is common and
not available unless listed.
25
20
24
23
21
19
1
22
26
16
15
27
31
27
7
28
33
17
3
2
3
32
6
4
8
26
10
16
12
15
5
34
26
16
33
15
14
11
26
13
16
18
10
15
24
30
29
23
9
21
22
11
19
956.142.674_B
Figure 7-2. 4 Roll Wire Drive Assembly (All Models)
OM-216 655 Page 16
Item
No.
Dia.
Mkgs.
Part
No.
Qty
Description
Figure 7-2. 4 Roll Wire Drive Assembly (All Models)
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
. . . . M1 . 057010051 . . .
. . . . . . . . . . . . . 601966 . . .
. . . . . . . . . . . . . 602213 . . .
. . . . . . . . . . . . . 010910 . . .
. . . . . . . . . . 656005030 . . .
. . . . . . . . . . 156019746 . . .
. . . . . . . . . . 656005027 . . .
. . . . . . . . . . . . . 238728 . . .
. . . . . . . . . . . . . 238726 . . .
. . . . . . . . . . . . . 221654 . . .
. . . . . . . . . . 156019200 . . .
. . . . . . . . . . . . . 173618 . . .
. . . . . . . . . . . . . 602200 . . .
. . . . . . . . . . . . . 124609 . . .
. . . . . . . . . . . . . 602209 . . .
. . . . . . . . . . . . . 172075 . . .
. . . . . . . . . . . . . 601872 . . .
. . . . . . . . . . 156009124 . . .
. . . . . . . . . . . . . 010224 . . .
. . . . . . . . . . . . . 230691 . . .
. . . . . . . . . . . . . 225718 . . .
. . . . . . . . . . . . . 198080 . . .
. . . . . . . . . . . . . 196897 . . .
. . . . . . . . . . . . . 196895 . . .
. . . . . . . . . . . . . 203562 . . .
. . . . . . . . . . . . . 166072 . . .
. . . . . . . . . . . . . 151828 . . .
. . . . . . . . . . . . . 079634 . . .
. . . . . . . . . . 156019804 . . .
. . . . . . . . . . 156009145 . . .
. . . . . . . . . . . . . 045127 . . .
. . . . . . . . . . . . . 056207 . . .
. . . . . . . . . . . . . 054263 . . .
. . . . . . . . . . 756033039 . . .
Motor, Gear 24 V 100W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer, Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer, Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Insulator, Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, M6 x 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Insulator, Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lever, Mounting Pressure Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Housing, Adapter Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bushing, Insulating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, M6 x 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carrier Drive, Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer, Medium Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, M4 x 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, 250-20 x 1.25 Soc Hd-Hex Gr8 Pln . . . . . . . . . . . . . . . . . . . . . . . . . .
Carrier, Drive Roll w/Component 24 Pitch . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer, D5 x 15 x 1.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin, Spring CS .187 x 1.000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lever, Mounting Pressure Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener, Pinned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cup, Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spring, CPRSN .695 Od x .095 Wire x 1.500 . . . . . . . . . . . . . . . . . . . . . . . .
Knob, Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spacer, Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin, Cotter Hair .042 x .750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin, Hinge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, 5/16-18 x 1 Alloy Steel Socket Head Cap Screw Plain Finish . . . .
Washer, Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guide, Wire Intermediate Brass .023 − .052 . . . . . . . . . . . . . . . . . . . . . . . . .
Inlet, Wire Intermediate Brass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screw, Thumb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bushing, Snap-in D 22.9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
2
1
1
3
1
1
1
2
2
1
1
1
1
4
1
1
2
1
2
2
2
2
1
4
2
1
1
1
1
1
2
1
To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested
Replacement Parts. Model and serial number required when ordering parts from your local distributor.
OM-216 655 Page 17
Table 7-1. Drive Roll And Wire Guide Kits (4 Drive Roll)
. Base selection of drive rolls upon the following recommended usages:
1. V-Grooved rolls for hard wire.
2. U-Grooved rolls for soft and soft shelled cored wires.
3. U-Cogged rolls for extremely soft shelled wires (usually hard surfacing types).
4. V-Knurled rolls for hard shelled cored wires.
5. Drive roll types may be mixed to suit particular requirements (example: V-Knurled roll in combination with U-Grooved).
Wire Diameter
Metric
Fraction
Decimal
0.6 mm
0.023/0.025 in
0.023/0.025 in
0.8 mm
0.030 in
0.9 mm
0.035 in
1.0/1.2 mm
Kit No.
Drive Roll
Wire Guide
Part No.
Type
Inlet
Intermediate
087 132
087 130
V-Grooved
056 192
056 206
0.030 in
046 780
053 695
V-Grooved
056 192
056 206
0.035 in
046 781
053 700
V-Grooved
056 192
056 206
0.035/0.045 in
0.035/0.045 in
N/A
189 285
V-Grooved
156 193
056 207
1.0 mm
0.040 in
0.040 in
191 917
053 696
V-Grooved
056 192
056 206
1.2 mm
0.045 in
0.045 in
046 782
053 697
V-Grooved
056 193
056 207
1.6 mm
1/16 in
0.062 in
046 784
053 699
V-Grooved
056 195
056 209
0.9 mm
0.035 in
0.035 in
044 750
072 000
U-Grooved
056 192
056 206
1.2 mm
0.045 in
0.045 in
046 785
053 701
U-Grooved
056 193
056 207
1.3 mm
0.052 in
0.052 in
046 786
053 702
U-Grooved
056 193
056 207
1.6 mm
1/16 in
0.062 in
046 787
053 706
U-Grooved
056 195
056 209
2.0 mm
5/64 in
0.079 in
046 788
053 704
U-Grooved
056 195
056 209
0.9 mm
0.035 in
0.035 in
046 782
132 958
V-Knurled
056 192
056 206
1.2 mm
0.045 in
0.045 in
046 793
132 957
V-Knurled
056 193
056 207
1.3 mm
0.052 in
0.052 in
046 794
132 956
V-Knurled
056 193
056 207
1.6 mm
1/16 in
0.062 in
046 795
132 955
V-Knurled
056 195
056 209
1.8 mm
0.068-0.072 in
0.068-0.072 in
089 985
132 959
V-Knurled
056 195
056 209
2.0 mm
5/64 in
0.079 in
046 796
132 960
V-Knurled
056 195
056 209
1.2 mm
0.045 in
0.045 in
083 319
083 489
U-Cogged
056 193
056 207
1.3 mm
0.052 in
0.052 in
083 320
083 490
U-Cogged
056 193
056 207
1.6 mm
1/16 in
0.062 in
046 800
053 708
U-Cogged
056 195
056 209
2.0 mm
5/64 in
0.079 in
046 801
053 710
U-Cogged
056 195
056 209
OM-216 655 Page 18
Effective January 1, 2012
(Equipment with a serial number preface of MC or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other
guarantees or warranties expressed or implied.
LIMITED WARRANTY − Subject to the terms and conditions
below, ITW Welding Products Italy warrants to its original retail
purchaser that new Miller equipment sold after the effective date
of this limited warranty is free of defects in material and
workmanship at the time it is shipped by Miller. THIS
WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OF MERCHANTABILITY AND FITNESS.
Within the warranty periods listed below, Miller will repair or
replace any warranted parts or components that fail due to such
defects in material or workmanship. Miller must be notified in
writing within thirty (30) days of such defect or failure, at which
time Miller will provide instructions on the warranty claim
procedures to be followed.
Miller shall honor warranty claims on warranted equipment listed
below in the event of such a failure within the warranty time
periods. All warranty time periods start on the date the
equipment was delivered to the original retail purchaser or one
year after the equipment is shipped to a European distributor or
eighteen months after the equipment is shipped to an
International distributor.
1.
3 Years — Parts and Labor
*
*
*
*
*
*
3.
Auto-Darkening Helmet Lenses (No Labor)
Migmatic 175
HF Units
Water
Coolant
Systems
(EU
Models,
Non-Integrated)
1 Year — Parts and Labor Unless Specified
*
*
*
*
*
*
*
*
*
*
*
5.
Engine Driven Welding Generators
(NOTE: Engines are warranted separately by the
engine manufacturer.)
Inverter Power Sources (Unless Otherwise Stated)
Process Controllers
Semi-Automatic and Automatic Wire Feeders
Transformer/Rectifier Power Sources
Water Coolant System (Integrated)
2 Years — Parts
*
*
*
*
4.
Original main power rectifiers only to include SCRs,
diodes, and discrete rectifier modules with
exclusion of STR, Si, STi, STH and MPi series.
Automatic Motion Devices
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.)
Induction Heating Power Sources, Coolers, and
Electronic Controls/Recorders
Motor Driven Guns (w/exception of Spoolmate
Spoolguns)
Positioners and Controllers
Powered Air Purifying Respirator (PAPR) Blower
Unit (No Labor)
Racks
Running Gear and Trailers
Subarc Wire Drive Assemblies
Water
Coolant
Systems
(USA
Models,
Non-Integrated)
Work Stations/Weld Tables (No Labor)
6 Months — Parts
*
Batteries
90 Days — Parts
*
Accessory (Kits)
*
Canvas Covers
*
Induction Heating Coils and Blankets
*
MIG Guns
*
Remote Controls
*
Replacement Parts (No Labor)
*
Spoolmate Spoolguns
*
Cables and Non-Electronic Controls
Miller’s True Blue Limited Warranty shall not apply to:
1.
Consumable components; such as contact tips,
cutting nozzles, contactors, brushes, switches, slip
rings, relays or parts that fail due to normal wear.
2.
Items furnished by Miller, but manufactured by others, such
as engines or trade accessories. These items are covered
by the manufacturer’s warranty, if any.
3.
Equipment that has been modified by any party other than
Miller, or equipment that has been improperly installed,
improperly operated or misused based upon industry
standards, or equipment which has not had reasonable and
necessary maintenance, or equipment which has been
used for operation outside of the specifications for the
equipment.
5 Years Parts — 3 Years Labor
*
2.
6.
MILLER PRODUCTS ARE INTENDED FOR PURCHASE AND
USE BY COMMERCIAL/INDUSTRIAL USERS AND PERSONS
TRAINED AND EXPERIENCED IN THE USE AND
MAINTENANCE OF WELDING EQUIPMENT.
In the event of a warranty claim covered by this warranty, the
exclusive remedies shall be, at Miller’s option: (1) repair; or (2)
replacement; or, where authorized in writing by Miller in
appropriate cases, (3) the reasonable cost of repair or
replacement at an authorized Miller service station; or (4)
payment of or credit for the purchase price (less reasonable
depreciation based upon actual use) upon return of the goods at
customer’s risk and expense. Miller’s option of repair or
replacement will be F.O.B., Factory at ITW Welding Products
Group Europe or F.O.B. at a Miller authorized service facility as
determined by Miller. Therefore no compensation or
reimbursement for transportation costs of any kind will be
allowed.
TO THE EXTENT PERMITTED BY LAW, THE REMEDIES
PROVIDED HEREIN ARE THE SOLE AND EXCLUSIVE
REMEDIES. IN NO EVENT SHALL MILLER BE LIABLE FOR
DIRECT,
INDIRECT,
SPECIAL,
INCIDENTAL
OR
CONSEQUENTIAL DAMAGES (INCLUDING LOSS OF
PROFIT), WHETHER BASED ON CONTRACT, TORT OR ANY
OTHER LEGAL THEORY.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND
ANY
IMPLIED
WARRANTY,
GUARANTY
OR
REPRESENTATION AS TO PERFORMANCE, AND ANY
REMEDY FOR BREACH OF CONTRACT TORT OR ANY
OTHER LEGAL THEORY WHICH, BUT FOR THIS
PROVISION, MIGHT ARISE BY IMPLICATION, OPERATION
OF LAW, CUSTOM OF TRADE OR COURSE OF DEALING,
INCLUDING
ANY
IMPLIED
WARRANTY
OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE, WITH RESPECT TO ANY AND ALL EQUIPMENT
FURNISHED BY MILLER IS EXCLUDED AND DISCLAIMED
BY MILLER.
milan_warr 2012−01
Owner’s Record
Please complete and retain with your personal records.
Model Name
Serial/Style Number
Purchase Date
(Date which equipment was delivered to original customer.)
Distributor
Address
Country
Zip/Postal Code
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
Service and Repair
Replacement Parts
Owner’s Manuals
ITW Welding Products Italy S.r.l.
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.
ORIGINAL INSTRUCTIONS − PRINTED IN USA
 2012 Miller Electric Mfg. Co. 2012−01
Via Privata Iseo, 6/E
20098 San Giuliano
Milanese, Italy
Phone: 39 (0) 2982901
Fax: 39 (0) 298290-203
email: miller@itw−welding.it