Miller Electric 225 User manual

Brand: Miller Electric

Model: 225

Category: Power supply units

Type: User manual

This manual is also suitable for

AC/DC, 300/200 AC/DC, 225, And 300

Processes

Description

Arc Welding Power Source

OM-316 087 083Q

August 2004

Thunderbolt XL

Stick (SMAW) Welding

225 And 300 Models:

AC/DC, 300/200 AC/DC Models:

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 the

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 9001:2000 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

Mil_Thank 7/03

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. California Proposition 65 Warnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5. Principal Safety Standards 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-6. EMF Information 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 2 − CONSIGNES DE SÉCURITÉ − À LIRE AVANT UTILISATION 5 . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1. Signification des symboles 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

2-3. Autres symboles relatifs à l’installation, au fonctionnement et à l’entretien de l’appareil. 7 . . . . . . . . . . .

2-4. Principales normes de sécurité 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5. Information sur les champs électromagnétiques 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 3 − DEFINITIONS 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-1. Symbols And Definitions 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2. Manufacturer’s Rating Labels 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4 − INSTALLATION 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1. Specifications 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2. Duty Cycle Charts 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-3. Volt-Ampere Curves 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-4. Selecting A Location 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-5. Installing Electrode Holder And Work Clamp 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6. Weld Output Cables 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-7. Electrical Service Guide 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-8. Internal Connections For Operating 115/230 Volts, 225 Amperes AC And AC/DC Models From 115

Volts 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-9. Internal Connections For Operating 230/400 Volts, 300/200 Amperes AC/DC Or 300 Amperes AC Mod-

els From 230 Volts 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-10. Connecting Input Power 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 5 − OPERATION 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1. Controls 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 6 − MAINTENANCE & TROUBLESHOOTING 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-1. Routine Maintenance 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-2. Lubricating Shunt Block And Anti-Noise Adjustment 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-3. Reinstalling Amperage Adjustment Indicator 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4. Troubleshooting 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 7 − ELECTRICAL DIAGRAMS 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 8 − WELDING METHODS & TROUBLESHOOTING 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-1. Shielded Metal Arc Welding (SMAW) Procedure 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-2. Electrode And Amperage Selection Chart 31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-3. Striking An Arc 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-4. Positioning The Electrode Holder 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-5. Weld Bead Characteristics 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-6. Conditions That Affect Weld Bead Shape 33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-7. Electrode Movement During Welding 34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-8. Butt Joints 34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-9. Lap Joints 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8-10. Tee Joints 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 9 − PARTS LIST 38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPTIONS AND ACCESSORIES

WARRANTY

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OM-316 Page 1

SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING

som _8/03

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 1-5. 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-316 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-316 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. California Proposition 65 Warnings

Y 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.)

Y Battery posts, terminals and related accessories contain lead

and lead compounds, chemicals known to the State of

California to cause cancer and birth defects or other

reproductive harm. Wash hands after handling.

For Gasoline Engines:

Y Engine exhaust contains chemicals known to the State of

California to cause cancer, birth defects, or other reproductive

harm.

For Diesel Engines:

Y Diesel engine exhaust and some of its constituents are known

to the State of California to cause cancer, birth defects, and

other reproductive harm.

OM-316 Page 4

1-5. Principal Safety Standards

Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1,

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

(phone: 305-443-9353, website: www.aws.org).

Recommended Safe Practices for the Preparation for Welding and Cut-

ting of Containers and Piping, American Welding Society Standard

AWS F4.1, from American Welding Society, 550 N.W. LeJeune Rd, Mi-

ami, FL 33126 (phone: 305-443-9353, website: www.aws.org).

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

tion Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA

02269−9101 (phone: 617−770−3000, website: www.nfpa.org and www.

sparky.org).

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

from Compressed Gas Association, 1735 Jefferson Davis Highway,

Suite 1004, Arlington, VA 22202−4102 (phone: 703−412−0900, web-

site: www.cganet.com).

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 (phone:

800−463−6727 or in Toronto 416−747−4044, website: www.csa−in-

ternational.org).

Practice For Occupational And Educational Eye And Face Protection,

ANSI Standard Z87.1, from American National Standards Institute, 11

West 42nd Street, New York, NY 10036−8002 (phone: 212−642−4900,

website: www.ansi.org).

Standard for Fire Prevention During Welding, Cutting, and Other Hot

Work, NFPA Standard 51B, from National Fire Protection Association,

P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (phone:

617−770−3000, website: www.nfpa.org and www. sparky.org).

OSHA, Occupational Safety and Health Standards for General Indus-

try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,

and Part 1926, Subpart J, from U.S. Government Printing Office, Super-

intendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (there

are 10 Regional Offices−−phone for Region 5, Chicago, is

312−353−2220, website: www.osha.gov).

1-6. 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-316 Page 8

2-4. Principales normes de sécurité

Safety in Welding, Cutting, and Allied Processes, norme ANSI Z49.1,

de l’American Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126

(téléphone : (305) 443−9353, site Web : www.aws.org).

Recommended Safe Practices for the Preparation for Welding and Cut-

ting of Containers and Piping, norme American Welding Society AWS

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

33126 (téléphone : (305) 443−9353, site Web : www.aws.org).

National Electrical Code, norme NFPA 70, de la National Fire Protection

Association, P.O. Box 9101, 1 Battery March Park, Quincy, MA

02269−9101 (téléphone : (617) 770−3000, sites Web : www.nfpa.org et

www.sparky.org).

Safe Handling of Compressed Gases in Cylinders, brochure CGA P−1,

de la Compressed Gas Association, 1735 Jefferson Davis Highway,

Suite 1004, Arlington, VA 22202−4102 (téléphone : (703) 412−0900,

site Web : www.cganet.com).

Code for Safety in Welding and Cutting, norme CSA W117.2, de la Ca-

nadian Standards Association, Standards Sales, 178 boulevard

Rexdale, Rexdale (Ontario) Canada M9W 1R3 (téléphone : (800)

463−6727 ou à Toronto : (416) 747−4044, site Web : www.csa−interna-

tional.org).

Practice For Occupational And Educational Eye And Face Protection,

norme ANSI Z87.1, de l’American National Standards Institute, 11 West

42nd Street, New York, NY 10036−8002 (téléphone : (212) 642−4900,

site Web : www.ansi.org).

Standard for Fire Prevention During Welding, Cutting, and Other Hot

Work, norme NFPA 51B, de la National Fire Protection Association,

P.O. Box 9101, 1 Battery March Park, Quincy, MA 02269−9101 (télé-

phone : (617) 770−3000, site Web : www.nfpa.org et www.sparky.org).

OSHA, Occupational Safety and Health Standards for General Indus-

try, Title 29, Code of Federal Regulations (CFR), Part 1910, Subpart Q,

and Part 1926, Subpart J, de l’U.S. Government Printing Office, Super-

intendent of Documents, P.O. Box 371954, Pittsburgh, PA 15250 (il y a

10 bureaux régionaux − Téléphone pour la Région 5, Chicago : (312)

353−2220, site Web : www.osha.gov).

2-5. Information sur les champs électromagnétiques

Données sur le soudage électrique et les effets des champs magnéti-

ques basse fréquence sur l’organisme

En parcourant les câbles de soudage, le courant crée des champs élec-

tromagnétiques. Les effets potentiels de tels champs restent

préoccupants. Cependant, après avoir examiné plus de 500 études qui

ont été faites pendant une période de recherche de 17 ans, un comité

de spécialistes du National Research Council a conclu : « L’accumula-

tion de preuves n’a pas démontré que l’exposition aux champs

magnétiques et aux champs électriques à haute fréquence constitue un

risque pour la santé humaine ». Toutefois, les études et l’examen des

preuves se poursuivent. En attendant les conclusions finales de la re-

cherche, il serait souhaitable de réduire l’exposition aux champs

électromagnétiques pendant le soudage ou le coupage.

Afin de réduire les champs électromagnétiques en milieu de travail, res-

pecter les consignes suivantes :

1. Garder les câbles ensemble en les torsadant ou en les fixant avec du

ruban adhésif.

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

3. Ne pas s’enrouler les câbles autour du corps.

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

5. Placer la pince de masse le plus près possible de la zone de soudage.

Consignes relatives aux stimulateurs cardiaques :

Les personnes qui portent un stimulateur cardiaque doivent avant tout

consulter leur médecin. Si ce dernier les déclare aptes, il leur est recom-

mandé de respecter les consignes ci-dessus.

OM-316 Page 9

SECTION 3 − DEFINITIONS

3-1. Symbols And Definitions

Amperes Single Phase

Do Not Switch

Under Load

Input

On Off Output

Hertz

Alternating

Current

Electrode Positive Electrode Negative Direct Current

Welding Arc

Volts Work Electrode

3-2. Manufacturer’s Rating Labels

217 652-A / 165 371-A

Rating Label For EN/FR Machines

Rating Label For All Other Machines

INPUT

VOLTS

AMPERES

PHASE HERTZ

SERIALNO.

STOCK NO.

EVIDENCEOFLABELTAMPERINGVOIDSWARRANTY

LR5071

EVIDENCE OF LABEL TAMPERING VOIDS WARRANTY

TOUTE ALTÉRATION DE L’ÉTIQUETTE ANNULLE LA GARANTIE

OM-316 Page 10

SECTION 4 − INSTALLATION

4-1. Specifications

AC/DC Models

Mode

Rated Welding

Output

Amperage

Range

Maximum

Open-

Circuit

Amperes Input at Rated Load Output

50 Or 60 Hz, Single-Phase

Wei

Mode

Output Range

rcu

Voltage

115 V 220 V 230 V 400 V 460 V

Weight

225 A @ 25 Volts AC,

20% Duty Cycle @ 60 Hz;

15% Duty Cycle @ 50 Hz

Low: 30 − 150

High: 40 − 235

80 VAC

47 5

23 7

104 lb

150 A @ 25 Volts DC,

20% Duty Cycle @ 60 Hz;

15% Duty Cycle @ 50 Hz

30 − 160 80 VDC

4.6*

47.5

2.3*

23.7

1.2*

104 lb

(47 kg)

300 A @30 Volts AC,

20% Duty Cycle @ 50/60 Hz

Low: 40 − 200

High: 65 − 300

80 VAC

134 lbs

200 A @ 25 Volts DC,

20% Duty Cycle @ 50/60 Hz

30 − 200 80 VDC

5.4*

3.6*

1.8*

1.3*

134 lbs

(61 kg)

Overall Dimensions

Height: 18-3/4 in (476 mm); Width: 12-3/4 in (323 mm); Depth: 17-1/2 in (445 mm)

*While idling

AC Models

Rated Weldin

Output

Amperage

Range

Max Open-

Circuit

Amperes Input at Rated Load

Output 50 Or 60 Hz, Single-Phase

Wei

Rated Welding Output

Range

Circuit

Voltage

115 V 220 V 230 V 400 V KW

Weight

225 A @ 25 Volts AC, 20%

Duty Cycle @ 60 Hz;

15% Duty Cycle @ 50 Hz

Low: 30 − 150A

High: 40 − 235A

80 VAC

4.6*

47.5

2.3*

7.2

0.22*

85 lb

(39 kg)

300 A @ 30 Volts AC,

20% Duty Cycle @ 50/60 Hz

Low: 40 − 200

High: 65 − 300

80 VAC

5.4*

3.6*

1.8*

11.5

0.22*

107 lb

(49 kg)

Overall Dimensions

Height: 18-3/4 in (476 mm); Width: 12-3/4 in (323 mm); Depth: 17-1/2 in (445 mm)

*While idling

OM-316 Page 11

4-2. Duty Cycle Charts

A. For AC/DC Models

2 Minutes Welding 8 Minutes Resting

086 727 / 099 602-A

Duty Cycle is percentage of 10 minutes

that unit can weld at rated load without

overheating.

Y 20% Duty Cycle at 225 Amperes. Ex-

ceeding duty cycle can damage unit

and void warranty.

B. For 220, 230/400, And 460 Volt Models

(300/200 Amperes)

A. For 115/230, 230, And 460 Volt Models

(225/150 Amperes*)

*These models have a 15% duty cycle when used with 50 Hz input power.

2 Minutes Welding 8 Minutes Resting

B. For AC Models

001 836-A / 099 603-A

Duty Cycle is percentage of 10 minutes

that unit can weld at rated load without

overheating.

Y 20% Duty Cycle at 225 Amperes. Ex-

ceeding duty cycle can damage unit

and void warranty.

B. For 220, And 230/400 Volt Models

(300 Amperes)

A. For 115/230 And 230 Volt Models

(225 Amperes*)

*These models have a 15% duty cycle when used with 50 Hz input power.

OM-316 Page 12

4-3. Volt-Ampere Curves

A. For AC/DC Models

193 509 / 193 510 / 193 511 / 193 512

The volt-ampere curves show the

minimum and maximum voltage

and amperage output capabilities.

Curves of other settings fall be-

tween the curves shown.

A. For 115/230, 230 And 460 Volt Models

(225/150 Amperes)

B. For 220, 230/400, And 460 Volt Models

(300/200 Amperes)

100

0 100 200 300 400

DC Amperes

DC Volts

MIN

MAX

100

0 50 100 150 200 250 300 350 400 450

AC Amperes

A=LOW RANGE

B=HIGH RANGE

0 50 100 150 200 250

DC Amperes

DC Volts

0 50 100 150 200 250 300 350

AC Amperes

AC Volts

OM-316 Page 13

B. For AC Models

193 508 / 193 513 / 193 511

The volt-ampere curves show the

minimum and maximum voltage

and amperage output capabilities.

Curves of other settings fall be-

tween the curves shown.

A. For 115/230 And 230 Volt Models

(225 Amperes)

B. For 220 Volt Model

(300 Amperes)

C. For 230/400 Volt Model

(300 Amperes)

0 100 200 300 400 500

AC Amperes

AC Volts

100

0 50 100 150 200 250 300 350 400 450

AC Amperes

AC Volts

A=LOW RANGE

B=HIGH RANGE

0 50 100 150 200 250 300

AC Amperes

AC Volts

A=LOW RANGE

B=HIGH RANGE

OM-316 Page 14

4-4. Selecting A Location

217 652-A / 802 105

1 Rating Label (See Section

3-2)

Locate unit near correct input

power.

Y Special installation may be

required where gasoline or

volatile liquids are present −

see NEC Article 511 or CEC

Section 20.

18 in (457 mm) for airflow

LR5071

EVIDENCE OF LABEL TAMPERING VOIDS WARRANTY

TOUTE ALTÉRATION DE L’ÉTIQUETTE ANNULLE LA GARANTIE

OM-316 Page 15

4-5. Installing Electrode Holder And Work Clamp

802 251 / 802 105-C

Y Turn Off unit and disconnect

input power before installing

electrode holder or work

clamp.

Removing Barrel From Elec-

trode Holder

1 Electrode Holder

2 Barrel

3 Access Hole

4 Set Screw

Loosen set screw through access

hole and slide barrel away from

electrode holder.

Installing Electrode Cable and

Barrel onto Electrode Holder

5 Electrode Cable From Unit

(Has Bare Conductors on

End)

6 Terminal Screw

Back out terminal screw from elec-

trode holder. Insert electrode cable

through barrel into end of electrode

holder and tighten terminal screw

securely.

Move barrel toward electrode hold-

er and tighten set screw to secure

barrel in place.

Installing Work Cable onto Work

Clamp

7 Work Clamp

8 Work Cable From Unit (Has

Ring Terminal on End)

9 Mounting Bolt

Route work cable through work

clamp as shown and install onto

mounting bolt using supplied hard-

ware.

1/4 in

Tools Needed:

1/2 in

4-6. Weld Output Cables

For weld output cable replacements or extensions, contact your Factory

Authorized Service Agent.

NOTE

OM-316 Page 16

4-7. Electrical Service Guide

Input Voltage

115 220 230 400 460

Input Amperes At Rated Output

95 [70]

47.5

[67]

[39]

23.7

[34]

Max Recommended Standard Fuse Or Circuit Breaker Rating

In Amperes

150 [110]

[100]

[60]

[50]

Min Input Conductor Size In AWG/Kcmil

8 [8]

[10]

[14]

Max Recommended Input Conductor Length In Feet (Meters)

32 (10) [75 (23)]

87 (26)

[82 (25)]

[101

(31)]

138 (42)

[87 (27)]

Min Grounding Conductor Size In AWG/Kcmil

8 [8] 12 [10] [14]

[14]

[ ] Electrical Service Requirements For 300/200 AC/DC And 300 AC Models

Reference: 1997 National Electrical Code (NEC) Ref. S-0092-J

OM-316 Page 17

4-8. Internal Connections For Operating 115/230 Volts, 225 Amperes AC And AC/DC

Models From 115 Volts

Follow applicable electrical codes and have a competent electrician make internal

connections. Note the input amperes as stated in Section 4-7.

NOTE

Y Turn Off unit and disconnect input

power.

1 Wrapper

Remove wrapper.

2 Jumper Leads

Cut tie wrap securing jumper leads to power

cord lead and remove jumper leads.

3 Lead 2

4 Lead 3

Remove insulated sleeving, and disconnect

lead 2 from lead 3.

5 Lead 4

6 Power Switch S1 (As Viewed From

Rear Of Switch)

Disconnect lead 4 from terminal 2 on S1.

Connect lead 3 and one end of jumper lead to

terminal 2.

Connect other end of jumper lead to terminal

4 on S1. Be sure existing connection to that

terminal remains.

7 230 V Input Power Cord Black Leads

8 Green Ground Lead (On Rear Panel)

Disconnect input power cord black leads from

S1, and disconnect green ground lead from

ground terminal on rear panel.

9 Input Power Cord Strain Relief

Loosen strain relief, and remove 230 volt in-

put power cord.

Obtain correct size and length 115 volt input

power cord (see Section 4-7). Install correct

size ring terminals to cord leads.

Route cord through strain relief, and connect

green lead to ground terminal.

. To install large power cords, remove

knock-out located on lower rear panel of

unit, insert power cord, and install plug

into original power cord hole.

Y Make sure paint has been removed

from area where ground terminal is

secured on unit.

10 115 V Input Power Cord White Lead

Connect lead 2, lead 4, and white input power

cord lead together, and secure with existing

hardware. Reinstall insulated sleeving.

11 115 V Input Power Cord Black Lead

Connect black input power cord lead and

jumper lead to terminal 3 on S1.

Connect other end of jumper lead to terminal

1 on S1.

Use tie-wraps to secure all leads away from

transformer, stabilizer and fan. Be sure leads

are clear of movable shunt.

Tighten strain relief, and install wrapper.

Connect input power according to Section

4-10.

5/16, 3/8 in

(cut tie wraps)

Ref. 802 247-E

230V Connection 115V Connection

Tools Needed:

7/16 in

Power Switch

S1 Terminals

To Fan

OM-316 Page 18

4-9. Internal Connections For Operating 230/400 Volts, 300/200 Amperes AC/DC Or 300

Amperes AC Models From 230 Volts

Follow applicable electrical codes and have a competent electrician make internal

connections. Note the input amperes as stated in Section 4-7.

NOTE

Ref. 802 247-D

Connected For 400 Volts

Connected For 230 Volts

5/16, 3/8 in

(cut tie wraps)

Y Turn Off unit and disconnect

input power.

1 Primary Coil Lead 4

2 Lead 4 Insulation Sleeving

3 Power Switch Lead 4

4 Lead Connection Hardware

Slide Sleeving down, and discon-

nect one lead 4 from the other. Re-

move sleeving.

5 Fan Motor (FM) Lead 2

6 Lead 2 Insulation Sleeving

Disconnect fan motor lead 2 at fan

motor, and remove sleeving.

Take lead 2 sleeving and secure it

over the end of primary coil lead 4.

Replace lead 2 sleeving with lead 4

sleeving.

7 Primary Coil Lead 2

Slide sleeving out of the way, and

connect power switch Lead 4 to pri-

mary coil lead 2, and secure with

existing hardware. Secure sleeving

over connection.

Connect fan motor lead 2 back onto

fan motor.

Reinstall wrapper.

Tools Needed:

OM-316 Page 19

4-10. Connecting Input Power

Ref. 802 246

For Models Supplied With Plug

Y Disconnect and lockout/tag-

out input power before instal-

ling receptacle.

Y Have only qualified persons

make this installation. See

rating label in Section 4-4, and

be sure to supply correct in-

put power.

1 Proper Receptacle

(User-Supplied)

Receptacle must comply with appli-

cable codes.

2 Input And Grounding

Conductors

See size and length using Section

4-7. Conductors must comply with

applicable codes.

3 Over-Current Protection

Select type and size of over-current

protection using Section 4-7.

4 Plug

Connect plug to properly installed

receptacle.

For Models Not Supplied With Plug

Y Installation must meet all National and

Local Codes − have only qualified per-

sons make this installation.

Y Disconnect and lockout/tagout input

power before connecting input con-

ductors from unit.

Y Always connect green or green/yellow

conductor to supply grounding termi-

nal first, and never to a line terminal.

1 Line Disconnect Device (Switch Shown

In Off Position)

2 Disconnect Device Grounding Terminal

3 Green Or Green/Yellow Grounding

Conductor

Connect green or green/yellow grounding

conductor to disconnect device grounding ter-

minal first.

4 Disconnect Device Line Terminals

5 Black And White Input Conductors L1

And L2

Connect input conductors L1 and L2 to dis-

connect device line terminals.

6 Over-Current Protection

Select type and size of over-current protection

using Section 4-7 (fused disconnect switch

shown).

Close and secure door on disconnect device.

Remove lockout/tagout device, and place

switch in the On position.

=GND/PE Earth Ground

OM-316 Page 20

SECTION 5 − OPERATION

5-1. Controls

A. Controls For AC/DC Models

Ref. 217 857-B / 802 105-C

1 Amperage Adjustment Control

2 Power Switch

3 Mode Switch

For DC Weld Output

Use mode switch to select polarity

of dc output, Electrode Posi-

tive/DCEP (+),or Electrode Nega-

tive/DCEN (−).

For AC Weld Output

Use mode switch to select ac low

range or high range output.

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Miller Electric 225 User manual

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Model: 225

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