Tweco 15C User Manual

PLASMA
15C
DRAG-GUN
LT
PLASMA CUTTING SYSTEM
WITH BUILT IN AIR COMPRESSOR
Operating Manual
Rev. AA.01 Date: June 11, 2007 Manual # 0-4965 Operating Features:
WE APPRECIATE YOUR BUSINESS!
Congratulations on your new Thermal Dynamics product. We are proud to have you as our customer and will strive to provide you with the best service and reliability in the industry. This product is backed by our extensive warranty and world-wide service network. To locate your nearest distributor or service agency call 1-800-426­1888, or visit us on the web at www.thermadyne.com.
This Operating Manual has been designed to instruct you on the correct use and operation of your Thermal Dynamics product. Your satisfaction with this product and its safe operation is our ultimate concern. Therefore please take the time to read the entire manual, especially the Safety Precautions. They will help you to avoid po­tential hazards that may exist when working with this product.
YOU ARE IN GOOD COMPANY!
The Brand of Choice for Contractors and Fabricators World­wide.
Thermal Dynamics is a Global Brand of manual and automation Plasma Cutting Products for Thermadyne Industries Inc.
We distinguish ourselves from our competition through market­leading, dependable products that have stood the test of time. We pride ourselves on technical innovation, competitive prices, excellent delivery, superior customer service and technical support, together with excellence in sales and marketing expertise.
Above all, we are committed to developing technologically ad­vanced products to achieve a safer working environment within the welding industry.
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WARNING
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 Cutting Power Supply, 15C Drag-Gun™LT PCH 10 Torch Operating Manual No. 0-4965 Published by: Thermadyne Corporation 82 Benning Street West Lebanon, New Hampshire, USA 03784 (603) 298-5711
www.thermadyne.com
© Copyright 2007 by Thermadyne Corporation
All rights reserved.
Reproduction of this work, in whole or in part, without written permission of the publisher is prohibited.
The publisher does not assume and hereby disclaims any liability to any party for any loss or damage caused by any error or omission in this Manual, whether such error results from negligence, accident, or any other cause.
Printed in the United States of America
Publication Date: June 11, 2007
Record the following information for Warranty purposes:
Where Purchased: ___________________________________
Purchase Date:______________________________________
Power Supply Serial #:_______________________________
Torch Serial #:_____________________________________
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TABLE OF CONTENTS
SECTION 1:GENERAL INFORMATION ...................................................................................1-1
1.01 Notes, Cautions and Warnings ...................................................................1-1
1.02 Important Safety Precautions .....................................................................1-1
1.03 Publications.................................................................................................1-3
1.04 Note, Attention et Avertissement ................................................................1-3
1.05 Precautions De Securite Importantes .........................................................1-4
1.06 Documents De Reference ...........................................................................1-5
1.07 Statement of Warranty ................................................................................1-7
SECTION 2:INTRODUCTION ................................................................................................. 2-1
2.01 How To Use This Manual ............................................................................2-1
2.02 Equipment Identification .............................................................................2-1
2.03 Receipt Of Equipment ................................................................................. 2-1
2.04 Introduction .................................................................................................2-1
2.05 General Specification .................................................................................. 2-2
2.06 Features ...................................................................................................... 2-2
2.07 Torch Specifications ....................................................................................2-3
2.08 System Contents ........................................................................................2-3
2.09 Transporting Methods .................................................................................2-3
SECTION 3:INSTALLATION .....................................................................................................3-1
3.01 Site Selection ..............................................................................................3-1
3.02 Electrical Input Connections .......................................................................3-1
3.03 Torch ...........................................................................................................3-1
SECTION 4: OPERATION ........................................................................................................4-1
4.01 Front Control Panel .....................................................................................4-1
4.02 Preparations For Operating ........................................................................4-1
SECTION 5:SERVICE ..............................................................................................................5-1
5.01 General Maintenance .................................................................................5-1
5.02 Basic Troubleshooting Guide ......................................................................5-2
Appendix 1: Operating Sequence, Block Diagram .................................................................. A-1
Appendix 2: Torch Connection ................................................................................................ A-2
Appendix 3: System Schematic 120V .................................................................................... A-3
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION .........................Inside Rear Cover
TABLE OF CONTENTS
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SECTION 1:
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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 background 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

WARNING
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 1-603-298-5711 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 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.)
Manual 0-4965 1-1 GENERAL INFORMATION
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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.
• 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amma­ble material in the workplace. Any material that cannot be removed must be protected.
• Ventilateallammableorexplosivevapors
from the workplace.
• Do not cut or weld on containers that may have held combustibles.
• Providearewatchwhenworkinginan areawhererehazardsmayexist.
• Hydrogen gas may be formed and trapped under aluminum work pieces 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. Trapped hydrogen gas that is ignited will cause an explosion.
NOISE 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.
• To protect your hearing from loud noise, wear protective ear plugs and/or ear muffs. Protect others 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 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 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 work piece.
General Information 1-2 Manual 0-4965
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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 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
4. ANSI Standard Z87.1, SAFE PRACTICES FOR OC­CUPATION AND EDUCATIONAL EYE AND FACE 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
14. American Welding Society Standard AWSF4.1, REC­OMMENDED SAFE PRACTICES FOR THE PREPARA­TION FOR WELDING AND CUTTING OF CONTAIN­ERS 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classiées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.
6. ANSI Standard Z49.2, FIRE PREVENTION IN THE USE OF CUTTING AND WELDING PROCESSES, obtain-
able from American National Standards Institute, 1430 Broadway, New York, NY 10018
7. AWS Standard A6.0, WELDING AND CUTTING CON- TAINERS 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. NFPA Standard 51B, CUTTING AND WELDING PRO­CESSES, obtainable from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269
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
ATTENTION
Toute procédure pouvant résulter l’endommagement du matériel en cas de non­respect 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.
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
Manual 0-4965 1-3 GENERAL INFORMATION
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1.05 Precautions De Securite Importantes

AVERTISSEMENT
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 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.
• 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 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 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. Isolez­vous de la pièce de travail ou des autres parties du circuit de soudage.
• Réparez ou remplacez toute pièce usée ou endom-
magée.
• 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
travail d’entretien ou de réparation.
• Lisez et respectez toutes les consignes du Manuel de
consignes.
General Information 1-4 Manual 0-4965
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 provo-
querl’explosiondefuméesinammables.
• 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.
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• 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
an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.
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 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 pro-
tecteur 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.

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 Superin­tendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402
Manual 0-4965 1-5 GENERAL INFORMATION
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4. Norme ANSI Z87.1, PRATIQUES SURES POUR LA PROTECTION DES YEUX ET DU VISAGE AU TRAVAIL ET DANS LES ECOLES, disponible de l’Institut Américain des Normes Nationales (Ameri­can National Standards Institute), 1430 Broadway, New York, NY 10018
5. Norme A N SI Z4 1 . 1 , N ORMES PO UR L ES 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 National 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 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, Batterymarch Park, Quincy, MA 02269
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
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1.07 Statement of Warranty

LIMITED WARRANTY: Subject to the terms and conditions established below, Thermadyne® Corporation warrants to the original retail purchaser that new Thermal Dynamics Series plasma cutting systems sold after the effective date of this warranty are free of defects in material and workmanship. Should any failure to conform to this warranty appear within the applicable period stated below, Thermadyne Corporation shall, upon notification thereof and substantiation that the product has been stored operated and maintained in accordance with Thermadynes’ specifications, instructions, recommendations and recognized industry practice, correct such defects by suitable repair or replacement.
This warranty is exclusive and in lieu of any warranty of merchantability or fitness for a particular purpose.
Thermadyne will repair or replace, at its discretion, any warranted parts or components that fail due to defects in material or workmanship within the time periods set out below. Thermadyne Corporation must be notified within 30 days of any failure, at which time Thermadyne Corporation will provide instructions on the warranty procedures to be implemented.
Thermadyne Corporation will honor warranty claims submitted within the warranty periods listed below. All warranty periods begin on the date of sale of the product to the original retail customer or 1 year after sale to an authorized Thermadyne Distributor.
LIMITED WARRANTY PERIOD
Product
Power Supply Components
(Parts and Labor)
Torch and Leads
(Parts and Labor)
Drag-Gun™ LT 1 Year 180 days
This warranty does not apply to:
1. Consumable Parts, such as tips, electrodes, shield cups, o - rings, starter cartridges, gas distributors, fuses, filters.
2. Equipment that has been modified by an unauthorized party, improperly installed, improperly operated or misused based upon industry standards.
In the event of a claim under this warranty, the remedies shall be, at the discretion of Thermadyne Corporation:
1. Repair of the defective product.
2. Replacement of the defective product.
3. Reimbursement of reasonable costs of repair when authorized in advance by Thermadyne.
4. Payment of credit up to the purchase price less reasonable depreciation based on actual use.
These remedies may be authorized by Thermadyne and are FOB West Lebanon, NH or an authorized Thermadyne service station. Product returned for service is at the owner’s expense and no reimbursement of travel or transportation is authorized.
LIMITATION OF LIABILITY: Thermadyne Corporation 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 customer of distributors (hereinafter “Purchaser”) for service interruption. The remedies of the Purchaser set forth herein are exclusive and the liability of Thermadyne 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 the goods covered by or furnished by Thermadyne 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 liability is based.
This warranty becomes invalid if replacement parts or accessories are used which may impair the safety or performance of any Thermadyne product.
This warranty is invalid if the Thermadyne product is sold by non - authorized persons.
Effective May 23, 2007
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SECTION 2:
INTRODUCTION

2.01 How To Use This Manual

ThisOwner’sManualappliestojustspecica­tion or part numbers listed on page i. To ensure safe operation, read the entire manual, including the chapter on safety instructions and warnings. Throughout this manual, the words WARNING, CAUTION, and NOTE may appear. Pay particu­lar attention to the information provided under these headings. These special annotations are easily recognized as follows:
WARNING
A WARNING gives information regarding possible personal injury.
2.02 Equipment Identification
Theunit’sidenticationnumber(specica­tion or part number), model, and serial number usually appear on a data tag attached to the rear panel. Equipment which does not have a data tag such as torch and cable assemblies are identi-
edonlybythespecicationorpartnumber
printed on loosely attached card or the shipping container. Record these numbers on the bottom of page i for future reference.

2.03 Receipt Of Equipment

When you receive the equipment, check it against the invoice to make sure it is complete and inspect the equipment for possible damage due to shipping. If there is any damage, notify
thecarrierimmediatelytoleaclaim.Furnish
complete information concerning damage claims or shipping errors to the location in your area listed in the inside back cover of this manual.
Includeallequipmentidenticationnumbersas
described above along with a full description of the parts in error.
CAUTION
A CAUTION refers to possible equipment damage.
NOTE
A NOTE offers helpful information concerning certain operating procedures.
Additional copies of this manual may be pur­chased by contacting Thermal Dynamics at the address and phone number in your area listed in the inside back cover of this manual. Include the Owner’sManualnumberandequipmentidenti­cation numbers. Electronic copies of this manual can also be downloaded at no charge in Acrobat PDF format by going to the Thermadyne web site listed below, clicking on the Thermal Dynamics brand logo and then on the Literature link: http://www.thermadyne.com

2.04 Introduction

Plasma is a gas which has been heated to an extremely high temperature and ionized so that it becomes electrically conductive. The plasma arc cutting process uses this plasma to transfer an electrical arc to the workpiece. The metal to be cut is melted by the heat of the arc and then blown away.
Introduction 2-1 Manual 0-4965
Drag-gun™ lt
2.05 General Specification
Model Description
Maximum output 15 Amps
Input Voltage & Phase
Frequency 60Hz
Input power 2.2 kVA
Current Input fuse
No Load Voltage 330V
Load Voltage 86V
Output Current 15 Amps
Post flow time 12 Seconds
Duty cycle @ 104°F /
40° C Ambient
Genuine Cutting
Capacity
Maximum Cutting
Capacity
Dimension (W * D * H)
Gross Weight 30 lbs. (11.2 kg )
NOTE:
Refer to Local and National Codes or local au­thority having jurisdiction for proper wiring requirements.
15C Drag-Gun™
LT
120V,
Single Phase
U.S. / Canada 20
Amps
30% @ 15A,
86vdc
3/16”
(4.5 mm)
1/4”
(6.5 mm)
6.5”x18”x9.5” (165 mm x 457 mm x
241 mm )

2.06 Features

• COMPACT and LIGHT - Designed for easy transportation.
• ENERGY EFFICIENCY - Advanced tech­nology reduces power consumption.
• HIGH SPEED GENUINE CUTTING - The constricted plasma arc provides high speed cutting as well as a good quality genuine, narrow cut.
• LOW COST WITH COMPRESSED AIR
- The Drag-Gun™ LT operates on its own­compressed air.
• ALL KINDS OF METALS - Useful for most metals such as stainless steel, alumi­num, mild steel, copper and their alloys.
• PILOT ARC IGNITION FROM TORCH
- The Pilot Arc ignites the cutting arc.
• POWERFUL CUTTING PERFORMANCE
- Genuine cutting capacity is 3/16” (4.5 mm).
• ABLE TO CUT PAINTED MATERIALS
- Pilot Arc ignition allows the Drag-Gun™ LT to cut painted materials.
• EXTENDED PARTS LIFE - Consumable parts life is longer.
Introduction 2-2 Manual 0-4965
Drag-gun™ lt
8 in (203 mm)
1.1 in (27 mm)
2.9 in
(75 mm)
Art # A-07719
2.07 Torch Specifications
PCH-10 Torch Ratings
Torch Configuration
Torch Leads Length 20 feet / 6.1 m
Duty Cycle 100% @ 10 Amps
Maximum Current
Type of Cooling
Parts-in-Place:
Gas Requirement:
Plasma Power
Supply Used With:
Torch Head at 70° to
Torch Handle
15 Amps, DC,
Straight Polarity
Ambient air and gas
stream through torch
Built-in Switch
in Torch Head
Single Gas, Internal
Compressed Air Only
Drag-Gun™ LT

2.08 System Contents

Description ITEMS Q’ty
Power source Model Drag-Gun™ LT 1
Torch Set
Accessories &
Consumables
Input Power
Cable U.S.
PCH-10, with 20’
(6.1 m) leads
Work Cable
Manual
Torch Electrodes
Torch Tips
16/3 with molded plug 1
1
1 1 2 3

2.09 Transporting Methods

Lift unit with handle on top of case. Use hand­cart or similar device of adequate capacity for transporting over long distances.
WARNINGS
ELECTRIC SHOCK can kill. DO NOT TOUCH live electrical parts. Disconnect input power from supply before moving the power source.
FALLING EQUIPMENT can cause serious personal injury and equipment damage.
Introduction 2-3 Manual 0-4965
Drag-gun™ lt
This Page Intentionally Blank
Introduction 2-4 Manual 0-4965
Drag-gun™ lt
SECTION 3:
INSTALLATION

3.01 Site Selection

• Place in a clean and dry area.
• Provide adequate ventilation and fresh air supply.
• Ideal ambient temperature should not ex­ceed 40°C / 104°F. Temperatures exceed­ing that may diminish cutting capacity or quality.
• The cutting machine must be placed on an
even,rmsurface.

3.02 Electrical Input Connections

• Input voltage is 120V ± 10%, 50/60 Hz single phase.
CAUTION
Check your power source for correct voltage before plugging in or connecting the unit. The primary power source, fuse/breaker, and any extension cords used must conform to local electrical code and the recommended circuit protection and wiring requirements as specified in Section 2.

3.03 Torch

• Make sure that the torch cable and torch switch terminals are connected to front panel.
• Make sure the Work Cable is secured prop­erly to front panel.
• Before activating, turn torch away from yourself and others.
DANGER
Do not cut in humid or wet surroundings.
• Before you maintain or replace torch parts,
waitforthepostowaircycletostop,then
turn the machine off and disconnect from input power.
• Always use original manufacturers parts. The use of aftermarket parts could result in lower parts life and in unsatisfactory cut­ting results. Any warranty claims would be waived.
• Recycle worn parts according to local re­quirements.
NOTE
Repairs must be done by skilled and qualified personnel only.
Installation 3-1 Manual 0-4965
Drag-gun™ lt
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Installation 3-2 Manual 0-4965
Drag-gun™ lt
Overheating Indicator
AC Power Indicator
Air Vents
Work Lead Connection
"On / Off" Switch
Art # A-07724
Torch Lead Connection
A-07723
Electrode, 9-6006
Gas Distributor, 9-6007
Tip, 9-6099
Shield Cup, 9-6003
Torch Head Assembly
SECTION 4:
OPERATION

4.01 Front Control Panel

INDICATOR LAMP

4.02 Preparations For Operating

At the start of each operating session:
WARNING
Disconnect primary power at the source before assembling or disassembling power supply, torch parts, or torch and leads as­semblies.
Torch Parts Selection
Check the torch for proper assembly and appropri­ate torch parts. The torch parts must correspond with the type of operation, and with the amperage output of this Power Supply (15 amps maximum). Use only genuine manufacturer’s parts with this torch.
• Power Indicator - Lights when pri­mary power switch is turned on.
• TEMPERATURE Indicator - Indicator is normally OFF. Indicator is ON when internal temperature exceeds normal lim­its. Shut unit OFF; let the unit cool before continuing operation.
PRIMARY POWER SWITCH, ON / OFF
The power switch is located on the front panel. Placing the primary power switch to the “ON” position energizes the power source.
CAUTION
When the power source is overloaded, the switch turns to the OFF or neutral position automati­cally. Return completely to the OFF positioin before attempting to turn ON again.
Operation 4-1 Manual 0-4965
Drag-gun™ lt
Make a solid work cable connection to the work­piece or cutting table
A-02022
A-00024
Shield Cup
Torch
Standoff
Distance 1/8" - 3/8"
Connect Work Cable
Torch Operation
• Wear gloves and protective goggles.
• Do not place bare hand on work piece.
1. For drag cutting, keep the torch in con­tact with the work piece.
2. For standoff cutting, hold the torch 1/8
- 3/8 in (3-9 mm) from the work piece as shown below.
5. To shut off the torch simply release the Torch Trigger. When the trigger is re-
leasedagaspost-owwilloccur.Ifthe
Torch Trigger is pushed during the post-
ow,thepilotarcwillrestartimmediately
and the cutting arc will restart when the torch is brought within range of the work piece.
Typical Cutting Speeds
Cutting speeds vary according to torch output, the type of material being cut, and operator skill. Speeds shown are typical for this cutting system using air plasma to cut materials shown.
Material Material
1/8” 25.0
Mild Steel
3/16” 16.0
1/4” slow speeds
Inches Per
3. With the torch in starting position, press and hold the Torch Trigger. The pilot arc will come on and remain on until the cut-
Operation 4-2 Manual 0-4965
ting arc starts.
4. Once on, the cutting arc remains on as long as the Torch Trigger is held down.

5.01 General Maintenance

Warning! Disconnect input power before maintaining.
Each Use
Visual check of torch tip and electrode
Weekly
Visually inspect the torch body tip, electrode and shield cup
Visually inspect the cables and leads. Replace as needed
3 Months
Clean exterior of power supply
6 Months
Replace all broken parts
Visually check and Carefully clean the interior
Maintain more often if used under severe conditions
Art # A-07891
Drag-gun™ lt
SECTION 5:
SERVICE
Manual 0-4965 5-1 SERVICE
Drag-gun™ lt

5.02 Basic Troubleshooting Guide

WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do not attempt to diagnose or repair unless you have had training in power electronics measurement and troubleshooting techniques.
Basic Troubleshooting, Overview
This guide covers basic troubleshooting. It is helpful for solving many of the common problems that can arise with this system. If major complex subassemblies are faulty, the unit must be returned to an authorized service center for repair. Follow all instructions as listed and complete each section in the order presented.
Common Symptoms
Problem - Symptom Possible Cause Recommended Action
Power Switch is on
but the A/C Indicator
does not light
1. Improper electrical connection.
2. System was overloaded.
3. Switch may be faulty
1. Check input power source and circuit breaker or fuse. Check input cable and connections.
2. Turn Primary Power Switch Off and then On again.
3. Return to authorized service center for repair or replacement
Primary power switch
is on, but the cooling
fan does not work.
No air flow at torch
when torch switch is
activated.
Torch will not pilot
when torch switch is
activated.
Cut performance is
diminished.
1. No power or incorrect power to fan.
2. Faulty fan.
1. Internal connection is loose or disconnected.
2. Internal air supply / compressor not working.
3. Control PCB faulty
1. Air pressure too high or too low.
2. Torch consumables missing.
3. Worn or faulty torch parts
4. Thermal Switch activated
1. Worn torch parts.
2. Poor Work Lead connection.
3. Current sensor or PWM PCB faulty.
1. Check electrical connections to fan.
2. Return to authorized service center for repair or replacement
1. Check all air line connections and fittings.
2. Return to an authorized service center for repair.
3. Return to an authorized service center for repair.
1. There is no adjustment, return to an authorized service center for repair.
2. Turn off power supply. Remove shield cup. Install missing parts.
3. Inspect torch consumable parts. *Replace if necessary.
4. Allow the cooling fan to run for 2 minutes or longer until it will resume operation.
1. Check current setting. *Check the Electrode and Tip for excess wear.
2. *Check the connection of the Work Lead to the work piece.
3. Return to an authorized service center for repair or replacement.
* See following illustrations for parts wear and work lead connection
SERVICE 5-2 Manual 0-4965
Examples of parts wear.
New Electrode
Worn Electrode
A-01270
Good Tip
Worn Tip
Art# A-07727
Make a solid work cable connection to the work­piece or cutting table
A-02022
Example of Work Lead connection.
Drag-gun™ lt
Manual 0-4965 5-3 SERVICE
Drag-gun™ lt
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SERVICE 5-4 Manual 0-4965
Drag-gun™ lt
Primary Input Power "On" or Plugged in
Green Power Indicator "On" and Fan is Running
Power Supply On/Off Switch "On"
No Pilot Arc
Compressor and Pilot Arc Ignition starts
Start Cutting Operation
YES
Post Flow of Air, Approximately 12 Seconds Then Stops
Cutting Done ?
Torch Switch "On"
Primary Input Power Switch "Off" or Unplugged
Green Power Indicator "Off" and Fan Stops
Power Supply On/Off Switch "Off"
Check Torch parts alignment.
(PIP switches need to be repaired by a Qualified Technician. More air flow is required for Torch to Pilot than to run the power supply. Compressor not functioning properly needs to be repaired by a Qualified Technician)
Note: The Torch will be very hot! Do not set on or near flammable materials!
Art # A-07874
Release Torch Switch

Appendix 1: Operating Sequence, Block Diagram

Manual 0-4965 A-1 APPENDIX
Drag-gun™ lt
Pilot Wire (Pink)
Art # A-07880
To Power Supply Adapter
Pilot
Black
White
PIP Switch
Torch Switch
Torch Leads
Torch Head
Detail
Pilot Wire Connection
Black
White
Air and Negative /Plasma Lead
Air Line and
To Compressor
Disconnect power. Remove ten screws from cover and remove the cover.
Negative / Plasma Lead
Pink

Appendix 2: Torch Connection

APPENDIX A-2 Manual 0-4965

Appendix 3: System Schematic 120V

Art # A-07881
Drag-gun™ lt
Manual 0-4965 A-3 APPENDIX
Drag-gun™ lt
This Page Intentionally Blank
APPENDIX A-4 Manual 0-4965
GLOBAL CUSTOMER SERVICE CONTACT
Thermadyne USA
2800 Airport Road Denton, Tx 76207 USA Telephone: (940) 566-2000 800-426-1888 Fax: 800-535-0557
Thermadyne Canada
2070 Wyecroft Road Oakville, Ontario Canada, L6L5V6 Telephone: (905)-827-1111 Fax: 905-827-3648
Thermadyne Europe
Europe Building Chorley North Industrial Park Chorley, Lancashire England, PR6 7Bx Telephone: 44-1257-261755 Fax: 44-1257-224800
Thermadyne Asia Sdn Bhd
Lot 151, Jalan Industri 3/5A Rawang Integrated Industrial Park - Jln Batu Arang 48000 Rawang Selangor Darul Ehsan West Malaysia Telephone: 603+ 6092 2988 Fax : 603+ 6092 1085
Cigweld, Australia
71 Gower Street Preston, Victoria Australia, 3072 Telephone: 61-3-9474-7400 Fax: 61-3-9474-7510
Thermadyne Italy
OCIM, S.r.L. Via Benaco, 3 20098 S. Giuliano Milan, Italy Tel: (39) 02-98 80320 Fax: (39) 02-98 281773
Thermadyne, China
RM 102A 685 Ding Xi Rd Chang Ning District Shanghai, PR, 200052 Telephone: 86-21-69171135 Fax: 86-21-69171139
Thermadyne International
2070 Wyecroft Road Oakville, Ontario Canada, L6L5V6 Telephone: (905)-827-9777 Fax: 905-827-9797
Corporate Headquarters
16052 Swingley Ridge Road Suite 300 St. Louis, MO 63017 Telephone: 636-728-3000 Email: TDCSales@Thermadyne.com
www.thermadyne.com
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