INVERTEC V350-PIPE User manual

INVERTEC V350-PIPE
OPERATOR’S MANUAL
For use with machines Code 10891
IM743
February, 2005
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
importantly, think before you act
and be careful.
™
WARNING
REMOTE POWER
OFF
ON
A
AMPS
A
V
VOLTS
WELD TERMINALS
SELECT
OUTPUT
LINCOLN
ELECTRIC
INVERTEC V350-PIPE
WARNING
WARNING AVISO DE
PRECAUCION
ATTENTION
!!
!!
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•Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: [phone] FAX: [phone] WEB SITE: www.lincolnelectric.com
•World's Leader in Welding and Cutting Products •
R
IEC 60974-1
IP21S
Copyright © 2005 Lincoln Global Inc.
This manual covers equipment which is no
longer in production by The Lincoln Electric Co.
Specications and availability of optional
features may have changed.

FOR ENGINE
powered equipment.
1.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.
____________________________________________________
1.b.Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes
outdoors.
____________________________________________________
1.c. Do not add the fuel near an open flame
welding arc or when the engine is running.
Stop the engine and allow it to cool before
refueling to prevent spilled fuel from vaporiz-
ing on contact with hot engine parts and
igniting. Do not spill fuel when filling tank. If
fuel is spilled, wipe it up and do not start
engine until fumes have been eliminated.
____________________________________________________
1.d. Keep all equipment safety guards, covers and devices in
position and in good repair.Keep hands, hair, clothing and
tools away from V-belts, gears, fans and all other moving
parts when starting, operating or repairing equipment.
____________________________________________________
1.e. In some cases it may be necessary to remove safety
guards to perform required maintenance. Remove
guards only when necessary and replace them when the
maintenance requiring their removal is complete.
Always use the greatest care when working near moving
parts.
___________________________________________________
1.f. Do not put your hands near the engine fan.
Do not attempt to override the governor or
idler by pushing on the throttle control rods
while the engine is running.
___________________________________________________
1.g. To prevent accidentally starting gasoline engines while
turning the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.
i
SAFETY
i
ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.
Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1”from the American Welding Society, P.O. Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety”booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
WARNING
Mar ‘95
ELECTRIC AND
MAGNETIC FIELDS
may be dangerous
2.a. Electric current flowing through any conductor causes
localized Electric and Magnetic Fields (EMF). Welding
current creates EMF fields around welding cables and
welding machines
2.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.
2.c. Exposure to EMF fields in welding may have other health
effects which are now not known.
2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:
2.d.1.
Route the electrode and work cables together - Secure
them with tape when possible.
2.d.2. Never coil the electrode lead around your body.
2.d.3. Do not place your body between the electrode and
work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.
2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
2.d.5. Do not work next to welding power source.
1.h. To avoid scalding, do not remove the
radiator pressure cap when the engine is
hot.
CALIFORNIA PROPOSITION 65 WARNINGS
Diesel engine exhaust and some of its constituents
are known to the State of California to cause can-
cer, birth defects, and other reproductive harm.
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
The Above For Diesel Engines The Above For Gasoline Engines

ii
SAFETY
ii
ARC RAYS can burn.
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.
4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.
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.
ELECTRIC SHOCK can
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.
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.
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:
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
• AC Welder with Reduced Voltage Control.
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.
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.
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.
FUMES AND GASES
can be dangerous.
5.a.Welding may produce fumes and gases
hazardous to health. Avoid breathing these
fumes and gases.When welding, keep
your head out of the fume. Use enough
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.
5.b.
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.
5.c. 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.d. 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.e. Also see item 1.b.
Mar ‘95

FOR ELECTRICALLY
powered equipment.
8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.
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.
CYLINDER may explode
if damaged.
7.a. Use only compressed gas cylinders
containing the correct shielding gas for the
process used and properly operating
regulators designed for the gas and
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.
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.
7.d. Never allow the electrode, electrode holder or any other
electrically “hot”parts to touch a cylinder.
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.
iii
SAFETY
iii
Mar ‘95
WELDING SPARKS can
cause fire or explosion.
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.
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.
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.
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.
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).
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.
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.
6.h. Also see item 1.c.

iv
SAFETY
iv
Mar. ‘93
PRÉCAUTIONS DE SÛRETÉ
Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûretéspecifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûretégénérales suiv-
antes:
Sûreté Pour Soudage A L’Arc
1. Protegez-vous contre la secousse électrique:
a. Les circuits àl’électrode et àla piéce sont sous tension
quand la machine àsouder 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 couchépour 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 àsouder en bon et sûrétat
defonctionnement.
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 connectésàdeux machines àsouder
parce que la tension entre les deux pinces peut être le
total de la tension àvide des deux machines.
f. Si on utilise la machine àsouder 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.
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.
b. Porter des vêtements convenables afin de protéger la
peau de soudeur et des aides contre le rayonnement de
l‘arc.
c. Protéger l’autre personnel travaillant àproximitéau
soudage àl’aide d’écrans appropriés et non-inflammables.
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.
5. Toujours porter des lunettes de sécuritédans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones oùl’on pique le laitier.
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque d’incendie dûaux étincelles.
7. Quand on ne soude pas, poser la pince àune endroit isoléde
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque d’incendie.
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.
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.
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.
PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
1. Relier àla terre le chassis du poste conformement au code de
l’électricitéet aux recommendations du fabricant. Le dispositif
de montage ou la piece àsouder doit être branchéàune
bonne mise àla terre.
2. Autant que possible, I’installation et l’entretien du poste seront
effectués par un électricien qualifié.
3. Avant de faires des travaux àl’interieur de poste, la debranch-
er àl’interrupteur àla boite de fusibles.
4. Garder tous les couvercles et dispositifs de sûretéàleur
place.

vv
Thank You 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!
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.
This statement appears where the information must be followed to avoid minor personal injury or damage to
this equipment.
CAUTION
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.

vi
vi TABLE OF CONTENTS
Page
Installation .......................................................................................................Section A
Technical Specifications........................................................................................A-1
Safety Precautions..........................................................................................A-2
Select Suitable Location..................................................................................A-2
Stacking ..........................................................................................................A-2
Tilting...............................................................................................................A-2
Input and Grounding Connections ..................................................................A-2
Power Cord Connection..................................................................................A-2
Connection of Wire Feeders to V350-PIPE ....................................................A-2
Remote Control of Invertec.............................................................................A-3
Undercarriage Mountings................................................................................A-3
Parallel Operations..........................................................................................A-4
Quick Disconnect Plugs..................................................................................A-4
________________________________________________________________________
Operation .........................................................................................................Section B
Safety Precautions ................................................................................................B-1
General Description ..............................................................................................B-1
Duty Cycle .............................................................................................................B-1
Operational Features and Controls........................................................................B-1
Upper Control Panel.......................................................................................B-1, B-2
Hidden Middle Control Panel...................................................................B-2 thru B-3
Lower Case Panel .................................................................................................B-3
Remote Control of the Output Control and Weld Terminals..................................B-3
Auxiliary Power......................................................................................................B-4
Limitations..............................................................................................................B-4
Recommended Processes ....................................................................................B-4
_______________________________________________________________________
Accessories.....................................................................................................Section C
Options / Accessories............................................................................................C-1
Construction Version.............................................................................................C-1
Factory and Advance Process Version .............................................................................. C-1
Field Installed Options...........................................................................................C-1
________________________________________________________________________
Maintenance ....................................................................................................Section D
Safety Precautions ................................................................................................D-1
CAPACITOR DISCHARGE PROCEDURE..........................................................................D-1
VISUAL INSPECTION...................................................................................................D-1
ROUTINE MAINTENANCE ............................................................................................D-1
PERIODIC MAINTENANCE ...........................................................................................D-1
________________________________________________________________________
Section E ..............................................................................................Troubleshooting
Safety Precautions.................................................................................................E-1
How to Use Troubleshooting Guide.......................................................................E-1
Troubleshooting Guide ...........................................................................E-2 Thru E-3
Fault Codes ...........................................................................................................E-4
Displays.................................................................................................................E-5
________________________________________________________________________
Connection, Wiring Diagrams and Dimension Prints ..................................Section F
________________________________________________________________________
Parts List ......................................................................................................P412 Series
________________________________________________________________________

V350-PIPE
A-1
INSTALLATION
A-1
TECHNICAL SPECIFICATIONS - INVERTEC V350-PIPE
INPUT AC VOLTAGE & DC OUTPUT
Product Ordering Input AC Rated DC Output Output Open
Name Information Voltage Amps/Volts/Duty Cycle Range Circuit
(continuous) Voltage
200
Invertec 208-230/
V350- 380-400/ 350A / 34V / 60% 80VDC
PIPE K1728-9 415-460/ AMPS
60/50 Hz 575 300A / 32V /100% 5-425
1& 3 Phase
60/50 Hz
Voltage
200
208
230
380
400
415
460
575
200
208
230
380
400
415
460
575
Phases
1
1
1
1
1
1
1
1
3
3
3
3
3
3
3
3
Input Amps
300Amps @
32Volts(100%)
Not
Recommended
76
69
Not
Recommended
Not
Recommended
41
36
31
41
39
36
23
22
22
19
16
Input Amps
350Amps @
34Volts(60%)
Not
Recommended
94
85
Not
Recommended
Not
Recommended
54
42
37
50
50
42
28
27
26
23
18
Line Cord
AWG
---
2
4
---
---
6
8
8
6
6
8
8
8
8
8
8
Maximum
Fuse size
---
125A
125A
---
---
80A
70A
50A
80A
80A
70A
50A
50A
50A
50A
35A
RECOMMENDED INPUT WIRE AND FUSE SIZES FOR MAXIMUM RATED OUTPUT
OUTPUT CABLES, CONNECTIONS AND LIMITATIONS
Recommended Fuse Sizes Base On The U.S. National Electrical Code And Maximum Machine Outputs
Input 50/60 Hz Recommended
Note 1. Not rated is indicated by 4-x’s in the box on the rating plate.
Note 2. When operating on these inputs, the line cord should be changed to an input conductor of 6 AWG or larger.
Select The output cable size based upon the following chart.
Cable sizes for Combined Length of Electrode and Work Cable (Copper) 75C rated:
DUTY CYCLE
100%
60%
CURRENT
300
350
LENGTH UP TO 200FT.(61m)
1/0
1/0
200-250 FT. (61-76m)
1/0
2/0
Notes
Note 1
Note 2
Note 2
Note 1
Note 1
Note 2
Note 2
Note 2
Height Width Depth Weight with Cord
Invertec
V350 PIPE 14.8”(373mm) 13.3”(338mm) 27.8”*(706mm*) 81.5 Lbs.(37 Kg)
PHYSICAL DIMENSIONS
* Overall Length Including Handle, 27.8” (706mm)
TEMPERATURE RANGES
STORAGE TEMPERATURE RANGE
-40°C to +40°C
OPERATING TEMPERATURE RANGE
-20°C to +40°C

A-2
INSTALLATION
A-2
SELECT SUITABLE LOCATION
The Invertec V350-PIPE will operate in harsh environ-
ments. Even so, it is important that simple preventa-
tive measures are followed in order to assure long life
and reliable operation.
•The machine must be located where there is free cir-
culation of clean air such that air movement in the
back, out the sides and bottom 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.
•Keep machine dry. Shelter from rain and snow. Do
not place on wet ground or in puddles.
• DO NOT MOUNT OVER COMBUSTIBLE SURFACES.
Where there is a combustible surface directly under
stationary or fixed electrical equipment, that surface
shall be covered with a steel plate at least
.06”(1.6mm) thick, which shall extend not less than
5.90”(150mm) beyond the equipment on all sides.
STACKING
V350-PIPE cannot be stacked.
TILTING
Place the machine directly on a secure, level surface
or on a recommended undercarriage. The machine
may topple over if this procedure is not followed.
INPUT AND GROUNDING CONNECTIONS
•Only a qualified electrician should connect the
Invertec V350-PIPE. Installation should be made in
accordance with the appropriate National Electrical
Code, all local codes and the information detailed
below.
•When received directly from the factory, multiple
voltage machines are internally connected for
460VAC. If 460VAC is the desired input, then the
machine may be connected to the power system
without any setup required inside the machine.
•Initial 200VAC - 415VAC and 575VAC operation will
require an Input voltage panel setup.
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• TURN THE INPUT POWER OFF AT
THE DISCONNECT SWITCH BEFORE
ATTEMPTING TO CONNECT OR DIS-
CONNECT INPUT POWER LINES, OUTPUT
CABLES, OR CONTROL CABLES.
• Only qualified personnel should perform this
installation.
• Connect the green/yellow lead of the power
cord to ground per U.S.National Electrical
Code.
----------------------------------------------------------------------
WARNING
•Initial 200VAC - 415VAC and 575VAC operation will
require an Input voltage panel setup.
•Open the access panel on the rear of the machine.
•For 200 or 230: Position the large switch to 200-230.
For higher voltages: Position the large switch to
380-575.
•Move the "A" lead to the appropriate terminal.
POWER CORD CONNECTION
A 10 ft. power cord is provided and wired into the
machine. Follow the power cord connection instruc-
tions.
•Incorrect connection may result in equipment
damage.
-----------------------------------------------------------------------
Single Phase Input
Connect green lead to ground per National Electrical
Code.
Connect black and white leads to power.
Wrap red lead with tape to provide 600V insulation.
Three Phase Input
Connect green lead to ground per National Electric
Code.
Connect black, red and white leads to power.
CONNECTIONS OF WIRE FEEDERS TO V350-PIPE
LN-25 Connection Instructions
•Turn the Invertec power switch "off".
•Connect the electrode cable to the output terminal of
polarity required by electrode. Connect the work lead to
the other terminal.
•LN-25 with Remote Control options can be used. The 6-
Pin (K444-1) and 14-pin (K444-2) remotes can be con-
nected directly to the 6-pin & 14-pin MS-style connectors.
The 42 Volt Remote Voltage and Output Control (K624-1)
Kit can be connected to the V350’s 24/42 VAC connector
using Remote Control Cable assembly K627- [ ]. LN-25s
with a K431-1 remote kit can be connected to the V350’s
24/42 VAC connector using a K432 cable and K876
adapter. (See connection diagram S19899). Or the K432
cable could be modified with a K867 Universal Adapter
Plug (See connection diagram S19405) to connect it to
the V350’s 24/42 VAC connector.
WARNING
REMOTEPOWER
OFF
ON
A
AMPS
A
V
VOLTS
WELDTERMINALS
SELECT
OUTPUT
LINCOLN
ELECTRIC
INVERTEC V350-PRO
WARNING
WARNINGAVISODE
PRECAUCION
ATTENTION
!!
!!
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GREEN
RED
BLACK
WHITE
V350-PIPE
CAUTION
CAUTION

A-3
INSTALLATION
A-3
V350-PIPE
LN-7 Connection Instructions
•Turn the Invertec power switch "off".
•Connect the K480 control cable from the LN-7 to the
115VAC 14-pin wire feeder MS-style connector on the
rear of the Invertec.
•Connect the electrode cable to the output terminal of
the polarity required by electrode. Connect the work
lead to the other terminal.
•Set the meter polarity switch on the front of the Invertec
to coincide with wire feeder polarity used. The wire
feeder will now display the welding voltage.
•If K480 is not available, see connection diagram
S19404 for modification of K291 or K404 LN-7 input
cable with K867 Universal Adapter Plug.
•If a remote control such as K857 is to be used with the
LN-7, the remote can be connected directly to the 6-pin
MS-style connector on the front of the Invertec or use a
K864 adapter to connect the LN-7 and the remote to
the 115VAC 14-pin MS-style connector on the rear of
the Invertec. (See connection diagram S19901)
LN-10 Connection Instructions
•Turn the Invertec power switch "off"
•Connect the K1505 control cable from the LN-10 to the
Invertec 24/42VAC 14-pin MS-style connector on the
rear of the Invertec.
•Connect the electrode cable to the output terminal of
polarity required by the electrode. Connect the work
lead to the other terminal.
•Set the meter polarity switch on the front of the Invertec
to coincide with wire feeder polarity used.
•See the LN-10 manual for details on accessing Control
DIP Switch
LN-742 Connection Instructions
•Turn the Invertec power switch "off"
•Either a K591 or a K593 Input cable assembly is
required to connect the LN-742 to the Invertec.
•Connect the control cable from the LN-742 to the
24/42 VAC 14-pin wire feeder MS-style connector
on the rear of the Invertec.
•Connect the electrode cable to the output terminal
of the polarity required by electrode. Connect the
work lead to the other terminal.
•Set the meter polarity switch on the front of the
Invertec to coincide with wire feeder polarity used.
The wire feeder will now display the welding volt-
age.
•If a remote control such as K857 is to be used with the
LN-742, the remote can be connected directly to the 6-
pin MS-style connector on the front of the Invertec or use
a K864 adapter to connect the LN-742 and the remote to
the 24/42VAC 14-pin wire feeder MS-style connector on
the rear of the Invertec.
Cobramatic Connection Instructions
•Turn the Invertec power switch "off"
•Connect the control cable from the Cobramatic to
the 24/42 VAC 14-pin wire feeder MS-style con-
nector on the rear of the Invertec.
•Connect the electrode cable to the output terminal
of the polarity required by electrode. Connect the
work lead to the other terminal.
•Set the meter polarity switch on the front of the
Invertec to coincide with wire feeder polarity used.
•If a remote control such as K857 is to be used with
the Cobramatic, the remote can be connected
directly to the 6-pin MS-style connector on the front
of the Invertec or use a K864 adapter to connect
the cobramatic and the remote to the 24/42VAC
14-pin wire feeder MS-style connector on the rear
of the Invertec.
LN-23P Connection Instructions
1. Shut the welder off.
2. Connect the LN-23P as per instructions on the
appropriate connection diagram in Section F.
(NOTE): When connecting an LN-23P to the
Invertec.
3. Set the "VOLTMETER" switch to "-".
4. Set the "MODE" switch to "CV WIRE" position.
5.Set the "WELD TERMINALS" switch to
"REMOTELY CONTROLLED".
6. Set the "ARC CONTROL" knob to "0" initially and
adjust to suit.
General Instructions for Connection of Wire
Feeders to V350-PIPE
Wire feeders other than those listed above may be
used provided that the auxiliary power supply rating of
the V350-PIPE is not exceeded. K867 universal
adapter plug is required. See connection diagram
S24985 on page F-4.
REMOTE CONTROL OF INVERTEC
Remote Control K857, Hand Amptrol K963 and Foot
Amptrol K870.
UNDERCARRIAGE MOUNTINGS
5.50
10.00
MOUNTING HOLE LOCATIONS
M19527
1/4-20 NUT (4 PLACES)
NOTE: MOUNTING SCREWS CA
8/00
N NOT PROTRUDE MORE THAN
0.5 INCHES INSIDE THE MACHINE.
11.84
3.50