Lincoln Electric Welder IM10051 User Manual

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IM10051

INVERTEC^®V311-T AC/DC

December, 2009

For use with machines having Code Numbers:

11685

Safety Depends on You

Lincoln arc welding and cutting

equipment is designed and built

with safety in mind. However,

your overall safety can be

increased by proper installation ...

and thoughtful operation on your

part. DO NOT INSTALL, OPER-

ATE OR REPAIR THIS EQUIP-

MENT WITHOUT READING

THIS MANUAL AND THE SAFE-

TY PRECAUTIONS CONTAINED

THROUGHOUT. And, most

importantly, think before you act

and be careful.

OPERATOR’S MANUAL

• World's Leader in Welding and Cutting Products •

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

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SAFETY

ARC RAYS can burn.

ELECTRIC SHOCK can

4.a. Use a shield with the proper filter and cover

plates to protect your eyes from sparks and

the rays of the arc when welding or observing

open arc welding. Headshield and filter lens

should conform to ANSI Z87. I standards.

kill.

3.a. The electrode and work (or ground) circuits

are electrically “hot” when the welder is on.

Do not touch these “hot” parts with your bare

skin or wet clothing. Wear dry, hole-free

gloves to insulate hands.

4.b. Use suitable clothing made from durable flame-resistant

material to protect your skin and that of your helpers from

the arc rays.

3.b. Insulate yourself from work and ground using dry insulation.

Make certain the insulation is large enough to cover your full

area of physical contact with work and ground.

4.c. Protect other nearby personnel with suitable, non-flammable

screening and/or warn them not to watch the arc nor expose

themselves to the arc rays or to hot spatter or metal.

In addition to the normal safety precautions, if welding

must be performed under electrically hazardous

conditions (in damp locations or while wearing wet

clothing; on metal structures such as floors, gratings or

scaffolds; when in cramped positions such as sitting,

kneeling or lying, if there is a high risk of unavoidable or

accidental contact with the workpiece or ground) use

the following equipment:

FUMES AND GASES

can be dangerous.

5.a. Welding may produce fumes and gases

hazardous to health. Avoid breathing these

• Semiautomatic DC Constant Voltage (Wire) Welder.

• DC Manual (Stick) Welder.

fumes and gases. When welding, keep

your head out of the fume. Use enough

ventilation and/or exhaust at the arc to keep

• AC Welder with Reduced Voltage Control.

fumes and gases away from the breathing zone. When

welding with electrodes which require special

ventilation such as stainless or hard facing (see

instructions on container or MSDS) or on lead or

cadmium plated steel and other metals or coatings

which produce highly toxic fumes, keep exposure as

low as possible and within applicable OSHA PEL and

ACGIH TLV limits using local exhaust or mechanical

ventilation. In confined spaces or in some circum-

stances, outdoors, a respirator may be required.

Additional precautions are also required when welding

on galvanized steel.

3.c. In semiautomatic or automatic wire welding, the electrode,

electrode reel, welding head, nozzle or semiautomatic

welding gun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electrical

connection with the metal being welded. The connection

should be as close as possible to the area being welded.

3.e. Ground the work or metal to be welded to a good electrical

(earth) ground.

3.f. Maintain the electrode holder, work clamp, welding cable and

welding machine in good, safe operating condition. Replace

damaged insulation.

5. b. The operation of welding fume control equipment is affected

by various factors including proper use and positioning of

the equipment, maintenance of the equipment and the spe-

cific welding procedure and application involved. Worker

exposure level should be checked upon installation and

periodically thereafter to be certain it is within applicable

OSHA PEL and ACGIH TLV limits.

3.g. Never dip the electrode in water for cooling.

3.h. Never simultaneously touch electrically “hot” parts of

electrode holders connected to two welders because voltage

between the two can be the total of the open circuit voltage

of both welders.

5.c. Do not weld in locations near chlorinated hydrocarbon vapors

coming from degreasing, cleaning or spraying operations.

The heat and rays of the arc can react with solvent vapors to

form phosgene, a highly toxic gas, and other irritating prod-

ucts.

3.i. When working above floor level, use a safety belt to protect

yourself from a fall should you get a shock.

3.j. Also see Items 6.c. and 8.

5.d. Shielding gases used for arc welding can displace air and

cause injury or death. Always use enough ventilation,

especially in confined areas, to insure breathing air is safe.

5.e. Read and understand the manufacturer’s instructions for this

equipment and the consumables to be used, including the

material safety data sheet (MSDS) and follow your

employer’s safety practices. MSDS forms are available from

your welding distributor or from the manufacturer.

5.f. Also see item 1.b.

Jan ‘09

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iii

SAFETY

WELDING and CUTTING

CYLINDER may explode

if damaged.

SPARKS can

cause fire or explosion.

7.a. Use only compressed gas cylinders

containing the correct shielding gas for the

6.a. Remove fire hazards from the welding area.

If this is not possible, cover them to prevent

the welding sparks from starting a fire.

process used and properly operating

regulators designed for the gas and

Remember that welding sparks and hot

materials from welding can easily go through small cracks

and openings to adjacent areas. Avoid welding near

hydraulic lines. Have a fire extinguisher readily available.

pressure used. All hoses, fittings, etc. should be suitable for

the application and maintained in good condition.

7.b. Always keep cylinders in an upright position securely

chained to an undercarriage or fixed support.

6.b. Where compressed gases are to be used at the job site,

special precautions should be used to prevent hazardous

situations. Refer to “Safety in Welding and Cutting” (ANSI

Standard Z49.1) and the operating information for the

equipment being used.

7.c. Cylinders should be located:

• Away from areas where they may be struck or subjected to

physical damage.

• A safe distance from arc welding or cutting operations and

any other source of heat, sparks, or flame.

6.c. When not welding, make certain no part of the electrode

circuit is touching the work or ground. Accidental contact

can cause overheating and create a fire hazard.

7.d. Never allow the electrode, electrode holder or any other

electrically “hot” parts to touch a cylinder.

6.d. Do not heat, cut or weld tanks, drums or containers until the

proper steps have been taken to insure that such procedures

will not cause flammable or toxic vapors from substances

inside. They can cause an explosion even though they have

been “cleaned”. For information, purchase “Recommended

Safe Practices for the Preparation for Welding and Cutting of

Containers and Piping That Have Held Hazardous

Substances”, AWS F4.1 from the American Welding Society

(see address above).

7.e. Keep your head and face away from the cylinder valve outlet

when opening the cylinder valve.

7.f. Valve protection caps should always be in place and hand

tight except when the cylinder is in use or connected for

use.

7.g. Read and follow the instructions on compressed gas

cylinders, associated equipment, and CGA publication P-l,

“Precautions for Safe Handling of Compressed Gases in

Cylinders,” available from the Compressed Gas Association

1235 Jefferson Davis Highway, Arlington, VA 22202.

6.e. Vent hollow castings or containers before heating, cutting or

welding. They may explode.

6.f. Sparks and spatter are thrown from the welding arc. Wear oil

free protective garments such as leather gloves, heavy shirt,

cuffless trousers, high shoes and a cap over your hair. Wear

ear plugs when welding out of position or in confined places.

Always wear safety glasses with side shields when in a

welding area.

FOR ELECTRICALLY

powered equipment.

8.a. Turn off input power using the disconnect

switch at the fuse box before working on

the equipment.

6.g. Connect the work cable to the work as close to the welding

area as practical. Work cables connected to the building

framework or other locations away from the welding area

increase the possibility of the welding current passing

through lifting chains, crane cables or other alternate cir-

cuits. This can create fire hazards or overheat lifting chains

or cables until they fail.

8.b. Install equipment in accordance with the U.S. National

Electrical Code, all local codes and the manufacturer’s

recommendations.

8.c. Ground the equipment in accordance with the U.S. National

Electrical Code and the manufacturer’s recommendations.

6.h. Also see item 1.c.

6.I. Read and follow NFPA 51B “ Standard for Fire Prevention

During Welding, Cutting and Other Hot Work”, available

from NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma

022690-9101.

6.j. Do not use a welding power source for pipe thawing.

Refer to http://www.lincolnelectric.com/safety for additional safety information.

Jan ‘09

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SAFETY

PRÉCAUTIONS DE SÛRETÉ

6. Eloigner les matériaux inflammables ou les recouvrir afin de

prévenir tout risque d’incendie dû aux étincelles.

Pour votre propre protection lire et observer toutes les instructions

et les précautions de sûreté specifiques qui parraissent dans ce

manuel aussi bien que les précautions de sûreté générales suiv-

antes:

7. Quand on ne soude pas, poser la pince à une endroit isolé de

la masse. Un court-circuit accidental peut provoquer un

échauffement et un risque d’incendie.

Sûreté Pour Soudage A L’Arc

8. S’assurer que la masse est connectée le plus prés possible

de la zone de travail qu’il est pratique de le faire. Si on place

la masse sur la charpente de la construction ou d’autres

endroits éloignés de la zone de travail, on augmente le risque

de voir passer le courant de soudage par les chaines de lev-

age, câbles de grue, ou autres circuits. Cela peut provoquer

des risques d’incendie ou d’echauffement des chaines et des

câbles jusqu’à ce qu’ils se rompent.

1. Protegez-vous contre la secousse électrique:

a. Les circuits à l’électrode et à la piéce sont sous tension

quand la machine à souder est en marche. Eviter toujours

tout contact entre les parties sous tension et la peau nue

ou les vétements mouillés. Porter des gants secs et sans

trous pour isoler les mains.

b. Faire trés attention de bien s’isoler de la masse quand on

soude dans des endroits humides, ou sur un plancher

metallique ou des grilles metalliques, principalement dans

les positions assis ou couché pour lesquelles une grande

partie du corps peut être en contact avec la masse.

c. Maintenir le porte-électrode, la pince de masse, le câble

de soudage et la machine à souder en bon et sûr état

defonctionnement.

9. Assurer une ventilation suffisante dans la zone de soudage.

Ceci est particuliérement important pour le soudage de tôles

galvanisées plombées, ou cadmiées ou tout autre métal qui

produit des fumeés toxiques.

10. Ne pas souder en présence de vapeurs de chlore provenant

d’opérations de dégraissage, nettoyage ou pistolage. La

chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs

du solvant pour produire du phosgéne (gas fortement toxique)

ou autres produits irritants.

d.Ne jamais plonger le porte-électrode dans l’eau pour le

refroidir.

e. Ne jamais toucher simultanément les parties sous tension

des porte-électrodes connectés à deux machines à souder

parce que la tension entre les deux pinces peut être le

total de la tension à vide des deux machines.

11. Pour obtenir de plus amples renseignements sur la sûreté,

voir le code “Code for safety in welding and cutting” CSA

Standard W 117.2-1974.

f. Si on utilise la machine à souder comme une source de

courant pour soudage semi-automatique, ces precautions

pour le porte-électrode s’applicuent aussi au pistolet de

soudage.

2. Dans le cas de travail au dessus du niveau du sol, se protéger

contre les chutes dans le cas ou on recoit un choc. Ne jamais

enrouler le câble-électrode autour de n’importe quelle partie

du corps.

PRÉCAUTIONS DE SÛRETÉ POUR

LES MACHINES À SOUDER À

TRANSFORMATEUR ET À

REDRESSEUR

3. Un coup d’arc peut être plus sévère qu’un coup de soliel,

donc:

a. Utiliser un bon masque avec un verre filtrant approprié

ainsi qu’un verre blanc afin de se protéger les yeux du ray-

onnement de l’arc et des projections quand on soude ou

quand on regarde l’arc.

1. Relier à la terre le chassis du poste conformement au code de

l’électricité et aux recommendations du fabricant. Le dispositif

de montage ou la piece à souder doit être branché à une

bonne mise à la terre.

b. Porter des vêtements convenables afin de protéger la

peau de soudeur et des aides contre le rayonnement de

l‘arc.

2. Autant que possible, I’installation et l’entretien du poste seront

effectués par un électricien qualifié.

c. Protéger l’autre personnel travaillant à proximité au

soudage à l’aide d’écrans appropriés et non-inflammables.

3. Avant de faires des travaux à l’interieur de poste, la debranch-

er à l’interrupteur à la boite de fusibles.

4. Des gouttes de laitier en fusion sont émises de l’arc de

soudage. Se protéger avec des vêtements de protection libres

de l’huile, tels que les gants en cuir, chemise épaisse, pan-

talons sans revers, et chaussures montantes.

4. Garder tous les couvercles et dispositifs de sûreté à leur

place.

5. Toujours porter des lunettes de sécurité dans la zone de

soudage. Utiliser des lunettes avec écrans lateraux dans les

zones où l’on pique le laitier.

Mar. ‘93

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SAFETY

Electromagnetic Compatibility (EMC)

Conformance

Products displaying the CE mark are in conformity with European Community Council Directive of 3 May

1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility

(89/336/EEC). It was manufactured in conformity with a national standard that implements a harmonized

standard: EN 60974-10 Electromagnetic Compatibility (EMC) Product Standard for Arc Welding Equipment.

It is for use with other Lincoln Electric equipment. It is designed for industrial and professional use.

Introduction

All electrical equipment generates small amounts of electromagnetic emission. Electrical emission may be

transmitted through power lines or radiated through space, similar to a radio transmitter. When emissions

are received by other equipment, electrical interference may result. Electrical emissions may affect many

kinds of electrical equipment; other nearby welding equipment, radio and TV reception, numerical controlled

machines, telephone systems, computers, etc. Be aware that interference may result and extra precautions

may be required when a welding power source is used in a domestic establishment.

Installation and Use

The user is responsible for installing and using the welding equipment according to the manufacturer’s

instructions. If electromagnetic disturbances are detected then it shall be the responsibility of the user of the

welding equipment to resolve the situation with the technical assistance of the manufacturer. In some cases

this remedial action may be as simple as earthing (grounding) the welding circuit, see Note. In other cases it

could involve construction an electromagnetic screen enclosing the power source and the work complete

with associated input filters. In all cases electromagnetic disturbances must be reduced to the point where

they are no longer troublesome.

Note: The welding circuit may or may not be earthed for safety reasons according to national codes.

Changing the earthing arrangements should only be authorized by a person who is compe-

tent to access whether the changes will increase the risk of injury, e.g., by allowing parallel

welding current return paths which may damage the earth circuits of other equipment.

Assessment of Area

Before installing welding equipment the user shall make an assessment of potential electromagnetic prob-

lems in the surrounding area. The following shall be taken into account:

a) other supply cables, control cables, signaling and telephone cables; above, below and adjacent to the

welding equipment;

b) radio and television transmitters and receivers;

c) computer and other control equipment;

d) safety critical equipment, e.g., guarding of industrial equipment;

e) the health of the people around, e.g., the use of pacemakers and hearing aids;

f) equipment used for calibration or measurement

g) the immunity of other equipment in the environment. The user shall ensure that other equipment being

used in the environment is compatible. This may require additional protection measures;

h) the time of day that welding or other activities are to be carried out.

L10093 3-1-96H

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SAFETY

Electromagnetic Compatibility (EMC)

The size of the surrounding area to be considered will depend on the structure of the building and other

activities that are taking place. The surrounding area may extend beyond the boundaries of the premises.

Methods of Reducing Emissions

Mains Supply

Welding equipment should be connected to the mains supply according to the manufacturer’s recommenda-

tions. If interference occurs, it may be necessary to take additional precautions such as filtering of the mains

supply. Consideration should be given to shielding the supply cable of permanently installed welding equip-

ment, in metallic conduit or equivalent. Shielding should be electrically continuous throughout its length. The

shielding should be connected to the welding power source so that good electrical contact is maintained

between the conduit and the welding power source enclosure.

Maintenance of the Welding Equipment

The welding equipment should be routinely maintained according to the manufacturer’s recommendations.

All access and service doors and covers should be closed and properly fastened when the welding equip-

ment is in operation. The welding equipment should not be modified in any way except for those changes

and adjustments covered in the manufacturers instructions. In particular, the spark gaps of arc striking and

stabilizing devices should be adjusted and maintained according to the manufacturer’s recommendations.

Welding Cables

The welding cables should be kept as short as possible and should be positioned close together, running at

or close to floor level.

Equipotential Bonding

Bonding of all metallic components in the welding installation and adjacent to it should be considered.

However, metallic components bonded to the work piece will increase the risk that the operator could

receive a shock by touching these metallic components and the electrode at the same time. The operator

should be insulated from all such bonded metallic components.

Earthing of the Workpiece

Where the workpiece is not bonded to earth for electrical safety, not connected to earth because of its size

and position, e.g., ships hull or building steelwork, a connection bonding the workpiece to earth may reduce

emissions in some, but not all instances. Care should be taken to prevent the earthing of the workpiece

increasing the risk of injury to users, or damage to other electrical equipment. Where necessary, the connec-

tion of the workpiece to earth should be made by a direct connection to the workpiece, but in some countries

where direct connection is not permitted, the bonding should be achieved by suitable capacitance, selected

according to national regulations.

Screening and Shielding

Selective screening and shielding of other cables and equipment in the surrounding area may alleviate prob-

lems of interference. Screening of the entire welding installation may be considered for special applications.

_________________________

Portions of the preceding text are contained in EN 60974-10: “Electromagnetic Compatibility (EMC) prod-

uct standard for arc welding equipment.”

L10093 3-1-96H

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vii

for selecting a QUALITY product by Lincoln Electric. We want you

to take pride in operating this Lincoln Electric Company product

••• as much pride as we have in bringing this product to you!

Thank You

CUSTOMER ASSISTANCE POLICY

The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equip-

ment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln

Electric for advice or information about their use of our products. We respond to our customers based on the best information in our posses-

sion at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such infor-

mation or advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customer’s particular purpose,

with respect to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or

correcting any such information or advice once it has been given, nor does the provision of information or advice create, expand or alter any

warranty with respect to the sale of our products.

Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control

of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in

applying these types of fabrication methods and service requirements.

Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com

for any updated information.

Please Examine Carton and Equipment For Damage Immediately

When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims

for material damaged in shipment must be made by the purchaser against the transportation company at the

time the shipment is received.

Please record your equipment identification information below for future reference. This information can be

found on your machine nameplate.

Product _________________________________________________________________________________

Model Number ___________________________________________________________________________

Code Number or Date Code_________________________________________________________________

Serial Number____________________________________________________________________________

Date Purchased___________________________________________________________________________

Where Purchased_________________________________________________________________________

Whenever you request replacement parts or information on this equipment, always supply the information you

have recorded above. The code number is especially important when identifying the correct replacement parts.

On-Line Product Registration

- Register your machine with Lincoln Electric either via fax or over the Internet.

• For faxing: Complete the form on the back of the warranty statement included in the literature packet

accompanying this machine and fax the form per the instructions printed on it.

• For On-Line Registration: Go to our WEB SITE at www.lincolnelectric.com. Choose “Quick Links” and then

“Product Registration”. Please complete the form and submit your registration.

Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it

handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.

The level of seriousness to be applied to each is explained below:

WARNING

This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.

CAUTION

This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.

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viii

TABLE OF CONTENTS

Page

Installation.......................................................................................................................Section A

Technical Specifications.......................................................................................................A-1

Select Suitable Location.......................................................................................................A-2

Stacking................................................................................................................................A-2

Tilting....................................................................................................................................A-2

Environmental Area..............................................................................................................A-2

Machine Grounding and High Frequency Interference Protection .......................................A-2

Input Connections ................................................................................................................A-3

Reconnect Procedure...........................................................................................................A-3

Input Plug Installation...........................................................................................................A-4

Engine Drive Generator........................................................................................................A-4

Output Connections..............................................................................................................A-5

Output and Gas Connection for Tig Welding........................................................................A-5

Work Cable Connection .......................................................................................................A-5

Output Connection for Stick Welding ...................................................................................A-5

Quick Disconnect Plug .........................................................................................................A-6

Shielding Gas Connection....................................................................................................A-6

Remote Control Connection.................................................................................................A-6

________________________________________________________________________________

Operation.........................................................................................................................Section B

Safety Instructions................................................................................................................B-1

General Description..............................................................................................................B-1

Welding Capability................................................................................................................B-1

Limitations ............................................................................................................................B-1

Rear Control Panel...............................................................................................................B-2

Lower Control Panel.............................................................................................................B-2

User Interface Overview and Operation...............................................................................B-3

Dynamic LCD Display ...........................................................................................B-4, B-5, B-6

Welding Parameter ..............................................................................................................B-7

User Menu Set Up Parameters ............................................................................................B-8

Set Up Menu Parameters, Optional Cool-Arc 35 Water Cooler..................................B-9, B-10

Tips For Improved TIG Starting, Stick Crisp Mode Dynamic Current Regulation .............B-11

________________________________________________________________________________

Accessories.....................................................................................................Section C

Optional Accessories and Compatible Equipment ................................................C-1

Factory, Field Installed...................................................................................C-1, C-2

________________________________________________________________________

Maintenance ....................................................................................................Section D

Safety Precautions ................................................................................................D-1

Input Filter Capacitor Discharge Procedure ..........................................................D-1

Routine Maintenance.............................................................................................D-1

________________________________________________________________________

Troubleshooting..............................................................................................Section E

How to Use Troubleshooting Guide.......................................................................E-1

Troubleshooting Guide.............................................................................E-2 thru E-5

________________________________________________________________________

Wiring Diagram ...............................................................................................Section F

________________________________________________________________________

Parts Lists...............................................................................................................P-643

________________________________________________________________________

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A-1

INSTALLATION

TECHNICAL SPECIFICATIONS - INVERTEC® V311-T AC/DC TIG K2915-1

RATED OUTPUT

Rated Output Current, Voltage,

Duty Cycle (104°F, 40°C)

Input Power

Input Current @ Rated Output

Phase

Voltage/ Hertz

210A / 18.4V / 100%

230A / 19.2V / 60%

310A / 22.4V / 40%

200A / 28.0V / 100%

7.3A

8.3A

12.3A

9.6A

TIG

460/50/60

230/50/60

STICK

TIG

220A / 28.8V / 60%

270A / 30.8V / 40%

210A / 18.4V / 100%

230A / 19.2V / 60%

310A / 22.4V / 30%

200A / 28.0V / 100%

220A / 28.8V / 60%

270A / 30.8V / 35%

210A / 18.4V / 100%

230A / 19.2V / 60%

310A / 22.4V / 30%

200A / 28.0V / 100%

220A / 28.8V / 60%

270A / 30.8V / 35%

200A / 18.0V / 100%

220A / 18.8V / 60%

310A /22.4V / 35%

190A / 27.6V / 100%

210A / 28.4V / 60%

270A / 30.8V / 35%

200A / 18.0V / 100%

220A / 18.8V / 60%

310A / 22.4V / 25%

190A / 27.6V / 100%

210A / 28.4V / 60%

270A / 30.8V / 30%

200A / 18.0V / 100%

220A / 18.8V / 60%

310A / 22.4V / 25%

190A / 27.6V / 100%

210A / 28.4V / 60%

270A / 30.8V / 30%

10.7A

13.8A

13.9A

15.8A

24.6A

18.7A

20.9A

27.7A

15.3A

17.5A

27.3A

20.5A

23.6A

30.8A

13.6A

14.9A

23.1A

17.2A

19.4A

25.7A

21.9A

24.6A

41.5A

29.2A

33.2A

47.1A

24.2A

27.7A

47.3A

32.1A

37.3A

52.5A

Three-

Phase

STICK

TIG

208/50/60

460/50/60

STICK

TIG

STICK

TIG

Single-

Phase

230/50/60

208/50/60

STICK

TIG

STICK

OUTPUT RANGE

Type of Output

Output Current Range

Maximum Open Circuit Voltage

AC/DC

5-310 Amps

80 Volts Max.

RECOMMENDED INPUT WIRE AND FUZE SIZES FOR MAXIMUM OUTPUT

Maximum Time-Delay Circuit

Breaker or Fuse Size (Amps)

Input Voltage/Frequency (Hz)

Type S, SO, STO, or other EXTRA

HARD USAGE Input Cord

10 AWG, 4 Conductor

208/230/460/50/60

PHYSICAL DIMENSIONS

Height

Width

Depth

Weight

17.0 in.

432 mm

11.0 in.

280 mm

24.5 in.

622 mm

Approx. 75 lbs.

34.0 kgs.

TEMPERATURE RANGES

OPERATING TEMPERATURE RANGE

STORAGE TEMPERATURE RANGE

-20°C to +40°C

-50°C to +85°C

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A-2

INSTALLATION

Read entire installation section before starting

installation.

MACHINE GROUNDING AND HIGH FRE-

QUENCY INTERFERENCE PROTECTION

Safety Precautions

The Capacitor Discharge Circuit used in the high fre-

quency generator, may cause many radio, TV and

electronic equipment interference problems. These

problems may be the result of radiated interference.

Proper grounding methods can reduce or eliminate

radiated interference.

WARNING

ELECTRIC SHOCK can kill.

• Only qualified personnel should per-

form this installation.

The Invertec® V311-T AC/DC TIG has been field test-

ed under recommended installation conditions. It com-

plies with FCC allowable limits for radiation.

• Turn the input power OFF and

unplug the machine from the recep-

tacle before working on this equip-

ment. Allow machine to sit for 5 min-

utes minimum to allow the power

capacitors to discharge before

working inside this equipment.

Radiated interference can develop in the following

four ways:

1. Direct interference radiated from the welder.

•

Insulate yourself from the work and ground.

Always wear dry insulating gloves.

2. Direct interference radiated from the welding leads.

• Always connect the Invertec® V311-T AC/DC TIG

to a power supply grounded according to the

National Electrical Code and local codes.

3. Direct interference radiated from feedback into the

power lines.

4. Interference from re-radiation of “pickup” by

ungrounded metallic objects.

------------------------------------------------------------

SELECT SUITABLE LOCATION

Keeping these contributing factors in mind, installing

equipment per the following instructions should mini-

mize problems.

The Invertec® V311-T AC/DC TIG will operate in

harsh environments. Even so, it is important that sim-

ple preventative measures are followed in order to

assure long life and reliable operation.

1. Keep the welder power supply lines as short as

possible and enclose as much of them as possible

in rigid metallic conduit or equivalent shielding for a

distance of 50 feet (15.2m). There should be good

electrical contact between this conduit and the

welder case ground. Both ends of the conduit

should be connected to a driven ground and the

entire length should be continuous.

• The machine must be located where there is free cir-

culation of clean air such that air movement in the

back and out the front will not be restricted.

• Dirt and dust that can be drawn into the machine

should be kept to a minimum. Failure to observe

these precautions can result in excessive operating

temperatures and nuisance shutdown.

2. Keep the work and electrode leads as short as

possible and as close together as possible.

Lengths should not exceed 25 ft (7.6m).

STACKING

The Invertec® V311-T AC/DC TIG can not be

stacked.

3. Be sure the torch and work cable rubber cover-

ings are free of cuts and cracks that allow high

frequency leakage. Cables with high natural rub-

ber content, such as Lincoln Stable-Arc^®better

resist high frequency leakage than neoprene and

other synthetic rubber insulated cables.

TILTING

Place the machine directly on a secure, level surface.

The machine may topple over if this procedure is not

followed.

4. Keep the torch in good repair and all connections

tight to reduce high frequency leakage.

ENVIRONMENTAL AREA

Keep the machine dry. Do not place it on wet ground

or in puddles.

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A-3

INSTALLATION

5. The work terminal must be connected to a ground

within ten feet of the welder, using one of the fol-

lowing methods.

RECONNECT PROCEDURE

The Invertec® V311-T AC/DC auto reconnects to

208V, 230V or 460V supply.

a) A metal underground water pipe in direct con-

tact with the earth for ten feet or more.

Fuse the input circuit with time delay fuses or delay

type circuit breakers. Using fuses or circuit breakers

smaller than recommended may result in “nuisance”

shut-offs from welder inrush currents even if not weld-

ing at high currents.

b) A 3/4” (19mm) galvanized pipe or a 5/8”

(16mm) solid galvanized iron, steel or copper

rod driven at least eight feet into the ground.

The ground should be securely made and the

grounding cable should be as short as possible

using cable of the same size as the work cable, or

larger. Grounding to the building frame electrical

conduit or a long pipe system can result in re-radi-

ation, effectively making these members radiating

antennas.

The Invertec® V311-T AC/DC is recommended for

use on an individual branch circuit.

¹ Also called “inverse time” or “thermal/magnetic” circuit breakers.

These circuit breakers have a delay in tripping action that

decreases as the magnitude of the current increases.

6. Keep all panels securely in place.

7. All electrical conductors within 50 ft (15.2m) of the

welder should be enclosed in grounded, rigid

metallic conduit or equivalent shielding. Flexible

metallic conduit is generally not suitable.

8. When the welder is enclosed in a metal building,

several earth driven electrical grounds connected

(as in 5b above) around the periphery of the build-

ing are recommended.

Failure to observe these recommended installation

procedures can cause radio or TV interference prob-

lems.

INPUT CONNECTIONS

Be sure the voltage, phase, and frequency of the input

power is as specified on the rating plate, located on

the bottom of the machine.

WARNING

ELECTRIC SHOCK can kill.

• Have a qualified electrician install

and service this equipment.

• Turn the input power OFF and unplug

the machine from the receptacle

before working on this equipment.

• Allow machine to sit for 5 minutes minimum to

allow the power capacitors to discharge before

working inside this equipment.

• Do not touch electrically hot parts.

• Machine must be plugged into a receptacle that

is grounded according to the National Electrical

Code and local codes.

• Do not remove or defeat the purpose of the

power cord ground pin.

------------------------------------------------------------

INVERTEC® V311-T AC/DC TIG

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A-4

INSTALLATION

INPUT PLUG INSTALLATION

ENGINE DRIVEN GENERATOR

POWER CORD CONNECTION

The Invertec® V311-T AC/DC TIG can be operated on

engine driven generators as long as the 230 volt auxil-

iary meets the following conditions:

• The AC waveform peak voltage is below 400 volts.

• The AC waveform frequency is between 45 and

65Hz.

A 10 ft. power cord is provided and wired into the

machine. Follow the power cord connection instruc-

tions.

Single Phase Input

Connect green lead to ground per National Electrical

Code.

Connect black and red leads to power.

Wrap white lead with tape to provide 600V insulation.

Three Phase Input

Connect green lead to ground per National Electric

Code.

The following Lincoln engine drives meet these condi-

tions when run in the high idle mode:

• Ranger 250, 305

• Vantage 300, 400, 500

Some engine drives do not meet these conditions

(e.g. Miller Bobcats, etc). Operation of the Invertec®

V311-T AC/DC is not recommended on engine drives

not conforming to these conditions. Such drives may

deliver unacceptably high voltage levels to the

Invertec® V311-T AC/DC power source.

Connect black, red and white leads to power.

WARNING

Failure to wire as instructed may cause personal

injury or damage to equipment. To be installed

or checked by an electrician or qualified person

only.

•

------------------------------------------------------------

In all cases, the green or green/yellow grounding wire

must be connected to the grounding pin of the plug, usu-

ally identified by a green screw.

Attachment plugs must comply with the Standard for

Attachment Plugs and Receptacles, UL498.

The product is considered acceptable for use only when

an attachment plug as specified is properly attached to

the supply cord.

For use on engine drives, keep in mind the above input

draw restrictions and the following precaution.

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A-5

INSTALLATION

This unit does not include a TIG torch, but one may be

purchased separately. The accessories section of this

manual lists a number of Lincoln Electric TIG torches,

and TIG Torch Starter Packs that are recommended

for use with this machine; however, any similar TIG

torch can be used. To attach the Twist-Mate Plug to a

Lincoln Torch, slide the rubber boot onto the torch

cable (enlarge the boot opening if necessary), screw

the fitting on the torch cable into the brass connector

snugly and slide the boot back over the brass connec-

tor.

OUTPUT CONNECTIONS

WARNING

ELECTRIC SHOCK can kill.

• Insulate yourself from work and

ground.

• Turn the input line Switch on the

Invertec® V311T AC/DC “off” before

connecting or disconnecting output

cables or other equipment.

STRAIN RELIEF BOOT

TIG ADAPTER

• Keep the electrode holder, TIG torch and cable

insulation in good condition and in place.

TIG TORCH POWER CABLE WITH GAS FITING

RETAINING COMPOUND

• Do not touch electrically live parts or electrode

with skin or wet clothing.

OUTPUT CONNECTION FOR STICK

WELDING (FIGURE A.2)

------------------------------------------------------------

OUTPUT AND GAS CONNECTION FOR

TIG WELDING (FIGURE A.1)

First determine the proper electrode polarity for the

electrode to be used. Consult the electrode data for

this information. Then connect the output cables to

the output terminals corresponding to this polarity.

For instance, for DC(+) welding, connect the electrode

cable (which is connected to the electrode holder) to

the “+” output terminal and the work cable (which is

connected to the work clamp) to the “-” output termi-

nal. Insert the connector with the key lining up with

the keyway, and rotate clockwise; until the connection

is snug. Do not over tighten.

The TIG Torch Twist-Mate and work cable Twist-Mate

Connectors are supplied with the welder. To connect

the cables, turn the PowerSwitch“OFF”. Connect the

torch cable Twist-Mate plug into the DC(-)

Electrode/Gas Output Receptacle on the front of the

welder and turn it clockwise until snug,(Do not

Overtighten). This is a quick connect terminal and also

provides the gas connection for the shielding gas to

the torch.

WARNING

To avoid receiving a high frequency shock, keep

the TIG torch and cable Insulation in good condi-

tion.

FIGURE A.2

WORK CABLE

___________________________________________

WORK CABLE CONNECTION

Next, connect the work cable to the “+” output terminal

in the same way.

WORK CABLE

To minimize high frequency interference, refer to

Machine Grounding and High Frequency

Interference Protection section of this manual for the

proper procedure on grounding the work clamp and

STICK ELECTRODE

HOLDER

work piece.

FIGURE A.1

TIG TORCH

WORK CLAMP

WORK CABLE

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A-6

INSTALLATION

SHIELDING GAS CONNECTION

QUICK DISCONNECT PLUG (FOR STICK ELEC-

TRODE CABLE and WORK CABLE)

Obtain the necessary inert shielding gas. Connect the

cylinder of gas with a pressure regulator and flow

gage. Install a gas hose between the regulator and

gas inlet (located on the rear of the welder). The gas

inlet has a 5/16-18 right hand female thread; CGA

#032.

A quick disconnect system is used for the welding

cable connections. The stick electrode cable will need

to have a plug attached.

1. Cut off welding cable lug, if present.

2. Remove 1.00 in. (25mm) of welding cable insula-

tion.

WARNING

CYLINDER could explode

if damaged.

3. Slide rubber boot onto cable end. The boot end

may be trimmed to match the cable diameter. Use

soap or other nonpetroleum-based lubricant to

help slide the boot over the cable, if needed.

• Keep cylinder upright and

chained to a support.

BOOT

WELDING CABLE

• Keep cylinder away from areas where it

could be damaged.

• Never allow the torch or welding electrode

to touch the cylinder.

1.00 in.

TRIM, IF REQ’D

TO FIT OVER CABLE

25 mm

• Keep cylinder away from live electrical cir-

cuits.

4. Insert copper strands into ferrule.

------------------------------------------------------------

COPPER FERRULE

WELDING CABLE

REMOTE CONTROL CONNECTION

A remote control receptacle is provided on the lower

center case front of the welder for connecting a

remote control to the machine. Refer to the Optional

Accessories section of this manual for available

remote controls.

5. Slide the copper ferrule into the brass plug.

6. Tighten set screw to collapse copper tube. Screw

must apply pressure against welding cable. The

top of the set screw will be well below the surface

of the brass plug after tightening.

SET SCREW

BRASS PLUG

COPPER TUBE

7. Slide rubber boot over brass plug. The rubber boot

must be positioned to completely cover all electri-

cal surfaces after the plug is locked into the recep-

tacle.

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B-1

OPERATION

GENERAL DESCRIPTION

Read and understand this entire section before

operating your machine.

The Invertec® V311-T AC/DC is an industrial 310 amp

arc welding power source that utilizes single or three

phase input power, to produce constant current out-

put. The welding response has been optimized for

stick (SMAW) and TIG (GTAW). The unit is ideal for

industrial applications where portability, high efficiency

and premium arc performance is important.

SAFETY INSTRUCTIONS

WARNING

The Invertec® V311-T AC/DC is a power source that

can perform the following types of welding with excel-

lent results:

ELECTRIC SHOCK can kill.

• Do not touch electrically live parts

such as output terminals, electrode

or internal wiring.

• Insulate yourself from the work and

ground.

• TIG AC with square, sinusoidal and triangular

waveforms.

• TIG DC (with high frequency or Touch Start TIG

Starting)

• Stick DC & Stick AC

• Always wear dry insulating gloves.

------------------------------------------------------------

WELDING CAPABILITY

FUMES AND GASES

can be dangerous.

The Invertec® V311-T AC/DC is rated at 310 amps,

22.4 volts, at 40% duty cycle on a ten minute basis

when connected to a 460V three phase supply line. It

is capable of higher duty cycles at lower output cur-

rents. If the duty cycle is exceeded, a thermal protec-

tor will shut off the output until the machine cools. See

Technical Specifications in A-1 for other rated outputs.

• Keep your head out of fumes.

• Use ventilation or exhaust to

remove fumes from breathing

zone.

The Invertec® V311-T AC/DC is recommended for

stick welding with such popular electrodes as

Fleetweld 5P and 5P+ (E6010), Fleetweld 35 (E6011),

Fleetweld 37 (E6013), Fleetweld 180 (E6011) and

Excalibur 7018.

------------------------------------------------------------

WELDING, CUTTING and

GOUGING SPARKS

can cause fire or explosion

• Keep flammable material away.

LIMITATIONS

• Do not weld, cut or gouge on

containers that have held com-

bustibles.

The Invertec® V311-T AC/DC is not recommended for

pipe thawing.

------------------------------------------------------------

ARC RAYS

can burn.

• Wear eye, ear and body

protection.

------------------------------------------------------------

Only qualified personnel should operate this

equipment. Observe all safety information

throughout this manual.

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B-2

OPERATION

REAR CONTROL PANEL (FIGURE B.1)

WARNING

• I1: Off/On switch turns on the electric power to

the welder. It has two positions, "O" off, and

"I" on.

------------------------------------------------------------

* With "l1" in the "I" (ON) position, the welding

machine is operational and there is voltage between

the positive (+) and negative (-) Terminals in stick

welding. In TIG, the welding process needs a trigger

closure command at the remote control connec-

tion.(Usually via an Arc Start Switch or Foot Amptrol)

* The welder is connected to the supply even if the

“l1” (Power Switch) is in the "O" (Off) position, and

therefore there are electrically live parts inside the

power source. Carefully follow the instructions given

in this manual.

FIGURE B.1

* 1 : Supply cable

* 2 : Gas attachment

l1 : Power Switch

LOWER CONTROL PANEL (FIGURE B.2)

FIGURE B.2

3. Electrode Connection (Positive) - For quick dis-

1. Electrode Connection (Negative) - For quick dis-

connect system using Twist-Mate cable plugs with

gas pass through for TIG Torches.

connect system using Twist-Mate cable plugs.

2. Remote Control Connector - For the connection

of a Lincoln Foot Amptrol, Hand Amptrol or Arc

Start Switch. See the ACCESSORIES section for

available options.

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B-3

OPERATION

USER INTERFACE OVERVIEW AND OPERATION:

FIGURE B.3

N V E R T E C

V 3 1 1 -T AC/DC

The Invertec® V311-T AC/DC User interface con-

sists of the following (Refer to Figure B.3):

b. General Alarm – Yellow LED which is lit when

faults exist with the power source or optional

cooler, such as over temperature, coolant

blockage, etc.

1. DYNAMIC LCD DISPLAY

2. STATUS LED LIGHTS

c. Output On (No VRD) – This status light will illu-

minate red whenever the output in electrically

hot and the voltage level is above the VRD

threshold value.

a. VRD On (Voltage Reduction Device)

Status Light- Voltage reduction device can

be enabled from the set-up menu so that an

output voltage limit can be set that reduces

the output open circuit voltage to a safer level

when not welding. If enabled when the

machine is sitting idle in stick mode the

Green VRD on light will illuminate to indicate

the voltage is reduced below the set limit. If

the VRD device is not enabled (factory

default) from the set up menu or while weld-

ing the red VRD off light will illuminate to

show that output voltage is present above the

limit.

3. A seven segment LED display (H)

4. PUSH BUTTON/ROTARY ENCODER

5. MODE PUSH BUTTONS (A-D)

a. Weld Mode (A)

b. Trigger Mode (B)

c. TIG Pulse Mode (C)

d. Memory Location Select (D)

6. PUSH BUTTONS (E, F)

e. Memory Save (E)

Note: The green VRD on light will illuminate in TIG

mode until the output is triggered even when VRD

is disabled. Also note that enabling VRD to reduce

the output voltage can make striking a stick elec-

trode more difficult.

f. Memory Recall (F)

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B-4

OPERATION

97A

DYNAMIC LCD DISPLAY

100Hz

75%

The Dynamic display is divided into several sections

(Refer to Figure B.4):

10A

0.2s

10.0s

72A

1. Weld Sequence

Diagram

4.3Hz

50%

0.0s

14A

0.2s

5.0s

10.0s

50%

2. Parameter

Display

Figure B.4b

70A

0.2Hz

50%

100Hz

3. Mode Push Button

Indicators

75%

50%

10A

10.0s

10A

0.2s

Figure B.4

1. The Weld Sequence Diagram shows the various

parameters that can be selected and adjusted and

their preset values. As the push button/rotary

encoder is pressed a triangular shaped flashing

indicator will highlight the adjustable parameter on

the sequence diagram in bold. Each press of the

encoder will scroll to the next selected parameter

sequentially. Rotating the push button encoder will

change the selected parameter value. The display

is dynamic in that adjusting the selected parameter

dynamically changes the shape of the sequence

diagram. After 5 seconds of inactivity the selected

parameter will default back to the weld output amps

parameter. Depressing the button again will

remember the last selected parameter and begin

the sequential scroll from that parameter.

. .

Figure B.4c

2. The Parameter Display Section shows the select-

ed parameter its display icon and preset value. To

change the value, rotate the push button/rotary

encoder. Some parameters like AC Frequency have

an Enhanced Icon Display that shows the effect of the

varying parameter on the arc and/or weld bead profile.

As these parameters are adjusted an indicator will

move between the minimum and maximum icon to

show the relative effect of that parameter. Pulse

Frequency shown in Figure B.4c is an example of the

enhanced icon display. Refer to Table B.1 for a list of

Enhanced Icons.

Three Sequence Diagram types exist:

• STICK (See Figure B.4a)

• TIG (See Figure B.4b)

• Pulse TIG (See Figure B.4c)

80%

30%

Figure B.4a

Table B.1

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B-5

OPERATION

3. The Mode Push Buttons and Indicators show the

current selection made by the corresponding weld

push buttons (A-F). Refer to Table B.2 for a full list

of all parameters and their ranges. Below is a

description of the function of each push button and

display:

Two-Step with Foot Pedal -This

mode is only available when the

machine senses a remote amperage

control device is plugged in. It is used

when a foot or hand amptrol is

plugged in. When this trigger mode is

selected, upslope and downslope are

set to zero and non-adjustable since

the operator would manually adjust

ramp up and ramp down of the weld-

ing current using the amptrol. The

start and finish currents are linked

together and are repesented by a

parameter called Minimum Current.

(Refer to Figure B.5)

A. WELDING MODES

DC TIG - DC TIG welding with high

frequency arc initiation.

AC TIG - AC TIG welding with high

frequency arc initiation.

DC Touch Start TIG - DC TIG welding with

lift tig arc initiation.

Four Step - This mode is intended to

be used with an arc start switch. It will

not function properly in remote mode

with a foot or hand amptrol plugged

in. In four step operation depressing

an arc start switch will cause the

machine to initiate the arc at the start

current level. When the switch is

released the machine will ramp up to

the maximum current over the ups-

lope time. Depressing the arc start

switch again causes the output to

ramp down to the finish current level

over the downslope time. Finally

releasing the arc start switch causes

the arc to go out. (Refer to Figure B.6)

Stick crisp mode - for Cellulosic electrodes

like Exx10.

Stick soft mode - for E7018 Low Hydrogen

electrodes.

AC Stick Mode - for AC Stick Electrodes.

Table B.2

B. TIG TRIGGER MODES

Two Step with Arc Start Switch -

This mode is available in local or

remote modes but is typically used

with an arc start switch. Depressing

the arc start switch will initiate the arc

at the start current level and ramp up

the output to the maximum current

over the time set by the upslope time.

Releasing the switch will cause the

output amperage to ramp down to the

finish current over the downslope time

and then turn off the output. In this

mode the start current and finish cur-

rent can be independently set and

upslope and downslope times are

adjustable. (Refer to Figure B.5)

(3A)

PRE-FLOW

--GAS ON--

FIGURE B.6 4-STEP OPERATION SEQUENCE

(1)

(2)

(3)

PRE-FLOW

--GAS ON--

FIGURE B.5 2-STEP OPERATION SEQUENCE

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B-6

OPERATION

Bi-Level Current – (If Enabled from

the Setup Menu) Depressing an arc

start switch and releasing will initiate

the arc to current level A1.

Depressing and releasing the arc

Start switch again will toggle to cur-

rent level A2. Each depressing and

releasing of the switch will toggle

between A1 and A2. Depressing and

holding the switch in will initiate the

down slope to the finish current level

and finally releasing the trigger will

extinguish the arc.

D, E, & F. Memory Operation – Pressing and releas-

ing the memory location (D) button will scroll through

memory locations 1 through 10. When a memory is

recalled or saved the memory location display will

change to reversed text indicating that the current

memory parameters are active.

Normal Display

(Unselected)

Reversed Display

(Selected)

Saving to Memory

Spot Timer - (If Enabled from the

Setup Menu) Selecting this trigger

mode will enable a spot timer para-

meter setting to be displayed as a

welding parameter. Once the arc is

establish the machine will weld for the

time period set by the spot timer para-

meter setting. The machine will follow

the functionality of two-step in that

start current, up-slope, down-slope

and finish current can all be adjusted.

• Press and hold Memory Save Button (E) until the

memory location display indicator (D) changes to a

reverse text indicating that the current parameters

are the ones in the actively selected memory.

Recalling from Memory

• Press and hold the memory recall button (F) until

the memory location display indicator (D) changes

to reversed text indicating that the stored parame-

ters are actively recalled.

When memory parameters are actively selected,

the display indicator will remain reversed until a

welding parameter is changed with the encoder

knob or until the memory location button is pressed

to scroll to a different memory location

STICK TRIGGER MODES

Local - In this mode the machine

ignores any remote that is plugged.

The machine will weld at the preset

value set at the panel of the machine.

Local/Remote Operation – The Invertec® V311-T

AC/DC, when in TIG mode, will automatically sense

when the machine has a remote device plugged into

the 6 pin MS-type connector-like a remote pendant or

a foot amptrol. If a remote device is plugged in, the

machine will automatically function in remote mode. If

no device is plugged in, the machine will function in

local mode.

Remote - Allows the amperage to be

set with a remote potentiometer.

C. TIG PULSE MODES

Pulse On - Turns on pulse welding in

TIG mode. Changes the sequence

diagram to Pulse TIG and allows the

adjustment of the following added

parameters:

In remote mode, the operation of the machine is

slightly different depending on whether the remote

device is a foot amptrol or a remote pendant. To let

the machine know what type of device is plugged in,

the operator must select the appropriate device from

the trigger mode button. (See Trigger mode descrip-

tions above for details on the difference. In stick

mode the second button on the control panel selects

local or remote operation manually. This is required

so that the user does not need to detach a foot amp-

trol to use the machine in STICK mode.

• Pulse Frequency

• % Peak Time

• Background Current

Pulse Off - Turns off pulse welding in

TIG.

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B-7

OPERATION

WELDING PARAMETERS

The following parameters are adjustable on the Invertec® V311-T AC/DC. (See Table B.3)

Table B.3

Parameter

Symbol

Parameter Name

Parameter Range

Min

unit

Max

Pre-Flow

Sec

Start Current

Finish Current

Amps

Min.

Min

Peak

Min. Current

Amps

Min

Peak

Upslope

Sec

Downslope

Spot Time

Sec

Off

Max. Current

Amps

310

Pulse Frequency

0.20

2500

95%

Background Current

%Amps

% Peak Time

Postflow

AC Frequency

AC Balance

Sec

200

% EN

Hot Start

Arc Force

500

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B-8

OPERATION

USER MENU SET UP PARAMETERS

Many additional parameters can be modified via the

Set Up Menu. To access the Set Up Menu press and

hold the rotary encoder knob for several seconds until

the following screen appears: (See figure B.7)

FIGURE B.7b

FIGURE B.7

Rotating the encoder knob will scroll through the setup

parameters shown in Table B.4. Selected parameters

are changed in one of two ways:

For parameters like background current (shown in

Figure B.7a) the change is made by the mode push

button. In this example you can toggle between set-

ting background current as either a % or as absolute

amperage. Other parameters like selectable wave

shape (shown in Figure B.7b) are changed by

depressing the encoder knob until the parameter is

flashing. Rotating the knob changes the parameter

and then the change is saved by pressing the encoder

knob again. Once all changes are made you can exit

and save by pressing the exit icon button or you can

exit the set up menu without saving your changes by

depressing the hooked arrow button.

FIGURE B.7a

INVERTEC® V311-T AC/DC TIG

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B-9

OPERATION

TABLE B.4

SET UP MENU PARAMETERS

Parameter

Symbol

^{See Fi}0^{gure B.7}

Selection/

* Default Value

Parameter

Number

Description

Set Up menu Exit

Reset All Parameters

% *

Amps

Amps*

% *

Amps

Start Current Set Unit

Bi-Level Current 2 Set Unit

Pulse Background Current Units

Amps*

Finish Current Set Unit

15 amps*

307

DC TIG HF STRIKE CURRENT

30 amps*

306

307

DC LIFT TIG STRIKE CURRENT

AC TIG HF TIG STRIKE CURRENT

Enabled*

Disabled

214

2-Step trigger re-start

Enabled

Disabled*

215

101

4-Step trigger re-start

AC Waveform Shape

Square*

Sine

Triangle

Enabled

Disabled *

998

999

Bi-Level Trigger

Enabled

Disabled *

Spot Timer Trigger

0ff*

Enabled to 12V

Enabled to 20V

Enabled to 30V

201

VRD Limit

VRD

500

552

553

Not Used

Speaker Volume

Display Contrast

0 to 10

10*

-20 to 20 10*

English*

French

554

Display Language

Spanish

INVERTEC® V311-T AC/DC TIG

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B-10

OPERATION

TABLE B.4 (Continued)

SET UP MENU PARAMETERS

Parameter

Symbol

Selection/

* Default Value

Parameter

Number

Description

Display Off

Display in 7 Segment LED

Display*

751

752

Output Current Displayed

Output Voltage Displayed

Display Off*

Display in 7 Segment LED

Display

Display Off*

Display in 7 Segment LED

Display

753

754

Input Phase Displayed

Input Voltage Displayed

Display Off*

Display in 7 Segment LED

Display

This function sets the initial start energy

limit. Set this number to a higher setting

than the factory default if needed to

improve starting of large diameter tungsten

electrodes.

0.5 to 1.0 manual start energy setting.

1.2 to 5.0 = max. Incrementing limit.

(See Note)

104

AC TIG Start Power (for AC TIG only)

Note: The machine will try to start the arc at

a start power of 1. If the arc does not

establish it will incrementally increase

the start power and try to restrike up

to the set limit.

OPTIONAL COOL-ARC 35 WATER

COOLER

IMPORTANT: If the Cool-Arc 35 water cooler is

connected to the Invertec® V311-T AC/DC and an

air cooled torch is connected instead of a water

cooled torch the Cool-Arc 35 will sense a coolant

blockage resulting in a cooler error.

The optional Cool-Arc 35 water cooler is designed to

operate in communication with the Invertec® V311-T

AC/DC. Refer to the Cool-Arc 35 operator manual for

installation instructions and a complete description of

its operation.

In this case the cooler can be turned to the “off mode”

by depressing and holding the push button on the

cooler until the cooler’s display reads “oo”. To turn

the cooler back on you can depress and hold the

Cool-Arc 35 push button until the cooler’s digital dis-

play reads coolant temperature in degrees Celsius.

Turning the Invertec® V311-T AC/DC off and on again

will automatically turn the water cooler back on as

well.

When the Invertec® V311-T AC/DC is powered ON

the Cool-Arc 35 will automatically power ON as well.

The Cool-Arc 35 monitors pressure and temperature

and will adjust the pump speed accordingly to cool the

torch. If a blockage of coolant or loss of coolant is

sensed both the Cool-Arc 35 and Invertec® V311-T

AC/DC will display an error and turn off the Invertec®

V311-T AC/DC’s output.

INVERTEC® V311-T AC/DC TIG

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B-11

OPERATION

TIPS FOR IMPROVED TIG STARTING

If start power is set within the incremental range

mode, the machine tries to start electrode positive at a

relative setting of 1. If the arc fails to establish it will

repeat the start sequence each time by incrementing

the amount of electrode positive energy by 10% (0.1)

up to the start power limit setting or until the arc estab-

lishes. For comparison a start power limit of 2 if

reached will have twice the energy of the starting point

of 1. If the tungsten has too much of a ball on it or

appears to be super heating during starts the start

power limit can be turned down. In the manual setting

range, the start power will not keep incrementing up to

a limit. Instead the start power stays at whatever level

is set. For example a setting of 0.5 will start the

machine with half the normal starting energy of 1.

1. Start Current:

For the best AC or DC TIG starting characteristics it

may be necessary to adjust the start current on the

front panel depending on the tungsten size. In gener-

al, larger tungsten requires more energy to establish

an arc than smaller tungsten. As an initial guideline,

set the start current according to the following recom-

mendations:

Tungsten Size (in.)

0.020, 0.040 1/16th

3/32 th

Start Current (Amps)

6-10 Amps

10-12 Amps

1/8th

12-15 Amps

STICK CRISP MODE DYNAMIC CURRENT

REGULATION

2. DC Strike Current:

Aside from start current, DC strike current can also be

adjusted from the set-up menu to get a hotter or softer

start when DC TIG welding. Strike current is an initial

spike of current that lasts a few milliseconds before

the machine goes to start current. In general, the fac-

tory default of 15 amps works for most applications. If

welding on very thin materials with small diameter

tungsten, strike current can be turned down to mini-

mize burning through the weld material. Like-wise for

larger diameter tungsten strike current can be turned

up to put more energy in the tungsten.

When running E6010 electrodes DC Crisp mode is

recommended. The Invertec® V311-T AC/DC has a

special dynamic current regulation that is ideal for the

whipping technique common to E6010 electrodes.The

machine regulates the welding current based on

changes in arc length. As the arc length is increased

and the arc voltage increases, the machine will reduce

its welding current below the set point. As the arc

length is decreased and the arc voltage decreases the

machine will increase its current.

FIGURE B.8

3. AC TIG Start Power:

For AC TIG welding AC start power can be adjusted

from the set-up menu to aid starting if required. The

Invertec® V311-T AC/DC when set to AC TIG will try

to initiate the arc with positive polarity until the arc is

established. Positive polarity puts more energy into

heating the tungsten but the drawback is that is can

cause the tungsten to ball excessively or to super

heat. Note super heating of the tungsten can be

noticed if the tungsten is glowing red or orange during

starting. Start Power can be adjusted within two

ranges:

Set Point

Weld

Current

Decrease

Increase

Arc Length

Average Arc Length

Range

0.5 to 1

1.2 to 5.0

Mode

Manual Setting

Incremental setting

Arc Force Control – Arc Force is a setting that helps

reduce sticking the electrode into the weld puddle.

Increasing the arc force percentage will provide a

higher boost of current when the electrode is about to

short into the weld puddle. In Stick Crisp mode since

the current is dynamically regulated based on the arc

voltage, shorting the electrode to the work will be rare

- therefore, adjustments to the arc force percentage

will not be as noticeable in Stick Crisp mode com-

pared to Stick Soft mode.

INVERTEC® V311-T AC/DC TIG

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C-1

ACCESSORIES

TIG TORCH STARTER KITS

OPTIONAL ACCESSORIES

AND COMPATIBLE EQUIPMENT

K2266-1 – TIG-Mate 17 Air Cooled TIG Torch

Starter Pack. One complete easy-to-order kit pack-

aged in its own portable carrying case. Includes: PTA-

17 torch, parts kit, Harris flowmeter/regulator, 10 ft.

gas hose, Twist-Mate™ adapter, work clamp and

cable.

Field Installed

K857 - Remote Output Control - For Stick welding.

Portable current control provides the same range as

the current control on the welder. Consists of a 6-pin

connector which plugs into the remote control connec-

tor. 25 foot cable length.

K2267-1 – TIG-Mate 20 Water-Cooled TIG Torch

Starter Pack. One complete easy-to-order kit pack-

aged in its own portable carrying case. Includes:

PTW-20 torch, parts kit, Harris flowmeter/regulator, 10

ft. gas hose, Twist-Mate™ adapter, work clamp and

cable, and 10 ft. water hose.

K870 - Foot Amptrol^tmfor TIG welding. The foot

Amptrol energizes the output and controls the output

remotely. The Foot Amptrol connects directly to the 6-

pin remote control connector.

Magnum® TIG Torches – The following standard

Magnum® TIG torches may be used with the

Invertec® V311-T AC/DC for Lincoln’s full line of TIG

torches including flex head models consult publication

E12.150.

K963-3 - Hand Amptrol^tmfor TIG welding. The hand

Amptrol energizes the output and controls the output

remotely. The Hand Amptrol connects directly to the

6-pin remote control connector.

K814 - Arc Start Switch - Energizes the output for

TIG welding if remote output control of the amperage

is not desired. It allows on/off TIG welding at the

amperage set by the Current Control on the control

panel. When using the Arc Start Switch set the Output

Control to the “LOCAL” position.

• K1781-1 PTA-9 12.5 ft.(3.8m) Air-Cooled 125A

• K1781-3 PTA-9 25 ft.(7.6m) Air-Cooled 125A

• K1782-1 PTA-17 12.5 ft.(3.8m) Air-Cooled 150A

• K1782-3 PTA-17 25 ft.(7.6m) Air-Cooled 150A

• K1783-1 PTA-26 12.5 ft.(3.8m) Air-Cooled 200A

• K1783-3 PTA-26 25 ft.(7.6m) Air-Cooled 200A

K2630-1 - Cool-Arc® 35 Water Cooler- Attaches

underneath the Invertec® V311-T AC/DC and electri-

cally connects to the Invertec® V311-T AC/DC. This

smart cooler varies its speed based on coolant tem-

perature and monitors coolant pressure.

• K1784-3 PTW-20 12.5 ft.(3.8m) Water-Cooled 250A

• K1784-4 PTW-20 25 ft.(7.6m) Water-Cooled 250A

• K1784-1 PTW-18 12.5 ft.(3.8m) Water-Cooled 350A

• K1784-2 PTW-18 25 ft.(7.6m) Water-Cooled 350A

K2694-1 Inverter Cart- Conveniently holds the Cool-

Arc 35 and Invertec® V311-T AC/DC power source.

Features a tool storage tray for convenience and a

cylinder platform to hold a gas bottle

NOTE: Each torch requires a Twist-Mate™ adapter,

collets, collet bodies, and nozzles and are not includ-

ed and must be ordered separately.

INVERTEC® V311-T AC/DC TIG

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C-2

ACCESSORIES

CABLE PLUGS

K852-70 - Cable Plug Kit for 1/0-2/0 cable. Attaches

to welding cable to provide quick disconnect from

machine.

K1622-1 Twist-Mate adapter for PTA-9 & 17 Air-

Cooled TIG torches – Adapter for PTA-9 or PTA-17

TIG torches with one-piece cable. The quick connect

plug provides connection for both gas and welding

current.

K1622-3 Twist-Mate adapter for PTA-26 Air-Cooled

TIG torches – Adapter for PTA-26 TIG torches with

one-piece cable. The quick connect plug provides

connection for both gas and welding current.

K1622-4 – Twist-Mate adapter for Water-Cooled TIG

torches. Adapter for PTW-18 and -20 Torches.

TIG Torch Parts Kits - Parts kits are available for the

TIG torches. These kits include back cap, collets, col-

let bodies, nozzles and tungstens.

Order KP510 for PTW-20 Water-cooled torches

Order KP507 for PTA-9 torches

Order KP508 for PTA-17 torches

Order KP509 for PTA-26 & PTW-18 torches

Order KP2414-1 Gas Lens Parts kit for PTA-9 torches

See publication E12.150 for parts kits breakdown.

Cut Length Consumables - TIG welding filler metals

are available for welding stainless steel, mild steel,

aluminum and copper alloys. See publication C9.10.

INVERTEC® V311-T AC/DC TIG

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D-1

MAINTENANCE

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

• Have an electrician install and ser-

vice this equipment.

• Turn the input power off at the

fuse box, disconnect or unplug

supply lines and allow machine to

sit for five minutes minimum to

allow the power capacitors to dis-

charge before working inside this

equipment.

• Do not touch electrically hot parts.

----------------------------------------------------------------------

INPUT FILTER CAPACITOR

DISCHARGE PROCEDURE

WARNING

The machine has internal capacitors which are

charged to a high voltage during power-on condi-

tions. This voltage is dangerous and must be dis-

charged before the machine can be serviced.

Discharging is done automatically by the machine

each time the power is switched off. However, you

must allow the machine to sit for at least 5 min-

utes to allow time for the process to take place.

------------------------------------------------------------

ROUTINE MAINTENANCE

Prevent metal powder from accumulating near the

aeration fins and over them.

Carry out the following periodic controls on the power

source:

• Clean the power source inside by means of low-

pressure compressed air.

• Check the electric connections and all the connec-

tion cables.

• Always use gloves in compliance with the safety

standards.

INVERTEC® V311-T AC/DC TIG

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E-1

TROUBLESHOOTING

HOW TO USE TROUBLESHOOTING GUIDE

WARNING

Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.

Unauthorized repairs performed on this equipment may result in danger to the technician and

machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical

Shock, please observe all safety notes and precautions detailed throughout this manual.

__________________________________________________________________________

This Troubleshooting Guide is provided to help you

locate and repair possible machine malfunctions.

Simply follow the three-step procedure listed below.

Step 3. RECOMMENDED COURSE OF ACTION

This column provides a course of action for the

Possible Cause, generally it states to contact your

local Lincoln Authorized Field Service Facility.

Step 1. LOCATE PROBLEM (SYMPTOM).

Look under the column labeled “PROBLEM (SYMP-

TOMS)”. This column describes possible symptoms

that the machine may exhibit. Find the listing that

best describes the symptom that the machine is

exhibiting.

If you do not understand or are unable to perform the

Recommended Course of Action safely, contact your

local Lincoln Authorized Field Service Facility.

Step 2. POSSIBLE CAUSE.

The second column labeled “POSSIBLE CAUSE” lists

the obvious external possibilities that may contribute

to the machine symptom.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

INVERTEC® V311-T AC/DC TIG

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E-2

TROUBLESHOOTING

Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

PROBLEMS IN STICK WELDING

Excessive spatter

1. Long arc

2. High current

Craters

1. Fast movement of the electrode

away from piece.

Inclusions

1. Poor cleanliness or distribution of

the Welding passes.

2. Improper movement of the elec-

trode.

Insufficient penetration

1. High progression speed.

2. Welding current too low.

3. Narrow chamfering.

If all recommended possible areas of

misadjustment have been checked

and the problem persists, Contact

your local Lincoln Authorized Field

Service Facility.

Sticking

Porosity

Cracks

1. Arc too short.

2. Current too low.

1. Humidity in electrode.

2. Long arc.

1. Current too high.

2. Dirty materials.

3. Hydrogen in weld (present on

electrode coating).

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

INVERTEC® V311-T AC/DC TIG

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E-3

TROUBLESHOOTING

Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

PROBLEMS IN TIG WELDING

Oxidation

1. lnsufficient gas.

2. No protection on the back side.

Tungsten inclusions

1. lncorrect electrode sharpening.

2. Electrode too small.

3. Operating failure (contact of the

tip with the workpiece).

Porosity

1. Dirt on the edges.

2. Dirt on the filler material.

3. Excessive travel speed.

4. Current intensity too low.

5. Insuffient gas flow rate

If all recommended possible areas of

misadjustment have been checked

and the problem persists, Contact

your local Lincoln Authorized

Field Service Facility.

Hot cracking

1 Unsuitable filler material.

2. High heat supply.

3. Dirty materials.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

INVERTEC® V311-T AC/DC TIG

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E-4

TROUBLESHOOTING

Observe all Safety Guidelines detailed throughout this manual

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

ELECTRICAL FAILURES

Machine fails to come on

(LCD screen and LED display do

not illuminate)

1. No Input Voltage.

2. Faulty supply plug or cable.

3. Internal fuse blown.

4. Input voltage not within range

Power output incorrect

No output current

1. Incorrect setting up of the welding

parameters.

2. Low mains supply voltage

1. E01, E02, E03 DISPLAYED, and

the yellow control panel LED on.

• Equipment Overheat. Allow

machine to cool. The power

should remain on so the fan can

maintain airflow and cool the

machine

If all recommended possible areas of

misadjustment have been checked

and the problem persists, Contact

your local Lincoln Authorized

Field Service Facility.

2. E38 DISPLAYED• Input supply

voltage dipped low.

3. E39, E40 DISPLAYED

• Input supply voltage out of range

or loss of phase .

4. E14, E15, or E18 DISPLAYED

• Internal memory errors. (Contact

your local Lincoln Electric

Authorized Service Facility.)

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

INVERTEC® V311-T AC/DC TIG

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E-5

TROUBLESHOOTING

The Invertec® V311-T AC/DC, when a fault condition is

detected, displays on the graphics LCD an alarm notification

composed of:

ALARM ICON + ALARM CODE + ALARM TYPE ICON

Exx

When a fault condition is detected, the power source and the

cooler are switched in safety mode, it means the welding

operation are stopped. To recover from a fault condition, it is

necessary to remove the cause and exit the safety mode

depressing the exit key button on the UI.

ALARM ID CODES:

E01, E02, E03

Temperature alarm

E10

Boost/Inverter overcurrent

System configuration alarm

Program not valid alarm

E11, E19

E14, E15, E18

Communication alarm (µP-DSP)-Type 1

E17

E20

Memory fault alarm

Data loss alarm

E21

E22

Communication alarm (µP-DSP)-Type 2

E27

E28

Memory_1 fault alarm

Memory_2 fault alarm

Output power alarm

Under voltage alarm

E29

E38

System power supply alarm

Coolant shortage – clogged pipe alarm

Coolant temperature alarm

E39,E40

E43

E44

E99

General alarm

INVERTEC® V311-T AC/DC TIG

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F-1

WIRING DIAGRAMS

INVERTEC® V311-T AC/DC TIG

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G Do not touch electrically live parts or

electrode with skin or wet clothing.

G Insulate yourself from work and

ground.

G Keep flammable materials away.

G Wear eye, ear and body protection.

WARNING

Spanish

G No toque las partes o los electrodos G Mantenga el material combustible

G Protéjase los ojos, los oídos y el

bajo carga con la piel o ropa moja-

da.

G Aislese del trabajo y de la tierra.

fuera del área de trabajo.

cuerpo.

AVISO DE

PRECAUCION

French

G Ne laissez ni la peau ni des vête-

ments mouillés entrer en contact

avec des pièces sous tension.

G Gardez à l’écart de tout matériel

inflammable.

G Protégez vos yeux, vos oreilles et

votre corps.

ATTENTION

G Isolez-vous du travail et de la terre.

German

G Berühren Sie keine stromführenden

Teile oder Elektroden mit Ihrem

Körper oder feuchter Kleidung!

G Isolieren Sie sich von den

G Entfernen Sie brennbarres Material! G Tragen Sie Augen-, Ohren- und Kör-

perschutz!

WARNUNG

Elektroden und dem Erdboden!

Portuguese

G Não toque partes elétricas e elec-

trodos com a pele ou roupa molha-

da.

G Mantenha inflamáveis bem guarda- G Use proteção para a vista, ouvido e

dos.

corpo.

ATENÇÃO

G Isole-se da peça e terra.

Japanese

Chinese

Korean

Arabic

READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE

USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.

SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS

CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR.

LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A

ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.

LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER-

STELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.

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G Keep your head out of fumes.

G Use ventilation or exhaust to

remove fumes from breathing zone.

G Turn power off before servicing.

G Do not operate with panel open or

guards off.

WARNING

Spanish

G Los humos fuera de la zona de res-

piración.

G Mantenga la cabeza fuera de los

humos. Utilice ventilación o

aspiración para gases.

G Desconectar el cable de ali-

mentación de poder de la máquina

antes de iniciar cualquier servicio.

G No operar con panel abierto o

guardas quitadas.

AVISO DE

PRECAUCION

French

G Débranchez le courant avant l’entre- G N’opérez pas avec les panneaux

tien.

G Gardez la tête à l’écart des fumées.

G Utilisez un ventilateur ou un aspira-

teur pour ôter les fumées des zones

de travail.

ouverts ou avec les dispositifs de

protection enlevés.

ATTENTION

German

G Strom vor Wartungsarbeiten

abschalten! (Netzstrom völlig öff-

nen; Maschine anhalten!)

G Anlage nie ohne Schutzgehäuse

oder Innenschutzverkleidung in

Betrieb setzen!

G Vermeiden Sie das Einatmen von

Schweibrauch!

G Sorgen Sie für gute Be- und

Entlüftung des Arbeitsplatzes!

WARNUNG

Portuguese

G Não opere com as tampas removidas.

G Desligue a corrente antes de fazer

serviço.

G Mantenha-se afastado das partes

moventes.

G Não opere com os paineis abertos

ou guardas removidas.

G Mantenha seu rosto da fumaça.

G Use ventilação e exhaustão para

remover fumo da zona respiratória.

ATENÇÃO

G Não toque as partes elétricas nuas.

Japanese

Chinese

Korean

Arabic

LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS

PRÁTICAS DE SEGURANÇA DO EMPREGADOR.

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• World's Leader in Welding and Cutting Products •

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

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