Lincoln Electric Welding System 205 TAC DCTIG User Manual

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IM937  
INVERTEC®V205-T DC & V205-T AC/DC TIG  
April, 2007  
For use with machines having Code Numbers:  
11426, 11430  
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 thought-  
ful operation on your part. DO  
NOT INSTALL, OPERATE OR  
REPAIR THIS EQUIPMENT  
WITHOUT READING THIS  
MANUAL AND THE SAFETY  
PRECAUTIONS CONTAINED  
THROUGHOUT. And, most  
C
AC/D  
T
5-T  
20  
V20  
importantly, think before you act  
and be careful.  
TEC  
INVER  
R
OPERATOR’S MANUAL  
Copyright © 2007 Lincoln Global Inc.  
• 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  
• AC Welder with Reduced Voltage Control.  
ventilation and/or exhaust at the arc to keep  
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 below Threshold Limit Values (TLV)  
using local exhaust or mechanical ventilation. In  
confined spaces or in some circumstances, 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.  
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.f. Maintain the electrode holder, work clamp, welding cable and  
welding machine in good, safe operating condition. Replace  
damaged insulation.  
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.  
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.  
3.j. Also see Items 6.c. and 8.  
5.e. Read and understand the manufacturerʼs instructions for this  
equipment and the consumables to be used, including the  
material safety data sheet (MSDS) and follow your  
employerʼs safety practices. MSDS forms are available from  
your welding distributor or from the manufacturer.  
5.f. Also see item 1.b.  
AUG 06  
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SAFETY  
CYLINDER may explode  
if damaged.  
WELDING and CUTTING  
SPARKS can  
cause fire or explosion.  
6.a. Remove fire hazards from the welding area.  
7.a. Use only compressed gas cylinders  
containing the correct shielding gas for the  
If this is not possible, cover them to prevent  
process used and properly operating  
the welding sparks from starting a fire.  
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 manufacturerʼs  
recommendations.  
8.c. Ground the equipment in accordance with the U.S. National  
Electrical Code and the manufacturerʼs 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.  
Jan, 07  
6.j. Do not use a welding power source for pipe thawing.  
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SAFETY  
PRÉCAUTIONS DE SÛRETÉ  
6. Eloigner les matériaux inflammables ou les recouvrir afin de  
prévenir tout risque dʼincendie 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 dʼincendie.  
Sûreté Pour Soudage A LʼArc  
8. Sʼassurer que la masse est connectée le plus prés possible  
de la zone de travail quʼil est pratique de le faire. Si on place  
la masse sur la charpente de la construction ou dʼautres  
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 dʼincendie ou dʼechauffement des chaines et des  
câbles jusquʼà ce quʼils se rompent.  
1. Protegez-vous contre la secousse électrique:  
a. Les circuits à lʼélectrode 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 sʼisoler 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.  
d.Ne jamais plonger le porte-électrode dans lʼeau 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.  
f. Si on utilise la machine à souder comme une source de  
courant pour soudage semi-automatique, ces precautions  
pour le porte-électrode sʼapplicuent aussi au pistolet de  
soudage.  
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  
dʼopérations de dégraissage, nettoyage ou pistolage. La  
chaleur ou les rayons de lʼarc peuvent réagir avec les vapeurs  
du solvant pour produire du phosgéne (gas fortement toxique)  
ou autres produits irritants.  
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.  
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 nʼimporte quelle partie  
du corps.  
PRÉCAUTIONS DE SÛRETÉ POUR  
LES MACHINES À SOUDER À  
TRANSFORMATEUR ET À  
REDRESSEUR  
3. Un coup dʼarc peut être plus sévère quʼun coup de soliel,  
donc:  
a. Utiliser un bon masque avec un verre filtrant approprié  
ainsi quʼun verre blanc afin de se protéger les yeux du ray-  
onnement de lʼarc et des projections quand on soude ou  
quand on regarde lʼarc.  
b. Porter des vêtements convenables afin de protéger la  
peau de soudeur et des aides contre le rayonnement de  
lʻarc.  
c. Protéger lʼautre personnel travaillant à proximité au  
soudage à lʼaide dʼécrans appropriés et non-inflammables.  
1. Relier à la terre le chassis du poste conformement au code de  
lʼélectricité et aux recommendations du fabricant. Le dispositif  
de montage ou la piece à souder doit être branché à une  
bonne mise à la terre.  
2. Autant que possible, Iʼinstallation et lʼentretien du poste seront  
effectués par un électricien qualifié.  
3. Avant de faires des travaux à lʼinterieur de poste, la debranch-  
er à lʼinterrupteur à la boite de fusibles.  
4. Des gouttes de laitier en fusion sont émises de lʼarc de  
soudage. Se protéger avec des vêtements de protection libres  
de lʼhuile, 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 lʼon pique le laitier.  
Mar. ʻ93  
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SAFETY  
EN 60974-10  
V205-T DC & V205-T AC/DC TIG  
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SAFETY  
EN 60974-10:  
V205-T DC & V205-T AC/DC TIG  
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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 customerʼs 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.  
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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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  
230V Input.....................................................................................................................A-4  
115V Input.....................................................................................................................A-4  
Attachment Plug Installation, Engine Driven 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  
Controls and Settings, 2 Step and 4 Step Tig Sequence ..............................................B-3,B-5  
Welding Parameter Defaults and Ranges............................................................................B-5  
Set Up Menu ........................................................................................................................B-6  
Output Limitations ...............................................................................................................B-7  
DC Tig Welding ...................................................................................................................B-7  
Welding Polarity ...................................................................................................................B-7  
DC Electrode Negative Polarity.....................................................................................B-7  
DC Electrode Positive Polarity ......................................................................................B-8  
D.C.-Pulsed TIG............................................................................................................B-8  
A.C. (Alternating Current)..............................................................................................B-8  
A.C.-Pulsed TIG (Alternating Current Pulsed) ..............................................................B-8  
Steel Tig Welding .................................................................................................................B-9  
Copper Tig Welding..............................................................................................................B-9  
Tips For AC TIG Welding .....................................................................................................B-9  
GTAW Process.....................................................................................................................B-9  
Protective Gas, Tips For Improved TIG Starting ................................................................B-10  
AC Tig Welding Quick Start Up..........................................................................................B-11  
DC Tig Welding Quick Start Up..........................................................................................B-12  
________________________________________________________________________________  
Accessories.....................................................................................................Section C  
Optional Accessories and Compatible Equipment ................................................C-1  
Factory, Field Installed ..........................................................................................C-1  
________________________________________________________________________  
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-4  
________________________________________________________________________  
Wiring Diagram................................................................................................Section F  
________________________________________________________________________  
Parts Lists...............................................................................................................P-560  
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A-1  
A-1  
INSTALLATION  
TECHNICAL SPECIFICATIONS  
-
V205-T DC TIG K2629-1 (Code Number 11426)  
V205-T AC/DC TIG K1855-4 (Code Number 11430)  
INPUT - SINGLE PHASE ONLY  
Max. Input Current  
Input Voltages * / 50 /60 Hz.  
34A at Rated Output  
30A at Rated Output  
115  
230  
RATED OUTPUT  
Input Amps  
Output Amps Volts at Rated Amperes  
Duty Cycle  
(Stick) 110  
24.4V  
23.6V  
22.8V  
34A  
28A  
20A  
(115V) 35%  
60%  
90  
70  
100%  
(TIG) 150  
120  
16V  
34A  
25A  
20A  
(115V) 40%  
60%  
14.8V  
14V  
100  
100%  
(Stick) 180  
150  
27.2V  
26V  
30A  
23A  
19A  
(230V) 35%  
60%  
130  
25.2V  
100%  
(TIG) 200  
170  
18V  
30A  
18A  
15A  
(230V) 40%  
60%  
16V  
140  
15.6V  
100%  
OUTPUT  
Maximum Open  
Circuit Voltage  
54 Volts Max.  
Type of Output  
Output Current  
Range  
DC (K2629-1)  
6-200 Amps  
AC/DC (K1855-4)  
RECOMMENDED INPUT WIRE AND FUSE SIZES FOR MAXIMUM RATED OUTPUT  
TYPE S, SO ST, STO, OR EXTRA  
HARD USAGE INPUT CORD AWG  
TIME-DELAY CIRCUIT BREAKER  
INPUT  
VOLTAGE / FREQUENCY  
(HZ)  
OR FUSE SIZE (AMPS)  
115/50/60  
230/50/60  
#12  
30A  
PHYSICAL DIMENSIONS  
Height  
Width  
Depth  
Weight  
15 in.  
8.5 in.  
19 in.  
Approx. 38 lbs.  
17 kgs.  
381 mm  
216 mm  
483 mm  
TEMPERATURE RANGES  
OPERATING TEMPERATURE RANGE  
STORAGE TEMPERATURE RANGE  
-20°C to +40°C  
-50°C to +85°C  
* Note: Refer to RECONNECT PROCEDURE (Table A.1) for Input  
Voltage Operating Range.  
V205-T DC & V205-T AC/DC TIG  
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A-2  
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.  
The Invertec V205-T DC & V205-T AC/DC have been  
field tested under recommended installation condi-  
tions. It complies with FCC allowable limits for radia-  
tion.  
WARNING  
ELECTRIC SHOCK can kill.  
Only qualified personnel should per-  
form this installation.  
• 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:  
Insulate yourself from the work and ground.  
Always wear dry insulating gloves.  
• Always connect the V205-T to a power supply  
grounded according to the National Electrical  
Code and local codes.  
1. Direct interference radiated from the welder.  
2. Direct interference radiated from the welding leads.  
3. Direct interference radiated from feedback into the  
power lines.  
------------------------------------------------------------  
SELECT SUITABLE LOCATION  
4. Interference from re-radiation of “pickup” by  
ungrounded metallic objects.  
The Invertec will operate in harsh environments. Even  
so, it is important that simple preventative measures  
are followed in order to assure long life and reliable  
operation.  
Keeping these contributing factors in mind, installing  
equipment per the following instructions should mini-  
mize problems.  
• 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.  
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.  
• 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.  
STACKING  
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).  
The Invertec V205-T DC & V205-T AC/DC can not be  
stacked.  
TILTING  
Place the machine directly on a secure, level surface.  
The machine may topple over if this procedure is not  
followed.  
ENVIRONMENTAL AREA  
Keep the machine dry. Do not place it on wet ground  
or in puddles.  
V205-T DC & V205-T AC/DC TIG  
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A-3  
A-3  
INSTALLATION  
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-  
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.  
®
ber content, such as Lincoln Stable-Arc better  
resist high frequency leakage than neoprene and  
other synthetic rubber insulated cables.  
4. Keep the torch in good repair and all connections  
WARNING  
tight to reduce high frequency leakage.  
5. The work terminal must be connected to a ground  
within ten feet of the welder, using one of the fol-  
lowing methods.  
ELECTRIC SHOCK can kill.  
• Have a qualified electrician install  
and service this equipment.  
a) A metal underground water pipe in direct con-  
tact with the earth for ten feet or more.  
• Turn the input power OFF and unplug  
the machine from the receptacle  
before working on this equipment.  
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.  
• 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.  
6. Keep all panels securely in place.  
• Do not remove or defeat the purpose of the  
power cord ground pin.  
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.  
-----------------------------------------------------------------------  
RECONNECT PROCEDURE  
The Invertec V205-T DC & V205-T AC/DC auto recon-  
nect to either 115V or 230V supply.  
This machine is capable of operating within the follow-  
ing input voltage ranges (Table A.1):  
Failure to observe these recommended installation  
procedures can cause radio or TV interference prob-  
lems.  
TABLE A.1  
NOMINAL  
115V  
RANGE  
90-140V  
184-276V  
208V / 230V  
Fuse the input circuit with time delay fuses or delay  
type¹ 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.  
The Invertec Power Source 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.  
V205-T DC & V205-T AC/DC TIG  
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A-4  
230V INPUT  
A-4  
INSTALLATION  
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.  
The equipment is provided with a 230/115V cable,  
6.6ft.(2m) in length with a 230V 6-50P attachment  
plug.  
Attachment plugs must comply with the Standard for  
Attachment Plugs and Receptacles, UL498.  
The Invertec V205-T performs best when connected  
to 230VAC inputs. This input allows full output of the  
machine (200 amps).  
The product is considered acceptable for use only when  
an attachment plug as specified is properly attached to  
the supply cord.  
115V INPUT  
For use on engine drives, keep in mind the above  
input draw restrictions and the following precaution.  
A suitable 115V attachment plug must be installed on the  
power cord to use the V205-T with a 115V input supply.  
The rated output of the V205-T is available when con-  
nected to a 30A branch circuit. When connected to a  
branch circuit with lower amp rating, lower welding cur-  
rent and duty cycle must be used. An output guide is pro-  
vided below. The values are approximate and must be  
adjusted downward if the fuse or circuit breaker trips off.  
Other loads on the circuit and fuse/circuit breaker char-  
acteristics will affect the available output. Do not exceed  
these welding conditions:  
ENGINE DRIVEN GENERATOR  
The Invertec V205-T DC & V205-T AC/DC can be  
operated on engine driven generators as long as the  
230 volt auxiliary meets the following conditions:  
• The AC waveform peak voltage is below 400 volts.  
• The AC waveform frequency is between 45 and  
65Hz.  
The following Lincoln engine drives meet these condi-  
tions when run in the high idle mode:  
15A branch circuit  
10% duty cycle  
Stick: 75A  
• Ranger 250, 250 LPG, 305 G, 305 D*  
• Vantage 300, 400, 500 & Air Vantage 500*  
Some engine drives do not meet these conditions  
(e.g. Miller Bobcats, etc). Operation of the Invertec  
V205-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 power source.  
TIG:  
105A  
20A branch circuit  
10% duty cycle  
Stick: 90A  
TIG:  
130A  
* Ranger and Vantage Engine Drives require the full  
ATTACHMENT PLUG INSTALLATION  
KVA Adapter Kit (K1816-1)  
Connect the white (neutral) wire under terminal clamp  
with silver screw, and black (hot) wire under terminal  
clamp with brass screw. Connect green wire under  
terminal clamp with green screw.  
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.  
---------------------------------------------------------------------------  
V205-T DC & V205-T AC/DC TIG  
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A-5  
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.  
• Keep the electrode holder, TIG  
torch and cable insulation in good  
condition and in place.  
• Do not touch electrically live parts  
or electrode with skin or wet cloth-  
ing.  
STRAIN RELIEF BOOT  
TIG ADAPTER  
• Insulate yourself from work and ground.  
• Turn the input line Switch on the Invertec V205-T  
DC & V205-T AC/DC “off” before connecting or  
disconnecting output cables or other equipment.  
RETAINING COMPOUND  
TIG TORCH POWER CABLE WITH GAS FITING  
-----------------------------------------------------------  
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 PowerSwitchOFF”. 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  
FIGURE A.2  
WORK CABLE  
To avoid receiving a high frequency shock, keep  
the TIG torch and cable Insulation in good condi-  
tion.  
___________________________________________  
WORK CABLE CONNECTION  
WORK CABLE  
-
+
Next, connect the work cable to the “+” output terminal  
in the same way.  
STICK ELECTRODE  
HOLDER  
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  
work piece.  
FIGURE A.1  
TIG TORCH  
-
+
WORK CLAMP  
WORK CABLE  
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A-6  
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.  
V205-T DC & V205-T AC/DC TIG  
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B-1  
B-1  
OPERATION  
GENERAL DESCRIPTION  
Read and understand this entire section before  
operating your machine.  
The Invertec V205-T DC & V205-T AC/DC are indus-  
trial 200 amp arc welding power sources that utilize  
single phase input power, to produce constant current  
output. The welding response has been optimized for  
stick (SMAW) and TIG (GTAW). The units are ideal  
for industrial applications where portability is impor-  
tant.  
SAFETY INSTRUCTIONS  
WARNING  
The Invertec V205-T AC/DC is a power source that  
can perform the following types of welding with  
excellent results:  
ELECTRIC SHOCK can kill.  
• Do not touch electrically live parts  
such as output terminals, electrode  
or internal wiring.  
• TIG AC with square, sinusoidal and triangular  
waveforms.  
• Insulate yourself from the work and  
ground.  
• TIG DC (with high frequency or Touch Start TIG  
Starting)  
• Stick DC  
• Always wear dry insulating gloves.  
____________________________________  
The Invertec V205-T DC is a power source that can  
perform the following types of welding with excellent  
results:  
FUMES AND GASES  
can be dangerous.  
• TIG DC (with high frequency or Touch Start TIG  
• Keep your head out of fumes.  
Starting)  
• Stick DC  
• Use ventilation or exhaust to  
remove fumes from breathing  
zone.  
The following items can be connected to the 6 pin  
socket on the front panel:  
• Remote control potentiometer for Stick welding.  
____________________________________  
Remote Foot Amptrol or Hand Amptrol  
WELDING, CUTTING and  
GOUGING SPARKS  
• Arc Start Switch  
NOTE: See Accessories section of this manual for  
product numbers and complete description.  
can cause fire or explosion  
• Keep flammable material away.  
WELDING CAPABILITY  
• Do not weld, cut or gouge on  
containers that have held com-  
bustibles.  
The Invertec V205-T DC & V205-T AC/DC is rated at  
200 amps, 18 volts, at 40% duty cycle on a ten minute  
basis. It is capable of higher duty cycles at lower out-  
put currents. It is capable of 140 amps, 15.6 volts at at  
100% duty cycle. If the duty cycle is exceeded, a  
thermal protector will shut off the output until the  
machine cools. See Technical Specifications in A-1 for  
other rated outputs.  
____________________________________  
ARC RAYS  
can burn.  
• Wear eye, ear and body  
protection.  
The Invertec V205-T is recommended for stick weld-  
ing with such popular electrodes as Fleetweld 5P and  
5P+ (E6010), Fleetweld 35 (E6011), Fleetweld 37  
(E6013), Fleetweld 180 (E6011) and Excalibur 7018.  
____________________________________  
Only qualified personnel should operate this  
equipment. Observe all safety information  
throughout this manual.  
LIMITATIONS  
The V205-T is not recommended for pipe thawing.  
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B-2  
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 there-  
fore 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  
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B-3  
B-3  
OPERATION  
CONTROLS AND SETTINGS  
All operator controls and adjustments are located on  
the case front of the V205-T machine. Refer to Figure  
B.2 and the corresponding explanations.  
FIGURE B.2  
9
8
7
6
1. Input Voltage warning Light Green LED  
2. Thermal / Device Warning Light Yellow LED  
3. Pulse On/Off Button  
LOCAL  
4. Setup/Parameter Select Button  
5. Output/Parameter Adjust Knob  
6. Digital Display  
5
sec  
7. Local/Remote Button  
13  
sec  
8.Trigger Selection Button  
9. Welding Process (MODE) Button  
10. Electrode Connection (Negative)  
11. Remote Control Connector  
12. Electrode Connection (Positive)  
13. Welding Parameter Drawing  
14. VRD (Voltage Reduction Device) Status Light  
1
2
4
VDR OFF  
VDR ON  
14  
3
10  
11  
12  
Access Welding Parameter. Repeatedly pressing the  
Parameter button will step through the Welding  
Parameter waveform lights on the front panel.  
Parameters which can be changed.  
Start Current  
1. Input Voltage warning light green LED -  
Indicates that the machine is on and input voltage is  
within acceptable range.  
2. Thermal Shutdown Light (yellow LED) - Indicates  
thermal over load or output disabled for incorrect  
supply voltage.  
Upslope  
Weld Current (Peak Current)  
Pulse Frequency  
• With the "Yellow LED" on, and an alarm code  
blinking on "Digital Display Item 6" (see  
Troubleshooting Section E, "Possible electrical  
problems"), the machine will not supply power at  
the output.  
% on Time  
Background Current  
Downslope  
Finish Current  
Postflow sec.  
• If over-heating occurs, the "Yellow LED" will stay  
on until the machine has sufficiently cooled. Leave  
the power source on to allow the fan to cool the  
unit.  
There is a LED for each welding parameter. When lit,  
it has confirmed the mode or selection chosen.  
Access the "AC Frequency" and "AC Balance" by  
pressing and holding the Parameter button for three  
(3) seconds. (AC/DC model only)  
Access the "Set Up Menu". See Set Up Menu section.  
3. Pulse On/OFF push button - CONSTANT current  
- PULSED current  
5. Output / Parameter Adjust Knob- Allows you to con-  
tinuously adjust the current both in TIG and in Stick  
welding. Allows you to change the value, shown on  
"Digital Display Item 6", of the parameter selected with  
"Setup/Parameter select button Item 4".  
4. Setup/Parameter Select push button  
-
“Setup/Parameter" push button has three (3) differ-  
ent functions:  
V205-T DC & V205-T AC/DC TIG  
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B-4  
B-4  
OPERATION  
2 STEP DIAGRAM 1  
6. Digital Display - displays currently set values for  
(2)  
(1)  
each mode or welding parameter.  
7. Local/Remote push button - Selects the welding  
current adjusting system:  
• from front panel  
• from remote control  
The LED beside the symbol confirms the selection.  
8. Tig Trigger Sequences - For the V205-T AC/DC,  
TIG welding can be done in either the 2-step or 4-  
step mode which is selected with the Trigger Mode  
Push Button.  
2 STEP DIAGRAM 2  
2-Step Sequence  
With the Trigger Mode switch in the 2-step position,  
the following welding sequence will occur. This  
sequence is shown in (2-step diagram 1)  
(1)  
(2)  
(2)  
1. Press and hold the Arc Start Switch to start the  
sequence.  
The machine will open the gas valve to start the flow  
of the shielding gas. After a 0.5 second preflow time,  
to purge air from the torch hose, the output of the  
machine is turned ON. At this time the arc is started.  
1. Press and hold the Arc Start Switch to start the  
sequence.  
The machine will open the gas valve to start the flow  
of the shielding gas. After a 0.5 second preflow time,  
to purge air from the torch hose, the output of the  
machine is turned ON. At this time the arc is started.  
After the arc is started the output current will be  
increased from the start current to the welding cur-  
rent. Both the start current and increase, or upslope  
time are presettable. The default start current is 15  
amps and the default upslope time is 0.2 seconds.  
After the arc is started the output current will be at  
the Start current. This condition can be maintained  
as long or as short as necessary.  
2. Release the Arc Start Switch to stop welding.  
The machine will now decrease the output current at  
a controlled rate, or downslope time, until the Finish  
current, (also commonly referred to as Crater  
Current) is reached and the output of the machine is  
turned OFF. Both the Downslope Time and the  
Finish Current are can be preset.  
If the Start current is not necessary, do not hold the  
TIG torch trigger as described at the beginning of  
this step. Instead, quickly press and release the trig-  
ger. In this condition, the machine will automatically  
pass from Step 1 to Step 2 when the arc is started.  
2. Release the TIG torch trigger to start the main part  
of the weld.  
After the arc is turned OFF, the gas valve will  
remain open to continue the flow of the shielding  
gas to the hot electrode and work piece. The dura-  
tion of this postflow shielding gas is adjusted by the  
Postflow Parameter.  
The output current will be increased from the start  
current to the welding current. Both the start current  
and increase, or upslope time are presettable. The  
default start current is 15 amps and the default ups-  
lope time is 0.2 seconds.  
Possible variations of this standard sequence is  
shown in (2 step diagram 2). It is possible to press  
and hold the TIG torch trigger a second time during  
downslope to restart. After the trigger is pressed the  
output current will increase to the welding current.  
This operation is shown in (2 step diagram 2).  
3. Press and hold the TIG torch trigger when the main  
part of the weld is complete.  
The machine will now decrease the output current  
at a controlled rate, or downslope time, until the  
Finish current is reached. Both the Downslope Time  
and the Finish Current are presettable. This Finish  
current can be maintained as long or as short as  
necessary.  
4-Step Sequence  
With the 4-step Selected, the following welding  
sequence will occur.  
V205-T DC & V205-T AC/DC TIG  
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B-5  
B-5  
OPERATION  
10. Electrode Connection (Negative) - For quick disconnect  
4. Release the TIG torch trigger.  
TM  
system using Twist-Mate cable plugs with gas pass  
The output current of the machine will turn OFF and  
the gas valve will remain open to continue the flow  
of the shielding gas. The duration of this postflow  
time is adjusted by the Postflow parameter. This  
operation is shown in (4 step diagram 1).  
through for TIG Torches.  
11. Remote Control Connector - For the connection of a  
Lincoln Foot Amptrol, Hand Amptrol or Arc Start Switch.  
See the ACCESSORIES section for available options.  
Possible variations of this standard sequence are  
shown in (4 step diagram 2). By releasing and re-  
pressing the TIG torch trigger during the downslope  
step, the output will immediately drop to and hold at  
the Finish Current. Releasing the trigger will turn off  
the output and begin postflow. This operation shown  
in (4 step diagram 2).  
12. Electrode Connection (Positive) - For quick disconnect  
TM  
system using Twist-Mate cable plugs  
13. Welding Parameter Display - LEDʼs show which mode or  
welding parameter is activated for adjustment.  
• If it is necessary to modify the welding parameters "Item  
13":  
4 STEP DIAGRAM 1  
- Wait four seconds after the LEDʼs on the panel have  
gone out, the welding current LED will be lit.  
- Press the SETUP/Parameter push button "Item 4";  
every time the push button is pressed, one of the  
LEDʼs in the diagram “Item 13” comes on (in clock-  
wise sequence) and the value of the parameter  
appears on the Digital display "Item 6". Stop at the  
desired parameter.  
(3)  
(2)  
(4)  
(1)  
- Rotate the Output/Parameter Adjust Knob"Item 5"  
and modify the parameter value.  
4 STEP DIAGRAM 2  
- Press the SETUP/Parameter "Item 4" push button  
again to pass to another parameter, or wait five sec-  
onds and the Weld Current LED will come on again.  
14. VRD (Voltage Reduction Device) Status Lights- Voltage  
reduction device can be enabled from the set-up menu and  
an output voltage limit can be set that reduces the output  
open circuit voltage when not welding to that limit. If enabled  
when the machine is sitting idle 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 welding the red VRD off light will  
illuminate.  
9. Welding selection button - Permits selection of the welding  
mode. The LED beside the symbol confirm the selection:  
• Stick Crisp-used for E6010 and other cellulosic electrodes  
• Stick Soft-used for low Hydrogen and E7018 electrodes  
• TIG DC  
Note: The green VRD on light will illuminate in TIG mode until  
• TIG AC (AC/DC model only)  
the output is triggered even when VRD is disabled.  
WELDING PARAMETER DEFAULTS AND RANGES  
PARAMETER  
START CURRENT  
UPSLOPE  
VALUE  
AMPS  
MIN  
6
MAX  
MAX  
10  
DEFAULT  
6
SEC.  
0
0.2  
100  
1.0  
8
WELD CURRENT*  
DOWNSLOPE  
AMPS  
6
MAX  
10  
SEC.  
0
FINISH CURRENT  
POSTFLOW  
AMPS  
6
MAX  
60  
SEC.  
0.2  
0.1  
5
5.0  
0.5  
50  
PULSE FREQUENCY  
% ON TIME  
HZ  
500  
95  
%
BACKGROUND CURRENT  
AC FREQUENCY (AC/DC model only)  
AC BALANCE  
% OF WELD CURRENT  
HZ  
1
100  
150  
85  
20  
20  
35  
100  
75  
(EN = E%lectrEodNe Negative)  
(AC/DC model only)  
MODE  
DC TIG  
2 STEP  
LOCAL  
TRIGGER  
LOCAL / REMOTE  
*Maximum Weld Current can be limited by input voltage, Welding Mode, AC TIG waveform and AC TIG frequency.  
V205-T DC & V205-T AC/DC TIG  
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B-6  
B-6  
OPERATION  
- Rotate the Output / Parameter Adjust Knob, the  
Digital Display shows the numbers corresponding to  
the parameters in sequence; stop at the desired  
parameter and push the "Setup/Parameter Push  
Button".  
SET UP MENU  
Many additional parameters can be modified via the  
Set Up Menu. To access the Set Up Menu:  
- The number on the Digital display "Item 6" is  
replaced by the value of the parameter that can be  
modified through the Output / Parameter adjust knob  
"Item 5".  
• Position the ON/OFF switch to OFF “0”.  
• Depress and hold the Parameter select Push Button.  
• Position the On/Off switch to on "I" at the back of the  
machine; the input voltage light "Item 1" (green LED)  
confirms normal operation.  
- With parameter (9) all the modifications made in the  
SETUP mode are cancelled and the standard values  
set by Invertec V205-T DC & V205-T AC/DC are  
restored.  
• The SETUP mode is confirmed by a center "0" on  
the Digital display “Item 6”.  
- To exit the Set Up Menu, return to “0” and press the  
Setup/Parameter Push Button  
INDICATOR  
PARAMETER  
Exit From Set Up  
DEFAULT  
0
2
3
4
5
6
Pre Flow Time (0 - 25 seconds)  
Arc Force Soft Mode, Percent above Peak Current for Stick only (0-100%)  
Hot Start Soft Mode, Percent above Peak Current for Stick only (0-100%)  
Arc Force Crisp Mode, Pecent above Peak Current for Stick only (0-500%)  
Hot Start Crisp Mode, Percent above Peak Current for Stick only (0-500%)  
Setting the AC Wave Form (AC/DC model only)  
0=Sinusoidal  
0.5 sec.  
30%  
80%  
350%  
150%  
2 (Square)  
Off  
7
1=Triangular  
2=Square  
VRD  
Off=Disabled  
1=Enable (limits OCV to 12V)  
8
9
2=Enable (limits OCV to 20V)  
3=Enable (limits OCV to 30V)  
Max Current Value with Remote Control  
(6 Amps - Peak Current)  
Peak Current  
HF  
NOTE: Peak Current (Max Weld Current) can be limited by input voltage, welding mode, AC TIG waveform and AC TIG frequency.  
Lift or HF Start in DC, Ignored in AC (0 = HF Start, 1 Touch Start)  
Reset of all Parameters  
10  
11  
12  
13  
DC TIG STRIKE CURRENT 6-200  
40 Amps  
0
DC TIG Start Polarity 0=DC- or 1=DC+  
2 Step Trigger Selection  
14  
0 = Restart Disabled  
1
1 = Restart Enabled  
4 Step Trigger Selection  
15  
0 = Restart Disabled  
0
1 = Restart Enabled  
AC TIG Start Power (for AC TIG only on AC/DC model)  
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  
16  
17  
2
1
1.2 to 5.0 = max. Incrementing limit (See Note)  
Note: The machine will try to start the machine 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.  
TIG PULSED BASE CURRENT Setting:  
0 = Absolute value setting  
1 = Percentage value setting  
V205-T DC & V205-T AC/DC TIG  
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B-7  
B-7  
OPERATION  
OUTPUT LIMITATIONS  
FIGURE B.3  
The maximum output current as specified in the instal-  
lation section of this manual is derated in several situ-  
ations; alternate AC Wave Forms, elevated AC  
Frequencies and 115V input.  
• Alternate AC Wave Forms (See Set Up Menu)¹  
Square  
200 amps max. output  
Sinusoidal 150 amps max. output  
Triangular 120 amps max output  
1) Workpiece  
2) Filler material  
3) Non-consumable electrode 7  
5) Flowmeter  
6) Pressure reducer  
nert gas (typically argon)  
• Elevated AC Frequencies¹  
) l  
Above 85Hz (AC output) the square wave out-  
put is limited to 170 amps. Elevated AC  
Frequencies do not effect the output of  
Sinusoidal and Triangular Waveforms.  
4) Torch  
8)  
Power source  
WELDING POLARITY  
• 115V Operation  
DC Electrode Negative Polarity (Direct Current  
Straight Polarity)  
150 A TIG Mode  
110 A Stick Soft mode  
100 A Stick Crisp Mode  
(see FIGURE B.4)  
While Welding, there is a continuous flow of electrons  
from the electrode to the workpiece.  
These derated values have been programmed into the  
Invertec V205-T to ensure reliable operation.  
This is the most used polarity, ensuring limited wear of  
the electrode, since the majority of the heat concen-  
trates on the anode (workpiece). Narrow and deep  
welds are obtained with high travel speeds.  
¹ AC/DC model only  
DC TIG WELDING  
Most materials, with the exception of aluminum and  
magnesium, are welded with this polarity.  
(see FIGURE B.3)  
The TIG (Tungsten lnert Gas) welding process is  
based on the presence of an electric arc between a  
non-consumable electrode (pure or alloyed tungsten  
with an approximate melting temperature of 3370°C)  
and the workpiece. An inert gas (typically argon)  
atmosphere protects the weld pool.  
FIGURE B.4  
To avoid inclusions of tungsten in the joint, the elec-  
trode should not contact the workpiece. For this rea-  
son the arc is started through a Hi. Freq. generator.  
For situations requiring no Hi. Freq., Touch Start Tig  
reduces the short-circuit current to keep tungsten  
inclusions to the minimum.  
To improve weld bead quality at the end of the weld it  
is important to carefully control the downslope of cur-  
rent and ensure proper gas coverage over the weld.  
V205-T DC & V205-T AC/DC TIG  
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B-8  
B-8  
OPERATION  
DC Electrode Positive Polarity. (Direct Current  
A.C. (Alternating Current) (AC/DC model only)  
Reverse Polarity) (see Figure B.5)  
(see Figure B.7)  
In this case, there is a continuous flow of electrons  
from the workpiece to the electrode. The reverse  
polarity is used for welding alloys covered with a layer  
of refractory oxide.  
Alternating Current welding is typically used for Tig  
welding aluminum (and its alloys) or magnesium. The  
polarity alternates between Electrode Positive and  
Electrode Negative (EN). During the positive half-  
wave the oxide is broken. During the negative half-  
wave, the electrode cools, the workpiece melts and  
penetration occurs.  
With this polarity the electrode functions as anode and  
is subjected to a high degree of heat; the workpiece is  
bombarded by positive ions sent from the electrode  
which break the surface oxide.  
FIGURE B.7  
In Electrode Positive Polarity, high currents cannot be  
used, since they would cause an excessive wear of  
the electrode.  
NOTE: (The Invertec V205-T DC & V205-T AC/DC  
cannot be used for Electrode Positive TIG welding  
without special adapters.)  
Greater % EN = MORE PENETRATION  
Lesser % EN = more CLEANING  
50% (EN)  
FIGURE B.5  
Changing the wave balance alters the ratio between  
the cleaning and the penetrating current.  
A.C.-Pulsed TIG  
When AC welding, a pulsed current can be used, with  
similar effects to those described in pulsed direct  
current welding.  
FIGURE B.8  
D.C.-Pulsed TIG  
A.C.- PULSED TIG  
(see Figure B-6)  
The use of pulsed direct current allows better control  
of the weld pool during certain operating conditions.  
When compared with traditional TIG welding per-  
formed at the same average current, pulsed welding  
results in a smaller heat affected zone which results in  
fewer deformations and reduced chance of cracking  
and gas entrapment.  
Increasing the frequency constricts the arc, increases  
stability and improves weld quality.  
FIGURE B.6  
DC TIG- NOT PULSED  
DC-PULSED TIG  
V205-T DC & V205-T AC/DC TIG  
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B-9  
B-9  
OPERATION  
1. The AC wave balance can be set to a higher per-  
centage electrode negative which minimizes tung-  
sten heating and erosion.  
STEEL TIG WELDING  
The TIG process is very effective for welding both car-  
bon steel and alloy steel, especially in applications  
requiring precision results. DC Electrode Negative  
Polarity is required. Since this process does not  
include the removal of impurities, proper cleaning and  
preparation of the edges is required.  
2. The AC frequency can be varied to "focus" the arc.  
Increasing the AC frequency above 60Hz will nar-  
row the cone shape arc from the tungstenʼs tip.  
Decreasing the AC frequency below 60Hz will  
broaden the cone shape arc from the tungstenʼs tip.  
FILLER MATERIAL:  
The two above benefits can be used to maintain a  
tight focus of the arc for precise heat control and tight  
joint access. Because of the AC inverters abilities in  
these areas the following recommendations are made  
as a starting point:  
The filler rods must deposit welds with mechanical  
characteristics appropriate for the application.  
COPPER TIG WELDING  
Since TIG welding is a process characterized by high  
heat concentration, it is particularly suitable for weld-  
ing materials with high thermal conductivity, like cop-  
per. As with steel, the DC Electrode Negative Polarity  
is employed, with argon as protective gas.  
• A 2% Thoriated tungsten is recommended instead  
of the Pure tungsten that is normally recommended  
for AC welding. Thoriated tungstens emit electrons  
easier and therefore will improve starting.  
Considering the fluidity of molten copper, the use of  
backup support may prove useful.  
• Sharpen the tungsten to a point. Normally it is rec-  
ommended to pre-ball a pure tungsten when AC  
welding with a conventional power source.  
However, the AC inverter with itʼs extended AC bal-  
ance control minimized tungsten heating thus allow-  
ing for a pointed tungsten to be used.  
FILLER MATERIAL:  
In order to avoid the oxidation of the molten material,  
filler materials containing phosphorus, silicon or other  
deoxidating materials are typically used. The mechan-  
ical properties can also be improved through the use  
of silver.  
• Set the AC Balance control to maximum 85% elec-  
trode negative. This can be reduced if the material  
welded is heavily oxidized, however starting at max-  
imum and adjusting to less is desired.  
TIPS FOR AC TIG WELDING  
(AC/DC model only)  
AC Inverter TIG power sources offer two significant  
advantages over conventional Silicon Controlled  
Rectifier (SCR) / transformer power sources:  
• Set the AC Frequency in the 100 to 120 Hz range.  
This is a "Sweet Spot" for most aluminum applica-  
tions.  
GTAW Process  
Electrode Polarity  
DC-  
AC  
Approximate Argon  
Gas Flow Rate  
C.F.H. (l/min.)  
Electrode Tip Preparation  
Sharpened  
Sharpened  
Electrode Type  
EWTh-2, EWLa-1  
EWTh-2, EWLa-1  
Stainless  
Steel  
Electrode Size-in. (mm)  
Aluminum  
.010  
.020  
.040  
1/16  
3/32  
1/8  
(0.25)  
(0.50)  
(1.0)  
(1.6)  
(2.4)  
(3.2)  
Up to 15 A.  
Up to 15 A.  
Up to 80 A.  
Up to 150 A.  
Up to MAX. A.  
X
Up to 15 A.  
Up to 20 A.  
Up to 60 A.  
Up to 130 A.  
Up to MAX. A.  
X
3-8  
(2-4) 3-8  
(2-4)  
5-10  
5-10  
5-10  
(3-5) 5-10 (3-5)  
(3-5) 5-10 (3-5)  
(3-5) 9-13 (4-6)  
13-17 (6-8) 11-15 (5-7)  
15-23 (7-11) 11-15 (5-7)  
Tungsten electrodes are classified as follows by the American Welding Society (AWS):  
+2% Thoria .......................EWTh-2...red  
+1.5% Lanthana ...............EWLa-1...black  
V205-T DC & V205-T AC/DC TIG  
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B-10  
B-10  
OPERATION  
PROTECTIVE GAS  
3. AC TIG Start Power:  
Both argon and helium work when welding aluminum.  
Argon is preferred, due to its lower cost and consump-  
tion rate. This gas also tends to stabilize the arc, thus  
making it easy to operate. For some applications,  
however, the use of helium, or argon-helium blends, is  
recommended due to better weld penetration and  
faster travel speed. Helium is especially suitable for  
welding thick workpieces. The recommended gas flow  
rates are shown in table 5.  
For AC TIG welding AC start power can be adjusted  
from the set-up menu to aid starting if required. The  
V205-T AC/DC when set to AC TIG will try to initiate  
the arc with positive polarity until the arc is estab-  
lished. 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:  
TABLE 5  
Current (A)  
50  
Helium cfh-(l/min)  
29 - (14)  
Range  
0.5 to 1  
Mode  
29 - (14)  
42 - (20)  
Manual Setting  
Incremental setting  
100  
150  
1.2 to 5.0  
200  
250  
300  
42 - (20)  
53 - (25)  
53 - (25)  
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% more  
(0.1) up to the start power limit setting or until the arc  
establishes. 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.  
TIPS FOR IMPROVED TIG STARTING  
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  
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 40 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.  
V205-T DC & V205-T AC/DC TIG  
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B-11  
B-11  
OPERATION  
To change the AC Balance, press and hold the  
Parameter button for 3 seconds, AC Frequency is  
selected, press the Parameter button again and AC  
Balance is selected. Adjust the Output Control for the  
desired AC Balance. After about 5 seconds, the power  
source will switch back to the welding mode ready to  
weld with the new selected AC Balance.  
AC TIG WELDING QUICK START UP  
(AC/DC model only)  
WARNING  
ELECTRIC SHOCK can kill.  
• Have an electrician install and  
service this equipment.  
To change the Post Flow time, repeatedly push the  
Parameter button until the Post Flow indicator light is  
on. Adjust the Output control to the desired Post Flow  
time as indicated on digital display.  
• Turn the input power off at the fuse box, dis-  
connect or unplug supply lines and allow  
machine to sit for five minutes minimum to  
allow the power capacitors to discharge before  
working inside this equipment.  
• Do not touch electrically hot parts.  
------------------------------------------------------------------------  
Connect the shielding gas – typically argon – using a  
appropriate regulator. Connect the foot amptrol, torch  
and work lead to the power source.  
With the work cable connected to a properly grounded  
work piece, turn the power source on.  
The Invertec V205 T AC/DC TIG is ready to AC TIG  
weld with the following features:  
• AC TIG  
• Trigger Mode in 2 step mode  
• Local control  
• Pulser off  
• AC Square Wave  
• AC Balance 65% EN  
• AC Frequency 100HZ  
• Pre Flow .5sec.  
• Post Flow 5 sec.  
• High Freq Start  
Change from Local to Remote control by pushing front  
panel push button.  
Set the maximum output current desired using the  
Output Control. Initiate the arc by closing the arc start  
switch. The Amptrol will control the output current  
from 10 amps to current level set by Output Control.  
To change the AC Frequency, press and hold the  
Parameter button for 3 seconds. The AC Frequency is  
now selected and can be varied by the Output  
Control. The frequency is displayed on the digital  
meter. After about 5 seconds, the power source will  
switch back to the welding mode ready to weld with  
the new selected AC Frequency.  
V205-T DC & V205-T AC/DC TIG  
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B-12  
B-12  
OPERATION  
DC TIG WELDING QUICK START UP  
WARNING  
ELECTRIC SHOCK can kill.  
• Have an electrician install and  
service this equipment.  
• Turn the input power off at the fuse box, dis-  
connect or unplug supply lines and allow  
machine to sit for five minutes minimum to  
allow the power capacitors to discharge before  
working inside this equipment.  
• Do not touch electrically hot parts.  
------------------------------------------------------------------------  
Connect up the shielding gas – typically argon – using  
an appropriate regulator. Connect foot amptrol, torch  
and work lead to power source.  
With the Work cable connected to a properly ground-  
ed work piece, turn the power source on.  
To change to DC TIG Welding:  
• Press Mode button to select "DC TIG."  
• Press Trigger Mode button and set to 2-step.  
• Press Local / Remote Mode button and set for  
Remote.  
• Pulsing parameters selected by Parameter button,  
and changed using Output Control.  
Set the maximum output current desired using the  
Output Control.  
Initiate the arc by closing the Foot Amptrolʼs arc start  
switch. The Amptrol will control the output current  
from 10 amps to current level set by output control.  
To change the Post Flow time, repeatedly push the  
Parameter button until the Post Flow indicator light is  
on. Adjust the Output control to the desired Post Flow  
time as indicated on digital display.  
To change from High Frequency to Lift Start (Refer  
to Set-Up menu in Operation Section of this manual),  
turn power source off. Press and hold the Parameter  
button while the power source is turned on. A “0” in  
the center of the digital display indicates the Set Up  
Menu is now active. Rotate the Output Control until #  
10 is displayed. Press the Parameter button again and  
rotate the Output Control until “1” is displayed. Press  
the Parameter button to accept this setting. Rotate the  
Output Control until “0” is displayed. Press the para-  
meter button to exit the Set Up Menu.  
V205-T DC & V205-T AC/DC TIG  
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C-1  
C-1  
ACCESSORIES  
TIG TORCH 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.  
Factory Installed  
Twist-Mate Cable Connectors  
1 – standard for Ground Clamp  
1 – Gas Pass through for Tig Torch  
Strap Packet  
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.  
Instruction Manual  
Field Installed  
K857 - Remote Output Control - For Stick welding.  
When the V205-Tʼs Output Control is in the  
"REMOTE" position, this portable current control pro-  
vides the same range as the current control on the  
welder. Consists of a 6-pin Amphenol connector which  
plugs into the remote control Amphenol. 25 foot cable  
length.  
K2413-1- TIG-Mate 9 Air Cooled TIG Torch Starter  
Pack. One complete easy-to-order Kit packaged in its  
own portable carring case. Includes: PTA-9 Torch,  
Gas Lens Parts Kit, Harris flowmeter/regulator, 10 Ft.  
gas hose, Twist-Mate™ adapter, work clamp and  
cable.  
tm  
K870 - Foot Amptrol for TIG welding. When the  
CABLE PLUGS  
V205-Tʼs Output Control is in the “REMOTE” position,  
the foot Amptrol energizes the output and controls the  
output remotely. The Foot Amptrol connects directly  
to the 6 pin Amphenol.  
K852-70 - Cable Plug Kit for 1/0-2/0 cable. Attaches  
to welding cable to provide quick disconnect from  
machine.  
tm  
K963-3 - Hand Amptrol for TIG welding. When the  
V205-Tʼs Output Control is in the “Remote” position,  
the hand Amptrol energizes the output and controls  
the output remotely. The Hand Amptrol connects  
directly to the 6 pin Amphenol.  
Twist-Mate Torch Adapter K1622-1 - One is shipped  
with the welder torch. If you do not care to interchange  
this part between torches (one is required to connect  
Magnum PTA-9 or PTA-17 TIG torches with one-piece  
cable to the V205-T) you may order an additional  
adapters. The quick connect plug provides connection  
for both gas and welding current.  
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 cur-  
rent set by the Current Control on the control panel.  
When using the Arc Start Switch set the Output  
Control to the “LOCAL” position.  
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  
PTA-9 and PTA-17 TIG torches. These kits include  
back cap, collets, collet bodies, nozzles and tung-  
stens.  
Magnum® PTA-9 and PTA-17 TIG Torches - The  
following standard Magnum® TIG torches with one-  
piece cable may be used with the Invertec V205-T.  
Order KP507 for PTA-9 torches  
Order KP508 for PTA-17 torches  
Order KP2414-1 Gas Lens Parts kit for PTA-9 torches  
• K1781-1  
• K1781-3  
• K1782-1  
• K1782-3  
PTA-9  
PTA-9  
12.5 ft  
25 ft  
medium back cap  
medium back cap  
long back cap  
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.  
PTA-17 12.5 ft  
PTA-17 25 ft  
long back cap  
NOTE: Each torch requires a Twist-Mate™ adapter,  
(one is included with the machine). Collets, collet bod-  
ies, and nozzles are not included and must be ordered  
separately.  
V205-T DC & V205-T AC/DC TIG  
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D-1  
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.  
V205-T DC & V205-T AC/DC TIG  
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E-1  
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  
V205-T DC & V205-T AC/DC TIG  
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E-2  
E-2  
TROUBLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PROBLEMS  
POSSIBLE  
RECOMMENDED  
(SYMPTOMS)  
CAUSE  
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  
V205-T DC & V205-T AC/DC TIG  
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E-3  
E-3  
TROUBLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PROBLEMS  
POSSIBLE  
RECOMMENDED  
(SYMPTOMS)  
CAUSE  
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  
V205-T DC & V205-T AC/DC TIG  
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E-4  
E-4  
TROUBLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PROBLEMS  
POSSIBLE  
RECOMMENDED  
(SYMPTOMS)  
CAUSE  
COURSE OF ACTION  
ELECTRICAL FAILURES  
Machine fails to come on  
(Green LED off)  
1. No Input Voltage.  
2. Faulty supply plug or cable.  
3. Internal fuse blown.  
Power output incorrect  
(Green LED on)  
1. Incorrect setting up of the welding  
parameters.  
2. Low mains supply voltage  
No output current  
(Green LED on)  
1. E00 Appears briefly on "DIGITAL  
DISPLAY"  
If all recommended possible areas of  
misadjustment have been checked  
and the problem persists, Contact  
your local Lincoln Authorized  
Field Service Facility.  
• Instantaneous error relating to  
input voltage or output current. If  
the condition persists, the Error  
code will change to E11, E12, or  
E14.  
2. E10 Flashing on the "DIGITAL  
DISPLAY", 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  
3. E11 Flashing on "DIGITAL DIS-  
PLAY"  
• Input supply voltage too high.  
4. E12 Flashing on "DIGITAL DIS-  
PLAY"  
• Input supply voltage too low.  
5. E14 Flashing on "DIGITAL DIS-  
PLAY"  
• Welding circuit Inductance too  
high.  
6. E20, E24, or E25 Flashing on  
"DIGITAL DISPLAY"  
• 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  
V205-T DC & V205-T AC/DC TIG  
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F-1  
F-1  
WIRING DIAGRAMS  
V205-T DC & V205-T AC/DC TIG  
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F-2  
F-2  
WIRING DIAGRAM  
V205-T DC & V205-T AC/DC TIG  
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NOTES  
V205-T DC & V205-T AC/DC TIG  
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NOTES  
V205-T DC & V205-T AC/DC TIG  
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Do not touch electrically live parts or  
electrode with skin or wet clothing.  
Insulate yourself from work and  
ground.  
Keep flammable materials away.  
Wear eye, ear and body protection.  
WARNING  
Spanish  
No toque las partes o los electrodos Mantenga el material combustible  
Protéjase los ojos, los oídos y el  
cuerpo.  
bajo carga con la piel o ropa moja-  
da.  
Aislese del trabajo y de la tierra.  
fuera del área de trabajo.  
AVISO DE  
PRECAUCION  
French  
Ne laissez ni la peau ni des vête-  
ments mouillés entrer en contact  
avec des pièces sous tension.  
Gardez à l’écart de tout matériel  
inflammable.  
Protégez vos yeux, vos oreilles et  
votre corps.  
ATTENTION  
Isolez-vous du travail et de la terre.  
German  
Berühren Sie keine stromführenden  
Teile oder Elektroden mit Ihrem  
Körper oder feuchter Kleidung!  
Isolieren Sie sich von den  
Entfernen Sie brennbarres Material! Tragen Sie Augen-, Ohren- und Kör-  
perschutz!  
WARNUNG  
Elektroden und dem Erdboden!  
Portuguese  
Não toque partes elétricas e elec-  
trodos com a pele ou roupa molha-  
da.  
Mantenha inflamáveis bem guarda- Use proteção para a vista, ouvido e  
dos.  
corpo.  
ATENÇÃO  
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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Keep your head out of fumes.  
Use ventilation or exhaust to  
remove fumes from breathing zone.  
Turn power off before servicing.  
Do not operate with panel open or  
guards off.  
WARNING  
Spanish  
Los humos fuera de la zona de res-  
piración.  
Mantenga la cabeza fuera de los  
humos. Utilice ventilación o  
aspiración para gases.  
Desconectar el cable de ali-  
mentación de poder de la máquina  
antes de iniciar cualquier servicio.  
No operar con panel abierto o  
guardas quitadas.  
AVISO DE  
PRECAUCION  
French  
Débranchez le courant avant l’entre- N’opérez pas avec les panneaux  
tien.  
Gardez la tête à l’écart des fumées.  
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  
Strom vor Wartungsarbeiten  
abschalten! (Netzstrom völlig öff-  
nen; Maschine anhalten!)  
Anlage nie ohne Schutzgehäuse  
oder Innenschutzverkleidung in  
Betrieb setzen!  
Vermeiden Sie das Einatmen von  
Schweibrauch!  
Sorgen Sie für gute Be- und  
Entlüftung des Arbeitsplatzes!  
WARNUNG  
Portuguese  
Não opere com as tampas removidas.  
Desligue a corrente antes de fazer  
serviço.  
Mantenha-se afastado das partes  
moventes.  
Não opere com os paineis abertos  
ou guardas removidas.  
Mantenha seu rosto da fumaça.  
Use ventilação e exhaustão para  
remover fumo da zona respiratória.  
ATENÇÃO  
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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