Plasma Welding Torch
Model PWH/M-2A
Instruction Manual
April 19, 2002 Manual No. 0-2005
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.
Plasma Welding Tor ch
PWH/M-2A
Instruction Manual Number 0-2005
Published by:
Thermal Dynamics Corporation
82 Benning Street
West Lebanon, New Hampshire, USA 03784
(603) 298-5711
www.thermal-dynamics.com
Copyright 1985 by
Thermal Dynamics 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.
Printed in the United States of America
Publication Date: April 19, 2002
Record the following information for Warranty purposes:
Where Purchased:____________________________________
Purchase Date:_______________________________________
Power Supply Serial #:________________________________
Torch Serial #:________________________________________
Contents
GENERAL INFORMATION.............................................................................................................i
1.01 Notes, Cautions and Warnings..........................................................................i
1.02 Important Safety Precautions ............................................................................ i
1.03 Publications......................................................................................................ii
1.04 Note, Attention et Avertissement ..................................................................... iii
1.05 Precautions De Securite Importantes.............................................................. iii
1.06 Documents De Reference............................................................................... v
1.07 Declaration of Conformity............................................................................... vii
1.08 Statement of W arranty................................................................................... viii
SPECIFICATIONS ..................................................................................................................... 1-1
1.1. DESCRIPTION OF EQUIPMENT ................................................................ 1-1
1.2. SPECIFICATIONS........................................................................................ 1-1
1.3. THERMAL ARC PLASMA............................................................................ 1-3
1.4. THEORY OF OPERATION........................................................................... 1-3
INSTALLATION.......................................................................................................................... 2-1
2.1. UNPACKING NEW EQUIPMENT................................................................. 2-1
2.2. HAND TORCH INSTALLATION .................................................................... 2-1
2.3. MACHINE T ORCH INST ALLATION.............................................................. 2-1
OPERATION.............................................................................................................................. 3-1
3.1. PRE-OPERATION SET -UP .......................................................................... 3-1
3.2. HAND TORCH OPERATION ........................................................................ 3-3
3.3. MACHINE TORCH OPERATION.................................................................. 3-3
SERVICE................................................................................................................................... 4-1
4.1. T ORCH MAINTENANCE ............................................................................... 4-1
4.2. TORCH LEADS REPLACEMENT ................................................................ 4-2
4.3 TORCH LEADS REPAIR.............................................................................. 4-4
PARTS LIST .............................................................................................................................. 5-1
5.1. GENERAL ARRANGEMENT......................................................................... 5-1
GENERAL INFORMATION
1.01 Notes, Cautions and Warnings
Throughout this manual, notes, cautions, and warnings
are used to highlight important information. These highlights are categorized as follows:
NOTE
An operation, procedure, or backgr ound information which requires additional emphasis or is helpful in efficient operation of the system.
CAUTION
A procedure which, if not properly followed, may
cause damage to the equipment.
WARNING
A procedure which, if not properly followed, may
cause injury to the operator or others in the operating area.
1.02 Important Safety Precautions
WARNINGS
OPERATION AND MAINTENANCE OF
PLASMA ARC EQUIPMENT CAN BE DANGEROUS AND HAZARDOUS TO YOUR
HEALTH.
Plasma arc cutting produces intense electric and
magnetic emissions that may interfere with the
proper function of cardiac pacemakers, hearing
aids, or other electronic health equipment. Persons who work near plasma arc cutting applications should consult their medical health professional and the manufacturer of the health
equipment to determine whether a hazard exists.
To prevent possible injury, read, understand and
follow all warnings, safety precautions and instructions before using the equipment. Call 1-603298-5711 or your local distributor if you have any
questions.
GASES AND FUMES
Gases and fumes produced during the plasma cutting
process can be dangerous and hazardous to your health.
• Keep all fumes and gases from the breathing ar ea.
Keep your head out of the welding fume plume.
• Use an air-supplied respirator if ventilation is not
adequate to remove all fumes and gases.
• The kinds of fumes and gases from the plasma arc
depend on the kind of metal being used, coatings
on the metal, and the different pr ocesses. Y ou must
be very careful when cutting or welding any metals which may contain one or more of the following:
Antimony Chromium Mercury
Arsenic Cobalt Nickel
Barium Copper Selenium
Beryllium Lead Silver
Cadmium Manganese Vanadium
• Always read the Material Safety Data Sheets
(MSDS) that should be supplied with the material
you are using. These MSDSs will give you the information regarding the kind and amount of fumes
and gases that may be dangerous to your health.
• For information on how to test for fumes and gases
in your workplace, refer to item 1 in Subsection 1.03,
Publications in this manual.
• Use special equipment, such as water or down draft
cutting tables, to capture fumes and gases.
• Do not use the plasma torch in an area where combustible or explosive gases or materials are located.
• Phosgene, a toxic gas, is generated from the vapors
of chlorinated solvents and cleansers. Remove all
sources of these vapors.
• This product, when used for welding or cutting,
produces fumes or gases which contain chemicals
known to the State of California to cause birth defects and, in some cases, cancer . (California Health
& Safety Code Sec. 25249.5 et seq.)
ELECTRIC SHOCK
Electric Shock can injure or kill. The plasma arc process
uses and produces high voltage electrical energy. This
electric energy can cause severe or fatal shock to the operator or others in the workplace.
• Never touch any parts that are electrically “live”
or “hot.”
• Wear dry gloves and clothing. Insulate yourself
from the work piece or other parts of the welding
circuit.
• Repair or replace all worn or damaged parts.
Date: No v ember 15, 2001 i GENERAL INFORMATION
• Extra care must be taken when the workplace is
moist or damp.
• Install and maintain equipment according to NEC
code, refer to item 9 in Subsection 1.03, Publications.
• Disconnect power source before performing any
service or repairs.
• Read and follow all the instructions in the Operating Manual.
FIRE AND EXPLOSION
Fire and explosion can be caused by hot slag, sparks, or
the plasma arc.
• Be sure there is no combustible or flammable material in the workplace. Any material that cannot
be removed must be protected.
• Ventilate all flammable or explosive vapors from
the workplace.
• Do not cut or weld on containers that may have
held combustibles.
• Provide a fire watch when working in an area wher e
fire hazards may exist.
• Hydrogen gas may be formed and trapped under
aluminum workpieces when they are cut underwater or while using a water table. DO NOT cut
aluminum alloys underwater or on a water table
unless the hydrogen gas can be eliminated or dissipated. T rapped hydrogen gas that is ignited will
cause an explosion.
NOISE
Plasma Arc Rays can injure your eyes and burn your skin.
The plasma arc process produces very bright ultra violet
and infra red light. These arc rays will damage your
eyes and burn your skin if you are not properly pr otected.
• To protect your eyes, always wear a welding helmet or shield. Also always wear safety glasses with
side shields, goggles or other protective eye wear.
• Wear welding gloves and suitable clothing to protect your skin from the arc rays and sparks.
• Keep helmet and safety glasses in good condition.
Replace lenses when cracked, chipped or dirty.
• Protect others in the work area from the arc rays.
Use protective booths, screens or shields.
• Use the shade of lens as suggested in the following
per ANSI/ASC Z49.1:
Minimum Protective Suggested
Arc Current Shade No. Shade No.
Less Than 300* 8 9
300 - 400* 9 12
400 - 800* 10 14
* These values apply where the actual arc is clearly
seen. Experience has shown that lighter filters
may be used when the arc is hidden by the workpiece.
1.03 Publications
Refer to the following standards or their latest revisions
for more information:
1. OSHA, SAFETY AND HEAL TH STANDARDS, 29CFR
1910, obtainable from the Superintendent of Documents, U.S. Government Printing Office, Washington,
D.C. 20402
Noise can cause permanent hearing loss. Plasma arc processes can cause noise levels to exceed safe limits. You
must protect your ears from loud noise to prevent permanent loss of hearing.
• T o protect your hearing from loud noise, wear pr otective ear plugs and/or ear muffs. Protect others
2. ANSI Standard Z49.1, SAFETY IN WELDING AND
CUTTING, obtainable from the American Welding Society, 550 N.W. LeJeune Rd, Miami, FL 33126
3. NIOSH, SAFETY AND HEALTH IN ARC WELDING
AND GAS WELDING AND CUTTING, obtainable
from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402
in the workplace.
• Noise levels should be measured to be sure the decibels (sound) do not exceed safe levels.
• For information on how to test for noise, see item 1
in Subsection 1.03, Publications, in this manual.
PLASMA ARC RAYS
4. ANSI Standard Z87.1, SAFE PRACTICES FOR OCCUP ATION AND EDUCA TIONAL EYE AND F ACE PROTECTION, obtainable from American National Standards Institute, 1430 Broadway, New York, NY 10018
5. ANSI Standard Z41.1, STANDARD FOR MEN’S
SAFETY -TOE FOOTWEAR, obtainable from the American National Standards Institute, 1430 Broadway, New
York, NY 10018
6. ANSI Standard Z49.2, FIRE PREVENTION IN THE
USE OF CUTTING AND WELDING PROCESSES, obtainable from American National Standards Institute,
1430 Broadway, New York, NY 10018
GENERAL INFORMATION ii Date: Nov ember 15, 2001
7. AWS Standar d A6.0, WELDING AND CUTTING CONTAINERS WHICH HAVE HELD COMBUSTIBLES, obtainable from American Welding Society, 550 N.W.
LeJeune Rd, Miami, FL 33126
8. NFPA Standard 51, OXYGEN-FUEL GAS SYSTEMS
FOR WELDING, CUTTING AND ALLIED PROCESSES, obtainable from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269
9. NFPA Standard 70, NATIONAL ELECTRICAL CODE,
obtainable from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269
10. NFP A Standard 51B, CUTTING AND WELDING PROCESSES, obtainable from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269
ATTENTION
Toute procédure pouvant résulter
l’endommagement du matériel en cas de nonrespect de la procédur e en question.
AVERTISSEMENT
Toute procédure pouvant provoquer des blessures
de l’opérateur ou des autres personnes se trouvant
dans la zone de travail en cas de non-respect de la
procédure en question.
11. CGA Pamphlet P-1, SAFE HANDLING OF COMPRESSED GASES IN CYLINDERS, obtainable from the
Compressed Gas Association, 1235 Jefferson Davis
Highway, Suite 501, Arlington, VA 22202
12. CSA Standard W117.2, CODE FOR SAFETY IN WELDING AND CUTTING, obtainable from the Canadian
Standards Association, Standards Sales, 178 Rexdale
Boulevard, Rexdale, Ontario, Canada M9W 1R3
13. NWSA booklet, WELDING SAFETY BIBLIOGRAPHY
obtainable from the National Welding Supply Association, 1900 Arch Street, Philadelphia, PA 19103
14. American Welding Society Standar d A WSF4.1, RECOMMENDED SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND CUTTING OF CONT AINERS AND PIPING THAT HA VE HELD HAZARDOUS
SUBSTANCES, obtainable fr om the American Welding
Society, 550 N.W. LeJeune Rd, Miami, FL 33126
15. ANSI Standard Z88.2, PRACTICE FOR RESPIRA TORY
PROTECTION, obtainable from American National
Standards Institute, 1430 Broadway, New York, NY
10018
1.04 Note, Attention et
Avertissement
Dans ce manuel, les mots “note,” “attention,” et
“avertissement” sont utilisés pour mettre en relief des
informations à caractère important. Ces mises en relief
sont classifiées comme suit :
1.05 Precautions De Securite Importantes
AVERTISSEMENTS
L’OPÉRATION ET LA MAINTENANCE DU
MATÉRIEL DE SOUDAGE À L’ARC AU JET
DE PLASMA PEUVENT PRÉSENTER DES
RISQUES ET DES DANGERS DE SANTÉ.
Coupant à l’arc au jet de plasma produit de l’énergie
électrique haute tension et des émissions
magnétique qui peuvent interférer la fonction
propre d’un “pacemaker” cardiaque, les appareils
auditif, ou autre matériel de santé electronique.
Ceux qui travail près d’une application à l’arc au
jet de plasma devrait consulter leur membre
professionel de médication et le manufacturier de
matériel de santé pour déterminer s’il existe des
risques de santé.
Il faut communiquer aux opérateurs et au personnel TOUS les dangers possibles. Afin d’éviter les
blessures possibles, lisez, comprenez et suivez tous
les avertissements, toutes les précautions de sécurité
et toutes les consignes avant d’utiliser le matériel.
Composez le + 603-298-5711 ou votr e distributeur
local si vous avez des questions.
NOTE
Toute opération, procédure ou renseignement
général sur lequel il importe d’insister davantage
ou qui contribue à l’efficacité de fonctionnement
du système.
Date: No v ember 15, 2001 iii GENERAL INFORMATION
La fumée et les gaz produits par le procédé de jet de
plasma peuvent présenter des risques et des dangers de
santé.
FUMÉE et GAZ
• Eloignez toute fumée et gaz de votre zone de respiration. Gardez votre tête hors de la plume de fumée
provenant du chalumeau.
• Utilisez un appareil respiratoire à alimentation en air
si l’aération fournie ne permet pas d’éliminer la fumée
et les gaz.
• Ne touchez jamais une pièce “sous tension” ou “vive”;
portez des gants et des vêtements secs. Isolez-vous
de la pièce de travail ou des autres parties du circuit
de soudage.
• Réparez ou remplacez toute pièce usée ou
endommagée.
• Les sortes de gaz et de fumée provenant de l’arc de
plasma dépendent du genre de métal utilisé, des
revêtements se trouvant sur le métal et des différ ents
procédés. Vous devez prendre soin lorsque vous
coupez ou soudez tout métal pouvant contenir un ou
plusieurs des éléments suivants:
antimoine cadmium mercure
argent chrome nickel
arsenic cobalt plomb
baryum cuivre sélénium
béryllium manganèse vanadium
• Lisez toujours les fiches de données sur la sécurité
des matières (sigle américain “MSDS”); celles-ci
devraient être fournies avec le matériel que vous
utilisez. Les MSDS contiennent des renseignements
quant à la quantité et la nature de la fumée et des gaz
pouvant poser des dangers de santé.
• Pour des informations sur la manière de tester la
fumée et les gaz de votre lieu de travail, consultez
l’article 1 et les documents cités à la page 5.
• Utilisez un équipement spécial tel que des tables de
coupe à débit d’eau ou à courant descendant pour
capter la fumée et les gaz.
• N’utilisez pas le chalumeau au jet de plasma dans une
zone où se trouvent des matières ou des gaz combustibles ou explosifs.
• Le phosgène, un gaz toxique, est généré par la fumée
provenant des solvants et des produits de nettoyage
chlorés. Eliminez toute source de telle fumée.
• Ce produit, dans le procéder de soudage et de coupe,
produit de la fumée ou des gaz pouvant contenir des
éléments reconnu dans L’état de la Californie, qui
peuvent causer des défauts de naissance et le cancer .
(La sécurité de santé en Californie et la code sécurité
Sec. 25249.5 et seq.)
CHOC ELECTRIQUE
• Prenez des soins particuliers lorsque la zone de travail est humide ou moite.
• Montez et maintenez le matériel conformément au
Code électrique national des Etats-Unis. (V oir la page
5, article 9.)
• Débranchez l’alimentation électrique avant tout travail d’entretien ou de réparation.
• Lisez et respectez toutes les consignes du Manuel de
consignes.
INCENDIE ET EXPLOSION
Les incendies et les explosions peuvent résulter des scories
chaudes, des étincelles ou de l’arc de plasma. Le procédé
à l’arc de plasma produit du métal, des étincelles, des
scories chaudes pouvant mettre le feu aux matières combustibles ou provoquer l’explosion de fumées
inflammables.
• Soyez certain qu’aucune matière combustible ou inflammable ne se trouve sur le lieu de travail. Protégez
toute telle matière qu’il est impossible de retirer de la
zone de travail.
• Procurez une bonne aération de toutes les fumées
inflammables ou explosives.
• Ne coupez pas et ne soudez pas les conteneurs ayant
pu renfermer des matières combustibles.
• Prévoyez une veille d’incendie lors de tout travail dans
une zone présentant des dangers d’incendie.
• Le gas hydrogène peut se former ou s’accumuler sous
les pièces de travail en aluminium lorsqu’elles sont
coupées sous l’eau ou sur une table d’eau. NE PAS
couper les alliages en aluminium sous l’eau ou sur
une table d’eau à moins que le gas hydrogène peut
s’échapper ou se dissiper . Le gas hydrogène accumulé
explosera si enflammé.
Les chocs électriques peuvent blesser ou même tuer. Le
procédé au jet de plasma requiert et produit de l’éner gie
électrique haute tension. Cette énergie électrique peut
produire des chocs graves, voire mortels, pour l’opérateur
et les autres personnes sur le lieu de travail.
GENERAL INFORMATION iv Date: Nov ember 15, 2001
Les rayons provenant de l’arc de plasma peuvent blesser
vos yeux et brûler votre peau. Le procédé à l’arc de
plasma produit une lumière infra-rouge et des rayons
RAYONS D’ARC DE PLASMA
ultra-violets très forts. Ces rayons d’arc nuiront à vos
yeux et brûleront votre peau si vous ne vous protégez
pas correctement.
• Pour protéger vos yeux, portez toujours un casque ou
un écran de soudeur . Portez toujours des lunettes de
sécurité munies de parois latérales ou des lunettes de
protection ou une autre sorte de protection oculair e.
• Portez des gants de soudeur et un vêtement protecteur
approprié pour protéger votre peau contre les
étincelles et les rayons de l’arc.
• Maintenez votre casque et vos lunettes de protection
en bon état. Remplacez toute lentille sale ou
comportant fissure ou rognure.
• Protégez les autres personnes se trouvant sur la zone
de travail contre les rayons de l’arc en fournissant des
cabines ou des écrans de protection.
• Utilisez la nuance de lentille qui est suggèrée dans le
recommendation qui suivent ANSI/ASC Z49.1:
Nuance Minimum Nuance Suggerée
Courant Arc Protective Numéro Numéro
Moins de 300* 8 9
300 - 400* 9 12
400 - 800* 10 14
* Ces valeurs s’appliquent ou l’arc actuel est observé
clairement. L ’experience a démontrer que les filtres
moins foncés peuvent être utilisés quand l’arc est
caché par moiceau de travail.
1.06 Documents De Reference
Consultez les normes suivantes ou les révisions les plus
récentes ayant été faites à celles-ci pour de plus amples
renseignements :
1. OSHA, NORMES DE SÉCURITÉ DU TRA VAIL ET DE
PROTECTION DE LA SANTÉ, 29CFR 1910,
disponible auprès du Superintendent of Documents,
U.S. Government Printing Office, Washington, D.C.
20402
2. Norme ANSI Z49.1, LA SÉCURITÉ DES
OPÉRATIONS DE COUPE ET DE SOUDAGE,
disponible auprès de la Société Américaine de
Soudage (American Welding Society), 550 N.W.
LeJeune Rd., Miami, FL 33126
3. NIOSH, LA SÉCURITÉ ET LA SANTÉ LORS DES
OPÉRATIONS DE COUPE ET DE SOUDAGE À
L’ARC ET AU GAZ, disponible auprès du Superintendent of Documents, U.S. Government Printing
Office, Washington, D.C. 20402
4. Norme ANSI Z87.1, PRATIQUES SURES POUR LA
PROTECTION DES YEUX ET DU VISAGE AU TRAV AIL ET DANS LES ECOLES, disponible de l’Institut
Américain des Normes Nationales (American National Standards Institute), 1430 Broadway, New Y ork,
NY 10018
5. Norme ANSI Z41.1, NORMES POUR LES
CHAUSSURES PROTECTRICES, disponible auprès
de l’American National Standards Institute, 1430
Broadway, New York, NY 10018
BRUIT
Le bruit peut provoquer une perte permanente de l’ouïe.
Les procédés de soudage à l’arc de plasma peuvent
provoquer des niveaux sonores supérieurs aux limites
normalement acceptables. V ous dú4ez vous pr otéger les
oreilles contre les bruits forts afin d’éviter une perte
permanente de l’ouïe.
• Pour protéger votre ouïe contre les bruits forts, portez
des tampons protecteurs et/ou des protections
auriculaires. Protégez également les autres personnes
se trouvant sur le lieu de travail.
• Il faut mesurer les niveaux sonores afin d’assurer que
les décibels (le bruit) ne dépassent pas les niveaux
sûrs.
• Pour des renseignements sur la manière de tester le
bruit, consultez l’article 1, page 5.
6. Norme ANSI Z49.2, PRÉVENTION DES INCENDIES
LORS DE L ’EMPLOI DE PROCÉDÉS DE COUPE ET
DE SOUDAGE, disponible auprès de l’American National Standards Institute, 1430 Broadway, New Y ork,
NY 10018
7. Norme A6.0 de l’Association Américaine du Soudage
(AWS), LE SOUDAGE ET LA COUPE DE
CONTENEURS A YANT RENFERMÉ DES PRODUITS
COMBUSTIBLES, disponible auprès de la American
Welding Society, 550 N.W. LeJeune Rd., Miami, FL
33126
8. Norme 51 de l’Association Américaine pour la Protection contre les Incendies (NFPA), LES SYSTEMES
À GAZ AVEC ALIMENTATION EN OXYGENE
POUR LE SOUDAGE, LA COUPE ET LES
PROCÉDÉS ASSOCIÉS, disponible auprès de la National Fire Protection Association, Batterymar ch Park,
Quincy, MA 02269
Date: No v ember 15, 2001 v GENERAL INFORMATION
9. Norme 70 de la NFPA, CODE ELECTRIQUE NATIONAL, disponible auprès de la National Fire Protection Association, Batterymarch Park, Quincy, MA
02269
10. Norme 51B de la NFPA, LES PROCÉDÉS DE
COUPE ET DE SOUDAGE, disponible auprès de la
National Fire Protection Association, Batterymarch
Park, Quincy, MA 02269
11. Brochure GCA P-1, LA MANIPULATION SANS
RISQUE DES GAZ COMPRIMÉS EN CYLINDRES,
disponible auprès de l’Association des Gaz
Comprimés (Compressed Gas Association), 1235
Jefferson Davis Highway, Suite 501, Arlington, VA
22202
12. Norme CSA W117.2, CODE DE SÉCURITÉ POUR
LE SOUDAGE ET LA COUPE, disponible auprès
de l’Association des Normes Canadiennes, Standards Sales, 178 Rexdale Boulevard, Rexdale,
Ontario, Canada, M9W 1R3
13. Livret NWSA, BIBLIOGRAPHIE SUR LA
SÉCURITÉ DU SOUDAGE, disponible auprès de
l’Association Nationale de Fournitures de Soudage
(National Welding Supply Association), 1900 Arch
Street, Philadelphia, PA 19103
14. Norme AWSF4.1 de l’Association Américaine de
Soudage, RECOMMANDATIONS DE PRATIQUES
SURES POUR LA PRÉPARA TION À LA COUPE ET
AU SOUDAGE DE CONTENEURS ET TUYAUX
AYANT RENFERMÉ DES PRODUITS
DANGEREUX , disponible auprès de la American
Welding Society, 550 N.W. LeJeune Rd., Miami, FL
33126
15. Norme ANSI Z88.2, PRA TIQUES DE PROTECTION
RESPIRATOIRE, disponible auprès de l’American
National Standards Institute, 1430 Broadway, New
York, NY 10018
GENERAL INFORMATION vi Date: Nov ember 15, 2001
1.07 Declaration of Conformity
Manufacturer: Thermal Dynamics Corporation
Address: 82 Benning Street
W est Lebanon, New Hampshire 03784
USA
The equipment described in this manual conforms to all applicable aspects and regulations of the ‘Low Voltage Directive’
(European Council Directive 73/23/EEC as amended by Council Directive 93/68/EEC) and to the National legislation for
the enforcement of this Directive.
Serial numbers are unique with each individual piece of equipment and details description, parts used to manufacture a unit
and date of manufacture.
National Standard and Technical Specifications
The product is designed and manufactured to a number of standards and technical r equirements. Among them are:
* CSA (Canadian Standards Association) standard C22.2 number 60 for Arc welding equipment.
* UL (Underwriters Laboratory) rating 94VO flammability testing for all printed-circuit boar ds used.
* ISO/IEC 60974-1 (BS 638-PT10) (EN 60 974-1) (EN50192) (EN50078) applicable to plasma cutting equipment and associ-
ated accessories.
* Extensive product design verification is conducted at the manufacturing facility as part of the routine design and manufac-
turing process. This is to ensure the product is safe, when used according to instructions in this manual and related
industry standards, and performs as specified. Rigorous testing is incorporated into the manufacturing process to ensure
the manufactured product meets or exceeds all design specifications.
Thermal Dynamics has been manufacturing products for more than 30 years, and will continue to achieve excellence in our
area of manufacture.
Manufacturers responsible repr esentative: Giorgio Bassi
Managing Director
Thermal Dynamics Europe
Via rio Fabbiani 8A
40067 Rastignano (BO)
Italy
Date: No v ember 15, 2001 vii GENERAL INFORMATION
1.08 Statement of Warranty
LIMITED WARRANTY: Thermal Dynamics® Corporation (hereinafter “Thermal”) warrants that its products will be free of defects in
workmanship or material. Should any failure to conform to this warranty appear within the time period applicable to the Thermal
products as stated below , Thermal shall, upon notification thereof and substantiation that the product has been stor ed, installed, operated,
and maintained in accordance with Thermal’s specifications, instructions, recommendations and recognized standard industry practice,
and not subject to misuse, repair , neglect, alteration, or accident, corr ect such defects by suitable r epair or replacement, at Thermal’s sole
option, of any components or parts of the product determined by Thermal to be defective.
THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PAR TICULAR PURPOSE.
LIMITATION OF LIABILITY: Thermal shall not under any circumstances be liable for special or consequential damages, such as, but
not limited to, damage or loss of purchased or replacement goods, or claims of customers of distributor (hereinafter “Purchaser”) for
service interruption. The remedies of the Purchaser set forth herein are exclusive and the liability of Thermal with respect to any
contract, or anything done in connection therewith such as the performance or breach thereof, or from the manufacture, sale, delivery,
resale, or use of any goods covered by or furnished by Thermal whether arising out of contract, negligence, strict tort, or under any
warranty, or otherwise, shall not, except as expressly provided herein, exceed the price of the goods upon which such liability is based.
THIS WARRANTY BECOMES INVALID IF REPLACEMENT PARTS OR ACCESSORIES ARE USED WHICH MAY IMPAIR THE
SAFETY OR PERFORMANCE OF ANY THERMAL PRODUCT.
THIS WARRANTY IS INVALID IF THE PRODUCT IS SOLD BY NON-AUTHORIZED PERSONS.
The limited warranty periods for Thermal products shall be as follows (with the exception of XL Plus Series, CutMaster Series , Cougar
and DRAG-GUN): A maximum of three (3) years from date of sale to an authorized distributor and a maximum of two (2) years from
date of sale by such distributor to the Purchaser, and with the further limitations on such two (2) year period (see chart below).
The limited warranty period for XL Plus Series and CutMaster Series shall be as follows: A maximum of four (4) years from date
of sale to an authorized distributor and a maximum of three (3) years from date of sale by such distributor to the Purchaser, and
with the further limitations on such three (3) year period (see chart below).
The limited warranty period for Cougar and DRAG-GUN shall be as follows: A maximum of two (2) years from date of sale to an
authorized distributor and a maximum of one (1) year from date of sale by such distributor to the Purchaser, and with the further
limitations on such two (2) year period (see chart below).
Parts
XL Plus & Parts Parts
PAK Units, Power Supplies CutMaster Series Cougar/Drag-Gun All Others Labor
Main Power Magnetics 3 Years 1 Year 2 Years 1 Year
Original Main Power Rectifier 3 Years 1 Year 2 Years 1 Year
Control PC Board 3 Years 1 Year 2 Years 1 Year
All Other Circuits And Components Including, 1 Year 1 Year 1 Year 1 Year
But Not Limited To, Starting Circuit,
Contactors, Relays, Solenoids, Pumps,
Power Switching Semi-Conductors
Consoles, Control Equipment, Heat 1 Year 1 Year 1 Year
Exchanges, And Accessory Equipment
Torch And Leads
Maximizer 300 Torch 1 Year 1 Year
SureLok Torches 1 Year 1 Year 1 Year
All Other Torches 180 Days 180 Days 180 Days 180 Days
Repair/Replacement Parts 90 Days 90 Days 90 Days None
Warranty repairs or replacement claims under this limited warranty must be submitted by an authorized Thermal Dynamics® repair
facility within thirty (30) days of the repair. No transportation costs of any kind will be paid under this warranty. Transportation
charges to send products to an authorized warranty repair facility shall be the responsibility of the customer. All returned goods shall
be at the customer’s risk and expense. This warranty supersedes all previous Thermal warranties.
Effective: November 15, 2001
GENERAL INFORMATION viii Date: Nov ember 15, 2001
SPECIFICATIONS
1.1. DESCRIPTION OF EQUIPMENT
The Thermal Arc 2A Plasma Welding T orch is designed
for direct current plasma arc welding of ferrous and
non-ferrous metals, including aluminum, using the
transferred arc plasma process. It is used as part of a
welding system that includes a control console, a direct current power source, a coolant supply and a gas
supply (Figure 1-A).
Coolant Recirculator
Primary Power
1.2. SPECIFICATIONS
• Straight Polarity Current Rating: 75 amperes DC
maximum.
• Plasma Gas: Argon (Consumption: 0.5-2.5 SCFH
(0.24-1.18 1pm).
• Shield Gas Straight Polarity: Argon or Argon/
Hydrogen (Consumption: 8-15 SCFH (3.8-7.1
1pm).
• Shipping Weight: Hand torch: PWH-2A- 1 lbs.
(0.45 kg); machine mounted torch PWM-2A – 2
lbs. (0.9 kg).
• Cooling Requirements: 2,000 BTU/hr; 114 gpm
of TDC Torch Coolant @ 50 psi.
Plasma Gas
D.C. Power Supply
Power Supply Control
Shield Gas
Torch
Plasma Welding Console Control Switch
Work
Figure 1-A Plasma Welding System
Specifications 1-1 Manual 0-2005
C
B
D
A
A
C
B
D
ABCD
Inches cm Inches cm Inches cm Inches cm
PWH-2A (70°) 8.00 20.32 1.62 4.11 0.62 1.57 0.88 2.24
PWH-2A (90°) 7.75 19.68 1.62 4.11 0.62 1.57 0.88 2.24
PWM-2A 18.00 45.72 0.81 2.06 7.12 18.08 1.38 3.50
15.00 38.10
PWH/M-2A Torch Dimensions
Specifications 1-2 Manual 0-2005
1.3. THERMAL ARC PLASMA
1.4. THEORY OF OPERATION
Plasma is a gas which has been heated to an extremely
high temperature and ionized so that the gas becomes
electrically conductive. The welding process uses this
plasma to transfer an electric arc to the workpiece. The
metal to be welded is melted by the heat of the arc.
In a plasma torch, a cool gas such as Argon enters in
Zone A, Figure 1-C. In Zone B a pilot arc between the
electrode and the front of the torch heats and ionizes
the gas. An arc transfers to the workpiece through a
column of plasma gas in Zone C.
POWER
SUPPLY
A
B
C
Workpiece
TORCH CONNECTIONS
The plasma gas flows to the torch through the black
lead, around the electrode and gas distributor and out
through the tip orifice.
The shield gas flows through the yellow torch lead,
around the torch front end and out through the shield
cup.
The torch coolant and negative (-) power flow to the
front end of the torch through the green (color coded)
lead.
The coolant return and positive (+) power for the pilot
arc flow through the r ed (color coded) lead.
PILOT ARC
When the torch is started, an arc is established between
the electrode and welding tip. This pilot arc appears as
a small “flame” at the front of the torch. This serves to
illuminate the workpiece and assists in starting the main
(welding) arc. It can also be left on while welding at
low current levels to stabilize the welding arc.
HIGH FREQUENCY
A high voltage, high fr equency current is superimposed
on the direct current to establish the pilot arc.
WELDING ARC
Figure 1-C Thermal Arc Plasma
By forcing the plasma gas and electric arc through a
small orifice, Thermal Arc torches deliver a high concentration of heat to a very small area. The stiff, constricted plasma arc is shown in Zone C. Direct current
straight polarity is used for most plasma welding, as
shown in the illustration.
The Dual-Flow design of Thermal Arc welding tor ches
uses a shield gas, shown by the small arrows. The shield
gas surrounds the plasma arc and channels it to the
workpiece, thus improving weld characteristics and
shielding the weld puddle from atmospheric contamination.
Coolant from the coolant recirculator flows through the
liquid-cooled power leads to the torch head and back.
The plasma arc is infinitely variable from soft to stiff.
Most applications can best be accomplished with a
softer arc, i.e. lower plasma gas flow. Full penetration
or Key-hole welds require a stiff arc, i.e. high plasma
gas flow.
The power supply provides the direct current (DC) for
welding. The negative output is connected to the torch
electrode through the negative liquid cooled lead. The
positive output is connected to the workpiece through
the work cable. The electrically charged plasma gas
serves to close this electrical circuit and thus becomes
the welding arc.
Specifications 1-3 Manual 0-2005
INSTALLATION
1
Figure 2-A
2.1. UNPACKING NEW EQUIPMENT
Unpack the equipment, check for possible damage during shipment. Check to be sure all items on the packing list are identified and accounted for.
WARNING
Check to be sure the main disconnect switch supplying power to the welding system is open.
2.2. HAND TORCH INSTALLATION (Figure 2-A)
2
3) Screw the handle onto the torch.
4) Slide the shrink tubing over the handle until
about 1/2 on. With a heat gun shrink the tubing
until it is snug on the handle and the leads (Fig.
2-B).
5) Connect the other end of the leads to the appropriate fittings on the plasma welding console.
Shrink 0n
Figure 2-B
3
2.3. MACHINE TORCH
INSTALLATION (Figure 2-C)
If the torch is not already attached to the leads, assemble as follows:
1) Remove the handle (Item 2) from the head assembly (Item 1).
2) Feed the end of the leads with the torch fittings
through the shrink tubing (Item 3) and then the
handle (Item 2) and connect to the torch (Item
1), matching the color coded lead to the color
coded torch fitting. Do not overtighten.
1
2
Figure 2-C
If the torch is not already attached to the leads, assemble
as follows:
1) Loosen the nut (Item 2) and remove the positioning tube assembly (Item 4).
2) Unscrew the sleeve adaptor (Item 3).
3
4
Installation 2-1 Manual 0-2005
3) Feed the end of the leads with the torch fittings
through Items 4, 3 and 2 connect to the torch,
matching the color coded lead to the color coded
torch fitting. Do not overtighten.
4) Pass the sleeve adaptor through the nut and
screw onto the torch.
5) Slide the positioning tube onto the sleeve adaptor and secure with the nut (Item 2).
6) Connect the other end of the leads to the appropriate fittings on the plasma welding console.
Check the instructions for the other components of the
welding system to insure they are installed properly.
Installation 2-2 Manual 0-2005
OPERATION
This procedure should be followed at the beginning of
each shift:
3.1. PRE-OPERATION SET-UP
The selection of specific parameters for a given welding application depend on the type of material, configuration of the joint and type of weld desired. Proper
settings for a given joint have to be developed on the
job.
Table 3-A gives the maximum operating range of the
various tips. These values are for a stiff collimated arc
with the electrode setback at its maximum. A softer,
less constricted arc can be obtained by decreasing the
electrode setback (see Fig. 3-A). The minimum setback
is with the electrode point flush with the face of the tip
(see Fig. 3-B). By decreasing the electrode setback the
plasma gas flow can be decreased while maintaining
the higher current ratings of the tip. This gives a wider
weld bead and in most cases allows for faster travel
speeds.
WARNING
Check to be sure the main disconnect switch is
open.
1) Check the torch to be sure that it has the proper
components (see Section 4.1) and is adjusted
properly (see Table 3-A).
2) Close the main disconnect switch supplying
power to the welding system.
Min Setback
Max Setback
Figure 3-A
The electrode gauge values given in Table 3-A will result in maximum electrode setback for the given tip.
This setback, when used with the given values for current and plasma gas flow will produce a stiff collimated
arc that results in a narrower weld bead.
CAUTION
Decreasing the electrode standoff can only be
done with tip orifice diameters of 0.046 or larger .
Figure 3-B
When the electrode is at minimum setback (flush with
tip face) the plasma gas flow rate can be reduced below the levels given in T able 3-A while maintaining the
given current levels. This produces a softer ar c that results in less depth of penetration, giving a wider weld
bead, and allowing faster travel speeds.
Operation 3-1 Manual 0-2005
Table 3-A Suggested Starting Parameters for Manual Fusion Welding - Thermal Arc 2A Torch
s
aterial/Thicknes
Inch mm Cat. No.
Stainless Steel
0.005 0.13 8-2077 0.014 8-2044 8-2046 4 3-5 0.25-0.5 0.12-0.24
0.010 0.25 8-2080 0.046 8-2044 8-2046 4 4-10 0.25-0.5 0.12-0.24
0.020 0.051 8-2082 0.062 8-2044 8-2046 4 10-15 0.25-0.5 0.12-0.24
1/32 0.80 8-2083 0.081 8-2044 8-2046 4 20-25 0.4-0.5 0.19-0.24
1/16 1.6 8-2023 0.046 8-2033 0 30-35 0.6-0.7 0.28-0.33
Tip Electrode
Orifice
Dia.
(inch)
8-2078 0.022 8-2044 8-2046 4 3-5 0.25-0.5 0.12-0.24
8-2079 0.031 8-2044 8-2046 4 3-5 0.25-0.5 0.12-0.24
8-2024 0.062 8-2033 0 10-15 0.25-0.5 0.12-0.24
8-2023 0.046 8-2033 0 20-30 0.4-0.6 0.19-0.28
8-2024 0.062 8-2033 0 30-45 0.6-0.9 0.28-0.42
Cat alog Num b er
Std. Ext. SCFH lpm
8-2033 4 0.19-0.24
Gauge*
Current Range
(Amps)
Plasma Gas
(Argon) Flow
Shield Gas
8-15 SCFH
(3.8-7.1 lpm)
Ar(95%)/H
or Argon
(5%)
2
3/32 2.4 8-2024 0.062 8-2033 0 45-55 0.9-1.1 0.42-0.52
8-2025 0.081 8-2033 0 45-60 0.9-1.2 0.47-0.57
1/8 3.2 8-2025 0.081 8-2033 0 60-75 1.2-1.5 0.57-0.71
Carbon Steel
0.050 1.3 8-2023 0.046 8-2033 0 25-35 0.5-0.7 0.24-0.33
8-2024 0.062 8-2033 0 25-40 0.5-0.8 0.24-0.38
1/16 1.6 8-2024 0.062 8-2033 0 30-50 0.6-1.0 0.28-0.47
3/32 2.4 8-2025 0.081 8-2033 0 60-75 0.9-1.4 0.42-0.66
Titani um
0.010 0.25 8-2080 0.046 8-2044 8-2046 4 4-8 0.25-0.5 0.12-0.24
0.020 0.51 8-2082 0.062 8-2044 8-2046 4 10-15 0.25-0.5 0.12-0.24
8-2024 0.062 8-2033 0 10-15 0.25-0.5 0.12-0.24
8-2023 0.081 8-2044 8-2046 4 10-15 0.25-0.5 0.12-0.24
Ar(95%)/H
or Argon
* Gauge settings are identified by the number of rings on the gauge and are for maximum elec-
trode setback. See Torch Assembly, step 4 for proper adjustment procedure.
Argon
(5%)
2
NOTE: This information represents our best judgement but Thermal Dynamics Corporation assumes no
liability for its use. The parameters listed above may be varied to optimize performance.
Operation 3-2 Manual 0-2005
3) Turn the system on.
4) Set the gas supply pressure regulator at 30 psig.
Adjust the gas flow rates as required (see Table
3-A).
5) Purge for approximately 3 minutes by letting
the plasma gas run. This will remove any condensation of moisture that may have accumulated in the torch while it was shut down.
NOTE
3.3. MACHINE TORCH OPERATION
1) Locate the torch at the required starting position for the weld. Adjust the height as requir ed.
2) Activate control switch.
3) Rate of travel of the torch will depend on the
material and type of weld. This will have to be
determined by the operator.
Only the plasma gas line needs to be purged.
6) Select the welding mode.
7) Set the current to the selected amperage level.
The torch is now ready for operation.
W ARNING
Read and understand the precautions listed in
the front of this manual. Be sure the operator is
equipped with proper gloves, clothing and eye
protection and that proper ventilation is provided.
3.2. HAND TORCH OPERATION
1) Pick up the torch and set the welding system to
the operating mode.
CAUTION
4) After the weld is completed, deactivate the control switch.
5) Put the welding system in the standby mode
(post purge).
6) W ait 5 minutes before shutting the system down
to allow the torch to cool.
The pilot arc is established at this time. Be careful of the direction the torch tip is pointed in so
as not to get burned.
2.) Lower the welding helmet and position the
torch at the beginning of the weld zone. The
light from the pilot arc will help to find this
position. Hold the torch approximately 3/16
inch from the workpiece and activate the control switch. When the welding arc transfers,
adjust the torch standoff and amperage until the
desired penetration is achieved. Move the torch
along the line of weld at a speed to coincide
with the weld puddle to achieve the desired
weld quality.
3) Deactivate the control switch.
4) Switch the welding system to the standby mode
(post purge).
5) W ait 5 minutes before shutting the system down
to allow the torch to cool.
Operation 3-3 Manual 0-2005
SERVICE
3
9
5
4
1
2
6
7
8
10
The Service Section is divided into two parts:
C) Lubricate O-ring with a light coating of Cat. No.
8-4025 O-ring lubricant. This should be used
sparingly, just enough to make the O-ring slippery , but not enough to accumulate in the torch.
4.1. Torch Maintenance
4.2. Torch Leads
4.1. T ORCH MAINTENANCE
W ARNING
Check to be sure the main disconnect to the welding system is open before disassembling the torch.
Torch Disassembly and Inspection
CAUTION
The electrode cap has an O-ring seal to prevent
gas leakage. It is important to observe the following precautions for the 0-ring:
A) Make sure that the groove and the surface that
the O-ring will seal against are clean and free
of nicks and scratches.
Disassemble the torch as follows:
1) Unscrew the ceramic shield cup (1).
CAUTION
Hold the torch with the tip end up to prevent the
gas distributor from falling out and breaking.
2) Using the wrench (10), unscrew the tip (2).
3) Unscrew the electrode cap (9) while still holding torch tip end up. Slowly lower the cap until
the collet (7), and the electrode (8) can be
grasped with fingers. The gas distributor (3) will
come out with the electrode and collet.
Torch Assembly
WARNING
Primary power to the welding system must be
disconnected before assembling the torch.
B) Check to see that the O-ring is not cut or cracked.
1) Insert the electrode (8) in the collet (7) and then
this assembly into the rear of the torch head (5).
Hold in place with finger .
Figure 4-A Torch Parts Explosion
1. Shield Cup
2. Tip
3. Gas Distributor
4. Gasket
5. Basic Head Assembly
6. O-ring
7. Collet
8. Electrode
9. Electrode Cap
10. Wrench & Gage Assembly
Service 4-1 Manual 0-2005
2) Turn the torch upside down and slide the gas
distributor (3), (end with holes in last), into the
torch.
CAUTION
Care must be taken to insure that the gas distributor (3) is installed in the correct direction.
3) Screw the electrode cap (9) on firmly then back
off a couple of turns so that the electrode (8)
can be adjusted.
Turn on the plasma gas and watch the gas stream for
possible signs of moisture in the stream befor e operating. Do not attempt to operate the torch until the source
of the moisture has been identified and corrected.
4.2. TORCH LEADS REPLACEMENT
Hand T orch
1) Cut off the shrink-on tubing that is at the end of
the handle and leads sleeving.
4) Select the proper gauge on the gauge and
wrench (10) assembly. The electrode (8) must
contact the gauge to be properly adjusted (Fig.
4-B). Insert the gauge into the front of the torch
and press until the shoulder of the gauge contacts the torch anode (Step 2, Fig. 4-B). T ighten
the electrode cap (9) securely while holding
pressure against the gauge.
5) Install the welding tip (2) and tighten gently
with the tip wrench (10).
6) Stretch the gasket (4) over the front end of the
torch and position against the torch body.
7) Screw on shield cup (1).
The torch is now assembled and ready to be checked
for possible leakage before operating. T urn on the torc h
coolant recirculator and observe the tip and orifice of
the torch for possible sign of moisture.
2) Unscrew the handle from the torch.
3) Disconnect the four hoses from the torch.
4) Remove the handle from the old leads and insert on new leads.
5) Connect the new leads to the torch making sure
the color coded leads mate with their color
coded torch fittings. Do not over-tighten.
6) Screw the handle back onto the torch.
7) Slide the new shrink-on tubing over the handle
until 1/2 of it is on the handle. Shrink the tubing with heat (not flame) until it is firm around
the handle and sleeving.
Gauge ring ident.
Initial gap
Step 1 Step 2
Gauge seated
Figure 4-B Gaging Electrode
Service 4-2 Manual 0-2005
Machine Mounted Torch
1) Unscrew the nut holding the positioning tube
to the torch assembly . Slide the positioning tube
back away from the torch.
2) Unscrew the sleeve adaptor from the torch. Slide
up the leads until the torch fittings are accessible.
3) Disconnect the four hoses from the torch.
4) Remove the nut, sleeve adaptor and positioning tube from the old leads and install on the
new leads at the torch end in the same order as
they were on the old leads.
5) Connect the new leads to the torch making sure
the color-coded leads mate with the color-coded
torch fittings. Do not overtighten.
6) Screw the sleeve adaptor back onto the torch.
7) Slide the positioning tube over the sleeve adaptor and secure with the nut.
5) Use the same crimping tool to crimp the wire
stop in the slot out of the way . This is necessary
to insure proper coolant flow.
6) Remove the clamp from the wire lead and push
the hose over the glands onto the fitting.
7) Slide the ferrule onto the hose and fitting until
it rests over the glands. Crimp using a 5/16 diameter crimping die, Scovill No. 46 or equivalent.
Positive and Negative Leads (Console End)
1) To replace the fittings on the console end, cut
the hose (only) just behind the ferrule. Grip the
fitting and slide the hose back 4 to 6 inches.
Clamp the wire lead at the end of the hose to
prevent the hose from sliding back down over
the fitting. Cut the old fitting off where the wire
lead goes in.
2) Slide the new ferrule onto the wire lead and then
the nut (in the right direction).
4.3 TORCH LEADS REPAIR
W ARNING
Power to the system must be turned off.
If repair is needed to the console end of the leads, then
disconnect at the console. T o repair the leads at the tor ch
end, disconnect as in the preceding steps according to
the type of torch being used, then proceed as follows:
Positive and Negative Leads (Torch End)
1) To replace the fittings at the torch end, cut the
hose (only) just behind the ferrule. Grip the fitting and slide the hose back 4 to 6 inches. Clamp
the wire lead at the end of the hose to prevent
the hose from sliding back down over the fitting. Cut the old fitting off where the wire lead
goes in.
2) Slide the new ferrule onto the wire lead.
3) Insert the wire lead into the small end of the
new fitting up to but not beyond the stop.
4) Crimp the wire lead into place with a 16-14
AWG crimping tool. It is important to crimp
the whole length of the solid diameter from the
slot to the end.
5) Use the same crimping tool to crimp the wire
stop in the slot out of the way . This is necessary
to insure proper coolant flow.
6) Slide the nut onto the fitting.
7) Remove the clamp from the wire lead and push
the hose over the glands, onto the fitting.
8) Slide the ferrule onto the hose and fitting until
it rests over the glands. Crimp using a 7/16 diameter crimping die, Scovill No. 46 or equivalent.
3) Insert the wire lead into the small end of the
new fitting up to but not beyond the stop.
4) Crimp the wire lead into place with a 16-14
A WG crimping tool. It is important to crimp the
whole length of the solid diameter from the slot
to the end.
Service 4-4 Manual 0-2005
Cut hose here
Cut hose here
Cut here
Insert wire to here.
Crimp here first.
Crimp here last.
Push hose on fitting past this gland.
Pull hose back approx. 4" to 6"
and clamp here.
After crimping release clamps.
Pull hose back approx. 4" to 6"
and clamp.
After crimping release clamps.
Push hose up against shoulder of ferrule.
Cut here.
Insert wire to here.
Crimp here first.
Crimp here last.
Crimp ferrule.
TORCH END
Crimp ferrule.
CONSOLE END
Figure 4-C Leads Fitting Replacement
Service 4-5 Manual 0-2005
Cut hose here
Cut hose here
Push hose on fitting approx. 3/4".
3/4"
Crimp ferrule.
TORCH END
Gas Hoses (Torch End)
Push hose up against shoulder of ferrule.
Crimp ferrule.
CONSOLE END
Figure 4-D Gas Fitting Replacement
1) Cut the gas hose just behind the ferrule.
2) Assemble the nut (threaded end first) over the
fitting.
3) Slide the new ferrule over the hose and then
slide the hose onto the fitting until it is approximately 1/4” past the last gland on the fitting.
4) Slide the ferrule over the hose and fitting until
it rests over the glands. Crimp in place using a
1/4" diameter crimping die, Scovill No. 47 or
equivalent.
Gas Hoses (Console End)
Follow Steps 1 through 3 for the torch end.
4) Slide the ferrule over the hose and fitting until
it rests over the glands. Crimp in place using a
5/16" diameter crimping die, Scovill No. 46 or
equivalent.
Service 4-6 Manual 0-2005
PARTS LIST
5.1. GENERAL ARRANGEMENT
Assembly Parts List
The Assembly Parts List consists of illustrated parts lists
of the following:
Figure 5-1. 2A Series Welding Torch
Figure 5-2. 2A Torch Assembly
Figure 5-3. 2A Torch Leads Assembly
An item number in parentheses indicates the item is
located behind the item pointed to. An asterisk beside
the item number indicates the part is a main assembly,
not a component. Parts listed without item numbers
are not illustrated, but may be ordered by the catalog
number shown.
ORDERING INFORMA TION
When ordering replacement parts, order by catalog
number and complete description of the part or assembly, as given in the description column of the Assembly Parts List. Address all inquiries to your authorized
Thermal Dynamics distributor .
RETURNS
If a Thermal Dynamics' product must be returned for
service, contact your Thermal Arc distributor. Material
returned to Thermal Dynamics without proper authorization will not be accepted.
Parts List 5-1 Manual 0-2005
1
10
2
3
4
7
5
8
Figure 5-1 2A Welding Torch
Fig. Item No. Qty. Catalog Number Description
5-1 1 1 8-2027 700 Torch Head Assembly
5-1 1 1 8-2028 900 Torch Head Assembly
5-1 1 9-5558 Handle Assembly (includes 2 & 10)
5-1 2 1 9-1757 Handle
5-1 3 1 8-1204 Shrink-on Tubing
5-1 4 1 8-2097 Machine Mounted Torch Head Assembly
5-1 5 1 8-4018 Nut
5-1 6 1 8-2063 Sleeve Adaptor
5-1 7 1 8-5005 Positioning Tube
5-1 8 1 7-2827 Pinion Assembly
5-1 9 1 8-4204 Bushing
5-1 10 1 9-5557 Handle Adapter
6
9
Parts List 5-2 Manual 0-2005
5
1
2
3
4
6
7
Figure 5-2 2A Torch Explosion
Fig. Item No. Qty. Catalog Number Description
5-2 1 1 8-2071 Shield Cup-Standar d Weight
5-2 2 1 Tip (Packaged in Lots of 10)
Standard: 8-2023 Tip - .046, 35 amp
8-2024 Tip - .062, 55 amp
8-2025 Tip - .081, 75 amp
5-2 3 1 8-2040 Gas Distributor-Straight Polarity
5-2 4 1 8-2036 Gasket-Shield Cup
5-2 5 Basic Head Assembly
5-2 6 1 8-2035 O-Ring
5-2 7 1 8-2039 Collet-Straight Polarity
5-2 8 1 8-2033 Electr ode-Straight Polarity
5-2 9 1 8-2032 Electrode Cap-Standard
5-2 10 1 8-2021 Gauge and Wrench Assembly
8
10
9
"MAX SHIELD" Parts:
5-2 1 1 8-2076 Shield Cup- w/Gas Lens
5-2 2 1 Tip (Packaged in Lots of 10)
Long: 8-2077 Tip - .014, 5 amp
8-2078 Tip - .022, 5 amp
8-2079 Tip - .031, 5 amp
8-2080 Tip - .046, 10 amp
8-2082 Tip - .062, 15 amp
8-2083 Tip - .081, 25 amp
5-2 3 1 8-2042 Gas Distributor (.040)
5-2 7 1 8-2041 Collet (.040)
5-2 8 1 8-2044 Electrode- Long Tip (.040)
5-2 1 8-2046 Extended Electrode- Long Tip (.040)
5-2 9 1 8-2030 Electr ode Cap-Extended
Parts List 5-3 Manual 0-2005
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2
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7
2
7
Figure 5-3 2A Torch Leads and Hose Fittings
Fig. Item No. Qty. Catalog Number Description
5-3 1 4-2539 2A Torch Leads - 12.5 ft.
5-3 1 4-2585 2A Torch Leads - 25 ft.
5-3 1 9-2105 Negative Torch Lead - 12.5 ft.
5-3 1 8-1494 Negative Torch Lead - 25 ft.
5-3 1 9-2107 Positive Torch Lead - 12.5 ft.
5-3 1 8-1495 Positive Torch Lead - 25 ft.
5-3 1 8-1074 Plasma Gas Hose - 12.5 ft.
5-3 1 8-1496 Plasma Gas Hose - 25 ft.
5-3 1 8-1075 Shield Gas Hose - 12.5 ft.
5-3 1 8-1497 Shield Gas Hose - 25 ft.
5-3 1 8-3138 Torch Leads Sleeving - 12.5 ft.
5-3 1 8-3139 Torch Leads Sleeving - 25 ft.
5-3 1 8-1204 Shrink-on Tubing
5-3 1 1 8-5012 Ferrule - Console End
5-3 2 1 8-5015 Nut - Console End (+ & -)
5-3 3 1 8-0328 Fitting, Console End
5-3 4 1 8-2064 Ferrule, Torch End
5-3 5 1 8-2061 Nut, Torch End
5-3 6 1 8-0335 Fitting, Torch End
5-3 7 1 8-3013 Ferrule - Both Ends
5-3 8 1 8-3034 Fitting - Console End (+ & -)
5-3 9 1 8-2069 Fitting - Torch End (+ & -)
5
8
6
9
Parts List 5-4 Manual 0-2005
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