Page 1
INSTRUCTION MANUAL
VI 450
WELDING POWER SOURCE
V
A
VOLTAGE
PRESET
(CONTACTOR ON)
VI-450
VOLTAGE
4
5
3
6
INDUCTANCE
2
LOCAL
7
1
4
5
3
REMOTE
6
8
MIN
2
9
7
1
MAX
MIN
8
9
MAX
ON
OFF
F-15-098-A
February, 1995
SLOPE
300A MAX
INDUCTANCE
This manual provides installation and operation instructions for the following VI 450 power sources:
P/N 33322 - 230/460/575 V ac, 60 Hz
P/N 33323 - 220/380/415 V ac, 50 Hz
NOTE: This manual is also suitable for use with the L-TEC VI-450. It is also suitable for use with the ESAB Phase Arc II 450
made prior to April 1, 1995.
These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and
safe practices for electric welding equipment, we urge you to read our booklet, "Precautions and Safe Practices for
Arc Welding, Cutting, and Gouging," Form 52-529. Do NOT permit untrained persons to install, operate, or maintain
this equipment. Do NOT attempt to install or operate this equipment until you have read and fully understand these
instructions. If you do not fully understand these instructions, contact your supplier for further information. Be sure
to read the Safety Precautions before installing or operating this equipment.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
ESAB Welding &
Cutting Products
Page 2
USER RESPONSIBILITY
This equipment will perform in conformity with the description thereof contained in this manual and accompanying
labels and/or inserts when installed, operated, maintained and repaired in accordance with the instructions provided. This equipment must be checked periodically. Defective equipment should not be used. Parts that are
broken, missing, worn, distorted or contaminated should be replaced immediately. Should such repair or replacement become necessary, the manufacturer recommends that a telephone or written request for service advice be
made to the Authorized Distributor from whom purchased.
This equipment or any of its parts should not be altered without the prior written approval of the manufacturer. The
user of this equipment shall have the sole responsibility for any malfunction which results from improper use, faulty
maintenance, damage, improper repair or alteration by anyone other than the manufacturer or a service facility
designated by the manufacturer.
TABLE OF CONTENTS
SECTION TITLE PAGE
PARAGRAPH
SECTION 1 DESCRIPTION ................................................................................................................................... 5
1.1 General ............................................................................................................................................... 5
1.2 Receiving-Handling ............................................................................................................................ 5
1.3 Description ......................................................................................................................................... 5
1.3.1 Available Models ................................................................................................................................ 5
1.3.2 Power Source ..................................................................................................................................... 6
1.3.3 Volt-Ampere Characteristics .............................................................................................................. 6
1.4 Optional Accessories ......................................................................................................................... 6
1.4.1 HC-3B Remote Voltage and Contactor Hand Pendant Control ........................................................ 6
1.4.2 TR-22 Truck Kit .................................................................................................................................. 6
1.5 Safety ................................................................................................................................................. 6
SECTION 2 INSTALLATION ................................................................................................................................. 7
2.1 Location .............................................................................................................................................. 7
2.2 Receiving, Unpacking and Placement ............................................................................................... 7
2.3 Primary (Input) Electrical Connection ................................................................................................ 7
2.4 Secondary (Output) Welding Connections ........................................................................................ 8
2.5 Power Source/Wire Feeder/Control Interconnections ....................................................................... 9
2.5.1 Wire Feeder Control ........................................................................................................................... 9
2.5.2 Remote Voltage and Contactor Control ............................................................................................. 9
2.5.3 Auxiliary 115 V ac Receptacle ........................................................................................................... 9
SECTION 3 OPERATION ...................................................................................................................................... 11
3.1 Controls .............................................................................................................................................. 11
3.1.1 Power Switch (ON-OFF) .................................................................................................................... 11
3.1.2 Voltage Preset/Contactor Control Switch .......................................................................................... 11
3.1.3 Local/Remote Switch ......................................................................................................................... 11
3.1.4 Voltage Control ................................................................................................................................... 11
3.1.5 Inductance Control ............................................................................................................................. 12
3.1.6 Over Temperature Indicator ............................................................................................................... 12
3.1.7 Voltmeter and Ammeter ..................................................................................................................... 12
3.2 Sequence of Operation ...................................................................................................................... 12
3.2.1 General Procedures for Mig and Sub Arc .......................................................................................... 12
3.2.2 Specific Procedures for Mig and Sub Arc .......................................................................................... 12
SECTION 4 MAINTENANCE ................................................................................................................................. 13
4.1 General ............................................................................................................................................... 13
4.2 Cleaning ............................................................................................................................................. 13
4.3 Inspection and Service ....................................................................................................................... 13
4.3.1 Fan Motor ........................................................................................................................................... 13
4.3.2 Transformer ........................................................................................................................................ 13
4.3.3 Wire Feeder and Control Circuits ...................................................................................................... 13
4.3.4 Over Temperature Protection ............................................................................................................ 13
SECTION 5 TROUBLESHOOTING ....................................................................................................................... 14
5.1 General ............................................................................................................................................... 14
5.2 Testing and Replacing Bridge Assembly Components ..................................................................... 14
SECTION 6 PARTS ................................................................................................................................................ 29
6.1 General ............................................................................................................................................... 29
6.2 Ordering .............................................................................................................................................. 29
Page 3
SAFETY PRECAUTIONS
WARNING: These Safety Precautions are for
your protection. They summarize precautionary information from the references listed in
Additional Safety Information section. Before
performing any installation or operating procedures, be
sure to read and follow the safety precautions listed below
as well as all other manuals, material safety data sheets,
labels, etc. Failure to observe Safety Precautions can result
in injury or death.
PROTECT YOURSELF AND OTHERS --
Some welding, cutting, and gouging
processes are noisy and require ear
protection. The arc, like the sun, emits
ultraviolet (UV) and other radiation and
can injure skin and eyes. Hot metal can cause burns.
Training in the proper use of the processes and equipment is essential to prevent accidents. Therefore:
1. Always wear safety glasses with side shields in any work
area, even if welding helmets, face shields, and goggles
are also required.
2. Use a face shield fitted with the correct filter and cover
plates to protect your eyes, face, neck, and ears from
sparks and rays of the arc when operating or observing
operations. Warn bystanders not to watch the arc and
not to expose themselves to the rays of the electric-arc
or hot metal.
3. Wear flameproof gauntlet type gloves, heavy long-sleeve
shirt, cuffless trousers, high-topped shoes, and a welding helmet or cap for hair protection, to protect against
arc rays and hot sparks or hot metal. A flameproof apron
may also be desirable as protection against radiated
heat and sparks.
4. Hot sparks or metal can lodge in rolled up sleeves,
trouser cuffs, or pockets. Sleeves and collars should be
kept buttoned, and open pockets eliminated from the
front of clothing
5. Protect other personnel from arc rays and hot sparks
with a suitable non-flammable partition or curtains.
6. Use goggles over safety glasses when chipping slag or
grinding. Chipped slag may be hot and can fly far.
Bystanders should also wear goggles over safety glasses.
FIRES AND EXPLOSIONS -- Heat from
flames and arcs can start fires. Hot slag
or sparks can also cause fires and explosions. Therefore:
1. Remove all combustible materials well away from the
work area or cover the materials with a protective nonflammable covering. Combustible materials include wood,
cloth, sawdust, liquid and gas fuels, solvents, paints and
coatings, paper, etc.
2. Hot sparks or hot metal can fall through cracks or
crevices in floors or wall openings and cause a hidden
smoldering fire or fires on the floor below. Make certain
that such openings are protected from hot sparks and
metal.“
3. Do not weld, cut or perform other hot work until the
workpiece has been completely cleaned so that there
are no substances on the workpiece which might produce flammable or toxic vapors. Do not do hot work on
closed containers. They may explode.
4. Have fire extinguishing equipment handy for instant use,
such as a garden hose, water pail, sand bucket, or
portable fire extinguisher. Be sure you are trained in its
use.
5. Do not use equipment beyond its ratings. For example,
overloaded welding cable can overheat and create a fire
hazard.
6. After completing operations, inspect the work area to
make certain there are no hot sparks or hot metal which
could cause a later fire. Use fire watchers when necessary.
7. For additional information, refer to NFPA Standard 51B,
"Fire Prevention in Use of Cutting and Welding Processes", available from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269.
ELECTRICAL SHOCK -- Contact with live
electrical parts and ground can cause
severe injury or death. DO NOT use AC
welding current in damp areas, if movement is confined, or if there is danger of
falling.
1. Be sure the power source frame (chassis) is connected
to the ground system of the input power.
2. Connect the workpiece to a good electrical ground.
3. Connect the work cable to the workpiece. A poor or
missing connection can expose you or others to a fatal
shock.
4. Use well-maintained equipment. Replace worn or damaged cables.
5. Keep everything dry, including clothing, work area, cables,
torch/electrode holder, and power source.
6. Make sure that all parts of your body are insulated from
work and from ground.
7. Do not stand directly on metal or the earth while working
in tight quarters or a damp area; stand on dry boards or
an insulating platform and wear rubber-soled shoes.
8. Put on dry, hole-free gloves before turning on the power.
9. Turn off the power before removing your gloves.
10. Refer to ANSI/ASC Standard Z49.1 (listed on next page)
for specific grounding recommendations. Do not mistake
the work lead for a ground cable.
ELECTRIC AND MAGNETIC FIELDS —
May be dangerous. Electric current flowing through any conductor causes localized Electric and Magnetic Fields
(EMF). Welding and cutting current creates EMF around welding cables and
welding machines. Therefore:
1. Welders having pacemakers should consult their physician before welding. EMF may interfere with some pacemakers.
2. Exposure to EMF may have other health effects which are
unknown.
3. Welders should use the following procedures to minimize
exposure to EMF:
A. Route the electrode and work cables together. Secure
them with tape when possible.
B. Never coil the torch or work cable around your body.
C. Do not place your body between the torch and work
cables. Route cables on the same side of your body.
D. Connect the work cable to the workpiece as close as
possible to the area being welded.
E. Keep welding power source and cables as far away
from your body as possible.
3
10/98
Page 4
FUMES AND GASES -- Fumes and
gases, can cause discomfort or harm,
particularly in confined spaces. Do
not breathe fumes and gases. Shielding gases can cause asphyxiation.
Therefore:
1. Always provide adequate ventilation in the work area by
natural or mechanical means. Do not weld, cut, or gouge
on materials such as galvanized steel, stainless steel,
copper, zinc, lead, beryllium, or cadmium unless positive
mechanical ventilation is provided. Do not breathe fumes
from these materials.
2. Do not operate near degreasing and spraying operations. The heat or arc rays can react with chlorinated
hydrocarbon vapors to form phosgene, a highly toxic
gas, and other irritant gases.
3. If you develop momentary eye, nose, or throat irritation
while operating, this is an indication that ventilation is not
adequate. Stop work and take necessary steps to improve ventilation in the work area. Do not continue to
operate if physical discomfort persists.
4. Refer to ANSI/ASC Standard Z49.1 (see listing below)
for specific ventilation recommendations.
5. WARNING: This product, when used for welding or
cutting, produces fumes or gases which
contain chemicals known to the State of
California to cause birth defects and, in
some cases, cancer. (California Health &
Safety Code §25249.5 et seq.)
CYLINDER HANDLING -- Cylinders, if
mishandled, can rupture and violently
release gas. Sudden rupture of cylinder, valve, or relief device can injure or
kill. Therefore:
1. Use the proper gas for the process and use the proper
pressure reducing regulator designed to operate from
the compressed gas cylinder. Do not use adaptors.
Maintain hoses and fittings in good condition. Follow
manufacturer's operating instructions for mounting regulator to a compressed gas cylinder.
2. Always secure cylinders in an upright position by chain
or strap to suitable hand trucks, undercarriages, benches,
walls, post, or racks. Never secure cylinders to work
tables or fixtures where they may become part of an
electrical circuit.
3. When not in use, keep cylinder valves closed. Have
valve protection cap in place if regulator is not connected. Secure and move cylinders by using suitable
hand trucks. Avoid rough handling of cylinders.
4. Locate cylinders away from heat, sparks, and flames.
Never strike an arc on a cylinder.
5. For additional information, refer to CGA Standard P-1,
"Precautions for Safe Handling of Compressed Gases in
Cylinders", which is available from Compressed Gas
Association, 1235 Jefferson Davis Highway, Arlington,
VA 22202.
EQUIPMENT MAINTENANCE -- Faulty or
improperly maintained equipment can
cause injury or death. Therefore:
1. Always have qualified personnel perform the installation, troubleshooting, and maintenance work. Do not
perform any electrical work unless you are qualified to
perform such work.
2. Before performing any maintenance work inside a power
source, disconnect the power source from the incoming
electrical power.
3. Maintain cables, grounding wire, connections, power
cord, and power supply in safe working order. Do not
operate any equipment in faulty condition.
4. Do not abuse any equipment or accessories. Keep
equipment away from heat sources such as furnaces,
wet conditions such as water puddles, oil or grease,
corrosive atmospheres and inclement weather.
5. Keep all safety devices and cabinet covers in position
and in good repair.
6. Use equipment only for its intended purpose. Do not
modify it in any manner.
ADDITIONAL SAFETY INFORMATION -- For
more information on safe practices for electric arc welding and cutting equipment, ask
your supplier for a copy of "Precautions and
Safe Practices for Arc Welding, Cutting and
Gouging", Form 52-529.
The following publications, which are available from the
American Welding Society, 550 N.W. LeJuene Road, Miami, FL 33126, are recommended to you:
1. ANSI/ASC Z49.1 - "Safety in Welding and Cutting"
2. AWS C5.1 - "Recommended Practices for Plasma Arc
Welding"
3. AWS C5.2 - "Recommended Practices for Plasma Arc
Cutting"
4. AWS C5.3 - "Recommended Practices for Air Carbon
Arc Gouging and Cutting"
5. AWS C5.5 - "Recommended Practices for Gas Tungsten
Arc Welding“
6. AWS C5.6 - "Recommended Practices for Gas Metal Arc
Welding"“
7. AWS SP - "Safe Practices" - Reprint, Welding Handbook.
8. ANSI/AWS F4.1, "Recommended Safe Practices for
Welding and Cutting of Containers That Have Held
Hazardous Substances."
MEANING OF SYMBOLS - As used throughout this manual: Means Attention! Be Alert!
Your safety is involved.
Means immediate hazards which, if
not avoided, will result in immediate,
serious personal injury or loss of life.
Means potential hazards which could
result in personal injury or loss of life.
Means hazards which could result in
minor personal injury.
4
SP98-10
Page 5
SECTION 1
DESCRIPTION
1.1 GENERAL
This manual has been prepared for use by an experienced operator. It provides information to familiarize
the operator with the design, installation and operation
of this equipment. DO NOT attempt to install or operate
this equipment until you have read and fully understood
these instructions. The information presented here
should be given careful consideration to ensure optimum performance of this equipment.
1.2 RECEIVING-HANDLING
Upon receipt, remove all packing material and carefully
inspect for any damage that may have occurred during
shipment. Any claims for loss or damage that may have
occurred in transit must be filed by the purchaser with
the carrier. A copy of the bill of lading and freight bill will
be furnished by the carrier on request.
Table 2-1. Specifications
OPEN CIRCUIT VOLTAGE (Uo) 13-52 V
DUTY CYCLE 65% 100%
When requesting information concerning this equipment, it is essential that Stock, Serial and Model numbers of the equipment be supplied.
1.3 DESCRIPTION
The VI 450 is designed for Mig short arc, spray arc and
flux core welding, as well as submerged arc applications.
1.3.1 AVAILABLE MODELS
VI 450 230/460/575, 60 Hz, 3 phase, P/N 33322
VI 450 220/380/415, 50 Hz, 3 phase, P/N 33323
OUTPUT
Flat
Steep
INPUT 3 Phase
Power Factor at Rated Output 83%
Maximum Welding Range 500 A/40 V - 50 A/14 V
Maximum Auxiliary Power 115 V ac @ 10 A, 60 Hz
Current (I2) 500 A 450 A
Voltage (U2) 40 V 38 V
Current (I2) 350 A 300 A
Voltage (U2) 34 V 32 V
Volts (U1) Current (I1) Flat Current (I1) Flat
60 Hz
50 Hz
PHYSICAL SPECIFICATIONS
Height 31.0" (79.0 cm)
Width 21.6" (55.0 cm)
230 V 73 A 66 A
460 V 36 A 33 A
575 V 29 A 26 A
220 V 77 A 69 A
380 V 44 A 40 A
415 V 41 A 37 A
VI 450 Power Source
Depth 33.0" (83.9 cm)
Net Weight 465 lbs (211 kg)
Shipping Weight 487 lbs (221 kg)
5
Page 6
SECTION 1
DESCRIPTION
1.3.2 POWER SOURCE
The power source is a constant potential, Silicon Controlled Rectifier (SCR), three phase, star-connected
transformer/rectifier type dc unit with solid state contactor
and control circuitry. It provides the volt-ampere curve
characteristics desired for Mig and submerged arc
welding.
The power source is equipped with a thermally controlled fan. It helps to minimize the amount of dirt,
spatter and dust deposited in the power source as a
result of a continuously running cooling fan. It consists
of two relays and a thermal switch which allow the fan
to run only when welding and when necessary to
provide cooling to the internal magnetics and components.
NOTE: As shipped, this feature is disabled. To activate
the thermal fan control circuit, remove the left side
panel. Locate relay K4 on the rear left transformer
mounting support. Move the white wire from terminal 1
to terminal 5. When activated, it is normal for the
cabinet sheet metal to be hot to the touch when in the
idle mode (fan not running). When required, the fan will
automatically energize and cool the internal components as well as the cabinet sheet metal.
range remote output control and provides a contactor
closure switch to close the contactor making the output
terminal "hot" at all times for arc gouging. The local/
remote switch on the front panel must be placed in the
remote position when using this accessory.
60
50
40
30
STEEP
20
10
0
100 200
Figure 1-1. Volt-Ampere Curves
300
FLAT
400
500
1.3.3 VOLT-AMPERE CHARACTERISTICS
The curves shown in Figure 1-1 represent the voltampere static characteristics for the power source.
The slant of these curves is referred to as the 'slope' and
is generally defined as the 'voltage drop per 100 amperes of current use.' These curves show the output
voltage available at any given output current for the
minimum and maximum settings of the voltage control.
Values for other settings will fall between the minimum
and maximum curves. Because the volt-ampere slope
is fixed, it is possible to select welding conditions by
estimating the open-circuit voltage required for the load
current. The static voltage-ampere slope is not affected
by the inductor rheostat setting.
1.4 OPTIONAL ACCESSORIES
1.4.1 HC-3B REMOTE VOLTAGE AND
CONTACTOR HAND PENDANT
CONTROL (P/N 33838)
This accessory operates in parallel with the power
source's voltage control potentiometer to provide full
1.4.2 TR-22 TRUCK KIT, P/N 33650
This accessory provides for complete mobility of the
power source. The kit consists of front castors, rear two
cylinder rack and wheels, gas cylinder bracket, and
handle.
1.5 SAFETY
Before the equipment is put into operation, the safety
section at the front of this manual should be read
completely. This will help avoid possible injury due to
misuse or improper welding applications. The definitions relating to the DANGER, WARNING, and CAUTION safety notations are described at the end of the
Safety Section in the front of this manual — read them
and their specific text references carefully.
VI 450 Power Source
6
Page 7
SECTION 2
INSTALLATION
2.1 LOCATION
A proper installation site is necessary for the unit to
provide dependable service. This means the power
source should be placed in a way that provides freedom
of air movement through the unit while minimizing
exposure to dust, dirt, moisture, and corrosive vapors.
A minimum of 18 inches (46 cm) is required between
the side and rear panels of the power source and the
nearest obstruction.
The selected site should also allow easy removal of the
power source outer enclosure for maintenance. See
Figure 2-1 for overall dimensions of the unit.
LIFT EYE
2.88"
V
A
VOLTAGE
PRESET
(CONTACTOR ON)
VI-450
21.63"
VOLTAGE
4
5
3
6
INDUCTANCE
2
LOCAL
7
1
4
5
3
REMOTE
6
8
MIN
2
9
7
1
MAX
MIN
8
9
MAX
ON
OFF
SLOPE
300A MAX
INDUCTANCE
33.0"
33.82"
C. Check air passages at front and rear of cabi-
net, making sure that no packing materials that
may obstruct air flow through the power source.
D. After selecting an installation site (see para-
graph 2.1), place the power source in the
desired location. The unit may be lifted either
by using the lifting ring or by forklift truck. If a
forklift is used for lifting the unit, be sure that the
lift forks are long enough to extend completely
under the base.
Do not use filters on this unit as they would restrict
the volume of intake air. Output ratings on this unit
are based on an unobstructed supply of cooling air
drawn over its internal components. Warranty is
void if any type of filtering device is used.
2.3 PRIMARY (INPUT) ELECTRICAL
CONNECTION
This power source is a three-phase unit and must be
connected to a three-phase power supply. It is recommended that the unit be operated on a dedicated circuit
to prevent impairment of performance due to an overloaded circuit.
Figure 2-1. Dimensions
2.2 RECEIVING, UNPACKING AND
PLACEMENT
A. Immediately upon receipt of the power source,
inspect for damage which may have occurred
in transit. Notify the carrier of any defects or
damage.
B. Remove the power source from the container.
Remove all packing materials. Check the
container for any loose parts.
VI 450 Power Source
ELECTRIC SHOCK CAN KILL! Before making electrical input connections to the power source, "Machinery Lockout Procedures" should be employed.
If the connections are to be made from a line
disconnect switch, place the switch in the off position and padlock it to prevent inadvertent tripping
. If the connection is made from a fusebox, remove
the corresponding fuses and padlock the box cover.
If it is not possible to use padlocks, attach a red tag
to the line disconnect switch (or fuse box) warning
others that the circuit is being worked on.
A. The primary power leads should be insulated
copper conductors. Three power leads and
one ground wire are required. Either rubber
covered cable or conduit (flexible or solid) may
7
Page 8
SECTION 2
INSTALLATION
be used. Table 2-1 provides recommended
input conductors and line fuse sizes.
B. Open the access door on the right side of the
machine. Identify primary power input connections on the input terminal board, customer
ground connection to chassis ground lug, and
primary voltage-changeover terminal board.
Refer to Figures 2-2 and 2-3.
Table 2-1. Recommended Sizes for Input
Conductors and Line Fuses
Rated Input Input &
Fuse Size
Amps
Volts Amps
GND
Conductor
CU/AWG
230
460
575
*Sized per National Code for 80 °C rated copper conductors @ 30
°C ambient. Not more than three conductors in raceway or cable.
Local codes should be followed if they specify sizes other than those
listed above.
66
33
26
No. 4
No. 8
No. 10
100
50
50
C. Thread the input and ground cable(s) through
the large strain-relief hole in the rear panel of
the power source. Connect the primary power
leads to terminals L1, L2, and L3 on the input
terminal board. Secure the strain relief on the
input cable. Connect the ground wire to the
terminal lug, which is located directly below the
input terminal board on the chassis base inside
the cabinet.
nal board (Figure 2-2) illustrates the primary
voltage link connections. The voltage links on
this board are factory set for highest voltage
operation and must be reset for the required
service voltage. Figure 2-2 shows the required
connections to reestablish the desired service
voltage. The voltage links are set up by
reconfiguring the copper link bars to the silkscreened voltage designations for the desired
voltage.
2.4 SECONDARY (OUTPUT) WELDING
CONNECTIONS
Before making any connections to the power source
output terminals, make sure that all primary input
power to the machine is off.
230
575
230
460
230
575
575
460
230
575
460
230
460
230
230
230
575
460
230
575
460
230
230
460
575
460
575
230
L1
L2
L3
The chassis must be connected to an approved
electrical ground. Failure to do so may result in
severe electrical shock, causing severe burns or
death.
D. Recheck all connections for proper tightness.
Ensure all connections are correct and wellinsulated.
E. The primary voltage-changeover input termi-
VI 450 Power Source
8
Figure 2-2. Voltage Changeover Input Terminal
Board (230/460/575 V illustrated)
The output terminals are located on the front panel
(Figure 2-3). Four output terminals are provided. The
two NEGATIVE (-) (high inductance and low inductance) terminals are located at the bottom right-hand
corner and the two POSITIVE (+) (steep slope and flat
slope) terminals are located at the bottom left corner.
The output cable connections will depend on the materials to be welded and on the welding process desired.
Table 2-2 provides the recommended cable output
sizes.
2.5 POWER SOURCE/WIRE FEEDER/
Page 9
SECTION 2
CONTROL INTERCONNECTIONS
Refer to Figure 2-3.
2.5.1 WIRE FEEDER CONTROL
Wire feeder control connections are provided by a 19pin amphenol connector (J1) located on the rear panel
of the power source in the upper right-hand corner.
2.5.2 REMOTE VOLTAGE AND
CONTACTOR CONTROL
This function is provided by a 14-pin amphenol connector (J2) located on the rear panel directly below connector J1. It receives a mating plug from a Hand Control
Assembly (optional). This receptacle is operative only
if the Local/Remote switch on the power source front
panel is in the "Remote" position.
2.5.3 AUXILIARY 115 V AC RECEPTACLE
INSTALLATION
Ten amperes of 115 V ac power can be supplied to
external accessories by connecting them to receptacle
J3 on the rear panel directly above the fuses.
Table 2-2. Secondary Cable Sizes
Weldin
Current
10064321/0
150 4 3 1 1/0 2/0
200 3 1 1/0 2/0 3/0
250 2 1/0 2/0 3/0 4/0
300 1 2/0 3/0 4/0 4/0
400 2/0 3/0 4/0 4/0 2-2/0
500 3/0 3/0 4/0 2-2/0 2-3/0
50 100 150 200 250
Total Length (Feet) of
Cable in Weld Circuit*
*Total cable length includes work and electrode cables. Cable size
is based on direct current, insulated copper conductors, 100percent duty cycle and a voltage drop of 4 or less volts. The welding
cable insulator must have a voltage rating that is high enough to
withstand the open circuit voltage of the machine.
VI 450 Power Source
9
Page 10
SECTION 2
INSTALLATION
VI 450 Power Source
10
Figure 2-3. Interconnection Diagram
Page 11
SECTION 3
Never, under any circumstances, operate the power
source with the cover removed. In addition to the
safety hazards, which are considerable, improper
cooling may cause damage to the components.
Keep side panels closed when unit is energized.
Welding helmet, gloves, and other personal protection should always be worn when welding.
3.1 CONTROLS (See Figure 3-1)
OPERATION
3.1.2 VOLTAGE PRESET/CONTACTOR
CONTROL SWITCH
The Voltage Preset switch is located on the front panel
of the power source. In the Preset (on) position, the
solid state contactor is energized from the power
source. In the Remote (maintained) position, the solid
state contactor is energized from a remote location,
such as a wire feeder. The "on" position thus allows
presetting an approximate welding condition without
actually striking an arc. The "maintained" position
allows the solid state contactor and the constant voltage output to be controlled from a remote Mig wire
feeder or mechanized sub arc control.
3.1.1 POWER SWITCH (ON-OFF)
The power switch is located on the front panel of the
power source. In the "off" position, the unit is essentially shut down. With the switch in the "off" position,
power is still present at the main contactor and at the
switch itself. To fully shut down the power source,
power must be disconnected at the line disconnect
switch or the fuse box, depending upon the installation.
With the switch in the "on" position, 115 V ac power is
provided to energize the main contactor coil, closing
the main contactor which provides input power to the
main transformer and the low voltage control circuitry.
3.1.5
3.1.4
3.1.7
V
A
VOLTAGE
PRESET
(CONTACTOR ON)
LOCAL
REMOTE
VI-450
3.1.2
3.1.3 LOCAL/REMOTE SWITCH
With this switch in the Local position, output is controlled by setting the voltage potentiometer on the front
panel to the output desired. In the Remote position,
output is controlled using the optional Remote Voltage
Control Assembly via connector J2.
3.1.4 VOLTAGE CONTROL
This control allows the operator to regulate the required
amount of welding voltage. Placing the Local/Remote
switch in the Remote position disables the voltage
control.
VOLTAGE
4
5
3
6
INDUCTANCE
2
7
1
4
5
3
6
8
MIN
2
9
7
1
MAX
MIN
8
9
MAX
ON
OFF
VI 450 Power Source
3.1.6
3.1.3
SLOPE
300A MAX
INDUCTANCE
3.1.1
Figure 3-1. Control Locations
11
Page 12
SECTION 3
OPERATION
3.1.5 INDUCTANCE CONTROL
This control allows the desired amount of inductance to
be set and regulated during short arc welding operations. Variable control allows the operator to fine tune
the inductance needed to make the weld puddle more
fluid and to minimize weld spatter.
3.1.6 OVER TEMPERATURE INDICATOR
This indicator will light when an internal overheating
condition has occurred and one of the thermal switches
has opened, causing the power source to shut down to
protect critical components.
3.1.7 VOLTMETER AND AMMETER
A voltmeter (0-60V) and ammeter (0-800A) provide an
accurate indication of dc open circuit and welding
voltage, and welding current.
3.2 SEQUENCE OF OPERATION
Prior to performing the steps below, open the wall
disconnect switch or remove fuse from fuse box to
electrically isolate the power source.
3.2.2 SPECIFIC PROCEDURES FOR
MIG AND SUB ARC
A. Set the local/remote switch to the desired
setting.
B. Set the on-off switch to the "on" position.
C. To preset the approximate welding voltage,
place the contactor switch to the "closed" (on)
position. This action will energize the power
source on output terminals, allowing the desired voltage condition to be preset using the
Voltage Control potentiometer and observing
the voltmeter.
D. After setting the desired voltage condition,
release the Voltage Preset switch. This mode
requires a remote start control activation in
order to start the welding sequence.
E. Set the variable inductance control to the
desired amount of inductance. Lower inductance settings may be required in order to
obtain better arc starts. The established arc
and puddle characteristics can then be fine
tuned under load.
3.2.1 GENERAL PROCEDURES FOR
MIG AND SUB ARC
A. Make the secondary output connections to the
positive and negative output terminals.
B. Make the control connections. Refer to the
appropriate wire feeder, mechanized control,
and/or torch instruction booklets for additional
process requirements or control connections.
C. If primary power connections have been made
to the main contactor, and the voltage
changeover terminal board and control transformer jumpers properly match the incoming
voltage, close the main wall disconnect switch
or reinstall fuses in the fuse box.
F. Commence welding. Observe the voltmeter,
ammeter, and the weld. Readjust the voltage,
inductance, and wire feed speed settings as
necessary to obtain a satisfactory weld.
G. When welding is completed, release torch
switch at the remote location. (This action will
deenergize the power source solid state
contactor and remove dc power from the output terminals.)
If the welding operation terminates prematurely, check
the front panel overheat light. If the light is on, internal
overtemperature conditions have caused the thermal
switches to open, deenergizing the solid state contactor.
When the unit has sufficiently cooled, these switches
will reset, the overheat light will go out, and welding
may resume.
VI 450 Power Source
12
Page 13
SECTION 4
MAINTENANCE
4.1 GENERAL
If this Power Source does not operate properly, stop
work immediately and investigate the cause of the
malfunction. Maintenance work must be performed by
an experienced person, and electrical work by a trained
electrician. Do not permit untrained persons to inspect,
clean, or repair this Power Source. Use only recommended replacement parts.
BE SURE THAT THE BRANCH CIRCUIT OR MAIN
DISCONNECT SWITCH IS OFF, OR ELECTRICAL
INPUT FUSES ARE REMOVED, BEFORE ATTEMPTING ANY INSPECTION OR WORK INSIDE THE
POWER SOURCE. PLACING THE POWER SWITCH
IN THE OFF POSITION DOES NOT REMOVE ALL
POWER FROM INSIDE THE POWER SOURCE.
4.2 CLEANING
Periodically, remove the cover from the Power Source
and blow accumulated dust and dirt from the air passages and interior components by using clean low
pressure air. The frequency of cleaning required depends upon the environment in which the Power Source
is used.
It is imperative that all air passages be kept as clean as
possible in order to allow adequate air flow to provide
proper cooling.
4.3 INSPECTION AND SERVICE
Regularly, check cylinder valves, regulators, hoses,
and gas connections for leaks using a soap solution or
a leak test solution.
Keep the Power Source dry, free of oil and grease, and
protected at all times from damage by hot metal and
sparks.
4.3.1 FAN MOTOR
Keep the fan motor free of accumulated dust and lint by
using low pressure air. Lubricate the motor every 3
months with a few drops of SAE-20 non-detergent oil.
4.3.2 TRANSFORMER
Other than periodically cleaning the dust and dirt from
the transformer as described above, no maintenance is
required. Ensure that only clean, dry, low pressure air
is used.
4.3.3 WIRE FEEDER AND CONTROL
CIRCUITS
These circuits are protected by two 10 amp fuses
mounted in the rear panel fuse holder (CB1, 2). If these
fuses fail, the contactor, shielding gas, and wire feeder
will not operate.
After cleaning with low pressure air, check for and
tighten any loose hardware, including all electrical
connections. Check for frayed and/or cracked insulation on all power cables and replace if necessary.
FAILURE TO REPLACE WORN OR DAMAGED
CABLES MAY RESULT IN A BARE CABLE TOUCHING A GROUND SURFACE. THE RESULTING ELECTRICAL ARC MAY DAMAGE UNPROTECTED EYES
AND WILL PRESENT A SERIOUS FIRE HAZARD.
BODY CONTACT WITH A BARE CABLE, CONNECTOR, OR CONDUCTOR MAY RESULT IN SEVERE
ELECTRICAL SHOCK, CAUSING SERIOUS BURNS
OR DEATH.
VI 450 Power Source
When replacing a fuse in the welding Power Source,
ensure that the proper size fuse is used as a
replacement.
4.3.4 OVER TEMPERATURE
PROTECTION
If the Power Source reaches an abnormally high internal temperature, the Thermal Fan Kit relay will
deenergize, shutting down the Power Source but leaving the cooling fan on. After the Power Source has
cooled to a safe level, this relay will be energized and
normal operation will be restored. While deenerigized,
the contactor, shielding gas, and wire feeder cannot be
operated.
13
Page 14
SECTION 5
5.1 GENERAL
DISCONNECT PRIMARY POWER AT WALL
SWITCH, OR CIRCUIT BREAKER, BEFORE ATTEMPTING INSPECTION OR WORK INSIDE THE
POWER SOURCE.
If the Power Source is operating improperly, the following troubleshooting information may be used to locate
the source of the trouble.
Check the problem against the symptoms in the following troubleshooting guide (Table 5-2.) The remedy for
the problem may be quite simple. If the cause cannot
be quickly located, open up the unit and perform a
simple visual inspection of all the components and
wiring. Check for proper terminal connections, loose or
burned wiring or components, blown fuses, bulged or
leaking capacitors, or any other sign of damage or
discoloration.
TROUBLESHOOTING
5. Reverse leads and check each SCR. All
readings should again show high resistance.
The SCRs are bad if they show low resistance
in either direction.
6. Check the gate circuit on the SCRs by jumpering
the gate lead to the anode of the SCR. The
meter should read less than 5 ohms. Remove
the jumper from the gate. The meter reading
should increase (30-50 ohms).
When replacing diodes on SCRs, make sure mounting surfaces are clean. Coat mounting surfaces
with Alcoa No. 2 EJC Electrical Joint Compound.
Use a torque wrench to tighten diodes and SCRs.
Recommended torques are 20-30 in-lbs for diodes;
125-150 in-lbs for SCRs.
5.2 TESTING AND REPLACING BRIDGE
ASSEMBLY COMPONENTS
The silicon diodes and SCRs used in the Power Source
are devices which allow current to flow in only one
direction. The diodes and SCRs are designed to
provide long trouble-free operation; however, should a
failure occur, they may require replacement.
A. Testing SCRs.
1. Locate the main rectifier assembly containing
the silicon diodes and SCRs.
2. Remove top and right side panel from the
Power Source.
3. Electrically isolate main bridge assembly by
disconnecting the capacitor bank and resistor
R5.
4. With the ohmmeter on RX1 scale, place the
positive lead on the anode (end of SCR with
screw threads) and the negative lead on the
cathode (positive output terminal on the front
panel). The meter should read 30-50 ohms
(high resistance).
VI 450 Power Source
14
Page 15
SECTION 5
Table 5-1. PCB Voltage Tests*
NOTE
All voltage readings are taken with the front access
panel open.
ELECTRICAL SERVICE AND REPAIR SHOULD BE
ATTEMPTED ONLY BY A TRAINED ELECTRICIAN.
SCR VOLTAGES (INPUT)
FROM TO READING
P1-8 P1-9 115 V ac
P2-8 (SCR1)
P2-7 (SCR2)
P2-3 (SCR3)
P2-6 (SCR4)
P2-1 (SCR5)
P2-4 (SCR6)
OTB+ (Flat) 14 V ac
TROUBLESHOOTING
SCR VOLTAGES (OUTPUT)
FROM TO READING
P1-11 OTB+ (Flat) +10 V dc
P1-4 OTB+ (Flat) 0-10 V dc**
P2-5 (SCR1)
P2-2 (SCR2)
P2-12 (SCR3)
P2-9 (SCR4)
P2-10 (SCR5)
P2-11 (SCR6)
OTB+ (Flat) .3 V dc with
contactor on
*Refer to Schematic Diagram
**Varies with VCP (R1)
VI 450 Power Source
15
Page 16
SECTION 5
CONDITION ACTION
TROUBLESHOOTING
Table 5-2. Troubleshooting Guide
Unit inoperative A.
B.
C.
D.
E.
F.
No Output -- Fan
Running
Limited Output or Low
Open-Circuit Voltage
A.
B.
C.
D.
E.
A.
B.
C.
D.
No input power. Check main line (user's) switch fuses -- replace if needed.
Poor or improper input (terminal board) connections.
Defective ROS switch on front panel -- replace.
Main transformer overheating. Also check for proper cooling, proper primary
hookup, or shorted turn on secondary.
Fan motor not operating -- check motor and leads. Remember, this is normal when
Thermal Fan Kit is used.
Main contactor defective -- check for proper operation.
Poor or improper electrical input -- check input connections on TB.
Poor connections at output terminals/work station -- check, tighten or replace.
Main transformer overheating -- thermal switches tripped due to restricted cooling
air. Let unit cool down.
Solid-state breaker tripped due to current overload.
PC board defective or loose PC board connector(s) -- if loose, reinsert; if defective,
replace.
Input voltage jumper links on terminal board improperly set -- check for proper
voltage.
Poor output connections. Take apart, clean, and reassemble.
Unit may be single-phasing -- check incoming power for three phases.
Panel-Remote switch in Remote position and remote voltage pot disabled.
Erratic Weld Current A.
High Output, No
Voltage Control
No 115 Volt ac Output A.B.Check secondary of control winding on main transformer for 115 V ac.
Line Fuse Blows When
Power Source is First
Turned On
Wire Sparks and
Sticks to Workpiece at
End of Weld
Welding cable size too small -- use correct cables.
B.
Loose welding cable connection (will usually get hot) -- tighten all connections.
C.
Improper wire feeder setup.
D.
Defective SCR in bridge rectifier.
E.
PC board defective -- replace.
F.
Unit may be single phasing -- check the incoming power for three phases.
PC board defective or loose -- reset and/or replace board.
Circuit breaker tripped -- reset.
A.B.Shorted SCR in Main Bridge -- replace.
Shorted capacitor in Capacitor Bank.
A.B.Allow 2 to 4 seconds for capacitor banks to discharge after completing the weld and
before touching wire to workpiece.
If doubling the discharge rate is desired (twice as fast) and you are not using the
Thermal Fan Kit (generate excessive heat), change R1 (16 ohm, 300 watt) resistor
to 8 ohm, 300 watt resistor (P/N 17300008). To quadruple the discharge rate (four
times as fast), two 8 ohm resistors may be connected in parallel in place of R1.
VI 450 Power Source
16
Page 17
SECTION 5
TROUBLESHOOTING
Figure 5-1. VI 450 Power Source Schematic Diagram - 60 Hz (Sheet 1 of 2)
VI 450 Power Source
17
Page 18
SECTION 5
TROUBLESHOOTING
Figure 5-1. VI 450 Power Source Schematic Diagram - 60 Hz (Sheet 2 of 2)
VI 450 Power Source
18
Page 19
SECTION 5
TROUBLESHOOTING
Figure 5-2. VI 450 Power Source Wiring Diagram - 60 Hz (Sheet 1 of 4)
VI 450 Power Source
19
Page 20
SECTION 5
TROUBLESHOOTING
Figure 5-2. VI 450 Power Source Wiring Diagram - 60 Hz (Sheet 2 of 4)
VI 450 Power Source
20
Page 21
SECTION 5
TROUBLESHOOTING
Figure 5-2. VI 450 Power Source Wiring Diagram - 60 Hz (Sheet 3 of 4)
VI 450 Power Source
21
Page 22
SECTION 5
TROUBLESHOOTING
Figure 5-2. VI 450 Power Source Wiring Diagram - 60 Hz (Sheet 4 of 4)
VI 450 Power Source
22
Page 23
SECTION 5
TROUBLESHOOTING
Figure 5-3. VI 450 Power Source Schematic Diagram - 50 Hz (Sheet 1 of 2)
VI 450 Power Source
23
Page 24
SECTION 5
TROUBLESHOOTING
Figure 5-3. VI 450 Power Source Schematic Diagram - 50 Hz (Sheet 2 of 2)
VI 450 Power Source
24
Page 25
SECTION 5
TROUBLESHOOTING
Figure 5-4. VI 450 Power Source Wiring Diagram - 50 Hz (Sheet 1 of 4)
VI 450 Power Source
25
Page 26
SECTION 5
TROUBLESHOOTING
Figure 5-4. VI 450 Power Source Wiring Diagram - 50 Hz (Sheet 2 of 4)
VI 450 Power Source
26
Page 27
SECTION 5
TROUBLESHOOTING
Figure 5-4. VI 450 Power Source Wiring Diagram - 50 Hz (Sheet 3 of 4)
VI 450 Power Source
27
Page 28
SECTION 5
TROUBLESHOOTING
Figure 5-4. VI 450 Power Source Wiring Diagram - 50 Hz (Sheet 4 of 4)
VI 450 Power Source
28
Page 29
SECTION 6
REPLACEMENT PARTS
6.1 GENERAL
Replacement Parts are illustrated on the following figures. When ordering replacement parts, order by part
number and part name, as illustrated on the figure. DO
NOT ORDER BY PART NUMBER ALONE.
Always provide the series or serial number of the unit on
which the parts will be used. The serial number is
stamped on the unit nameplate.
6.2 ORDERING
To assure proper operation, it is recommended that
only genuine ESAB parts and products be used with this
equipment. The use of non-ESAB parts may void your
warranty.
Replacement parts may be ordered from your ESAB
distributor or from:
ESAB Welding & Cutting Products
Attn: Customer Service Dept.
PO Box 100545, Ebenezer Road
Florence, SC, 29501-0545
Be sure to indicate any special shipping instructions
when ordering replacement parts.
To order parts by phone, contact ESAB at 1-803-6645540 or 4460. Orders may also be faxed to 1-800-634-
7548. Be sure to indicate any special shipping instructions when ordering replacement parts.
Refer to the Communication Guide located on the last
page of this manual for a list of customer service phone
numbers.
VI 450 Power Source
29
Page 30
SECTION 6
REPLACEMENT PARTS
8,12
9,13
7
6
V
A
VOLTAGE
5
PRESET
VI-450
4
(CONTACTOR ON)
VOLTAGE
4
5
3
6
INDUCTANCE
2
LOCAL
7
1
4
5
3
REMOTE
6
8
MIN
2
9
7
1
MAX
MIN
8
9
MAX
ON
OFF
1
3
SLOPE
300A MAX
INDUCTANCE
2
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
10,11
QTY
REQ.
1
1
1
1
1
1
1
1
1
4
2
1
1
PART
NO.
13735182
672508
634515
2134926
634516
951278
951280
639541
672507
13733935
13792513
2062201
2062171
Figure 6-1. VI 450 (Front View)
DESCRIPTION
LIGHT, INDICATOR
SWITCH, 3-POS.
SWITCH, TOGGLE, SPDT
LIGHT, INDICATOR
SWITCH, TOGGLE, SPDT
VOLTMETER, DC, 60 V
AMMETER, DC, 600 A
POTENTIOMETER, 15 K
RHEOSTAT, 300 W, 12 OHM
RECEPTACLE, CABLE
CONNECTOR, QUICK (SUPPLIED)
KNOB
KNOB
CIRCUIT
DESIG.
PL1
S1
S3
PL2
S2
VM
AM
R1
R2
VI 450 Power Source
30
Page 31
SECTION 6
3
REPLACEMENT PARTS
1
2
4
Figure 6-2. VI 450 Control Access Panel (Open)
ITEM
NO.
1
2
3
4
* K3 relay was added starting with Ser. No. D94E48975 (5/94) for improved main transformer protection.
QTY
REQ.
1
1
1
1
PART
NO.
13735102
635686
675312
950417
DESCRIPTION
RELAY, 3PDT, 42 V
BLOCK, TERMINAL, 8-POINT
PC BOARD ASSY
RELAY, DPDT, 24 V
VI 450 Power Source
CIRCUIT
DESIG.
K2
TB5
PCB1
K3*
31
Page 32
SECTION 6
REPLACEMENT PARTS
10
11
1,2
3
9
8
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
QTY
REQ.
1
1
1
1
1
1
1
1
1
1
2
7
6
Figure 6-3. VI 450 (Left Side View)
PART
NO.
33332
33217
673502
33769
33216
635686
33486
33141
33162
672330
673676
2062334
13735308
TRANSFORMER, CONTROL (60 HZ)
TRANSFORMER, CONTROL (50 HZ)
CONTACTOR, 75 A
SHUNT
INDUCTOR ASSY
BLOCK, TERMINAL, 8-POINT
TRANSFORMER ASSY, MAIN (60 HZ)
TRANSFORMER ASSY, MAIN (50 HZ)
RESISTOR ASSY, SLOPE
SPIDER, FAN
BLADE, FAN
MOTOR, FAN
RELAY, DPDT, 120 V AC
5
DESCRIPTION
4
CIRCUIT
DESIG.
T2
K1
SH
L1
TB4
T1
R4
M1
K4,5
VI 450 Power Source
32
Page 33
SECTION 6
REPLACEMENT PARTS
BRIDGE ASSY (REFER
TO FIGURE 6-6)
1
5
ITEM
NO.
1
2
3
4
5
6
6
QTY
REQ.
1
1
1
1
1
3
4
Figure 6-4. VI 450 (Right Side View)
PART
NO.
951541
33328
33171
951201
17300016
673459
672348
BLOCK, TERMINAL, 20-POINT
BOARD, TERMINAL (60 HZ)
BOARD, TERMINAL (50 HZ)
FUSE, 10 A, 600 V
RESISTOR, 16 OHM, 300 W
CAPACITOR, 9800 uF, 50 V DC
CAPACITOR, .01 uF, 1.0 KV
DESCRIPTION
2
3
CIRCUIT
DESIG.
TB2
TB1
F1,2
R5
C13-22
C10-12
VI 450 Power Source
33
Page 34
SECTION 6
REPLACEMENT PARTS
1
5
2
4
3
Figure 6-5. VI 450 (Rear View)
ITEM
NO.
1
2
3
4
5
QTY
REQ.
VI 450 Power Source
34
PART
NO.
1
1
1
1
1
951539
951540
951540
647298
950122
RECEPTACLE, 19-PIN
RECEPTACLE, 14-PIN
PANEL, REAR, SILKSCREENED
RECEPTACLE, 115 V, DUPLEX
CIRCUIT BREAKER, 10 AMP
DESCRIPTION
CIRCUIT
DESIG.
J1
J2
J3
CB1,2
Page 35
SECTION 6
REPLACEMENT PARTS
1
2
ITEM
NO.
1
2
3
4
QTY
REQ.
6
6
6
3
4
Figure 6-6. Bridge Assembly
PART
NO. DESCRIPTION
672348
13735018
950841
950711
CAPACITOR, .01 uF, 1.0 KV
CORE, TOROID
THYRISTOR, SCR
SWITCH, THERMAL
3
CIRCUIT
DESIG.
C1-6
L2-7
SCR1-6
TS1-3
VI 450 Power Source
35
Page 36
COMMUNICATIONS GUIDE
A. CUSTOMER SERVICE QUESTIONS: Telephone: (803) 664-5540 / FAX: (800) 634-7548
Order Entry Product Availability Pricing Order Changes Hours: 8:30 AM to 5:00 PM EST
B. ENGINEERING SERVICE: Telephone: (803) 664-4416 or -5550 / FAX: (800) 446-5693
Welding Equipment Troubleshooting Warranty Returns Hours: 7:30 AM to 5:00 PM EST
C. TECHNICAL SERVICE: Telephone: (803) 664-5547 / FAX: (803) 664-5575
Part Numbers Technical Applications Hours: 7:30 AM to 5:00 PM EST
Performance Features Technical Specifications
D. LITERATURE REQUESTS: Telephone: (803) 664-5501 / FAX: (803) 664-5575
E. WELDING EQUIPMENT REPAIRS: Telephone: (803) 664-4487 / FAX: (803) 664-5557
Repair Estimates Repair Status Hours: 7:30 AM to 3:30 PM EST
F. WELDING EQUIPMENT TRAINING: Telephone: (803) 664-5524 / FAX: (803) 664-5575
Training School Information and Registrations Hours: 7:30 AM to 4:00 PM EST
G. WELDING PROCESS ASSISTANCE: Telephone: (803) 664-4248 / FAX: (803) 664-4454
H. TECHNICAL ASST. CONSUMABLES: Telephone: (800) 934-9353
IF YOU DO NOT KNOW WHOM TO CALL
Telephone: (803) 664-5540 and (803) 664-4460
Hours: 7:30 AM to 5:00 PM EST
Hours: 7:30 AM to 4:00 PM EST
Hours: 7:30 AM to 4:00 PM EST
Hours: 7:30 AM to 5:00 PM EST
F-15-098-A 2/95 1.5M Printed in U.S.A.
ESAB Welding & Cutting Products
PO Box 100545 Florence SC 295010545
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