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IM526-B
™
December,1999
INVERTEC V300-PRO
For use with machines Code 10256 and 10257.
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.
Date of Purchase:
Serial Number:
Code Number:
Model:
Where Purchased:
OPERATOR’S MANUAL
• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
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4.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 weld-
ing area.
7.c.Do not add the fuel near an open flame weld-
ing arc or when the engine is running. Stop
the engine and allow it to cool before refuel-
ing to prevent spilled fuel from vaporizing 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.
4.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 circuits. This can
create fire hazards or overheat lifting chains or cables until
they fail.
---------------------------------------------------------------------------------------
7.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 mov-
ing parts when starting, operating or repair-
ing equipment.
4.h. Also see item 7c.
7.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.
CYLINDER may explode
if damaged.
5.a. Use only compressed gas cylinders contain-
ing 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.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.
5.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.
7.g. To prevent accidentally starting gasoline engines while turn-
ing the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.
5.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.
---------------------------------------------------------------------------------------
5.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.
7.h. To avoid scalding, do not remove the radia-
tor pressure cap when the engine is hot.
5.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.
5.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.
ELECTRIC AND MAGNETIC
FIELDS
5.g. Read and follow the instructions on compressed gas cylin-
ders, 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.
may be dangerous
8.a. Electric current flowing through any con-
ductor causes localized Electric and
Magnetic Fields (EMF). Welding current
creates EMF fields around welding cables
and welding machines.
FOR ELECTRICALLY
powered equipment.
8.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.
6.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.
8.c. Exposure to EMF fields in welding may have other health
effects which are now not known.
6.b. Install equipment in accordance with the U.S. National
Electrical Code, all local codes and the manufacturer’s rec-
ommendations.
8d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:
6.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.
8.d.1. Route the electrode and work cables together - Secure
them with tape when possible.
8.d.2. Never coil the electrode lead around your body.
FOR ENGINE
8.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.
powered equipment.
7.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.
---------------------------------------------------------------------------------------
8.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
8.d.5. Do not work next to welding power source.
7.b. Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes out-
doors.
---------------------------------------------------------------------------------------
Mar. ‘93
– 3 –
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zones où l’on pique le laitier.
PRÉCAUTIONS DE SÛRETÉ
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque d’incendie dû aux étincelles.
Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suiv-
antes:
7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un échauf-
fement et un risque d’incendie.
Sûreté Pour Soudage A L’Arc
1. Protegez-vous contre la secousse électrique:
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 levage,
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.
a. Les circuits à l’électrode et à la piéce sont sous tension
quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue ou
les vétements mouillés. Porter des gants secs et sans trous
pour isoler les mains.
b. Faire trés attention de bien s’isoler de la masse quand on
soude dans des endroits humides, ou sur un plancher met-
allique 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 defonc-
tionnement.
9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.
10. Ne pas souder en présence de vapeurs de chlore provenant
d’opérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.
d.Ne jamais plonger le porte-électrode dans l’eau pour le
refroidir.
e. Ne jamais toucher simultanément les parties sous tension
des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le total
de la tension à vide des deux machines.
11. Pour obtenir de plus amples renseignements sur la sûreté, voir
le code “Code for safety in welding and cutting” CSA Standard
W 117.2-1974.
f. Si on utilise la machine à souder comme une source de
courant pour soudage semi-automatique, ces precautions
pour le porte-électrode s’applicuent aussi au pistolet de
soudage.
2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de n’importe quelle partie du
corps.
3. Un coup d’arc peut être plus sévère qu’un coup de soliel, donc:
PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
a. Utiliser un bon masque avec un verre filtrant approprié ainsi
qu’un verre blanc afin de se protéger les yeux du rayon-
nement 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.
1. Relier à la terre le chassis du poste conformement au code de
l’électricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.
c. Protéger l’autre personnel travaillant à proximité au
soudage à l’aide d’écrans appropriés et non-inflammables.
2. Autant que possible, I’installation et l’entretien du poste seront
effectués par un électricien qualifié.
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.
3. Avant de faires des travaux à l’interieur de poste, la debrancher
à l’interrupteur à la boite de fusibles.
5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
4. Garder tous les couvercles et dispositifs de sûreté à leur place.
Mar. ‘93
– 4 –
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TABLE OF CONTENTS
Page
Safety Precautions .............................................................................................................2-4
Introductory Information.......................................................................................................6
Product Description..............................................................................................................7
Specifications.......................................................................................................................7
Installation .........................................................................................................................7-10
Safety Precautions ........................................................................................................7
Location.........................................................................................................................7
Electrical Installation......................................................................................................7
Input Voltage Setup.......................................................................................................8
Power Cord Connection ................................................................................................8
Connection of Wire Feeders to Invertec .....................................................................8-10
Output Cables & Plugs .................................................................................................10
Operating Instructions ......................................................................................................11-13
Safety Precautions .......................................................................................................11
Controls Description and Function.............................................................................11-13
Maintenance.....................................................................................................................13-14
Capacitor Discharge Procedure ...................................................................................13
Routine Maintenance....................................................................................................13
Periodic Maintenance...................................................................................................14
Troubleshooting Guide.....................................................................................................14-20
Matched Parts.....................................................................................................................20
Switch P.C. Board Replacement Procedure.......................................................................20
Replacement of Power Modules and Output Diodes .......................................................20-21
Connection Diagrams.......................................................................................................22-31
Wiring Diagrams...............................................................................................................32-33
Parts Lists......................................................................................................................appendix
– 5 –
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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
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.
Model Name & Number _____________________________________
Code & Serial Number _____________________________________
Date of Purchase _____________________________________
Whenever you request replacement parts for or information on this equipment always supply the information
you have recorded above.
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.
– 6 –
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PRODUCT DESCRIPTION
The Invertec V300-PRO is a 300 amp arc welding
power source that utilizes single or three phase input
power to produce either constant voltage or constant
current outputs. The V300-PRO is designed for 60 Hz
supply systems. The welding response of the Invertec
has been optimized for GMAW, SMAW, TIG and
FCAW processes. It is designed to be used with the
LN-25 and LN-7 semiautomatic wire feeders.
SPECIFICATIONS
Product
Name
Ordering
Information
Input AC
Voltage
Rated DC Output
Amps/Volts/Duty Cycle
Input Amps at Rated DC Output
Output
Range
(continuous)
Weight
with Gun
(net)
Dimensions
HxWxD
208
230
460
575
208/230/460
3 Phase
300A / 32V / 60%(1)
250A / 30V / 100%(1)
300A / 35/39/41V /60%(2)
48
37
49
43
33
48
24
19
28
60 Hz
18.7*x10.8x
22.2”
Invertec
V300-
PRO
K1349-3
K1349-4
208/230/460
1 Phase
250A / 30V / 60%(1)
160A / 28V / 100%(1)
250A / 37/41/43V / 60%(2)
69
53
75
62
47
67
38
29
42
AMPS
5-350
64 lbs.
(29 kg)
(475x274x
564 mm)
60 Hz
* Includes
handle
575
300A / 32V / 60%(1)
250A / 30V / 100%(1)
300A / 36V / 60%(2)
20
16
22
3 Phase
60 Hz
(1 )NEMA Class I Rated Output / Based on a 10 min. Period .
(2 )Lincoln plus rating.
* Overall Height Including Handle, (16.4” (417mm without handle).
INSTALLATION
WARNING
ELECTRICAL INSTALLATION
ELECTRIC SHOCK can kill.
• Have an electrician install and service
this equipment.
• Turn the input power off at the fuse
box before working on equipment.
1. The Invertec should be connected only by a quali-
fied electrician. Installation should be made in
accordance with the U.S. National Electrical Code,
all local codes and the information detailed below.
• Do not touch electrically hot parts.
---------------------------------------------------------------------
2. Single voltage, 575 VAC machines, can only be
connected to 575 VAC. No internal reconnection
for other input voltages is possible.
LOCATION
The Invertec has been designed with many features to
protect it from harsh environments. Even so, it is
important that simple preventative measures are fol-
lowed in order to assure long life and reliable opera-
tion.
• The machine must be located where there is free
circulation of clean air such that air movement into
the sides and out the bottom and front will not be
restricted. Dirt and dust that can be drawn into the
machine should be kept to a minimum. Failure to
observe these precautions can result in excessive
operating temperatures and nuisance shutdown of
the Invertec.
3. Initial 208 VAC and 230 VAC operation will require
a voltage panel setup, as will later reconnection
back to 460 VAC:
a. Open the access panel on the right side of
the machine.
b. For 208 or 230: Position the large switch to
200-230.
For 460: Position the large switch to 380-460.
c. Move the “A” lead to the appropriate terminal.
• Keep machine dry. Shelter from rain and snow. Do
not place on wet ground or in puddles.
– 7 –
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INPUT VOLTAGE SETUP
Recommended Fuse Sizes Based On The U.S.
National Electrical Code And Maximum
Machine Outputs
CAUTION
DO NOT ATTEMPT TO POWER THIS UNIT
FROM THE AUXILIARY POWER SUPPLY
Fuse Size in Amps
(Time Delay Fuses)
Input Volts(1)
OF AN ENGINE WELDER.
• Special protection circuits may operate, causing
loss of output.
3 phase
50/60 Hz
208
230
460
60
60
40
• The supply from engine welders often has exces-
sive voltage peaks because the voltage waveform
is usually triangular shaped instead of sinusoidal.
• If voltage peaks from the engine welder exceed
380V, the input circuits of this machine protecting
the filter capacitors, FETS and other components
from damage will not be energized .
1 phase
208(2)
230(2)
460
85
80
50
50/60 Hz
3 phase
60 Hz
575
30
(1)
(2)
Input voltage must be within ±10% of rated value.
When operating on these inputs, at outputs exceeding 200A/60%
or 165A/100%, the input line cord should be changed to an input
conductor of 6 AWG or larger.
---------------------------------------------------------------------
RECONNECT PROCEDURE
.
.
.
Disconnect input power before
inspecting or servicing machine.
1. BE SURE POWER SWITCH IS OFF.
Do not operate with wraparound
removed.
CONNECTION OF WIRE FEEDERS TO THE
INVERTEC
(Note: IEC units do not have 110 VAC auxiliary
power).
2. CONNECT LEAD ’A’ TO DESIRED
INPUT VOLTAGE RANGE.
Do not touch electrically live parts.
440-460V
380-415V
220-230V
200-208V
.
Only qualified persons should install,
use or service this equipment.
’A’
IF MACHINE CEASES TO OPERATE (NO METER, NO FAN)
AND THERE IS NO OTHER KNOWN FAILURE: CHECK FUSE;
REPLACE WITH A 3 AMP SLOW BLOW ONLY.
LN-25 Connection Instructions
3. POSITION SWITCH TO DESIRED INPUT VOLTAGE RANGE.
VOLTAGE=380-460V
1. Turn the Invertec power switch “off”.
VOLTAGE=200-230V
2. Connect the electrode cable to the output terminal
of polarity required by electrode. Connect the work
lead to the other terminal.
9-11-92
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO
U.S.A.
S20324
POWER CORD CONNECTION
3. LN-25 with remote control options K431 and K432.
Use K876 adapter with K432 cable or modify K432
cable with K867 universal adapter plug. See con-
nection diagram S19899 and S19309 or S19405 at
the back of this manual.
A 10 ft. (3.0m) power cord is provided and wired into
the machine. Follow the power cord connection
instructions. Incorrect connection may result in equip-
ment damage.
4. Place the local-remote switch in the “remote” posi-
tion if output control is desired at the wire feeder
rather than the Invertec. (LN-25 must have K431
and K432 options for remote output control opera-
tion).
BLACK
GREEN
RED
WHITE
LN-7 Connection Instructions
Single Phase Input
1. Connect green lead to ground per U.S. National
Electrical Code.
1. Turn the Invertec power switch “off”.
2. Connect black and white leads to power.
3. Wrap red lead with tape to provide 600V insula-
tion.
2. Connect the K480 control cable from the LN-7 to
the Invertec control cable connector. The control
cable connector is located at the rear of the
Invertec.
Three Phase Input
3. Connect the electrode cable to the output terminal
of polarity required by electrode. Connect the work
lead to the other terminal.
1. Connect green lead to ground per U.S. National
Electrical Code.
2. Connect black, red and white leads to power.
4. Place the local-remote switch in the “local” posi-
tion to allow output control at the Invertec. (K864
Install in accordance with all local and national electric
codes.
– 8 –
–
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remote control adapter and K857 remote control
are required for remote output control).
Parallel Operation
The Invertec’s are operable in parallel in both CC and
CV modes. For best results, the currents of each
machine should be reasonably well shared. As an
example, with two machines set up in parallel for a
400 amp procedure, each machine should be set to
deliver approximately 200 amps, not 300 amps from
one and 100 amps from the other. This will minimize
nuisance shutdown conditions. In general, more than
two machines in parallel will not be effective due to
the voltage requirements of procedures in that power
range.
5. Set the meter polarity switch on the rear of the
Invertec to coincide with wire feeder polarity used.
The wire feeder will now display the welding volt-
age.
6. If K480 is not available, see connection diagram
S19404 for modification of K291 or K404 LN-7
input cable with K867 universal adapter plug.
General Instructions for Connection of Wire
Feeders to Invertec
To set machine outputs, start with output control pots
and arc force/pinch pots in identical positions. If run-
ning in a CC mode, adjust outputs and arc forces to
maintain current sharing while establishing the proper
output current. In CV modes, the pots in identical
positions. Then switch the machine meters to amps
and adjust one of the output control pots for current
balance. Check the voltage and if readjustment is
necessary, repeat the current balancing step. Pinch
settings should also be kept identical on the
machines.
Wire feeders other than LN-7 and LN-25 may be used
provided that the auxiliary power supply capacity of
the Invertec is not exceeded. K867 universal adapter
plug is required. See connection diagram S19406 and
S19386 at the back of this manual for more informa-
tion.
Remote Control of Invertec
Remote control K857, hand amptrol K963 and foot
amptrol K870 require K864 remote control adapter.
See 19309 instruction at the back of this manual for
connection information.
K900-1 DC TIG Starter Connection
This versatile new kit was made to mate with the
Invertec.
K954-1 MIG PULSER
The MIG Pulser is a hand-held “pendant” type GMAW
Pulsing option for the V300 Power Source. Refer to
the Mig Pulser’s IM manual (IM555) for connection
information.
A control cable assembly is supplied with the kit to
connect the kit to an Invertec. The cable can be con-
nected, either end, at the DC TIG Starter kit and at
the Invertec by attaching to the 14-pin Amphenols on
the backs of each unit. Refer to diagram S20405 at
the back of this manual.
A negative output cable assembly is also supplied
with the DC TIG Starter kit to connect the kit with the
Invertec’s negative output terminal.
All Magnum™ one and two piece water-cooled torch-
es with 7/8 left-hand threads and gas-cooled torches
with 7/8 and 5/16 right-hand threads can be connect-
ed to the starter kit.
To secure the DC TIG Starter kit to the bottom of the
Invertec and for more detailed instructions, refer to
the K900-1 manual.
MAR97
– 9 –
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LN-9 GMA Connection Instructions
2. Slide rubber boot onto cable end. The boot end
may be trimmed to match the cable diameter.
Soap or other lubricant will help to slide the boot
over the cable.
1. Turn the Invertec power switch “off”.
BOOT
WELDING CABLE
2. Connect the K596 control cable assembly from the
LN-9 GMA to the Invertec control cable connector.
The control cable connector is located at the rear
of the Invertec.
25 mm
TRIM
1 in.
3. Connect the electrode cable to the output terminal
of polarity required by electrode. Connect the work
lead to the other terminal.
3. Slide the copper tube into the brass plug.
4. Insert cable into copper tube.
4. Place the local-remote switch in the “remote” posi-
tion to allow output control at the LN-9 GMA.
SET SCREW
5. Set the meter polarity switch on the rear of the
Invertec to coincide with wire feeder polarity used.
The wire feeder will now display the welding volt-
age.
BRASS PLUG
COPPER TUBE
5. 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.
6. K608-1 adapter is required in LN-9 GMA for LN-9
type control. K608-1 is installed in line with P10
connection at the LN-9 GMA voltage board. See
diagram S20607 at the back of this manual.
6. Slide rubber boot over brass plug. The rubber
boot must be positioned to completely cover all
electrical surfaces after the plug is locked into the
receptacle.
7. K442-1 Pulse Power Filter Board is also required
for GMAW, but should be disconnected for FCAW.
8. If K596 is not available, see connection diagram
S20608 at the back of this manual for modification
of K196 LN-9 GMA input cable with K867 universal
adapter plug.
Output Cables
Select the output cable size based upon the following
chart.
Cable sizes for Combined Length of Electrode and
Work Cable (Copper) 75° rated:
Duty
Length Up
61-76m
Cycle
Current
61m (200 ft.)
(200-250 ft.)
100%
60%
250
300
1/0
1/0
1/0
2/0
Quick Disconnect Plugs
A quick disconnect system is used for the welding
cable connections. The welding plug included with the
machine is designed to accept a welding cable size of
1/0 to 2/0.
1. Remote 25mm (1 in.) of welding cable insulation.
– 10 –
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Output Control - This controls the output voltage in
the CV modes and output current in the CC modes.
OPERATING INSTRUCTIONS
Control is provided over the entire output range of the
power source with 1 turn of the control knob. This con-
trol may be adjusted while under load to change
power source output.
WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground.
OUTPUT
• Always wear dry insulating gloves.
------------------------------------------------------------------------
FUMES AND GASES can be danger-
ous.
• Keep your head out of fumes.
• Use ventilation or exhaust to remove
fumes from breathing zone.
Local/Remote Switch - Place in the “LOCAL” posi-
tion to allow output adjustment at the machine. Place
in the “REMOTE” position to allow output adjustment
at the wire feeder or with a remote control option
package.
------------------------------------------------------------------------
WELDING SPARKS can cause fire or
explosion.
• Keep flammable material away.
• Do not weld on closed containers.
REMOTE
------------------------------------------------------------------------
ARC RAYS can burn eyes and skin.
• Wear eye, ear and body
protection.
------------------------------------------------------------
Digital Meter Switch - Select either “A” for amps or
“V” for volts to display welding current or voltage on
the meter.
See additional warning information at
front of this operator’s manual.
-----------------------------------------------------------
When welding current is not present, the meter will
display the set current for the CC modes or the set
voltage for the CV modes. This set reading is an indi-
cation of machine control setting. For a more precise
process reading, read meter during actual welding.
DUTY CYCLE
The Invertec is rated at 300 amps, 60% duty cycle for
3 phase inputs (based on a 10 minute cycle). It is also
rated at 250 amps, 100% duty cycle.
CONTROL FUNCTION / OPERATION
Power Switch - Place the lever in the “ON” position to
energize the machine. When the power is on, the digi-
tal meter will activate and the fan will operate.
Mode Switch
GTAW
Optimized for both scratch start and Hi-
Freq kit use.
OFF
CC SOFT
CC Crisp
Best for EXX18 thru EXX28 stick elec-
trodes.
Use this mode for stick welding with
EXX10 thru EXX14 electrodes. Non-
welding applications such as resistive
heating or output tests with resistive
loads should be done in this mode with
Arc Force Control set to minimum.
– 11 –
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CV FCAW
This setting has been optimized for
Innershield® and Outershield® flux-cored
electrodes.
Arc Force / Inductance Control
This control functions in all modes except GTAW. For
CC modes, this control acts as an Arc Force adjust-
ment. The arc is soft at the minimum settings and
more forceful or driving at the maximum settings.
Higher spatter levels may be present at the maximum
settings.
CV GMAW Short circuit, glob and spray transfer
solid wire and gas welding are done in
this mode. Low end procedures, less
than 17V, may operate better in the
FCAW mode. Voltage in the GMAW
mode can become erratic when
welding is attempted using voltages
equal to or less than 17V DC+.
For CV modes, this control will set the degree of
“pinch effect” which predominantly affects short circuit
transfer. In FCAW, the maximum setting is generally
preferred. With GMAW, the upper half of the range is
preferred with CO or high content CO mixed. The
2
2
SMAW
CRISP
lower half is for inert gas mixes.
FCAW
GMAW
SMAW
SOFT
GTAW
Output Terminals Switch
For processes and equipment that require energized
machine terminals (stick, TIG, air-carbon arc cutting or
hot tip LN-25), set the Output Terminals Switch to
“ON” position.
Recommended Arc Force / Inductance Settings
For Selected Applications
Set to the REMOTE (OFF) position when using LN-25
with K431 and K432 options or LN-7 which will allow
the gun trigger to energize the welding terminals.
Full Range Is 1-10,
1 Is Very Soft, 10 Is Very Crisp
ON
Nominal
Setting
Recommended
Mode
Process
Adjustment Range
OUTPUT
TERMINALS
CC SMAW 1
EXX18 thru
EXX28 stick
5
1 (gentle, may stick) to 9
(forceful, more spatter)
CC SMAW 2
CV FCAW
EXX10 thru
EXX14 stick
6
1
3 to 10
None
REMOTE
Air Carbon Arc
Cutting
Innershield or
Outershield
10
1
None
Air Carbon Arc
Cutting
None
CV GMAW* CO or 25% CO
2
7.5
5 to 10
2
or similar
gas mixes
98% Ar-2% O Ar,
2
5
1 to 10
90% He-7.5% Ar
2.5% CO and
2
other
predominantly
inert gases
* 1 = Lowest pinch, highest inductance and least spatter.
10 = Highest pinch, lowest inductance and most spatter.
– 12 –
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Meter Polarity Switch
MAINTENANCE
WARNING
ELECTRIC SHOCK can kill.
• Have an electrician install and service
this equipment.
• Turn the input power off at the fuse
box before working on equipment.
The wire feeder polarity switch is located at the rear of
the machine. The switch provides a work connection
for wire feeder voltmeters. Place the switch in the
position of the electrode polarity indicated by the
decal. The switch does not change the welding
polarity.
• Do not touch electrically hot parts.
---------------------------------------------------------------------
EXPLODING PARTS can cause
injury.
•
Failed parts can explode or cause other
parts to explode when power is applied.
•
Always wear a face shield and long sleeves when servicing.
----------------------------------------------------------------------------------
Capacitor Discharge Procedure
Auxiliary Power
1. Obtain a power resistor (25 ohms, 25 watts).
A 24 VAC @ 1 amp supply is included for use with the
LN-25 wire feeder (24 volts needed for K431 and
K432 options). This supply is protected by a self-
resetting current limiter.
2. Hold resistor body with electrically insulated glove.
DO NOT TOUCH TERMINALS. Connect the resis-
tor terminals across the two hex head cap screws
in the position shown. Hold in each position for 1
second. For 575 VAC only, repeat for second
capacitor. Repeat for the capacitor(s) on the other
side of the machine
A 42 VAC @ 5.5 amp supply is included for use with
other wire feeders. This supply is protected by a 6
amp breaker located on the rear of the machine.
A 110/115 VAC @ 2 amp supply is included for use
with the LN-7 or LN-9 GMA wire feeders. This supply
is protected by a 2.5 amp breaker located on the rear
of the machine. It is NOT available on IEC units.
RESISTOR
All three supplies are not to be loaded simultaneously.
CAPACITOR
TERMINALS
3. Use a DC voltmeter to check that voltage is not
present across either capacitor.
Routine Maintenance
1. Every 6 months or so the machine should be
cleaned with a low pressure airstream. Keeping
the machine clean will result in cooler operation
and higher reliability. Be sure to clean these areas:
• Power, switch, driver, protection and control printed
circuit boards.
• Power switch
• Main transformer
• Input rectifier (located in front of fan blade)
• Heat sink fins
2. Examine the sheet metal case for dents or breakage.
Repair the case as required. Keep the case in good con-
dition to insure that high voltage parts are protected and
correct spacings are maintained. All external sheet
metal screws must be in place to insure case strength
and electrical ground continuity.
– 13 –
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PERIODIC MAINTENANCE
TROUBLESHOOTING
WARNING
Overload Protection
ELECTRIC SHOCK can kill.
• Have an electrician install and service
this equipment.
• Turn the input power off at the fuse
box before working on equipment.
The machine is electrically protected from producing
high output currents. Should the output current
exceed 340-360A, an electronic protection circuit will
reduce the current to approximately 150A. The
machine will continue to produce this low current until
the protection circuit is reset. Reset occurs when the
output load is removed.
• Do not touch electrically hot parts.
---------------------------------------------------------------------
EXPLODING PARTS can cause
injury.
Thermal Protection
•
Failed parts can explode or cause other
parts to explode when power is applied.
Thermostats protect the machine from excessive
operating temperatures. Excessive temperatures may
be caused by a lack of cooling air or operating the
machine beyond the duty cycle and output rating. If
excessive operating temperature should occur, the
thermostat will prevent output voltage or current. The
meter will remain energized during this time.
•
Always wear a face shield and long sleeves when servicing.
----------------------------------------------------------------------------------
Visual Inspection
Clean interior of machine with a low pressure
airstream. Make a thorough inspection of all compo-
nents. Look for signs of overheating, broken leads or
other obvious problems. Many problems can be
uncovered with a good visual inspection.
Thermostats are self-resetting once the machine cools
sufficiently. If the thermostat shutdown was caused by
excessive output or duty cycle and the fan is operating
normally, the Power Switch may be left on and the
reset should occur within a 15 minute period. If the fan
is not turning or the air intake louvers were obstructed,
then the power must be switched off for 15 minutes in
order to reset. The fan problem or air obstruction must
also be corrected.
Open Circuit Voltage
The open circuit voltage of the Invertec V300-PRO is
60 to 75 VDC and cannot be adjusted by the output
control.
Test Conditions
Filter Capacitor Conditioning
Perform all testing at the lowest input voltage avail-
able, except where a higher voltage is required by a
test step. Make ohmmeter checks only after power
has been disconnected from machine and after
capacitors have been discharged.
A protection circuit is included to monitor the voltage
across filter capacitors C1 and C2 (also C14 and C15
on 575 VAC units). In the event that the capacitor volt-
age is too high, the protection circuit will prevent out-
put. The protection circuit may prevent output provid-
ing all these circumstances are met:
Certain high voltage connections have been insulated
with RTV sealant. It is necessary to break through the
sealant with a sharp probe in order to make voltage or
resistance checks.
1. Machine is internally connected for 380 VAC, or
higher input voltage.
2. Machine did not have power applied for many
months.
3. Machine did not produce output when power was
first switched on.
Disconnect any control cables from remote control
receptacle.
If these circumstances apply, the proper action is to
switch the machine on and let it idle for up to 30 min-
utes. This is required to condition the filter capacitors
after an extended storage time. The protection circuit
will automatically reset once the capacitor conditioning
and resultant voltage levels are acceptable. It may be
necessary to turn the power switch off and back on
again after this period.
– 14 –
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TROUBLESHOOTING GUIDE
Trouble
What To Do
Not output but fan operates and meter is on.
Perform test steps 1A and 1B.
Poor welding, weld settings drift, or output power is
low.
1. Check front panel wiring and controls.
2. Replace Control PC Board.
Main fuses open or Switch PC boards overheated.
Perform test steps 4 and 5 for both Switch PC Boards
and 7.
Output turns on momentarily then switches off and
repeats. Machine is connected for 380 VAC or higher
input voltage.
Perform test steps 3B, 4 and 5.
OCV is normal (approx. 65-75V) but output power is
low (less than 20V and 100A). Machine makes
squealing noise while under load. Machine is connect-
ed for 230 VAC, or lower, input voltage.
Perform test steps 4 and 5 for both Switch PC Boards.
Open circuit voltage is 1-2 volts.
Perform test step 6.
Output control not functioning on remote control. Local
control OK.
1. Check remote control assembly.
2. Check S3, Local/Remote switch.
Machine does not produce more than 250A output
when connected to 3 phase supply.
1. Replace main fuse if blown.
2. Replace Protection PC Board.
3. Replace Control PC Board.
4. Perform test step 7.
Machine does not produce more than 200 A output
while connected to 1 phase supply.
Normal operation.
Machine operates OK at 230 VAC or lower. No output
at 380 VAC or higher.
Perform test step 2.
Poor EXX10 stick electrode (5P) performance. Arc
“pops out”.
Check D6 and D12, L1 and L2.
Check reconnect panel - connections and fuse.
No output or reduced output the first time power is
applied to the machine.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
– 15 –
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TEST PROCEDURES
Next
Test
Step
Test
Result
Step
Test
Check
223A to 210
Conclusion
Repair Action
1A
1B
2
Output pilot circuit
(set S4 on)
24 VAC
Fan thermostat, choke
thermostat, T1 trans-
former and S4 all OK.
1B
0 VAC
15 VDC
0 VDC
Check above compo-
nents.
302 (pos) to 275D (neg)
313 (neg) to 311 (pos)
T1 and 15V power sup-
ply OK.
2
Check T1 and Power PC
Board.
Protection PC
board output (set
S4 on)
<1 VDC
>5 VDC
Protection PC Board OK
Replace Power
and Control PC
Boards
3A
3A
Static capacitor
balance (set S4
off)
Compare voltage across
terminals 9 & 12 of each
Switch PC Board.
<25 VDC
difference
between
readings
C1, C2, R1, R9 - OK
(575 VAC machine C14,
C15 - OK)
575 VAC -- 407 VDC
460 VAC -- 325 VDC
440 VAC -- 311 VDC
415 VAC -- 293 VDC
380 VAC -- 269 VDC
575 VAC only - compare
voltage across 9A & 13
and 13 & 12A; then, 9B &
15 and 15 & 12B
380 VAC input
and higher test
Replace
Protection PC
Board
3B
>25 VDC
difference
Check above compo-
nents.
3B
Dynamic capaci-
tor balance (set
S4 on)
Connect as in step 3A.
Same voltages as above.
<25 VDC
>25 VDC
OK
380 VAC input
and higher test
Power PC Board or
Switch PC Boards are
damaged.
4
and
5
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
– 16 –
–
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Next
Test
Step
Test
Result
Step
Test
Conclusion
OK
Repair Action
Check
4
Switch PC Board
resistance test.
cont
5
Terminals on Switch
PC Board:
1/8 (pos) to
>1K ohms
<100 ohms
Short
Replace Switch PC Board
12 (neg)
No dynamic test
is possible.
OK
cont
5
1/8 (neg) to
12 (pos)
<100 ohms
>1K ohms
>1K ohms
<100 ohms
<100 ohms
>1K ohms
<100 ohms
>1K ohms
>1K ohms
<100 ohms
<100 ohms
>1K ohms
>1K ohms
<100 ohms
>1K ohms
<100 ohms
<100 ohms
>1K ohms
<100 ohms
>1K ohms
>1K ohms
<100 ohms
Open
OK
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Replace Switch PC Board
Remove leads
401/403, 1/8, 9,
12, 4/5 and
cont
5
9 (pos) to
4/5 (neg)
Short
OK
402/404.
cont
5
9 (neg) to
4/5 (pos)
Open
OK
cont
5
1/8 (pos) to
9 (neg)
Open
OK
cont
5
1/8 (neg) to
9 (pos)
Short
OK
cont
5
12 (pos) to
4/5 (neg)
Open
OK
cont
5
12 (neg) to
4/5 (pos)
Short
OK
cont
5
12 (pos) to
401/403 (neg)
Short
OK
cont
5
12 (neg) to
401/403 (pos)
Open
OK
cont
5
9 (pos) to
402/404 (neg)
Open
OK
cont
5
9 (neg) to
402/404 (pos)
Short
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
– 17 –
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Next
Test
Step
Test
Result
Step
Test
Snubber
Conclusion
OK
Repair Action
Check
5
cont
cont
cont
cont
Lead 401 to terminal
12
25 ohms
Resistors
R4 open
R4 shorted
Replace R4
>30 ohms
<20 ohms
Disconnect leads
401, 402, 403 and
404 from Switch
PC Board
OK
25 ohms
Lead 402 to terminal
9
R5 open
R5 shorted
Replace R5
>30 ohms
<20 ohms
OK
25 ohms
R6 open
R6 shorted
Lead 403 to terminal
12
>30 ohms
<20 ohms
Replace R6
OK
25 ohms
R7 open
R7 shorted
Replace R7
>30 ohms
<20 ohms
Lead 404 to terminal
9
Shorted output
diode D1 thru
D12
Test individually
<100 ohms
>200 ohms
6
Output diodes
+ output plug (pos)
to
- output plug (neg)
Output diodes OK
Remove output
load
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
– 18 –
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Next
Test
Step
Test
Result
Step
Test
Conclusion
OK
Repair Action
Check
7
D13 Input
Rectifier
cont
4-5
9 (pos) to H1 (neg)
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
9 (pos) to A (neg)
9 (pos) to H5 (neg)
12 (neg) to H1 (pos)
12 (neg) to A (pos)
12 (neg) to H5 (pos)
9 (neg) to H1 (pos)
9 (neg) to A (pos)
9 (neg) to H5 (pos)
12 (pos) to H1 (neg)
12 (pos) to A (neg)
12 ( pos) to H5 (neg)
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
>1K ohms
<100 ohms
Shorted
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
OK
cont
4-5
<100 ohms
>1K ohms
Open
Replace D13, inspect S1,
test C1 and C2
– 19 –
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Matched Parts
5. Thoroughly clean the heat sink surface.
Certain parts must be replaced in matched sets.
Matched sets are required in the following areas:
6. Apply a thin layer (ideally .005-.010”) of Dow 340
Heat Sink Compound to the module mounting sur-
faces of the new Switch PC Board and a thinner
layer (.002”) to the capacitor terminals. Keep the
heat sink compound away from the screw threads
since this compound will affect the torque specifi-
cations.
Output diodes: D1, D2, D3, D4 and D5
Output diodes: D7, D8, D9, D10 and D11
Capacitor bleeder resistors: R1 and D9
Capacitors: C1 and C2
Capacitors: C1, C2, C14 and C15 (575 VAC only)
7. Carefully place the Switch PC Board onto the heat
sink. Be sure the mounting holes are lined up
before making full contact with the heat sink.
Switch PC Board Repairs
If a test indicates that a Switch PC Board is defective,
both Switch PC Boards must be replaced.
8. Caution: The heat sink and the capacitor terminals
are relatively soft material and it is very easy to
cross-thread the mounting screws. Holding the
Switch PC Board, install the 4 socket head cap
screws, finger tight only. Then install the hex head
cap screws into the capacitor, finger tight only.
Replacement boards must have completely identical
part numbers. A defective module is likely to damage
other devices in the power circuitry. The defect may
be subtle and not detectable by an ohmmeter mea-
surement. Unknown defective parts may cause newly
replaced parts to fail.
9. Torque the 4 socket head cap screws to 44 inch-
lbs force (5 N - m). Then torque the capacitor hex
head cap screws to 55 inch-lbs force (6 N - m).
In addition to replacing the Switch PC Boards, replace
C1 and C2 (also C14 and C15 of the 575 VAC V300-
PRO) if the following conditions are met:
10. Reconnect all the leads to the board.
1. Machine was operating from 380 VAC or higher
supply when failure occurred.
2. Switch PC Boards have burned areas.
Before applying input power to the machine, check all
electrical connections. An incorrect connection will result
in machine damage when the power is switched on.
Switch PC Board Replacement Procedure
Test After Repair
WARNING
ELECTRIC SHOCK can kill.
• Have an electrician install and service
this equipment.
• Turn the input power off at the fuse
box before working on equipment.
1. Short terminals 14 and 53 of the Protection PC
Board. Connect an ohmmeter, set for X1000
range, to terminals 9 (+) and 12 (-) of the Switch
PC Board. The meter will show the capacitors
charging up. The meter may take a minute or so to
stabilize. The value must not exceed 8600 ohms.
Test both boards. For 575V only units - measure
across each power capacitor, 2 per switch board;
All four readings should be approximately 5,000
ohms.
• Do not touch electrically hot parts.
---------------------------------------------------------------------
EXPLODING PARTS can cause
injury.
•
Failed parts can explode or cause other
parts to explode when power is applied.
2. If OK, remove the short and proceed with the
power test.
•
Always wear a face shield and long sleeves when servicing.
----------------------------------------------------------------------------------
3. Fuse input supply with 5 amp fuses.
1. Carefully disconnect the leads at the top of the
Switch PC Board.
4. Check output open circuit voltages. Do not apply
output load.
2. Remove the four socket head cap screws with a
3/16” hex key wrench.
5. Connect machine for 460 (V300-PRO), or 575
(V300-PRO, 575V), or 380, 415 or 440 (V300-I)
VAC input.
3. While holding the Switch PC Board, remove the
hex head cap screws from the center area of the
board.
6. Check output open circuit voltages. Do not apply
output load.
4. Remove the board.
7. Fuse for 20 amps and test under load.
– 20 –
–
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Replacement of Power Modules and Output
Diodes
The compound should be applied to the heat sink in a
very thin layer, less than 0.001 in. DO NOT apply on
diode stud and mounting nut threads.
Input rectifier, D13, is a power module. When mount-
ing power modules, the heat sink and module mount-
ing surface should be clean and free of burrs and for-
eign material. Apply heatsink compound (Dow 340) as
a uniform layer ideally .010” thick, to eliminate all air
pockets. This may be verified by mounting and then
removing the module. When removed, the compound
on both surfaces will appear textured as if a vacuum
had created veinlike ridges when the parts were sepa-
rated. If the compound does not have this appear-
ance, apply more heatsink compound and recheck.
Components must have proper torque applied to
mounting screws and to electrical terminals. Torque
the modules according to the following:
Replacement of output diodes D1 thru D12 is similar.
Clean and brighten mounting surface with fine steel
wool. Compound should be used on surface between
diode and heat sink when mounting individual diodes.
Component to Heat Sink
Torque ±10%
Terminal
Torque ±10%
Component
Switch Board
Module
44 Inch - Lbs.(1)
(5N - m)
N.A.
Capacitor
N.A.
55 Inch - Lbs.
(6.3 N - m)
Input Rectifier
(M15454-1)
6 Inch - Lbs.(2)
(0.7 N - m)
26 Inch - Lbs.
3 (N - m)
Output Diode
(M15482-2)
25 Inch - Lbs.
(3 N - m)
N.A.
(1) Retorque after 3 hours to allow for spread of compound.
(2) Tighten in staggered fashion one quarter turn at a time.
Environment Protection
Printed Circuit Board Replacement
High voltage connections are covered with an RTV
sealant to prevent malfunction in severe environ-
ments. Sealant must be applied to connections which
have been opened or otherwise lost their protection. A
noncorrosive electronic grade sealant such as Dow
Corning 3140, 3145, 738, Columbus Adhesives 0172
or GE RTV-162 is recommended. Sealant may also
be purchased from Lincoln Electric (order E2519
Silicone Rubber RTV Coating). Apply sealant after
machine is repaired and tested.
1. Handle PC Boards by edges only.
2. Store PC Boards only in the bags that disperse
static charges.
3. Inspect PC Board for burned conductors or com-
ponents. If damage is visible, inspect the machine
wiring for grounds or shorts to avoid damaging a
new PC Board.
4. If there is no visible damage to the PC Board,
install a new PC Board and see if the problem is
fixed. If the problem is fixed by the new board,
reinstall the old board and see if the problem reoc-
curs. If the problem does not reoccur, check the
wiring harness and plugs for loose connections.
High voltage areas which require sealant are as listed:
- Input rectifier D13, all 5 terminals.
– 21 –
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R 1 1
R 1 2
R 8
R 1
R 9
MAR97
– 32 –
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R 1 1
R 1 2
R 8
R 9
R 1
MAR97
– 33 –
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NOTES
INVERTEC V300-PRO & V300-I
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NOTES
INVERTEC V300-PRO & V300-I
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NOTES
INVERTEC V300-PRO & V300-I
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Now Available...12th Edition
New Lessons in Arc Welding
The Procedure Handbook of Arc Welding
Lessons, simply written, cover manipulatory techniques;
machine and electrode characteristics; related subjects,
such as distortion; and supplemental information on arc
welding applications, speeds and costs. Practice materials,
exercises, questions and answers are suggested for each
lesson.
With over 500,000 copies of previous editions published
since 1933, the Procedure Handbook is considered by many to
be the “Bible” of the arc welding industry.
This printing will go fast so don’t delay. Place your
order now using the coupon below.
528 pages, well illustrated, 6” x 9” size, bound in simulated,
gold embossed leather.
The hardbound book contains over 750 pages of welding
information, techniques and procedures. Much of this material
has never been included in any other book.
$5.00 postage paid U.S.A. Mainland
A must for all welders, supervisors, engineers and
designers. Many welding instructors will want to use the book
as a reference for all students by taking advantage of the low
quantity discount prices which include shipping by
4th class parcel post.
$15.00 postage paid U.S.A. Mainland
Need Welding Training?
The Lincoln Electric Company operates the oldest and
most respected Arc Welding School in the United States at its
corporate headquarters in Cleveland, Ohio. Over 100,000 stu-
dents have graduated. Tuition is low and the training is
“hands on”
How To Read Shop Drawings
The book contains the latest information and application
data on the American Welding Society Standard Welding
Symbols. Detailed discussion tells how engineers and
draftsmen use the “short-cut” language of symbols to pass
on assembly and welding information to shop personnel.
For details write:
Lincoln Welding School
22801 St. Clair Ave.
Cleveland, Ohio 44117-1199.
Practical exercises and examples develop the reader’s ability
to visualize mechanically drawn objects as they will appear
in their assembled form.
and ask for bulletin ED-80 or call 216-383-2259 and ask for the
Welding School Registrar.
187 pages with more than 100 illustrations. Size 8-1/2” x 11”
Durable, cloth-covered board binding.
Lincoln Welding School
BASIC COURSE
5 weeks of fundamentals
$700.00
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New Lessons in Arc Welding
Procedure Handbook “Twelfth Edition”
How to Read Shop Drawings
Incentive Management
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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
bajo carga con la piel o ropa moja-
da.
● Aislese del trabajo y de la tierra.
fuera del área de trabajo.
cuerpo.
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.
– 38 –
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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.
– 39 –
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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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