Miller MATIC CHALLENGER 172 User manual

Brand: Miller

Model: MATIC CHALLENGER 172

Category: Welding System

Type: User manual

Millermatic Challenger 172

And M-10 Gun

Processes

Description

MIG (GMAW)

Flux Cored (FCAW)

Wire Feeder

OM-1318 187923F

March 2000

Visit our website at

www.MillerWelds.com

Miller Electric manufactures a full line

of welders and welding related equipment.

For information on other quality Miller

products, contact your local Miller distributor

to receive the latest full line catalog or

individual catalog sheets. To locate your nearest

distributor or service agency call 1-800-4-A-Miller,

or visit us at www.MillerWelds.com on the web.

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 is the first welding

equipment manufacturer in

the U.S.A. to be registered to

the ISO 9001 Quality System

Standard.

Working as hard as you do

– every power source from

Miller is backed by the most

hassle-free warranty in the

business.

From Miller to You

Miller offers a Technical

Manual which provides

more detailed service and

parts information for your

unit. To obtain a Technical

Manual, contact your local

distributor. Your distributor

can also supply you with

Welding Process Manuals

such as SMAW, GTAW,

GMAW, and GMAW-P.

The following terms are

used interchangeably

throughout this manual:

MIG = GMAW

TABLE OF CONTENTS

SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1. Symbol Usage 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2. Arc Welding Hazards 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3. Additional Symbols For Installation, Operation, And Maintenance 3. . . . . . . . . . . . . . . . . . . . . .

1-4. Principal Safety Standards 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5. EMF Information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION 5. . . . . . . . . . . . . . . . . . . . .

1-1. Signification des symboles 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2. Dangers relatifs au soudage à l’arc 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement

et la maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4. Principales normes de sécurité 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5. Information sur les champs électromagnétiques 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2 – SPECIFICATIONS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1. Specifications 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2. Volt-Ampere Curves 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3. Welding Power Source Duty Cycle And Overheating 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-4. Welding Gun Duty Cycle And Overheating 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 – INSTALLATION 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1. Installing Work Clamp 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2. Installing Welding Gun And Changing Polarity 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3. Installing Gas Supply 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4. Electrical Service Guide 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5. Selecting A Location And Connecting Input Power 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6. Installing Wire Spool And Adjusting Hub Tension 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7. Installing Drive Roll, Wire Guide And Threading Welding Wire 15. . . . . . . . . . . . . . . . . . . . . . . . .

3-8. Weld Parameter 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4 – OPERATION 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1. Controls 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5 – MAINTENANCE &TROUBLESHOOTING 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1. Routine Maintenance 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2. Drive Motor Fuse F1 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3. Short Circuit Shutdown 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4. Cleaning Or Repairing Drive Assembly 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5. Replacing Gun Contact Tip 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-6. Cleaning Or Replacing Gun Liner 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-7. Replacing Switch And/Or Head Tube 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8. Troubleshooting Table 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 6 – ELECTRICAL DIAGRAM 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 7 – MIG WELDING (GMAW) GUIDELINES 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-1. Typical MIG Process Connections 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-2. Typical MIG Process Control Settings 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-3. Holding And Positioning Welding Gun 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-4. Conditions That Affect Weld Bead Shape 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-5. Gun Movement During Welding 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-6. Poor Weld Bead Characteristics 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-7. Good Weld Bead Characteristics 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-8. Troubleshooting – Excessive Spatter 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-9. Troubleshooting – Porosity 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-10.Troubleshooting – Excessive Penetration 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-11.Troubleshooting – Lack Of Penetration 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-12.Troubleshooting – Incomplete Fusion 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-13.Troubleshooting – Burn-Through 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-14.Troubleshooting – Waviness Of Bead 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-15.Troubleshooting – Distortion 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7-16.Common MIG Shielding Gases 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 8 – PARTS LIST 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPTIONS AND ACCESSORIES

WARRANTY

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.)

OM-1318F

Page is loading ...

OM-1318 Page 1

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.

Y Marks a special safety message.

. Means “Note”; not safety related.

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.

1-2. Arc Welding Hazards

Y The symbols shown below are used throughout this manual to

call attention to and identify possible hazards. When you see

the symbol, watch out, and follow the related instructions to

avoid the hazard. The safety information given below is only

a summary of the more complete safety information found in

the Safety Standards listed in Section 1-4. Read and follow all

Safety Standards.

Y Only qualified persons should install, operate, maintain, and

repair this unit.

Y During operation, keep everybody, especially children, away.

ELECTRIC SHOCK can kill.

Touching live electrical parts can cause fatal shocks

or severe burns. The electrode and work circuit is

electrically live whenever the output is on. The input

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 Disconnect input power or stop engine before installing or

servicing this equipment. Lockout/tagout input power according to

OSHA 29 CFR 1910.147 (see Safety Standards).

D Properly install and ground this equipment according to its

Owner’s Manual and national, state, and local codes.

D Always verify the supply ground – check and be sure that input

power cord ground wire is properly connected to ground terminal in

disconnect box or that cord plug is connected to a properly

grounded receptacle outlet.

D When making input connections, attach proper grounding conduc-

tor first – double-check connections.

D Frequently inspect input power cord for damage or bare wiring –

replace cord immediately if damaged – bare wiring can kill.

D Turn off all equipment when not in use.

D Do not use worn, damaged, undersized, or poorly spliced cables.

D Do not drape cables over your body.

D If earth grounding of the workpiece is required, ground it directly

with a separate cable.

D Do not touch electrode if you are in contact with the work, ground,

or another electrode from a different machine.

D Use only well-maintained equipment. Repair or replace damaged

parts at once. Maintain unit according to manual.

D Wear a safety harness if working above floor level.

D Keep all panels and covers securely in place.

D Clamp work cable with good metal-to-metal contact to workpiece

or worktable as near the weld as practical.

D Insulate work clamp when not connected to workpiece to prevent

contact with any metal object.

D Do not connect more than one electrode or work cable to any

single weld output terminal.

SIGNIFICANT DC VOLTAGE exists after removal of

input power on inverters.

D Turn Off inverter, disconnect input power, and discharge input

capacitors according to instructions in Maintenance Section

before touching any parts.

Welding produces fumes and gases. Breathing

these fumes and gases can be hazardous to your

health.

FUMES AND GASES can be hazardous.

D Keep your head out of the fumes. Do not breathe the fumes.

D If inside, ventilate the area and/or use exhaust at the arc to remove

welding fumes and gases.

D If ventilation is poor, use an approved air-supplied respirator.

D Read the Material Safety Data Sheets (MSDSs) and the

manufacturer’s instructions for metals, consumables, coatings,

cleaners, and degreasers.

D Work in a confined space only if it is well ventilated, or while

wearing an air-supplied respirator. Always have a trained 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.

D Do not weld in locations near degreasing, cleaning, or spraying op-

erations. The heat and rays of the arc can react with vapors to form

highly toxic and irritating gases.

D Do not weld on coated metals, such as galvanized, lead, or

cadmium plated steel, unless the coating is removed from the weld

area, the area is well ventilated, and if necessary, while wearing an

air-supplied respirator. The coatings and any metals containing

these elements can give off toxic fumes if welded.

OM-1318 Page 2

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.

ARC RAYS can burn eyes and skin.

D Wear a welding helmet fitted with a proper shade of filter to protect

your face and eyes when welding or watching (see ANSI Z49.1

and Z87.1 listed in Safety Standards).

D Wear approved safety glasses with side shields under your

helmet.

D Use protective screens or barriers to protect others from flash and

glare; warn others not to watch the arc.

D Wear protective clothing made from durable, flame-resistant mate-

rial (leather and wool) and foot protection.

Welding 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.

WELDING can cause fire or explosion.

D Protect yourself and others from flying sparks and hot metal.

D Do not weld where flying sparks can strike flammable material.

D Remove all flammables within 35 ft (10.7 m) of the welding arc. If

this is not possible, tightly cover them with approved covers.

D Be alert that welding sparks and hot materials from welding can

easily go through small cracks and openings to adjacent areas.

D Watch for fire, and keep a fire extinguisher nearby.

D Be aware that welding on a ceiling, floor, bulkhead, or partition can

cause fire on the hidden side.

D Do not weld on closed containers such as tanks, drums, or pipes,

unless they are properly prepared according to AWS F4.1 (see

Safety Standards).

D Connect work cable to the work as close to the welding area as

practical to prevent welding current from traveling long, possibly

unknown paths and causing electric shock and fire hazards.

D Do not use welder to thaw frozen pipes.

D Remove stick electrode from holder or cut off welding wire at

contact tip when not in use.

D Wear oil-free protective garments such as leather gloves, heavy

shirt, cuffless trousers, high shoes, and a cap.

D Remove any combustibles, such as a butane lighter or matches,

from your person before doing any welding.

FLYING METAL can injure eyes.

D Welding, chipping, wire brushing, and grinding

cause sparks and flying metal. As welds cool,

they can throw off slag.

D Wear approved safety glasses with side

shields even under your welding helmet.

BUILDUP OF GAS can injure or kill.

D Shut off shielding gas supply when not in use.

D Always ventilate confined spaces or use

approved air-supplied respirator.

HOT PARTS can cause severe burns.

D Do not touch hot parts bare handed.

D Allow cooling period before working on gun or

torch.

MAGNETIC FIELDS can affect pacemakers.

D Pacemaker wearers keep away.

D Wearers should consult their doctor before

going near arc welding, gouging, or spot

welding operations.

NOISE can damage hearing.

Noise from some processes or equipment can

damage hearing.

D Wear approved ear protection if noise level is

high.

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.

CYLINDERS can explode if damaged.

D Protect compressed gas cylinders from excessive heat, mechani-

cal shocks, slag, open flames, sparks, and arcs.

D Install cylinders in an upright position by securing to a stationary

support or cylinder rack to prevent falling or tipping.

D Keep cylinders away from any welding or other electrical circuits.

D Never drape a welding torch over a gas cylinder.

D Never allow a welding electrode to touch any cylinder.

D Never weld on a pressurized cylinder – explosion will result.

D Use only correct shielding gas cylinders, regulators, hoses, and fit-

tings designed for the specific application; maintain them and

associated parts in good condition.

D Turn face away from valve outlet when opening cylinder valve.

D Keep protective cap in place over valve except when cylinder is in

use or connected for use.

D Read and follow instructions on compressed gas cylinders,

associated equipment, and CGA publication P-1 listed in Safety

Standards.

OM-1318 Page 3

1-3. Additional Symbols For Installation, Operation, And Maintenance

FIRE OR EXPLOSION hazard.

D Do not install or place unit on, over, or near

combustible surfaces.

D Do not install unit near flammables.

D Do not overload building wiring – be sure power supply system is

properly sized, rated, and protected to handle this unit.

FALLING UNIT can cause injury.

D Use lifting eye to lift unit only, NOT running

gear, gas cylinders, or any other accessories.

D Use equipment of adequate capacity to lift and

support unit.

D If using lift forks to move unit, be sure forks are

long enough to extend beyond opposite side of

unit.

OVERUSE can cause OVERHEATING

D Allow cooling period; follow rated duty cycle.

D Reduce current or reduce duty cycle before

starting to weld again.

D Do not block or filter airflow to unit.

STATIC (ESD) can damage PC boards.

D Put on grounded wrist strap BEFORE handling

boards or parts.

D Use proper static-proof bags and boxes to

store, move, or ship PC boards.

MOVING PARTS can cause injury.

D Keep away from moving parts.

D Keep away from pinch points such as drive

rolls.

WELDING WIRE can cause injury.

D Do not press gun trigger until instructed to do

so.

D Do not point gun toward any part of the body,

other people, or any metal when threading

welding wire.

MOVING PARTS can cause injury.

D Keep away from moving parts such as fans.

D Keep all doors, panels, covers, and guards

closed and securely in place.

H.F. RADIATION can cause interference.

D High-frequency (H.F.) can interfere with radio

navigation, safety services, computers, and

communications equipment.

D Have only qualified persons familiar with

electronic equipment perform this installation.

D The user is responsible for having a qualified electrician prompt-

ly correct any interference problem resulting from the installa-

tion.

D If notified by the FCC about interference, stop using the

equipment at once.

D Have the installation regularly checked and maintained.

D Keep high-frequency source doors and panels tightly shut, keep

spark gaps at correct setting, and use grounding and shielding to

minimize the possibility of interference.

ARC WELDING can cause interference.

D Electromagnetic energy can interfere with

sensitive electronic equipment such as

computers and computer-driven equipment

such as robots.

D Be sure all equipment in the welding area is

electromagnetically compatible.

D To reduce possible interference, keep weld cables as short as

possible, close together, and down low, such as on the floor.

D Locate welding operation 100 meters from any sensitive elec-

tronic equipment.

D Be sure this welding machine is installed and grounded

according to this manual.

D If interference still occurs, the user must take extra measures

such as moving the welding machine, using shielded cables,

using line filters, or shielding the work area.

1-4. Principal Safety Standards

Safety in Welding and Cutting, ANSI Standard Z49.1, from American

Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126

Safety and Health Standards, OSHA 29 CFR 1910, from Superinten-

dent of Documents, U.S. Government Printing Office, Washington, D.C.

20402.

Recommended Safe Practices for the Preparation for Welding and 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

National Electrical Code, NFPA Standard 70, from National Fire Protec-

tion Association, Batterymarch Park, Quincy, MA 02269.

Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,

from Compressed Gas Association, 1235 Jefferson Davis Highway,

Suite 501, Arlington, VA 22202.

Code for Safety in Welding and Cutting, CSA Standard W117.2, from

Canadian Standards Association, Standards Sales, 178 Rexdale

Boulevard, Rexdale, Ontario, Canada M9W 1R3.

Safe Practices For Occupation And Educational Eye And Face

Protection, ANSI Standard Z87.1, from American National Standards

Institute, 1430 Broadway, New York, NY 10018.

Cutting And Welding Processes, NFPA Standard 51B, from National

Fire Protection Association, Batterymarch Park, Quincy, MA 02269.

OM-1318 Page 4

1-5. EMF Information

Considerations About Welding And The Effects Of Low Frequency

Electric And Magnetic Fields

Welding current, as it flows through welding cables, will cause electro-

magnetic fields. There has been and still is some concern about such

fields. However, after examining more than 500 studies spanning 17

years of research, a special blue ribbon committee of the National

Research Council concluded that: “The body of evidence, in the

committee’s judgment, has not demonstrated that exposure to power-

frequency electric and magnetic fields is a human-health hazard.”

However, studies are still going forth and evidence continues to be

examined. Until the final conclusions of the research are reached, you

may wish to minimize your exposure to electromagnetic fields when

welding or cutting.

To reduce magnetic fields in the workplace, use the following

procedures:

1. Keep cables close together by twisting or taping them.

2. Arrange cables to one side and away from the operator.

3. Do not coil or drape cables around your body.

4. Keep welding power source and cables as far away from opera-

tor as practical.

5. Connect work clamp to workpiece as close to the weld as possi-

ble.

About Pacemakers:

Pacemaker wearers consult your doctor first. If cleared by your doctor,

then following the above procedures is recommended.

Page is loading ...

OM-1318 Page 8

1-4. Principales normes de sécurité

Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel-

ding Society, 550 N.W. Lejeune Rd, Miami FL 33126

Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent

of Documents, U.S. Government Printing Office, Washington, D.C.

20402.

Recommended Safe Practice for the Preparation for Welding and Cut-

ting of Containers That Have Held Hazardous Substances, norme AWS

F4.1, de l’American Welding Society, 550 N.W. Lejeune Rd, Miami FL

33126

National Electrical Code, NFPA Standard 70, de la National Fire Protec-

tion Association, Batterymarch Park, Quincy, MA 02269.

Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,

de la Compressed Gas Association, 1235 Jefferson Davis Highway,

Suite 501, Arlington, VA 22202.

Règles de sécurité en soudage, coupage et procédés connexes, norme

CSA W117.2, de l’Association canadienne de normalisation, vente de

normes, 178 Rexdale Boulevard, Rexdale (Ontario) Canada M9W 1R3.

Safe Practices For Occupation And Educational Eye And Face Protec-

tion, norme ANSI Z87.1, de l’American National Standards Institute,

1430 Broadway, New York, NY 10018.

Cutting and Welding Processes, norme NFPA 51B, de la National Fire

Protection Association, Batterymarch Park, Quincy, MA 02269.

1-5. Information sur les champs électromagnétiques

Données sur le soudage électrique et sur les effets, pour l’organisme,

des champs magnétiques basse fréquence

Le courant de soudage, pendant son passage dans les câbles de sou-

dage, causera des champs électromagnétiques. Il y a eu et il y a encore

un certain souci à propos de tels champs. Cependant, après avoir ex-

aminé plus de 500 études qui ont été faites pendant une période de

recherche de 17 ans, un comité spécial ruban bleu du National Re-

search Council a conclu: “L’accumulation de preuves, suivant le

jugement du comité, n’a pas démontré que l’exposition aux champs

magnétiques et champs électriques à haute fréquence représente un

risque à la santé humaine”. Toutefois, des études sont toujours en cours

et les preuves continuent à être examinées. En attendant que les con-

clusions finales de la recherche soient établies, il vous serait

souhaitable de réduire votre exposition aux champs électromagnéti-

ques pendant le soudage ou le coupage.

Afin de réduire les champs électromagnétiques dans l’environnement

de travail, respecter les consignes suivantes :

1 Garder les câbles ensembles en les torsadant ou en les

attachant avec du ruban adhésif.

2 Mettre tous les câbles du côté opposé de l’opérateur.

3 Ne pas courber pas et ne pas entourer pas les câbles autour de

votre corps.

4 Garder le poste de soudage et les câbles le plus loin possible de

vous.

5 Relier la pince de masse le plus près possible de la zone de

soudure.

Consignes relatives aux stimulateurs cardiaques :

Les personnes qui portent un stimulateur cardiaque doivent avant tout

consulter leur docteur. Si vous êtes déclaré apte par votre docteur, il est

alors recommandé de respecter les consignes ci–dessus.

OM-1318 Page 9

SECTION 2 – SPECIFICATIONS

2-1. Specifications

Rated Welding

Output

Amperage

Range

Maximum Open-

Circuit Voltage

Amperes Input at

Rated Load Output

230 V, 60 Hz,

Single-Phase

KVA KW

Weight

W/ Gun

Overall

Dimensions

130 A @ 20 Volts

DC, 30% Duty Cycle

40 – 170

30 19.4 (0.28)*

4.49

0.86*

3.83

0.043*

80 lb

(36 kg)

Length: 17 in

(432 mm)

Width: 10 in

(254 mm)

Height: 15-1/2 in

(394 mm)

Wire Type

And Dia

Solid/

Stainless

Flux Cored Aluminum Wire Feed Speed Range At No Load

.023 – .035 in

(0.6 – 0.9 mm)

.030 – .045 in

(0.8 – 1.2 mm)

.030 – .035 in

(0.8 – 0.9 mm)

220 – 700 IPM (5.6 – 18 m/min)

* While idling

2-2. Volt-Ampere Curves

The volt-ampere curves show the

minimum and maximum voltage

and amperage output capabilities of

the welding power source. Curves

of other settings fall between the

curves shown.

ssb1.1 10/91 – SB-187 997

OM-1318 Page 10

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

duty cycle before welding.

Y Exceeding duty cycle can

damage unit or gun and void

warranty.

30% Duty Cycle At 130 Amperes

Overheating

A or V

Reduce Duty Cycle

Minutes

duty1 4/95 – SB-180 844

300

250

200

150

100

10 15 20 25 30 40 50 60 70 80 100

DC AMPERES

% DUTY CYCLE

3 Minutes Welding 7 Minutes Resting

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

Duty Cycle is percentage of 10

minutes that gun can weld at

rated load without overheating.

Continuous Welding

SB1.1 8/93

Minutes

Definition .023 To .045 in (0.6 To 1.1 mm)

Hard Or Flux Cored Wires

100% Duty Cycle At 100 Amperes

Using CO

.023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires

60% Duty Cycle At 100 Amperes

Using Mixed Gases

6 Minutes Welding 4 Minutes Resting

OM-1318 Page 11

SECTION 3 – INSTALLATION

3-1. Installing Work Clamp

1 Insulator

2 Bolt

3 Smaller Hole

4 Work Clamp Tabs

Bend tabs around work cable.

5 Work Cable From Unit

6 Nut

Ref. ST-025 190-D

Tools Needed:

3/8, 7/16 in

3-2. Installing Welding Gun And Changing Polarity

1 Drive Assembly

2 Gun Securing Bolt

3 Gun End

Loosen securing bolt. Insert gun

end through opening until it bottoms

against drive assembly. Tighten

bolt.

4 Gun Trigger Plug

Insert plug into receptacle, and

tighten threaded collar.

5 Jumper Links

Place jumper links in position

shown for desired polarity.

Close door.

Tools Needed:

Ref. ST-801 987

5/16 in

Straight Polarity

DCEN

Reverse Polarity

DCEP

Flux Cored Wires

(FCAW–Without Gas)

Solid Steel Or

Aluminum Wires

(GMAW–With Gas)

. Follow wire manufacturer’s recommendation.

OM-1318 Page 12

3-3. 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 Cap

2 Cylinder Valve

Remove cap, stand to side of valve,

and open valve slightly. Gas flow

blows dust and dirt from valve.

Close valve.

3 Cylinder

4 Regulator/Flowmeter

Install so face is vertical.

5 Gas Hose Connection

Fitting has 5/8-18 right-hand

threads.

6 Gas Fitting

Install gas hose between gas hose

connction on regulator/flowmeter

and gas fitting on rear of welding

power source.

7 Flow Adjust

Typical flow rate is 20 cfh (cubic feet

per hour). Check wire manufactur-

er’s recommended flow rate.

8CO

Adapter

9 O-Ring

Install adapter with O-ring between

regulator/flowmeter and CO

cylinder.

Tools Needed:

Gas

8 9

Argon Gas

ssb3.1* 12/92 – ST-158 697-A / ST-801 986

5/8, 1-1/8 in

OM-1318 Page 13

3-4. Electrical Service Guide

Input Voltage 230

Input Amperes At Rated Output 20

Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes

Circuit Breaker

, Time-Delay

Normal Operating

Min Input Conductor Size In AWG/Kcmil 14

Max Recommended Input Conductor Length In Feet (Meters)

(20)

Min Grounding Conductor Size In AWG/Kcmil 14

Reference: 1999 National Electrical Code (NEC)

1 Choose a circuit breaker with time-current curves comparable to a Time Delay Fuse.

2 “Time-Delay” fuses are UL class “RK5” .

3 “Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and

above).

Y Caution: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard.

3-5. Selecting A Location And Connecting Input Power

1 Rating Label

Supply correct input power.

2 Plug

3 Receptacle

Connect plug to receptacle.

4 Line Disconnect Device

See Section 3-4.

Y Special installation may be

required where gasoline or

volatile liquids are present –

see NEC Article 511 or CEC

Section 20.

ssb2.2* 1/94 – ST-801 988 / 802 401

18 in (457 mm) of

space for airflow

230 VAC, 1

Y Always connect

grounding

conductor first.

= GND/PE

Y Do not move or operate unit

where it could tip.

OM-1318 Page 14

3-6. Installing Wire Spool And Adjusting Hub Tension

S-0499

15/16 in

Standard Wire Spool

1 Lb Wire Spool

When a slight force is needed

to turn spool, tension is set.

Tools Needed:

Standard Wire Reel

Part No. 183 312

Part No. 135 615

OM-1318 Page 15

3-7. Installing Drive Roll, Wire Guide And Threading Welding Wire

1 Drive roll

Choose correct drive roll for wire

type, and align drive roll with flat

spot on shaft. Slide drive roll onto

shaft and secure with screw.

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.

Tools Needed:

WOOD

6 in

(150 mm)

Pull and hold wire; cut off end.

4 in

(102 mm)

Open pressure assembly.

Push wire thru guides into gun;

continue to hold wire.

Close and tighten pressure

assembly, and let go of wire.

Remove gun nozzle and contact tip.

Turn power on.

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 door.

Ref. ST-801 987 / Ref. ST-801 872 / Ref. 802 399-A / S-0627-A

OM-1318 Page 16

3-8. Weld Parameter

Material Thickness

Wire Type,

Shielding Gas,

And Flow Rate

Wire

Diameter

(inch)

Operator

Controls

1/4 in

(6.4

mm)

3/16 in

(4.8

mm)

1/8 in

(3.2

mm)

14 ga 16 ga 18 ga 20 ga 22 ga

Voltage Tap* –– –– 3 3 2 2 1 1

.023

Wire Speed –– –– 65 60 55 50 50 40

E70S-6

Voltage Tap* 4 3 3 3 2 2 1 1

20 cfh+

.030

Wire Speed 60 55 50 40 35 30 25 20

Voltage Tap* 4 3 3 2 2 2 –– ––

.035

Wire Speed 50 50 50 45 40 30 –– ––

Voltage Tap* –– –– 3 3 2 2 1 1

.023

Wire Speed –– –– 80 70 60 55 50 40

E70S-6

75% Argon

Voltage Tap* 4 4 3 3 2 2 1 1

75% Argon

25% CO

20 cfh+

.030

Wire Speed 75 70 60 55 50 40 35 30

20 cfh+

Voltage Tap* 4 3 3 2 2 2 1 ––

.035

Wire Speed 55 55 50 45 40 35 25 ––

Voltage Tap* 4 4 3 3 2 2 –– ––

.030

Wire Speed 70 60 50 40 40 35 –– – –

E71T-GS

Voltage Tap* 4 4 3 2 1 –– –– ––

E71T-GS

Flux Core

.035

Wire Speed 60 50 40 40 40 –– –– – –

Voltage Tap* 4 4 3 –– –– –– –– ––

.045

Wire Speed 50 45 40 –– –– –– –– ––

Voltage Tap* –– 4 3 3 3 2 2 ––

.023

Wire Speed –– 100 90 80 75 35 30 ––

ER 308

Stainless Steel

Voltage Tap* 4 3 3 2 4 2 –– ––

Stainless Steel

Tri-Mix

20 cfh+

.030

Wire Speed 80 70 65 60 50 40 –– ––

20 cfh+

Voltage Tap* 4 3 3 –– –– –– –– ––

.035

Wire Speed 75 68 60 –– –– –– –– ––

Voltage Tap* –– 4 3 2 1 –– –– ––

Aluminum 5356

.030**

Wire Speed –– 100 100 100 100 –– –– ––

100% Argon

20 cfh Voltage Tap* –– 4 3 –– –– –– –– ––

.035**

Wire Speed –– 100 100 –– –– –– –– ––

*Do not change Voltage switch position while welding. Wire Speed value in Table is a starting value only, and Wire Speed control setting can be fine

tuned during welding.

** When welding aluminum, for best results, use .023–.035 v-knurled drive roll and a contact tip one size larger than wire diameter... Ref. S-187 939

OM-1318 Page 17

SECTION 4 – OPERATION

4-1. Controls

1 Wire Speed Control

Use control to select a wire feed

speed. As Voltage switch setting in-

creases, wire speed range also in-

creases (see weld setting label in

welding power source).

Ref. ST-187 921

2 Voltage Switch

. Switch must “click” into detent

position 1, 2, 3, or 4 for proper

contact.

The higher the selected number,

the thicker the material that can be

welded (see weld setting label in

welding power source). Do not

switch under load.

3 Voltage Switch - Fan Only

Position

In Fan Only position, fan runs but

there is no weld output.

4 Power Switch

OM-1318 Page 18

SECTION 5 – MAINTENANCE &TROUBLESHOOTING

5-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace

unreadable

labels.

Repair or

replace

cracked

weld cable.

Clean and

tighten weld

terminals.

6 Months

Blow out or

vacuum inside.

during heavy

service, clean

monthly.

Remove drive roll

and apply light coat

of oil or grease to

drive motor shaft.

5-2. Drive Motor Fuse F1

Y Turn Off power, unlatch door

and remove wrapper.

1 Circuit Board PC1

2 Fuse F1 (See Parts List For

Rating)

If drive motor is inoperative, pull

fuse from fuse holder on PC1. Re-

place fuse if necessary. To reinstall,

push fuse into fuse holder.

Reinstall wrapper, and latch door.

ST-801 867

3/8 in

Tools Needed:

5-3. Short Circuit Shutdown

If contact tip is shorted and sticks to workpiece, the unit shuts down, but fan runs. To resume operation, release gun

trigger, turn Off unit, and remove contact tip from workpiece. Check contact tip and replace if damaged. Turn On unit to

continue operation.

OM-1318 Page 19

5-4. Cleaning Or Repairing Drive Assembly

Y Turn Off power before

cleaning or repairing drive

assembly.

1 Wire Spool

2 Nozzle

Cut welding wire off at nozzle. Re-

tract wire onto spool and secure.

3 Pressure Roll Arm

4 Cotter Pin

5 Pin

6 Screw

7 Bearing

Remove bearing. Install new bear-

ing and secure with screw. Reinstall

arm onto pin and secure with cotter

pin.

8 Screw

9 Drive Roll

Remove drive roll.

Align drive roll with flat spot on

shaft. Slide drive roll onto shaft and

secure with screw.

10 Wire Inlet 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.

Close door.

Ref. ST-801 987 / Ref. ST-801 872

Tools Needed:

5/64 in

5-5. Replacing Gun Contact Tip

Ref. 802 399-A

Y Turn Off power before

replacing contact tip.

1 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:

OM-1318 Page 20

5-6. Cleaning Or Replacing Gun Liner

Ref. ST-802 399-A

3/8 in

Y Disconnect gun from unit.

Tools Needed:

To Reassemble Gun:

Insert new liner.

Install wire outlet guide so that 1/8

in (3 mm) of liner sticks out. Hand

tighten outlet guide, and then tight-

en two full turns more.

Cut liner off so that 3/4 in (19 mm)

sticks out of head tube.

Install gas diffuser, adapter, contact

tip, and nozzle.

Lay gun cable out straight

before installing new liner.

Head Tube

1/2 in

Remove liner.

Remove nozzle, contact tip,

adapter, gas diffuser, and wire

outlet guide.

Blow out gun casing.

Page is loading ...

Miller MATIC CHALLENGER 172 User manual

Brand: Miller

Model: MATIC CHALLENGER 172

Category: Welding System

Type: User manual

Download PDF

report

in other languages

français: Miller MATIC CHALLENGER 172 Manuel utilisateur

Miller MATIC CHALLENGER 172 User manual

Miller MATIC CHALLENGER 172 User manual

in other languages

Related papers

Other documents