Tweco 300-DC User Manual
300 AC/DC
®
ARCMASTER
INVERTER ARC WELDER
Operating Manual
Version No: AB.01 Issue Date: February 22, 2006 Manual No.: 0-4863
Operating Features:
50
60
Art # A-07238
230V460
V
INVERTER
Hz
1/3
208
V
WE APPRECIA TE YOUR BUSINESS!
Congratulations on your new Thermal Arc product. We are proud
to have you as our customer and will strive to provide you with
the best service and reliability in the industry. This product is backed
by our extensive warranty and world-wide service network. To
locate your nearest distributor or service agency call
1-800-752-7621, or visit us on the web at www.Thermalarc.com.
This Operating Manual has been designed to instruct you on the
correct use and operation of your Thermal Arc product. Your
satisfaction with this product and its safe operation is our ultimate
concern. Therefore please take the time to read the entire manual,
especially the Safety Precautions. They will help you to avoid
potential hazards that may exist when working with this product.
YOU ARE IN GOOD COMPANY!
The Brand of Choice for Contractors and Fabricators Worldwide.
Thermal Arc is a Global Brand of Arc Welding Products for
Thermadyne Industries Inc. We manufacture and supply to major
welding industry sectors worldwide including; Manufacturing,
Construction, Mining, Automotive, Aerospace, Engineering, Rural
and DIY/Hobbyist.
We distinguish ourselves from our competition through marketleading, dependable products that have stood the test of time. We
pride ourselves on technical innovation, competitive prices,
excellent delivery, superior customer service and technical support,
together with excellence in sales and marketing expertise.
Above all, we are committed to develop technologically advanced
products to achieve a safer working environment within the welding
industry.
WARNINGS
Read and understand this entire Manual and your employer’s safety practices before installing,
operating, or servicing the equipment.
While the information contained in this Manual represents the Manufacturer's best judgement,
the Manufacturer assumes no liability for its use.
ArcMaster 300 AC/DC Inverter Arc Welder
Instruction Manual Number 0-4863 for:
Part Number 10-3074
Published by:
Thermadyne Corporation
82 Benning Street
West Lebanon, New Hampshire, USA 03784
(603) 298-5711
www.thermalarc.com
Copyright 2006 by
Thermadyne Corporation
All rights reserved.
Reproduction of this work, in whole or in part, without written permission of the publisher is prohibited.
The publisher does not assume and hereby disclaims any liability to any party for any
loss or damage caused by any error or omission in this Manual, whether such error
results from negligence, accident, or any other cause.
Publication Date: February 22, 2006
Record the following information for Warranty purposes:
Where Purchased: ___________________________________
Purchase Date: ___________________________________
Equipment Serial #: ___________________________________
i
TABLE OF CONTENTS
SECTION 1:
SAFETY INSTRUCTIONS AND WARNINGS ....................................................... 1-1
1.01 Arc Welding Hazards ...................................................................................... 1-1
1.02 Principal Safety Standards ............................................................................. 1-5
1.03 Precautions de Securite en Soudage à L’Arc .................................................. 1-6
1.04 Dangers Relatifs au Soudage à L’Arc .............................................................. 1-6
1.05 Principales Normes de Securite ................................................................... 1-10
SECTION 2:
INTRODUCTION ...................................................................................... 2-1
2.01 How To Use This Manual ................................................................................ 2-1
2.02 Equipment Identification................................................................................. 2-1
2.03 Receipt Of Equipment ..................................................................................... 2-1
2.04 Symbol Chart ................................................................................................. 2-2
2.05 Description ..................................................................................................... 2-3
2.06 Functional Block Diagrams ............................................................................. 2-4
2.07 Transporting Methods .................................................................................... 2-4
SECTION 3:
INSTALLATION ....................................................................................... 3-1
3.01 Environment ................................................................................................... 3-1
3.02 Location ......................................................................................................... 3-1
3.03 Electrical Input Connections ........................................................................... 3-1
3.04 Electrical Input Requirements ........................................................................ 3-2
3.05 Input Power .................................................................................................... 3-3
3.06 High Frequency Introduction .......................................................................... 3-3
3.07 High Frequency Interference .......................................................................... 3-4
3.08 Duty Cycle ...................................................................................................... 3-4
3.09 Specifications ................................................................................................. 3-5
SECTION 4:
OPERATOR CONTROLS ............................................................................. 4-1
4.01 ArcMaster 300 ACDC Controls ....................................................................... 4-1
4.02 Weld Process Selection for ArcMaster 300 ACDC .......................................... 4-3
4.03 Weld Parameter Descriptions for ArcMaster 300 ACDC ................................. 4-4
4.04 Weld Parameters for ArcMaster 300 ACDC .................................................... 4-6
4.05 Power Source Features................................................................................... 4-7
SECTION 5:
SET-UP FOR SMAW (STICK) AND GTAW (TIG) .................................................. 5-1
TABLE OF CONTENTS (continued)TABLE OF CONTENTS
SECTION 6:
SEQUENCE OF OPERATION ........................................................................ 6-1
6.01 Stick Welding ................................................................................................. 6-3
6.02 AC or DC HF TIG Welding ............................................................................... 6-3
6.03 Slope Mode Sequence .................................................................................... 6-4
6.04 Slope Mode with Repeat Sequence ................................................................ 6-4
6.05 Pulse Controls ................................................................................................ 6-5
SECTION 7:
BASIC TIG WELDING GUIDE ....................................................................... 7-1
7.01 Explanation of “Fluttery Arc” when AC TIG Welding on Aluminum ................. 7-1
7.02 Electrode Polarity ........................................................................................... 7-2
7.03 Tungsten Electrode Current Ranges ............................................................... 7-2
7.04 Tungsten Electrode Types............................................................................... 7-2
7.05 Guide for Selecting Filler Wire Diameter ......................................................... 7-3
7.06 Shielding Gas Selection .................................................................................. 7-3
7.07 TIG Welding Parameters for Low Carbon & Low Alloy Steel Pipe .................. 7-3
7.08 Welding Parameters for Aluminum ................................................................ 7-4
7.09 Welding Parameters for Steel ......................................................................... 7-4
SECTION 8:
BASIC ARC WELDING GUIDE ..................................................................... 8-1
8.01 Electrode Polarity ........................................................................................... 8-1
8.02 Effects of Stick Welding Various Materials ..................................................... 8-1
SECTION 9:
ROUTINE MAINTENANCE .......................................................................... 9-1
SECTION 10:
BASIC TROUBLESHOOTING ...................................................................... 10-1
10.01 TIG Welding Problems................................................................................ 10-1
10.02 Stick Welding Problems ............................................................................. 10-4
10.03 Power Source Problems ............................................................................. 10-7
SECTION 11:
VOLTAGE REDUCTION DEVICE (VRD) ........................................................... 11-1
11.01 VRD Specification ....................................................................................... 11-1
11.02 VRD Maintenance ....................................................................................... 11-1
11.03 Switching VRD On/Off ................................................................................ 11-2
SECTION 12:
POWER SOURCE ERROR CODES................................................................. 12-1
TABLE OF CONTENTS
APPENDIX 1: ARCMASTER 300 AC/DC ACCESSORIES ............................................... A-1
APPENDIX 2: ARCMASTER 300 AC/DC INTERCONNECT DIAGRAM................................. A-2
LIMITED WARRANTY
WARRANTY SCHEDULE
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION .......................... Inside Rear Cover
ARCMASTER 300 ACDC
SECTION 1:
SAFETY INSTRUCTIONS AND WARNINGS
WARNING
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY.
PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR. DO NOT LOSE THESE INSTRUCTIONS.
READ OPERATING/INSTRUCTION MANUAL BEFORE INSTALLING, OPERATING OR SERVICING THIS EQUIPMENT.
Welding products and welding processes can cause serious injury or death, or damage to other equipment or property,
if the operator does not strictly observe all safety rules and take precautionary actions.
Safe practices have developed from past experience in the use of welding and cutting. These practices must be
learned through study and training before using this equipment. Some of these practices apply to equipment
connected to power lines; other practices apply to engine driven equipment. Anyone not having extensive
training in welding and cutting practices should not attempt to weld.
Safe practices are outlined in the American National Standard Z49.1 entitled: SAFETY IN WELDING AND CUTTING.
This publication and other guides to what you should learn before operating this equipment are listed at the end of
these safety precautions. HAVE ALL INSTALLATION, OPERATION, MAINTENANCE, AND REPAIR WORK PERFORMED
ONLY BY QUALIFIED PEOPLE.
1.01 Arc Welding Hazards
WARNING
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.
3. Insulate yourself from work and ground using dry
insulating mats or covers.
4. Disconnect input power or stop engine before
installing or servicing this equipment. Lock input
power disconnect switch open, or remove line fuses
so power cannot be turned on accidentally.
5. Properly install and ground this equipment according
to its Owner’s Manual and national, state, and local
codes.
6. Turn off all equipment when not in use. Disconnect
power to equipment if it will be left unattended or out
of service.
7. Use fully insulated electrode holders. Never dip holder
in water to cool it or lay it down on the ground or the
work surface. Do not touch holders connected to two
welding machines at the same time or touch other
people with the holder or electrode.
8. Do not use worn, damaged, undersized, or poorly
spliced cables.
1. Do not touch live electrical parts.
2. Wear dry, hole-free insulating gloves and body
protection.
February 22, 2006
9. Do not wrap cables around your body.
10.Ground the workpiece to a good electrical (earth)
ground.
1-1
ARCMASTER 300 ACDC
11.Do not touch electrode while in contact with the work
(ground) circuit.
12. Use only well-maintained equipment. Repair or replace
damaged parts at once.
13.In confined spaces or damp locations, do not use a
welder with AC output unless it is equipped with a
voltage reducer. Use equipment with DC output.
14.Wear a safety harness to prevent falling if working
above floor level.
15.Keep all panels and covers securely in place.
WARNING
ARC RAYS can burn eyes and skin; NOISE can
damage hearing.
Arc rays from the welding process produce
intense heat and strong ultraviolet rays that
can burn eyes and skin. Noise from some
processes can damage hearing.
4. Wear protective clothing made from durable, flameresistant material (wool and leather) and foot
protection.
5. Use approved ear plugs or ear muffs if noise level is
high.
WARNING
FUMES AND GASES can be hazardous to your
health.
Welding produces fumes and gases. Breathing
these fumes and gases can be hazardous to
your health.
1. Keep your head out of the fumes. Do not breath the
fumes.
2. If inside, ventilate the area and/or use exhaust at the
arc to remove welding fumes and gases.
3. If ventilation is poor, use an approved air-supplied
respirator.
1. Wear a welding helmet fitted with a proper shade of
filter (see ANSI Z49.1 listed in Safety Standards) to
protect your face and eyes when welding or watching.
2. Wear approved safety glasses. Side shields
recommended.
3. Use protective screens or barriers to protect others
from flash and glare; warn others not to watch the
arc.
Eye protec t io n fil ter shad e se lect or f or wel din g or cutti ng
(gog gles or helmet), from AWS A6.2-73.
Weldi ng or c utt ing Electr ode S ize Filter Weldi ng or c utt ing Electrode Size F ilter
Torch soldering 2
Torch br a zing 3 or 4 Non-ferr ou s base met al All 11
Oxyg en Cutting
Light Under 1 in., 25 mm 3 or 4 Gas tung ste n ar c weldi ng All 12
Medium 1 to 6 in., 25- 150 mm 4 or 5 (T IG) All 12
Heavy Over 6 in. , 150 mm 5 or 6 Atomic hydr ogen wel ding All 12
Gas w elding
Light Under 1/8 in., 3 mm 4 or 5 Plasma arc welding
M e dium 1/8 to 1/2 in., 3- 12 mm 5 or 6
Heavy Over 1/2 in., 12 mm 6 or 8 Light 12
Shielded metal-arc
Under 5/32 in., 4 mm 10 Heavy 14
5/32 to 1/ 4 in. , 12
Over 1/ 4 in., 6.4 mm 14 Light Under 300 Amp 9
4. Read the Material Safety Data Sheets (MSDSs) and
the manufacturer’s instruction for metals,
consumables, coatings, and cleaners.
5. Work in a confined space only if it is well ventilated,
or while wearing an air-supplied respirator. Shielding
gases used for welding can displace air causing injury
or death. Be sure the breathing air is safe.
Gas metal- arc
Ferr ous base metal A ll 12
Carbon arc welding All 12
Carb on arc air go ugi ng
Pl a sma ar c cut t ing
Medium 300 to 400 A mp 12
Heavy Over 400 A mp 14
1-2
February 22, 2006
6. 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.
7. 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.
WARNING
WELDING can cause fire or explosion.
ARCMASTER 300 ACDC
WARNING
FLYING SPARKS AND HOT METAL can cause
injury.
Chipping and grinding cause flying metal. As
welds cool, they can throw off slag.
1. Wear approved face shield or safety goggles. Side
shields recommended.
2. Wear proper body protection to protect skin.
WARNING
Sparks and spatter fly off from the welding
arc. The flying sparks and hot metal, weld
spatter, hot workpiece, and hot equipment can
cause fires and burns. Accidental contact of
electrode or welding wire to metal objects can
cause sparks, overheating, or fire.
1. Protect yourself and others from flying sparks and
hot metal.
2. Do not weld where flying sparks can strike flammable
material.
3. Remove all flammables within 35 ft (10.7 m) of the
welding arc. If this is not possible, tightly cover them
with approved covers.
4. Be alert that welding sparks and hot materials from
welding can easily go through small cracks and
openings to adjacent areas.
5. Watch for fire, and keep a fire extinguisher nearby.
6. Be aware that welding on a ceiling, floor, bulkhead, or
partition can cause fire on the hidden side.
7. Do not weld on closed containers such as tanks or
drums.
8. 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.
9. Do not use welder to thaw frozen pipes.
CYLINDERS can explode if damaged.
Shielding gas cylinders contain gas under high
pressure. If damaged, a cylinder can explode.
Since gas cylinders are normally part of the
welding process, be sure to treat them
carefully.
1. Protect compressed gas cylinders from excessive heat,
mechanical shocks, and arcs.
2. Install and secure cylinders in an upright position by
chaining them to a stationary support or equipment
cylinder rack to prevent falling or tipping.
3. Keep cylinders away from any welding or other
electrical circuits.
4. Never allow a welding electrode to touch any cylinder.
5. Use only correct shielding gas cylinders, regulators,
hoses, and fittings designed for the specific
application; maintain them and associated parts in
good condition.
6. Turn face away from valve outlet when opening
cylinder valve.
7. Keep protective cap in place over valve except when
cylinder is in use or connected for use.
8. Read and follow instructions on compressed gas
cylinders, associated equipment, and CGA publication
P-1 listed in Safety Standards.
10.Remove stick electrode from holder or cut off welding
wire at contact tip when not in use.
February 22, 2006
1-3
ARCMASTER 300 ACDC
WARNING
Engines can be dangerous.
WARNING
ENGINE EXHAUST GASES can kill.
4. To prevent accidental starting during servicing,
disconnect negative (-) battery cable from battery.
5. Keep hands, hair, loose clothing, and tools away
from moving parts.
6. Reinstall panels or guards and close doors when
servicing is finished and before starting engine.
WARNING
Engines produce harmful exhaust gases.
1. Use equipment outside in open, well-ventilated areas.
2. If used in a closed area, vent engine exhaust outside
and away from any building air intakes.
WARNING
ENGINE FUEL can cause fire or explosion.
Engine fuel is highly flammable.
1. Stop engine before checking or adding fuel.
2. Do not add fuel while smoking or if unit is near any
sparks or open flames.
3. Allow engine to cool before fueling. If possible, check
and add fuel to cold engine before beginning job.
4. Do not overfill tank — allow room for fuel to expand.
5. Do not spill fuel. If fuel is spilled, clean up before
starting engine.
SPARKS can cause BATTERY GASES TO
EXPLODE; BATTERY ACID can burn eyes and
skin.
Batteries contain acid and generate explosive gases.
1. Always wear a face shield when working on a battery.
2. Stop engine before disconnecting or connecting
battery cables.
3. Do not allow tools to cause sparks when working on
a battery.
4. Do not use welder to charge batteries or jump start
vehicles.
5. Observe correct polarity (+ and –) on batteries.
WARNING
STEAM AND PRESSURIZED HOT COOLANT
can burn face, eyes, and skin.
WARNING
MOVING PARTS can cause injury.
Moving parts, such as fans, rotors, and belts can cut
fingers and hands and catch loose clothing.
1. Keep all doors, panels, covers, and guards closed
and securely in place.
2. Stop engine before installing or connecting unit.
3. Have only qualified people remove guards or
covers for maintenance and troubleshooting as
necessary.
1-4
The coolant in the radiator can be very hot
and under pressure.
1. Do not remove radiator cap when engine is hot. Allow
engine to cool.
2. Wear gloves and put a rag over cap area when
removing cap.
3. Allow pressure to escape before completely removing
cap.
February 22, 2006
ARCMASTER 300 ACDC
WARNING
This product, when used for welding or
cutting, produces fumes or gases which
contain chemicals know to the State of
California to cause birth defects and, in some
cases, cancer. (California Health & Safety code
Sec. 25249.5 et seq.)
NOTE
Considerations About Welding And The Effects
of Low Frequency Electric and Magnetic Fields
The following is a quotation from the General Conclusions
Section of the U.S. Congress, Office of Technology
Assessment,
Frequency Electric & Magnetic Fields - Background Paper,
OTA-BP-E-63 (Washington, DC: U.S. Government Printing
Office, May 1989): “...there is now a very large volume of
scientific findings based on experiments at the cellular
level and from studies with animals and people which
clearly establish that low frequency magnetic fields and
interact with, and produce changes in, biological systems.
While most of this work is of very high quality, the results
are complex. Current scientific understanding does not
yet allow us to interpret the evidence in a single coherent
framework. Even more frustrating, it does not yet allow
us to draw definite conclusions about questions of
possible risk or to offer clear science-based advice on
strategies to minimize or avoid potential risks.”
To reduce magnetic fields in the workplace, use the
following procedures.
1. Keep cables close together by twisting or taping
them.
Biological Effects of Power
1.02 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
Superintendent of Documents, U.S. Government Printing
Office, Washington, D.C. 20402.
Recommended Safe Practices for the Preparation for
Welding and Cutting 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 Protection 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.
2. Arrange cables to one side and away from the
operator.
3. Do not coil or drape cable around the body.
4. Keep welding power source and cables as far away
from body as practical.
ABOUT PACEMAKERS:
The above procedures are among those also
normally recommended for pacemaker
wearers. Consult your doctor for complete
information.
February 22, 2006
1-5
ARCMASTER 300 ACDC
1.03 Precautions de Securite en Soudage à L’Arc
MISE EN GARDE
LE SOUDAGE A L’ARC EST DANGEREUX
PROTEGEZ-VOUS, AINSI QUE LES AUTRES, CONTRE LES BLESSURES GRAVES POSSIBLES OU LA MORT. NE LAISSEZ
PAS LES ENFANTS S’APPROCHER, NI LES PORTEURS DE STIMULATEUR CARDIAQUE (A MOINS QU’ILS N’AIENT
CONSULTE UN MEDECIN). CONSERVEZ CES INSTRUCTIONS. LISEZ LE MANUEL D’OPERATION OU LES INSTRUCTIONS AVANT D’INSTALLER, UTILISER OU ENTRETENIR CET EQUIPEMENT.
Les produits et procédés de soudage peuvent sauser des blessures graves ou la mort, de même que des dommages
au reste du matériel et à la propriété, si l’utilisateur n’adhère pas strictement à toutes les règles de sécurité et ne prend
pas les précautions nécessaires.
En soudage et coupage, des pratiques sécuritaires se sont développées suite à l’expérience passée. Ces pratiques
doivent être apprises par étude ou entraînement avant d’utiliser l’equipement. Toute personne n’ayant pas suivi un
entraînement intensif en soudage et coupage ne devrait pas tenter de souder. Certaines pratiques concernent les
équipements raccordés aux lignes d’alimentation alors que d’autres s’adressent aux groupes électrogènes.
La norme Z49.1 de l’American National Standard, intitulée “SAFETY IN WELDING AND CUTTING” présente les pratiques sécuritaires à suivre. Ce document ainsi que d’autres guides que vous devriez connaître avant d’utiliser cet
équipement sont présentés à la fin de ces instructions de sécurité.
SEULES DES PERSONNES QUALIFIEES DOIVENT FAIRE
DES TRAVAUX D’INSTALLATION, DE REPARATION,
D’ENTRETIEN ET D’ESSAI.
1. Ne touchez pas à des pièces sous tension.
2. Portez des gants et des vêtements isolants, secs et
non troués.
1.04 Dangers Relatifs au Soudage à L’Arc
AVERTISSEMENT
L’ELECTROCUTION PEUT ETRE MORTELLE.
Une décharge électrique peut tuer ou brûler
gravement. L’électrode et le circuit de soudage
sont sous tension dès la mise en circuit. Le
circuit d’alimentation et les circuits internes
de l’équipement sont aussi sous tension dès
la mise en marche. En soudage automatique
ou semi-automatique avec fil, ce dernier, le
rouleau ou la bobine de fil, le logement des
galets d’entrainement et toutes les pièces
métalliques en contact avec le fil de soudage
sont sous tension. Un équipement
inadéquatement installé ou inadéquatement
mis à la terre est dangereux.
1-6
3 Isolez-vous de la pièce à souder et de la mise à la
terre au moyen de tapis isolants ou autres.
4. Déconnectez la prise d’alimentation de l’équipement
ou arrêtez le moteur avant de l’installer ou d’en faire
l’entretien. Bloquez le commutateur en circuit ouvert
ou enlevez les fusibles de l’alimentation afin d’éviter
une mise en marche accidentelle.
5. Veuillez à installer cet équipement et à le mettre à la
terre selon le manuel d’utilisation et les codes
nationaux, provinciaux et locaux applicables.
6. Arrêtez tout équipement après usage. Coupez
l’alimentation de l’équipement s’il est hors d’usage
ou inutilisé.
7. N’utilisez que des porte-électrodes bien isolés. Ne
jamais plonger les porte-électrodes dans l’eau pour
les refroidir. Ne jamais les laisser traîner par terre ou
sur les pièces à souder. Ne touchez pas aux porteélectrodes raccordés à deux sources de courant en
même temps. Ne jamais toucher quelqu’un d’autre
avec l’électrode ou le porte-électrode.
8. N’utilisez pas de câbles électriques usés,
endommagés, mal épissés ou de section trop petite.
9. N’enroulez pas de câbles électriques autour de votre
corps.
February 22, 2006
ARCMASTER 300 ACDC
10.N’utilisez qu’une bonne prise de masse pour la mise à
la terre de la pièce à souder.
11.Ne touchez pas à l’électrode lorsqu’en contact avec le
circuit de soudage (terre).
12.N’utilisez que des équipements en bon état. Réparez
ou remplacez aussitôt les pièces endommagées.
13.Dans des espaces confinés ou mouillés, n’utilisez pas
de source de courant alternatif, à moins qu’il soit muni
d’un réducteur de tension. Utilisez plutôt une source
de courant continu.
14. Portez un harnais de sécurité si vous travaillez en hauteur.
15.Fermez solidement tous les panneaux et les capots.
AVERTISSEMENT
LE RAYONNEMENT DE L’ARC PEUT BRÛLER
LES YEUX ET LA PEAU; LE BRUIT PEUT
ENDOMMAGER L’OUIE.
L’arc de soudage produit une chaleur et des
rayons ultraviolets intenses, susceptibles de
brûler les yeux et la peau. Le bruit causé par
certains procédés peut endommager l’ouïe.
1. Portez une casque de soudeur avec filtre oculaire de
nuance appropriée (consultez la norme ANSI Z49
indiquée ci-après) pour vous protéger le visage et les
yeux lorsque vous soudez ou que vous observez
l’exécution d’une soudure.
2. Portez des lunettes de sécurité approuvées. Des écrans
latéraux sont recommandés.
3. Entourez l’aire de soudage de rideaux ou de cloisons
pour protéger les autres des coups d’arc ou de
l’éblouissement; avertissez les observateurs de ne pas
regarder l’arc.
4. Portez des vêtements en matériaux ignifuges et
durables (laine et cuir) et des chaussures de sécurité.
5. Portez un casque antibruit ou des bouchons d’oreille
approuvés lorsque le niveau de bruit est élevé.
AVERTISSEMENT
LES VAPEURS ET LES FUMEES SONT
DANGEREUSES POUR LA SANTE.
Le soudage dégage des vapeurs et des fumées
dangereuses à respirer.
SELECTION DES NUANCES DE FILTRES OCULAIRS POUR LA PROTECTION
DES YEUX EN COUPAG E ET SO UDAGE (selon AWS á 8.2-73)
Opération de coupage
ou soudage
Brassage t endre
au chalumeau
Brassage fort
au chalumeau
Oxycoupage métaux ferr eux tout es condit ions 12
moyen de 1 á 6 po. ( 25 á 150 mm) 4 ou 5
Soudage aux gaz Soudage á l'arc Plasma (PAW) tout es dimensions 12
moyen de 1/8 á 1/2 po. (3 á 12 mm) 5 ou 6 mince 12
Soudage á l'arc avec
électrode enrobees
(SMAW)
Dimension d'élect rode ou
Epiasseur de métal ou
Intensité de courant
toutes conditions 2
tout es condit ions 3 ou 4 métaux non- ferr eux toutes condit ions 11
mince moins de 1 po. ( 25 mm) 2 ou 3
épais plus de 6 po. (150 mm) 5 ou 6
mince moins de 1/ 8 po. (3 mm) 4 ou 5
épais plus de 1/2 po. (12 mm) 6 ou 8 épais 14
moins de 5/32 po. ( 4 mm) 10 Coupage á l' ar c Plasma (PA C)
5/32 á 1/ 4 po. ( 4 á 6.4 mm) 12 mince moins de 300 amperès 9
plus de 1/4 po. ( 6.4 mm) 14 moyen de 300 á 400 amperès 12
Nuance de
fi l tr e oc u l ai re
Opération de coupage
ou soudage
Soudage á l'arc sous gaz
avec fil plein (GMAW)
Soudage á l'arc sous gaz avec
élect r ode de t ungstène (GTAW)
Soudage á l'hydrogène
at omique (AHW)
Soudage á l'arc avec
élect r ode de car bone (CAW)
Gougeage A i r - Arc av ec
élect r ode de car bone
Dimension d'élect rode ou
Epiasseur de métal ou
Intensité de courant
toutes conditions 12
toutes conditions 12
toutes conditions 12
épais plus de 400 am perès 14
Nuance de
fi l tr e oc u l ai re
February 22, 2006
1-7
ARCMASTER 300 ACDC
1. Eloignez la tête des fumées pour éviter de les respirer.
2. A l’intérieur, assurez-vous que l’aire de soudage est
bien ventilée ou que les fumées et les vapeurs sont
aspirées à l’arc.
3. Si la ventilation est inadequate, portez un respirateur
à adduction d’air approuvé.
4. Lisez les fiches signalétiques et les consignes du
fabricant relatives aux métaux, aux produits
consummables, aux revêtements et aux produits
nettoyants.
5. Ne travaillez dans un espace confiné que s’il est bien
ventilé; sinon, portez un respirateur à adduction d’air.
Les gaz protecteurs de soudage peuvent déplacer
l’oxygène de l’air et ainsi causer des malaises ou la
mort. Assurez-vous que l’air est propre à la respiration.
6. Ne soudez pas à proximité d’opérations de
dégraissage, de nettoyage ou de pulvérisation. La
chaleur et les rayons de l’arc peuvent réagir avec des
vapeurs et former des gaz hautement toxiques et irritants.
7. Ne soudez des tôles galvanisées ou plaquées au plomb
ou au cadmium que si les zones à souder ont été
grattées à fond, que si l’espace est bien ventilé; si
nécessaire portez un respirateur à adduction d’air. Car
ces revêtements et tout métal qui contient ces
éléments peuvent dégager des fumées toxiques au
moment du soudage.
1. Protégez-vous, ainsi que les autres, contre les
étincelles et du métal chaud.
2. Ne soudez pas dans un endroit où des particules
volantes ou des projections peuvent atteindre des
matériaux inflammables.
3. Enlevez toutes matières inflammables dans un rayon
de 10, 7 mètres autour de l’arc, ou couvrez-les
soigneusement avec des bâches approuvées.
4. Méfiez-vous des projections brulantes de soudage
susceptibles de pénétrer dans des aires adjacentes
par de petites ouvertures ou fissures.
5. Méfiez-vous des incendies et gardez un extincteur à
portée de la main.
6. N’oubliez pas qu’une soudure réalisée sur un plafond,
un plancher, une cloison ou une paroi peut enflammer
l’autre côté.
7. Ne soudez pas un récipient fermé, tel un réservoir ou
un baril.
8. Connectez le câble de soudage le plus près possible
de la zone de soudage pour empêcher le courant de
suivre un long parcours inconnu, et prévenir ainsi les
risques d’électrocution et d’incendie.
9. Ne dégelez pas les tuyaux avec un source de courant.
10.Otez l’électrode du porte-électrode ou coupez le fil au
tube-contact lorsqu’inutilisé après le soudage.
11.Portez des vêtements protecteurs non huileux, tels
des gants en cuir, une chemise épaisse, un pantalon
revers, des bottines de sécurité et un casque.
AVERTISSEMENT
LE SOUDAGE PEUT CAUSER UN INCENDIE OU
UNE EXPLOSION
L’arc produit des étincellies et des projections.
Les particules volantes, le métal chaud, les
projections de soudure et l’équipement
surchauffé peuvent causer un incendie et des
brûlures. Le contact accidentel de l’électrode
ou du fil-électrode avec un objet métallique
peut provoquer des étincelles, un
échauffement ou un incendie.
1-8
AVERTISSEMENT
LES ETINCELLES ET LES PROJECTIONS
BRULANTES PEUVENT CAUSER DES
BLESSURES.
Le piquage et le meulage produisent des
particules métalliques volantes. En
refroidissant, la soudure peut projeter du
éclats de laitier.
1. Portez un écran facial ou des lunettes protectrices
approuvées. Des écrans latéraux sont
recommandés.
2. Portez des vêtements appropriés pour protéger
la peau.
February 22, 2006
ARCMASTER 300 ACDC
1. Utilisez l’équipement à l’extérieur dans des aires
ouvertes et bien ventilées.
AVERTISSEMENT
LES BOUTEILLES ENDOMMAGEES PEUVENT
EXPLOSER
Les bouteilles contiennent des gaz protecteurs
sous haute pression. Des bouteilles
endommagées peuvent exploser. Comme les
bouteilles font normalement partie du procédé
de soudage, traitez-les avec soin.
1. Protégez les bouteilles de gaz comprimé contre les
sources de chaleur intense, les chocs et les arcs de
soudage.
2. Enchainez verticalement les bouteilles à un support
ou à un cadre fixe pour les empêcher de tomber ou
d’être renversées.
3. Eloignez les bouteilles de tout circuit électrique ou de
tout soudage.
4. Empêchez tout contact entre une bouteille et une
électrode de soudage.
2. Si vous utilisez ces équipements dans un endroit
confiné, les fumées d’échappement doivent être
envoyées à l’extérieur, loin des prises d’air du bâtiment.
AVERTISSEMENT
LE CARBURANT PEUR CAUSER UN INCENDIE
OU UNE EXPLOSION.
Le carburant est hautement inflammable.
1. Arrêtez le moteur avant de vérifier le niveau e
carburant ou de faire le plein.
2. Ne faites pas le plein en fumant ou proche d’une source
d’étincelles ou d’une flamme nue.
3. Si c’est possible, laissez le moteur refroidir avant de
faire le plein de carburant ou d’en vérifier le niveau au
début du soudage.
4. Ne faites pas le plein de carburant à ras bord: prévoyez
de l’espace pour son expansion.
5. N’utilisez que des bouteilles de gaz protecteur, des
détendeurs, des boyauxs et des raccords conçus pour
chaque application spécifique; ces équipements et les
pièces connexes doivent être maintenus en bon état.
6. Ne placez pas le visage face à l’ouverture du robinet
de la bouteille lors de son ouverture.
7. Laissez en place le chapeau de bouteille sauf si en
utilisation ou lorsque raccordé pour utilisation.
8. Lisez et respectez les consignes relatives aux bouteilles
de gaz comprimé et aux équipements connexes, ainsi
que la publication P-1 de la CGA, identifiée dans la
liste de documents ci-dessous.
AVERTISSEMENT
LES MOTEURS PEUVENT ETRE DANGEREUX
LES GAZ D’ECHAPPEMENT DES MOTEURS
PEUVENT ETRE MORTELS.
5. Faites attention de ne pas renverser de carburant.
Nettoyez tout carburant renversé avant de faire
démarrer le moteur.
AVERTISSEMENT
DES PIECES EN MOUVEMENT PEUVENT
CAUSER DES BLESSURES.
Des pièces en mouvement, tels des
ventilateurs, des rotors et des courroies
peuvent couper doigts et mains, ou accrocher
des vêtements amples.
1. Assurez-vous que les portes, les panneaux, les capots
et les protecteurs soient bien fermés.
2. Avant d’installer ou de connecter un système, arrêtez
le moteur.
3. Seules des personnes qualifiées doivent démonter des
protecteurs ou des capots pour faire l’entretien ou le
dépannage nécessaire.
Les moteurs produisent des gaz d’échappement nocifs.
February 22, 2006
1-9
ARCMASTER 300 ACDC
4. Pour empêcher un démarrage accidentel pendant
l’entretien, débranchez le câble d’accumulateur à la
borne négative.
5. N’approchez pas les mains ou les cheveux de pièces
en mouvement; elles peuvent aussi accrocher des
vêtements amples et des outils.
6. Réinstallez les capots ou les protecteurs et fermez les
portes après des travaux d’entretien et avant de faire
démarrer le moteur.
AVERTISSEMENT
DES ETINCELLES PEUVENT FAIRE EXPLOSER
UN ACCUMULATEUR; L’ELECTROLYTE D’UN
ACCUMU-LATEUR PEUT BRULER LA PEAU ET
LES YEUX.
Les accumulateurs contiennent de l’électrolyte
acide et dégagent des vapeurs explosives.
1. Portez toujours un écran facial en travaillant sur un
accumu-lateur.
2. Arrêtez le moteur avant de connecter ou de
déconnecter des câbles d’accumulateur.
3. N’utilisez que des outils anti-étincelles pour travailler
sur un accumulateur.
4. N’utilisez pas une source de courant de soudage pour
charger un accumulateur ou survolter
momentanément un véhicule.
5. Utilisez la polarité correcte (+ et –) de l’accumulateur.
AVERTISSEMENT
LA VAPEUR ET LE LIQUIDE DE
REFROIDISSEMENT BRULANT SOUS
PRESSION PEUVENT BRULER LA PEAU ET
LES YEUX.
Le liquide de refroidissement d’un radiateur
peut être brûlant et sous pression.
1. N’ôtez pas le bouchon de radiateur tant que le moteur
n’est pas refroidi.
2. Mettez des gants et posez un torchon sur le bouchon
pour l’ôter.
3. Laissez la pression s’échapper avant d’ôter
complètement le bouchon.
1.05 Principales Normes de Securite
Safety in Welding and Cutting, norme ANSI Z49.1, American
Welding Society, 550 N.W. LeJeune Rd., Miami, FL 33128.
Safety and Health Standards, OSHA 29 CFR 1910, Superintendent
of Documents, U.S. Government Printing Office, Washington, D.C.
20402.
Recommended Safe Practices for the Preparation for Welding and
Cutting of Containers That Have Held Hazardous Substances,
norme AWS F4.1, American Welding Society, 550 N.W. LeJeune
Rd., Miami, FL 33128.
National Electrical Code, norme 70 NFPA, National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269.
Safe Handling of Compressed Gases in Cylinders, document P-1,
Compressed Gas Association, 1235 Jefferson Davis Highway , Suite
501, Arlington, VA 22202.
Code for Safety in Welding and Cutting, norme CSA W117.2
Association canadienne de normalisation, Standards Sales, 276
Rexdale Boulevard, Rexdale, Ontario, Canada M9W 1R3.
Safe Practices for Occupation and Educational Eye and Face
Protection, norme ANSI Z87.1, American National Standards
Institute, 1430 Broadway, New York, NY 10018.
Cutting and Welding Processes, norme 51B NFPA, National Fire
Protection Association, Batterymarch Park, Quincy, MA 02269.
1-10
February 22, 2006
ARCMASTER 300 ACDC
!
SECTION 2:
INTRODUCTION
2.01 How To Use This Manual
This Owner’s Manual applies to just specification or part
numbers listed on page i.
To ensure safe operation, read the entire manual, including
the chapter on safety instructions and warnings.
Throughout this manual, the words WARNING,
CAUTION, and NOTE may appear. Pay particular attention
to the information provided under these headings. These
special annotations are easily recognized as
follows:
WARNING
A WARNING gives information regarding
possible personal injury.
2.02 Equipment Identification
The unit’s identification number (specification or part
number), model, and serial number usually appear on a
nameplate attached to the control panel. In some cases,
the nameplate may be attached to the rear panel.
Equipment which does not have a control panel such as
gun and cable assemblies is identified only by the
specification or part number printed on the shipping
container. Record these numbers on the bottom of page
i for future reference.
2.03 Receipt Of Equipment
When you receive the equipment, check it against the
invoice to make sure it is complete and inspect the
equipment for possible damage due to shipping. If there
is any damage, notify the carrier immediately to file a
claim. Furnish complete information concerning damage
claims or shipping errors to the location in your area
listed in the inside back cover of this manual.
Include all equipment identification numbers as described
above along with a full description of the parts in error.
CAUTION
A CAUTION refers to possible equipment
damage.
NOTE
A NOTE offers helpful information concerning
certain operating procedures.
Additional copies of this manual may be purchased by
contacting Thermal Arc at the address and phone number
in your area listed in the inside back cover of this manual.
Include the manual number and equipment identification
numbers.
Electronic copies of this manual can also be downloaded
at no charge in Acrobat PDF format by going to the
Thermal Arc web site listed below and clicking on the
Literature Library link:
http://www.thermalarc.com
Move the equipment to the installation site before uncrating the unit. Use care to avoid damaging the
equipment when using bars, hammers, etc., to un-crate
the unit.
February 22, 2006
2-1
ARCMASTER 300 ACDC
2.04 Symbol Chart
Note that only some of these symbols will appear on your model.
On
Off
Dangerous Voltage
Increase/Decrease
Circuit Breaker
AC Auxiliary Power
Fuse
Amperage
Voltage
X
%
Single Phase
Three Phase
Three Phase Static
Frequency ConverterTransformer-Rectifier
Remote
Duty Cycle
Percentage
Panel/Local
Shielded Metal
Arc Welding (SMAW)
Gas Metal Arc
Welding (GMAW)
Wire Feed Function
Wire Feed Towards
Workpiece With
t1
Output Voltage Off.
Welding Gun
Purging Of Gas
Continuous Weld
Mode
Spot Weld Mode
Spot Time
t
Preflow Time
Postflow Time
t2
Hertz (cycles/sec)
Frequency
Negative
Positive
Direct Current (DC)
Protective Earth
(Ground)
Line
Line Connection
Auxiliary Power
Gas Tungsten Arc
Welding (GTAW)
Air Carbon Arc
Cutting (CAC-A)
Constant Current
Constant Voltage
Or Constant Potential
High Temperature
Fault Indication
Arc Force
Touch Start (GTAW)
Variable Inductance
2 Step Trigger
Operation
Press to initiate wirefeed and
welding, release to stop.
4 Step Trigger
Operation
Press and hold for preflow, release
to start arc. Press to stop arc, and
hold for preflow.
Burnback Time
t
IPM
MPM
Inches Per Minute
Meters Per Minute
115V 15A
2-2
Receptacle RatingAuxiliary Power
Voltage Input
V
Art # A-04130
February 22, 2006
2.05 Description
ARCMASTER 300 ACDC
The Thermal ArcTM Model 300ACDC is a self contained
single/three-phase AC/DC arc welding power source with
Constant Current (CC) output characteristics. This unit is
equipped with a Digital Volt/Amperage Meter, gas control
valve, built in Sloper and Pulser, lift arc starter, and highfrequency arc starter for use with Gas Tungsten Arc
Welding (GTAW), Gas Tungsten Arc Welding-Pulsed
(GTAW-P) Gas Tungsten Arc Welding- Sloped (GTAW-S),
and Shielded Metal Arc Welding (SMAW) processes. The
power source is totally enclosed in an impact resistant,
flame retardant and non-conductive plastic case.
NOTE
Volt-Ampere curves show the maximum
Voltage and Amperage output capabilities of
the welding power source. Curves of other
settings will fall between the curves shown.
(V)
OCV
(V)
OCV
10V
Art # A-04980
300A )A(A5
STICK Process
300A )A(A52
LIFT TIG Process
(V)
OCV
5A
300A (A)
HF TIG Process
Figure 2-1: Model 300 ACDC Volt-Ampere curve
February 22, 2006
2-3
ARCMASTER 300 ACDC
2.06 Functional Block Diagrams
Figure 2-2 illustrates the functional block diagram of the 300 ACDC-power supply.
Input
Powe r
Main
Circuit
Switch
Filter
Input
Diode
DC Power
Drive
Circuit
Capacitor
DC Power
Primary
Voltage
Sensor
To each control circuit
+/-15VDC +18VDC
+24VDC +5VDC
Trouble
Sensing
Torch Control
Connection
(CON1)
Thermal
Detector
Circuit
To each control circuit
IGBT
Inverter
Drive
Circuit
Adjustment
+/-12VDC +15VDC
Main
Transformer
(PCB14)
Th ermal
Sensor
Circuit
Primary
Current
Sensor
Sequence
Current
circuit
Mode select Switches
Panel Circuit Board
Control
Reference
Adjustment &
Output
Diodes
Thermal
Detector
HF-UNIT
Control
Circuit
Stick Mode
VRD
Sensing
Circuit
Figure 2-2: 300 ACDC Model Functional Block Diagram
Output
Inductor
Fan Control
Gas Control
Lift Tig Mode
Output Short
Sensing
Circuit
Circuit
Circuit
Art # A-04981
Secondary
IGBT
Inverter
Coupling
Frequency
Fan
Solenoid
Coil
High
Unit
Hall Current
Transformer
(HCT1)
2.07 Transporting Methods
These units are equipped with a handle for carrying
purposes.
WARNING
ELECTRIC SHOCK can kill. DO NOT TOUCH
live electrical parts. Disconnect input power
conductors from de-energized supply line
before moving the welding power source.
WARNING
FALLING EQUIPMENT can cause serious
personal injury and equipment damage.
• Lift unit with handle on top of case.
• Use handcart or similar device of adequate capacity.
• If using a fork lift vehicle, place and secure unit on a
proper skid before transporting.
2-4
February 22, 2006
ARCMASTER 300 ACDC
SECTION 3:
INSTALLATION
3.01 Environment
The ArcMaster 300 ACDC is designed for use in adverse
environments.
Examples of environments with increased adverse
conditions are:
a. In locations in which freedom of movement is
restricted, so that the operator is forced to perform the
work in a cramped (kneeling, sitting or lying) position
with physical contact with conductive parts;
b. In locations which are fully or partially limited by
conductive elements, and in which there is a high risk of
unavoidable or accidental contact by the operator;
c. In wet or damp hot locations where humidity or
perspiration considerably reduces the skin resistance of
the human body and the insulation properties of
accessories.
3.03 Electrical Input Connections
WARNING
ELECTRIC SHOCK can kill; SIGNIFICANT DC
VOLTAGE is present after removal of input
power.
DO NOT TOUCH live electrical parts.
SHUT DOWN welding power source, disconnect input
power employing lockout/tagging procedures. Lockout/
tagging procedures consist of padlocking line disconnect
switch in open position, removing fuses from fuse box,
or shutting off and red-tagging circuit breaker or other
disconnecting device.
Environments with adverse conditions do not include
places where electrically conductive parts, in the near
vicinity of the operator, which can cause increased hazard,
have been insulated.
3.02 Location
Be sure to locate the welder according to the following
guidelines:
·
In areas, free from moisture and dust.
·
Ambient temperature between 0 degrees C to 40
degrees C.
·
In areas, free from oil, steam and corrosive gases.
·
In areas, not subjected to abnormal vibration or
shock.
·
In areas, not exposed to direct sunlight or rain.
·
Place at a distance of 12" (304.79mm) or more from
walls or similar boundaries that could restrict natural
airflow for cooling.
WARNING
Thermal Arc advises that this equipment be
electrically connected by a qualified electrician.
Februrary 22, 2006
3-1
ARCMASTER 300 ACDC
3.04 Electrical Input Requirements
Operate the welding power source from a single or threephase 50/60 Hz, AC power supply. The input voltage must
match one of the electrical input voltages shown on the
input data label on the unit nameplate. Contact the local
electric utility for information about the type of electrical
service available, how proper connections should be
made, and any inspection required.
The line disconnect switch provides a safe and convenient
means to completely remove all electrical power from
the welding power supply whenever necessary to inspect
or service the unit.
NOTE
These units are equipped with a threeconductor with earth power cable that is
connected at the welding power source end
for single and three phase electrical input
power.
Do not connect an input (WHITE or BLACK or RED)
conductor to the ground terminal.
Do not connect the ground (GREEN) conductor to an input
line terminal.
Refer to Figure 3-1 and:
1. Connect end of ground (GREEN) conductor to a
suitable ground. Use a grounding method that complies
with all applicable electrical codes.
2. Connect ends of line 1 (BLACK) and line 2 (WHITE)
and line 3 (RED) input conductors to a de-energized line
disconnect switch.
3. Use Table 3-1 and Table 3-2 as a guide to select line
fuses for the disconnect switch.
Input Voltage Fuse Size
208V 100 Amps
230V 100 Amps
480V 50 Amps
Table 3-1: Electrical Input Connections
NOTE
Fuse size is based on not more than 200 percent of the rated input amperage of the welding power source
(Based on Article 630, National Electrical Code).
Welding Power Supply
Ground Conductor
Ground Terminal
Line Disconnect Switch
Art # A-04982
3-2
Primary Power Cable
Figure 3-1: Electrical Input Connections
Line Fuse
February 22, 2006
ARCMASTER 300 ACDC
3.05 Input Power
Each unit incorporates an INRUSH circuit and input voltage
sensing circuit. When the MAIN CIRCUIT SWITCH is
turned on, the inrush circuit provides a pre-charging of
the input capacitors. At this point, the Bus Voltages are
checked and the welder is enabled after the input
capacitors have charged to full operating voltage (after
approximately 5 seconds).
NOTE
Note the available input power. Damage to the
welder could occur if 575VAC or higher is
applied.
The following 208-230/460V Primary Current
recommendations are required to obtain the maximum
welding current and duty cycle from this welding
equipment:
Model Lead Size Current
ARC
MASTER
300ACDC
Primary Minimum Current & Duty
Supply Primary Cycle
(Factory Circuit Size
Fitted) (Vin/Amps)
208/31
230/28
460/14
3φ
208/45
1φ
230/41
460/21
208/67
230/60
208/97
230/87
8/4 AWG
minimum
TIG STICK
300 @
25%
--
--
--
300 @
25%
--
--
300 @
25%
300 @
25%
--
--
--
--
--
3.06 High Frequency Introduction
The importance of correct installation of high frequency
welding equipment cannot be over-emphasized.
Interference due to high frequency initiated or stabilized
arc is almost invariably traced to improper installation.
The following information is intended as a guide for
personnel installing high frequency welding machines.
WARNING: EXPLOSIVES
The high frequency section of this machine
has an output similar to a radio transmitter.
The machine should NOT be used in the
vicinity of blasting operations due to the
danger of premature firing.
WARNING: COMPUTERS
It is also possible that operation close to
computer installations may cause computer
malfunction.
Table 3-2 208/230V Primary Current Circuit sizes to
achieve maximum current
Februrary 22, 2006
3-3
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