Thermal Dynamics Plasma Welding Torch Model PWH/M-2A Manuel utilisateur

Catégorie
Système de soudage
Taper
Manuel utilisateur
Instruction Manual
Plasma Welding Torch
Model PWH/M-2A
April 19, 2002 Manual No. 0-2005
Plasma Welding Torch
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 per-
mission 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 #:________________________________________
WARNINGS
Read and understand this entire Manual and your employer’s safety practices before installing, oper-
ating, 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.
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 Warranty................................................................................... 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 TORCH INSTALLATION.............................................................. 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. TORCH 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
Date: November 15, 2001 i GENERAL INFORMATION
GENERAL INFORMATION
1.01 Notes, Cautions and Warnings
Throughout this manual, notes, cautions, and warnings
are used to highlight important information. These high-
lights are categorized as follows:
NOTE
An operation, procedure, or background informa-
tion which requires additional emphasis or is help-
ful 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 oper-
ating area.
1.02 Important Safety Precautions
WARNINGS
OPERATION AND MAINTENANCE OF
PLASMA ARC EQUIPMENT CAN BE DAN-
GEROUS 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. Per-
sons who work near plasma arc cutting applica-
tions should consult their medical health profes-
sional 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 in-
structions before using the equipment. Call 1-603-
298-5711 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 area.
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 processes. You must
be very careful when cutting or welding any met-
als which may contain one or more of the follow-
ing:
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 in-
formation 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 com-
bustible 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 de-
fects 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 op-
erator 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.
GENERAL INFORMATION ii Date: November 15, 2001
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, Publica-
tions.
Disconnect power source before performing any
service or repairs.
Read and follow all the instructions in the Operat-
ing 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 ma-
terial 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 where
fire hazards may exist.
Hydrogen gas may be formed and trapped under
aluminum workpieces when they are cut under-
water 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 dis-
sipated. Trapped hydrogen gas that is ignited will
cause an explosion.
NOISE
Noise can cause permanent hearing loss. Plasma arc pro-
cesses can cause noise levels to exceed safe limits. You
must protect your ears from loud noise to prevent per-
manent loss of hearing.
To protect your hearing from loud noise, wear pro-
tective ear plugs and/or ear muffs. Protect others
in the workplace.
Noise levels should be measured to be sure the deci-
bels (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
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 protected.
To protect your eyes, always wear a welding hel-
met or shield. Also always wear safety glasses with
side shields, goggles or other protective eye wear.
Wear welding gloves and suitable clothing to pro-
tect 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 work-
piece.
1.03 Publications
Refer to the following standards or their latest revisions
for more information:
1. OSHA, SAFETY AND HEALTH STANDARDS, 29CFR
1910, obtainable from the Superintendent of Docu-
ments, U.S. Government Printing Office, Washington,
D.C. 20402
2. ANSI Standard Z49.1, SAFETY IN WELDING AND
CUTTING, obtainable from the American Welding So-
ciety, 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. Govern-
ment Printing Office, Washington, D.C. 20402
4. ANSI Standard Z87.1, SAFE PRACTICES FOR OCCU-
PATION AND EDUCATIONAL EYE AND FACE PRO-
TECTION, obtainable from American National Stan-
dards Institute, 1430 Broadway, New York, NY 10018
5. ANSI Standard Z41.1, STANDARD FOR MEN’S
SAFETY-TOE FOOTWEAR, obtainable from the Ameri-
can National Standards Institute, 1430 Broadway, New
York, NY 10018
6. ANSI Standard Z49.2, FIRE PREVENTION IN THE
USE OF CUTTING AND WELDING PROCESSES, ob-
tainable from American National Standards Institute,
1430 Broadway, New York, NY 10018
Date: November 15, 2001 iii GENERAL INFORMATION
7. AWS Standard A6.0, WELDING AND CUTTING CON-
TAINERS WHICH HAVE HELD COMBUSTIBLES, ob-
tainable 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 PRO-
CESSES, 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 Associa-
tion, Batterymarch Park, Quincy, MA 02269
10. NFPA Standard 51B, CUTTING AND WELDING PRO-
CESSES, obtainable from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269
11. CGA Pamphlet P-1, SAFE HANDLING OF COM-
PRESSED 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 WELD-
ING 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 Associa-
tion, 1900 Arch Street, Philadelphia, PA 19103
14. American Welding Society Standard AWSF4.1, RECOM-
MENDED SAFE PRACTICES FOR THE PREPARA-
TION FOR WELDING AND CUTTING OF CONTAIN-
ERS AND PIPING THAT HAVE HELD HAZARDOUS
SUBSTANCES, obtainable from the American Welding
Society, 550 N.W. LeJeune Rd, Miami, FL 33126
15. ANSI Standard Z88.2, PRACTICE FOR RESPIRATORY
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 :
NOTE
Toute opération, procédure ou renseignement
général sur lequel il importe d’insister davantage
ou qui contribue à l’efficacité de fonctionnement
du système.
ATTENTION
Toute procédure pouvant résulter
l’endommagement du matériel en cas de non-
respect de la procédure 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.
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 person-
nel 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 votre distributeur
local si vous avez des questions.
FUMÉE et GAZ
La fumée et les gaz produits par le procédé de jet de
plasma peuvent présenter des risques et des dangers de
santé.
GENERAL INFORMATION iv Date: November 15, 2001
Eloignez toute fumée et gaz de votre zone de respira-
tion. 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.
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 différents
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 combus-
tibles 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
Les chocs électriques peuvent blesser ou même tuer. Le
procédé au jet de plasma requiert et produit de l’énergie
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.
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.
Prenez des soins particuliers lorsque la zone de tra-
vail est humide ou moite.
Montez et maintenez le matériel conformément au
Code électrique national des Etats-Unis. (Voir la page
5, article 9.)
Débranchez l’alimentation électrique avant tout tra-
vail 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 com-
bustibles ou provoquer l’explosion de fumées
inflammables.
Soyez certain qu’aucune matière combustible ou in-
flammable 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.
RAYONS D’ARC DE PLASMA
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
Date: November 15, 2001 v GENERAL INFORMATION
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 oculaire.
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.
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. Vous dú4ez vous protéger 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.
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 TRAVAIL 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 Superin-
tendent 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 TRA-
VAIL ET DANS LES ECOLES, disponible de l’Institut
Américain des Normes Nationales (American Na-
tional Standards Institute), 1430 Broadway, New York,
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
6. Norme ANSI Z49.2, PRÉVENTION DES INCENDIES
LORS DE L’EMPLOI DE PROCÉDÉS DE COUPE ET
DE SOUDAGE, disponible auprès de l’American Na-
tional Standards Institute, 1430 Broadway, New York,
NY 10018
7. Norme A6.0 de l’Association Américaine du Soudage
(AWS), LE SOUDAGE ET LA COUPE DE
CONTENEURS AYANT 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 Pro-
tection 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 Na-
tional Fire Protection Association, Batterymarch Park,
Quincy, MA 02269
GENERAL INFORMATION vi Date: November 15, 2001
9. Norme 70 de la NFPA, CODE ELECTRIQUE NA-
TIONAL, disponible auprès de la National Fire Pro-
tection 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, Stan-
dards 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 PRÉPARATION 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, PRATIQUES DE PROTECTION
RESPIRATOIRE, disponible auprès de l’American
National Standards Institute, 1430 Broadway, New
York, NY 10018
Date: November 15, 2001 vii GENERAL INFORMATION
1.07 Declaration of Conformity
Manufacturer: Thermal Dynamics Corporation
Address: 82 Benning Street
West 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 requirements. 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 boards 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 representative: Giorgio Bassi
Managing Director
Thermal Dynamics Europe
Via rio Fabbiani 8A
40067 Rastignano (BO)
Italy
GENERAL INFORMATION viii Date: November 15, 2001
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 stored, 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, correct such defects by suitable repair 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
PARTICULAR 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
Specifications 1-1 Manual 0-2005
SPECIFICATIONS
1.1. DESCRIPTION OF
EQUIPMENT
The Thermal Arc 2A Plasma Welding Torch 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 di-
rect current power source, a coolant supply and a gas
supply (Figure 1-A).
Figure 1-A Plasma Welding System
Primary Power
D.C. Power Supply
Power Supply Control
Torch
Work
Plasma Welding Console Control Switch
Plasma Gas
Shield Gas
Coolant Recirculator
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.
Specifications 1-2 Manual 0-2005
A
B
C
D
A
B
C
D
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
ABCD
PWH/M-2A Torch Dimensions
Specifications 1-3 Manual 0-2005
1.3. THERMAL ARC PLASMA
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
Workpiece
A
B
C
Figure 1-C Thermal Arc Plasma
By forcing the plasma gas and electric arc through a
small orifice, Thermal Arc torches deliver a high con-
centration of heat to a very small area. The stiff, con-
stricted 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 torches
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 contami-
nation.
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.
1.4. THEORY OF OPERATION
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 red (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 frequency current is superimposed
on the direct current to establish the pilot arc.
WELDING ARC
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.
Installation 2-1 Manual 0-2005
INSTALLATION
Figure 2-A
3
1
2
2.1. UNPACKING NEW
EQUIPMENT
Unpack the equipment, check for possible damage dur-
ing shipment. Check to be sure all items on the pack-
ing list are identified and accounted for.
WARNING
Check to be sure the main disconnect switch sup-
plying power to the welding system is open.
2.2. HAND TORCH INSTALLATION
(Figure 2-A)
If the torch is not already attached to the leads, as-
semble as follows:
1) Remove the handle (Item 2) from the head as-
sembly (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.
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 appro-
priate fittings on the plasma welding console.
Shrink 0n
Figure 2-B
2.3. MACHINE TORCH
INSTALLATION (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 posi-
tioning tube assembly (Item 4).
2) Unscrew the sleeve adaptor (Item 3).
Figure 2-C
1
2
3
4
Installation 2-2 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 adap-
tor and secure with the nut (Item 2).
6) Connect the other end of the leads to the ap-
propriate fittings on the plasma welding con-
sole.
Check the instructions for the other components of the
welding system to insure they are installed properly.
Operation 3-1 Manual 0-2005
OPERATION
3.1. PRE-OPERATION SET-UP
The selection of specific parameters for a given weld-
ing application depend on the type of material, con-
figuration 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.
Max Setback
Figure 3-A
The electrode gauge values given in Table 3-A will re-
sult in maximum electrode setback for the given tip.
This setback, when used with the given values for cur-
rent 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.
This procedure should be followed at the beginning of
each shift:
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
Figure 3-B
When the electrode is at minimum setback (flush with
tip face) the plasma gas flow rate can be reduced be-
low the levels given in Table 3-A while maintaining the
given current levels. This produces a softer arc that re-
sults in less depth of penetration, giving a wider weld
bead, and allowing faster travel speeds.
Operation 3-2 Manual 0-2005
Table 3-A Suggested Starting Parameters for Manual Fusion Welding - Thermal Arc 2A Torch
Std. Ext. SCFH lpm
0.005 0.13 8-2077 0.014 8-2044 8-2046 4 3-5 0.25-0.5 0.12-0.24
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
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
8-2024 0.062 8-2033 0 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
8-2033 4 0.19-0.24
8-2023 0.046 8-2033 0 20-30 0.4-0.6 0.19-0.28
1/16 1.6 8-2023 0.046 8-2033 0 30-35 0.6-0.7 0.28-0.33
8-2024 0.062 8-2033 0 30-45 0.6-0.9 0.28-0.42
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
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
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
Carbon Steel
Ar(95%)/H
2
(5%)
or Argon
Titanium
Argon
Inch mm Cat. No.
Orifice
Dia.
(inch)
M
aterial/Thicknes
s
Tip Electrode
Ar(95%)/H
2
(5%)
or Argon
Catalog Number
Shield Gas
8-15 SCFH
(3.8-7.1 lpm)
Stainless Steel
Current Range
(Amps)
Plasma Gas
(Argon) Flow
Gauge*
* 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.
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.
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32

Thermal Dynamics Plasma Welding Torch Model PWH/M-2A Manuel utilisateur

Catégorie
Système de soudage
Taper
Manuel utilisateur