Miller KG291379 Owner's manual

Miller
Brand
Miller
Model
KG291379
Category
Welding System
Type
Owner's manual

This manual is also suitable for

Miller
January
1997
Form:
OM-183173B
Effective
With
Serial
No.
KG291
379
OWNERS
MANUAL
/
~w
~
~F'
CE
Ae
rowave
fi
CC
AC/DC
Welding
Power
Source
For
GTAW
And
SMAW
Welding
Rated
Welding
Output
Amperes
Input
at
AC
Balanced
Rated
Load
Output;
50
Hz
KVA
KW
Amperage
Range
Max
OCV
380
V
415
V
Three-Phase:
NEMA
Class
I
(60)
300
Amperes,
32
Volts
AC/DC,
60%
Duty
Cycle
23
21
14.8
14
1375
A
90
Single-Phase:
NEMA
Class
I
(60)200Arnperes28Volts
AC/DC,
60%
Duty
Cycle
61
54
23.1
21.1
1350A
90
cover_om
4/95
ST-800
311-B
'
1997
MILLER
Electric
Mfg.
Co.
PRINTED
IN
USA
LIMITED
WARRANTY
Subject
tothe
terms
and
conditions
below,
MILLER
Electric
Mtg.
Co.,
Appleton,
Wisconsin,
warrants
to
its
original
retail
purchaser
that
new
MILLER
equipment
sold
after
the
effective
date
of
thia
limited
warranty
a
free
of
de
fects
in
material
and
workmanship
at
the
time
tie
shipped
by
MILLER.
This
WAR
RANTY
IS
EXPRESSLY
IN
UEU
OF
ALL
OTHER
WARRANTiES,
EXPRESS
OR
IMPLIED,
INCLUDtNG
THE
WARRAN11ES
OF
MERCHANTABiLiTY
AND
FIT
NESS.
Within the
warranty
periods
listed
below,
MILLER
will
repair
or
replace
any
war
ranted
parts
orcomponenta
thatfail
due
to
such
defects
in
material
orworkmanahip.
MILLER
must
be
notified
in
writing
within
thirty
(30)
days
of
such
defect
or
failure,
at
which
rime
MILLER
will
provide
instructions
on
the
warranty
claim
procedures
to
be
followed.
MILLER
shall
honor
warranty
claims
on
warranted
equipment
listed
below
in
the
event
of
such
a
failure
within
the
warranty
time
periods.
All
warranty
time
periods
start
on
the
date
that
the
equipment
was
delivered
to
the
original
retail
purchaser,
or
one
year
after
the
equipment
is
sent
to
a
North
American
distributor
or
eighteen
months
after
the
equipment
is
sent
to
en
Intemalional
distributor.
1.
5YearsParta3YearaLabor
*
Original
main
power
rectifiers
Inverlers
(input
and
output
rectifiers
only)
2.
3
Years
Parts
and
Labor
*
Transformer/Rectifier
Power
Sources
*
Plasma
Arc
Cutting
Power
Sources
*
Semi-Automatic
and
Automatic
Wire
Feeders
Inverter
Power
Supplies
*
Intellitig
*
Robots
(1
year
labor)
3.
2
Years
Parts
and
Labor
Engine
Driven
Welding
Generators
(NOTE:
Engines
are
warranted
separately
by
the
engine
manufacturer.)
*
Air
Compressors
4.
1
Year
Parts
and
Labor
*
Motor
Driven
Guns
*
Process
Controllers
*
IHPS Power
Sources
Water
Coolant
Systems
HF
Units
*
Grids
Spot
Welders
*
Load
Banks
*
SDX
Transformers
Miller
Cyclomatic
Equipment
*
Running
Gear/Trailers
Plasma
Cutting
Torches
(except
API;
ZIPCUT
&
PLAZCUT
Models)
Tecumseh
Engines
*
Deulz
Engines
(outside
North
America)
*
Field
Options
(NOTE:
Field
options
are
covered
under
True
Bluefi
for
the
remaining
warranty
period
of
the
product
they
are
installed
in,
or
for
a
minimum
of
one
year
whichever
is
greater.)
5.
6
Months
Batteries
6.
90DayaPerteendLebor
*
MIG
Guns/rIG
Torches
API;
ZIPCUT
&
PLAZCUT
Model
Plasma
Cutting
Torches
*
Remote
Controls
*
Accessory
Kits
Replacement
Parts
MILLERS
True
Bluefi
Umited
Warranty
shall
not
apply
to:
1.
items
fumiahed
by
MILLER,
but
manufactured
by
others,
such
as
engines
or
trade
accessories.
These
items
are
covered
by
the
manufacturers
warranty,
if
any.
2.
Consumable
components;
such
as
contact
tips,
cutting
nozzles,
contactors
and
relays
or
parts
that
fail
due
to
normal
wear.
3.
Equipment
that
has
been
modified
by
any
party
other
than
MILLER,
or
equip
ment
that
has
been
improperty
installed,
improperly
operated
or
misused
based
upon
industry
standards,
or
equipment
which
has
not
had
reasonable
and
necessary
maintenance,
or
equipment
which
has
been
used
for
operation
outside
of
the
specifications
for
the
equipment.
MILLER
PRODUCTSARE
INTENDED
FOR
PURCHASE
AND
USE
BY
COMMER
CIALJ1NDUSTRIAL
USERS
AND
PERSONS
TRAINED
AND
EXPERIENCED
IN
THE
USE
AND
MAINTENANCE
OF
WELDING
EQUIPMENT
In
the
event
of
a
warranty
claim
covered
by
this
warranty,
the
exclusive
remedies
shell
be,
at
MILLERS
option:
(1)
repeir;
or
(2)
replacement;
or,
where
authorized
in
writing
by
MILLER
in
appropriate
cases,
(3)
the
reasonable
coat
of
repair
or
replace
ment
at
en
authorized
MILLER
service
station;
or
(4)
payment
ot
orcreditforthe
pur
chase
price
(less
reasonable
depreciation
based
upon
actual
use)
upon
retum
of
the
goods
at
customers
risk
and
expense.
MILLERS
option
of
repair
or
replacement
will
be
FOB.,
Factory
at
Appleton,
Wisconsin,
or
FOB,
ate
MILLER
authoflzed
ser
vice
facility
as
determined
by
MILLER.
Therefore
no
compensation
or
reimburse
ment
for
transportation
costa
of
any
kind
will
be
allowed.
TO
ThE
EXTENT
PERMITFED
BY
LAW,
THE
REMEDIES
PROVIDED
HEREIN
ARE
ThE SOLE
AND
EXCLUSIVE
REMEDIES.
IN
NO
EVENTSHALL
MILLER
BE
UABLE
FOR
DIRECT,
INDIRECt
SPECIAL,
INCIDENTAL
OR
CONSEQUENTIAL
DAMAGES
(INCLUDING
LOSS
OF
PROFIT),
WHETHER
BASED
ON
CON
TRACT,
TORT
OR
ANY
OTHER
LEGAL
ThEORY.
ANY
EXPRESS
WARRANTY
NOT
PROVIDED
HEREIN
ANDANY
IMPLIED
WAR
RANTY,
GUARANTY
OR
REPRESENTA11ON
AS
TO
PERFORMANCE,
AND
ANY
REMEDY
FOR
BREACH OF
CONTRACT
TORT
OR
ANY
OThER
LEGAL
ThEORY
WHICH,
BUT
FOR
ThIS
PROVISION,
MIGHTARISE
BY
IMPUCA11ON,
OPERA11ON
OF
LAW,
CUSTOM
OF
TRADE
OR
COURSE
OF
DEALING,
IN
CLUDING
ANY
IMPLIED
WARRANTY
OP
MERCHANTABILITY
OR
FITNESS
FOR
PARTICULAR
PURPOSE,
WiTh
RESPECTTO
ANY AND
ALL
EQUIPMENT
FURNISHED
BY
MILLER
IS
EXCLUDED
AND
DISCLAIMED
BY
MILLER.
Some
states
in
the
U.S.A.
do
not
allow
limitations
of
how
long
an
implied
warranty
lasts,
or
the
excluvion
of
incidental,
indirect,
special
or
consequential
damages,
so
the
above
limitation
or
exclusion
may
not
apply
to
you.
This
warranty
provides
ape
cific
legal
rights,
and
other
rights
may
be
available,
but
may
vary
from
state
to
state.
In
Canada,
legislation
in
some
provinces
provides
for
certain
additional
warranties
or
remedies
other
then
as
stated
herein,
end
to
the
extent
that
they
may
not
be
waived,
the
limitations
end
exclusions
set
out
above
may
nor
apply.
This
Umited
Warranty
provides
apecific
legel
rights,
end
other
rights
may
be
available,
but
may
very
from
province
to
province.
WHO
DO
I
CONTACT?
For
help,
To
file
a
claim
for
loss
or
damage
during
Miller
Electric
Mfg.
Co.
contact
your
distributor
For
additional
information,
such
as
Technical
Manuals
(Service
And
Parts)
Engine
Manuals
Circuit
And
Wiring
Diagrams
shipment,
U
contact
tho
delivering
carner
For
assistance
in
filing
or
settling
claims,
U
contact
your
distributor
and/or
equipment
manufacturers
Transportation
Department
L~T.]
CALL:
414-735-4505
U
FAX:
800-637-2348
(in
USA),
or
414-735-4136
(outside
USA)
Process
Handbooks
Users
Guides
Distributor
Directories
r
I
WRITE:
Miller
Electric
Mfg.
Co.
contact
your
distributor
RO,
BOX
1079
Appleton,
WI
54912
USA
Always
provide
Model
Name
and
Serial
or
Style
Number
.j.
MILLERS
TRUE
BLUEfi
LIMITED
WARRANTY
Effective
February
7,
1996
(Equipment
with
a
serial
number
preface
of
KD
or
newer)
This
limited
warranty
supersedes
eli
previous
MILLER
warranties
and
is
exclusive
with
no
other
guarantees
or
warranties
expressed
or
implied.
I.
r.
SE
xw.,
miller_wan
3/96
Declaration
of
Conformity
For
European
Community
(CE)
Products
N
OTE
~
This
information
is
provided
for
units
with
CE
certification
(see
rating
label
on
unit.)
Manufacturers
Name:
Miller
Electric
Mfg.
Co.
Manufacturers
Address:
1635
W.
Spencer
Street
Appleton,
WI
54914
USA
Declares
that
the
product:
Aerowave
conforms
to
the
following
Directives
and
Standards:
Directives
Low
Voltage
Directive:
73/23/EEC
Machinery
Directives:
89/392/EEC,
91/368/EEC,
93/C
133/04,
93/68/EEC
Electromagnetic
Capability
Directives:
89/336,
92/31/EEC
Standards
Safety
Requirements
forArc
Welding
Equipment
part
1:
EN
60974-1:
1990
Arc
Welding
Equipment
Part
1:
Welding
Power
Sources:
IEC
974-1
(December
1995
Draft
revision)
Degrees
of
Protection
provided
by
Enclosures
(IP
code):
IEC
529:1989
Insulation
coordination
for
equipment
within
low-voltage
systems:
Part
1:
Principles,
requirements
and
tests:
IEC
664-1:1992
Electromagnetic
compatibility
(EMC)
Product standard
for
arc
welding
equipment:
EN50199:
August
1995
European
Contact:
Mr.
Luigi
Vacchini,
Managing
Director
MILLER
Europe
S.P.A.
Via
Privata
Iseo
20098
San
Giuliano
Milanese,
Italy
Telephone:
39(02)98290-1
Fax:
39(02)98281-552
dec_coni
10/95
TABLE
OF
CONTENTS
SECTION
1
SAFETY
PRECAUTIONS
FOR
ARC
WELDING
1
1-1.
Symbol
Usage
1
1-2.
Arc
Welding
Hazards
1
1-3.
Additional
Installation,
Operation,
And
Maintenance
Hazards
2
1-4.
Principal
Safety
Standards
3
1-5.
EMF
Information
3
SECTION
2
DEFINITIONS
4
2-1.
Warning
Label
Definitions
4
2-2.
Rating
Label
For
CE
Products
5
2-3.
Symbols
And
Definitions
6
SECTION
3
INSTALLATION
7
3-1.
Dimensions
And
Weights
7
3-2.
Selecting
A
Location
7
3-3.
115
VAC
Receptacle,
Circuit
Breaker,
And
Shielding
Gas
Connections
8
3-4.
Weld
Output
Terminals
And
Selecting
Cable
Sizes
8
3-5.
Remote
14
Receptacle
Information
9
3-6.
Electrical
Service
Guide
9
3-7.
Placing
Jumper
Links
10
3-8.
Connecting
Input
Power
11
SECTION
4-OPERATION
12
4-1.
Controls
12
4-2.
Polarity
Switch
And
Pilot
Lights
12
4-3.
Mode
Switch
13
4-4.
Amperage/Preset
Meter
And
Voltmeter
13
4-5.
Output
Switch
And
Pilot
Light
13
4-6.
Amperage
Adjustment
Controls
14
4-7.
Examples
Of Combination
Remote
Amperage
Control
15
4-8.
AC
Balance
Control
16
4-9.
AC
Frequency
Controls
16
4-10.
Posttlow
Time
Control
17
4-11.
Start
Switch
17
4-12.
Power
Switch
17
4-13.
Optional
Controls
18
4-14.
GTAW
Trigger
Hold
Switch
(Optional)
18
4-15.
Spot
Time
Controls
(Optional)
19
4-16.
Preflow
Time
Controls
(Optional)
19
4-17.
Initial
Sequence
Controls
(Optional)
19
4-18.
Pulser
Controls
(Optional)
20
4-19.
Final
Sequence
Controls
(Optional)
20
4-20.
Pulsed
Weld Waveforms
21
4-21.
Duty
Cycle
And
Overheating
22
SECTION
5-
MAINTENANCE
&
TROUBLESHOOTING
22
5-1.
Routine
Maintenance
22
5-2.
Overload
Protection
And
Adjusting
Spark
Gap
23
5-3.
Troubleshooting
24
SECTION
6
ELECTRICAL
DIAGRAM
26
SECTION
7
HIGH
FREQUENCY
(HF)
28
7-1.
Welding
Processes
Using
HF
28
7-2.
Sources
Of
HF
Radiation
From
Incorrect
Installation
28
7-3.
Correct
Installation
29
SECTION
8
PARTS
LIST
30
OM-183
173B
-
1/97
CYLINDERS
can
explode
if
damaged.
Shielding
gas
cylinders
contain
gas
under
high
pressure.
If
damaged,
a
cylinder
can
explode.
Since
gas
cylinders
are
normally
part
of
the
welding
process,
be
sure
to
treat
them
carefully.
1.
Protect
compressed
gas
cylinders
from
excessive
heat,
mechanical
shocks,
slag,
open
flames,
sparks,
and
arcs.
2.
Install
cylinders
in
an
upnght
position
by
securing
to
a
stationary
support
or
cylinder
rack
to
prevent
falling
or
tipping.
3.
Keep
cylinders
away
from
any
welding
or
other
electrical
circuits.
4.
Never
drape
a
welding
torch
over
a
gas
cylinder.
5.
Never
allow
a
welding
electrode
to
touch
any
cylinder.
6.
Never
weld
on
a
pressurized
cylinder
explosion
will
result.
7.
Use
only
correct
shielding
gas
cylinders,
regulators,
hoses,
and
fittings
designed
for
the
specific
application;
maintain
them
and
associated
parts
in
good
condition.
8.
Tum
face
away
from
valve
outlet
when
opening
cylinder
valve.
9.
Keep
protective
cap
in
place
over
valve
except
when
cylinder
is
in
use
or
connected
for
use.
10.
Read
and
follow
instructions
on
compressed
gas
cylinders,
associated
equipment,
and
CGA
publication
P-i
listed
in
Safety
Standards.
WELDING
can cause
fire
or
explosion.
Welding
on
closed
containers,
such
as
tanks,
drums,
or
pipes,
can
cause
them
to
blow
up.
Sparks
can
fly
off
from
the
welding
arc.
The
flying
sparks,
hot
workpiece,
and
hot
equipment
can
cause
fires
and
bums.
Accidental
contact
of
electrode
to
metal
objects
can cause
sparks,
explosion,
overheating,
or
fire.
Check
and
be
sure
the
area
is
safe
before
doing
any
welding.
1.
Protect
yourself
and
others
from
flying
sparks
and
hot
metal.
2.
Do
not
weld
where
flying
sparks
can
strike
flammable
material.
3.
Remove
all
flammables
within
35
ft
(10.7
m)
of
the
welding
arc.
If
this
is
not
possible,
tightly
cover
them
with
approved
covers.
4.
Be
alert
that
welding
sparks
and
hot
materials
from
welding
can
easily
go
through
small
cracks
and
openings
to
adjacent
areas.
5.
Watch
for
fire,
and
keep
a
fire
extinguisher
nearby.
6.
Be
aware
that
welding
on
a
ceiling,
floor,
bulkhead,
or
partition
can
cause
fire
on
the
hidden
side.
7.
Do
not
weld
on
closed
containers
such
as
tanks,
drums,
or
pipes,
unless
they
are
properly
prepared
according
to
AWS
F4.
1
(see
Safety
Standards).
8.
Connect
work
cable
to
the
work
as
close
to
the
welding
area
as
practical
to
prevent
welding
current
from
traveling
long,
possibly
unknown
paths
and
causing
electric
shock
and
fire
hazards.
9.
Do
not
use
welder
to
thaw
frozen
pipes.
10.
Remove
stick
electrode
from
holder
or
cut
off
welding
wire
at
contact
tip
when
not
in
use.
11.
Wear
oil-free
protective
garments
such
as
leather
gloves,
heavy
shirt,
cuffless
trousers,
high
shoes,
and
a
cap.
12.
Remove
any
combustibles,
such
as
a
butane
lighter
or
matches,
from
your
person
before
doing
any
welding.
1-3.
Additional
Installation,
Operation,
And
Maintenance
Hazards
2.
Do
not
install
unit
near
flammables.
FALLING
EQUIPMENT
can
cause
serious
personal
injury
and
damage.
1.
Use
lifting
eye
to
lift
unit
only,
NOT
running
gear,
gas
cylinders,
or
any
other
accessories.
Use
equipment
of
adequate
capacity
to
lift
unit.
If
using
lift
forks
to
move
unit,
be
sure
forks
are
long
enough
to
extend
beyond
opposite
side
of
unit.
HOT
PARTS
can
cause
severe
burns.
1.
Do
not
touch
hot
parts
bare
handed.
2.
Allow
cooling
period
before
working
on
gun
or
torch.
MOVING
PARTS
can
cause
injury.
Keep
away
from
moving
parts
such
as
fans.
Keep
all
doors,
panels,
covers,
and
guards
closed
and
securely
in
place.
MAGNETIC
FIELDS
FROM
HIGH
CURRENTS
can
affect
pacemaker
operation.
1.
Pacemaker
wearers
keep
away.
2.
Wearers
should
consult
their
doctor
before
going
near
arc
welding,
gouging,
or
spot
welding
operations.
MOVING
PARTS
can
cause
injury.
1.
Keep
away
from
moving
parts.
2.
Keep
away
from
pinch
points
such
as
drive
rolls.
FLYING
PIECES
OF
METAL
or
DIRT
can
injure
eyes.
1.
Wear
safety
glasses
with
side
shields
or
face
shield.
WELDING
WIRE
can
cause
puncture
wounds.
1.
Do
not
press
gun
trigger
until
instructed
to
do
so.
2.
Do
not
point
gun
toward
any
part
of
the
body,
other
people,
or
any
metal
when
threading
welding
wire.
HIGH-FREQUENCY
RADIATION
can
interfere
with
radio
navigation,
safety
services,
computers,
and
communications
equipment.
1.
Have
only
qualified
persons
familiar
with
electronic
equipment
perform
this
installation.
2.
The
user
is
responsible
for
having
a
qualified
electrician
promptly
correct
any
interference
problem
resulting
from
the
installation.
3.
If
notified
by
the
FCC
about
interference,
stop
using
the
equipment
at
once.
4.
Have
the
installation
regularly
checked
and
maintained.
5.
Keep
high-frequency
source
doors
and
panels
tightly
shut,
keep
spark
gaps
at
correct
setting,
and
use
grounding
and
shielding
to
minimize
the
possibility
of
interference.
FIRE
OR
EXPLOSION
can
result
from
placing
unit
on,
over,
or
near
combustible
surfaces.
1.
Do
not
locate
unit
on,
over,
or
near
surfaces.
OM-183
173
Page
2
OVERUSE
can
cause
OVERHEATED
EQUIPMENT.
1.
Allow
cooling
period.
2.
Reduce
current
or
reduce
duty
cycle
before
starting
to
weld
again.
3.
Follow
rated
duty
cycle.
STATIC
ELECTRICITY
can
damage
parts
on
circuit
boards.
1.
Put
on
grounded
wrist
strap
BEFORE
handling
boards
or
parts.
2.
Use
proper
static-proof
bags
and
boxes
to
store,
move,
or
ship
PC
boards.
SIGNIFICANT
DC
VOLTAGE
exists
after
removal
of
input
power
on
inverters.
1.
Turn
Oft
inverter,
disconnect
input
power,
and
discharge
input
capacitors
according
to
instructions
in
Maintenance
Section
before
touching
any
parts.
1-4.
Principal
Safety
Standards
Cj
BUILDUP
OF
SHIELDING
GAS
can
harm
health
or
kill.
1.
Shut
off
shielding
gas
supply
when
not
in
use.
Safety
in
Welding
and
Cutting,
ANSI
Standard
Z49.1,
from
American
Welding
Society,
550
NW.
LeJeune
Rd,
Miami
FL
33126
Safety
and
Health
Standards,
OSHA
29
CFR
1910,
from
Superintendent
of
Documents,
U.S.
Government
Printing
Office,
Washington,
D.C.
20402.
Recommended
Safe
Practices
for
the
Preparation
for
Welding
and
Cutting
of
Containers
That
Have
Held
Hazardous
Substances,
American
Welding
Society
Standard
AWS
F4.1,
from
American
Welding
Society,
550
N.W.
LeJeune
Rd,
Miami,
FL
33126
Nationa
Electrical
Code,
NFPA
Standard
70,
from
National
Fire
Protection
Association,
Batterymarch
Park,
Quincy,
MA
02269.
1-5.
EMF
Information
Safe
Handling
of
Compressed
Gases
in
Cylinders,
CGA
Pamphlet
P-i,
from
Compressed
Gas
Association,
1235
Jefferson
Davis
Highway,
Suite
501,
Ariington,
VA
22202.
Code
for
Safety
in
Welding
and
Cutting,
CSA
Standard
W117.2,
from
Canadian
Standards
Association,
Standards
Sales,
178
Rexdale
Boulevard,
Rexdale,
Ontario,
Canada
M9W
1
R3.
Safe
Practices
For
Occupation
And
Educational
Eye
And
Face
Protection,
ANSI
Standard
Z87.1,
from
American
National
Standards
Institute,
1430
Broadway,
New
York,
NY
10018.
Cutting
And
Welding
Processes,
NFPA
Standard
51B,
from
National
Fire
Protection
Association,
Batterymarch
Park,
Quincy,
MA
02269.
Considerations
About
Welding
And
The
Effects
Of
Low
Frequency
Electric
And
Magnetic
Fields
The
following
is
a
quotation
from
the
General
Conclusions
Section
of
the
U.S.
Congress,
Office
of
Technology
Assessment,
Biological
Effects
of
Power
Frequency
Electric
&
Magnetic
Fields
Background
Pape,
OTA-BP-E-53
(Washington,
DC:
U.S.
Government
Printing
Office,
May
1989):
..
.
there
is
now
a
very
large
volume
of
scientific
findings
based
on
experiments
at
the
cellularlevel
and
from
studies
with
animals
and
people
which
clearly
establish
that
low
frequency
magnetic
fields
can
interact
with,
and
produce
changes
in,
biological
systems.
While
most
of
this
work
is
of
very
high
quality,
the
results
are
complex.
Current
scientific
understanding
does
not
yet
allow
us
to
interpret
the
evidence
in
a
single
coherent
framework.
Even
more
frustrating,
it
does
not
yet
allow
us
to
draw
definite
conclusions
about
questions
of
possible
risk
or
to
ofter
clear
science-based
advice
on
strategies
to
minimize
or
avoid
potential
risks.
To
reduce
magnetic
fields
in
the
workplace,
use
the
following
procedures:
1.
Keep
cables
close
together
by
twisting
or
taping
them.
2.
Arrange
cables
to
one
side
and
away
from
the
operator.
3.
Do
not
coil
or
drape
cables
around
the
body.
4.
Keep
welding
power
source
and
cables
as
far
away
as
practical.
5.
Connect
work
clamp
to
workpiece
as
close
to
the
weld
as
possible.
About
Pacemakers:
The
above
procedures
are
also
recommended
for
pacemaker
wearers.
Consult
your
doctor
for
complete
information.
aM-i
83 173
Page
3
2-2.
Rating
Label
For
CE
Products
1N1OV
375A/25V
40%
60%
100%
375A
300A
I
235A
U0
=
90V
19.4V
1
AJ2OV
375A/35V
40%
60%
100%
375A
300A
235A
29.4V
1A/1OV
350A/24V
20%
60%
100%
350A
200A
1
55A
U0
=
90V
16.2V
1
A/20V
350A/34V
20%
60%
100%
350A
200A
1
55A
26.2V
Uo
=
90V
EN
60974-1
U0
=
90V
1leff
14.6A
U2
415V
4.0
Kvar
limax
21A
1iefl
13.4A
U1
380V
limax
61A
l~
27A
1~
50Hz
U2
415V
imax
54A
leff
24A
OM-183
173
Page
5
2-3.
Symbols
And
Definitions
A
Amperes
PanelLocal
~:$
Gas
Tungsten
Arc
Welding
(GTAW)
.
-~
Shielded
Metal
Arc
Welding
(SMAW)
~J
Volts
f
Frequency
V
Itfi
Over
Voltage
....t
Spot
Timer
c?u
Output
o
Circuit
Breaker
Remote
Touch
Start
(GTAW)
Protective
Earth
(Ground)
Alternating
Current
High
Frequency
-
Start
Input
t2
Postflow
Timer
ti
Preflow
Timer
Q
Kvar
Fl
High
Frequency
S
Seconds
Gas
Input
Gas
Output
Gas
(Supply)
On
Q
Oft
Thickness
Gauge
Direct
Current
Balance
Control
Q
~
Maximum
Cleaning
-,-
Maximum
Penetration
+
A
~
S
..
Electrode
Positive
/\~

Electrode
Negative
Work
.4P~\
Electrode
3\,
Three-Phase
1J
Pulse
Frequency
%
J~]j~
Pulse
Percent
On
Time
J1~L~
Pulse
Background
Amperage
Fl
z
He~
~/\
Start
Time
~/\
Start
Amperage
Final
Slope
O,~
Percent
U
o
Rated
No
Load
Voltage
(Average)
U
1
Pnmary
Voltage
U2
Conventional
Load
Voltage
~J
~
Line
Connection
Primary
Current
12
Rated
Welding
Current
X
Duty
Cycle
~GD-{~
Three-Phase
Combined
AC/DC
Power
Source
I
P
Degree
Of
Protection
1
eff
Maximum
Effective
Supply
Current
1
max
Rated
Maximum
Supply
Current
U1IJI1
~
Spark
Gap
()
Increase/Decrease
Of
Quantity
At
Final
Sequence
Two-Step
Trigger
Operation
(GTAW)
..Jtj
Four-Step
Trigger
Operation
(GTAW)
t4~~/\
Initial
Sequence
Final
Amperage
J\~_
Final
Time
Initial
Slope
Press
And
Hold
/-~
Trigger
Hold
(GTAW)
High
Temperature
1
\,
Single-Phase
OM-183
173
Page
6
SECTION
3-
INSTALLATION
3-1.
Dimensions
And
Weights
A
35-1/2
in
(910
mm)
B
24
in
(615
mm)
C
22-3/4
in
(583
mm)
*With
lifting
eye
down
Weight
c~
Dimensions
B
dim_i
3/96
-
ST-BOO
402
/
ST-li
7
264-C
3-2.
Selecting
A
Location
351
lb
(159
kg)
OM-183
173
Page
7
3-4.
Weld
Output
Terminals
And
Selecting
Cable
Sizes
Weld
Output
Terminals
Welding
Amperes
Total
Cable
(Copper)
Length
In
Weld
Circuit
Not
Exceeding
100
ft
(30
m)
Or
Less
150ft
(45
m)
200ft
(60
m)
250ft
(70
m)
300ft
I
350ft
1
(90
m)
1(105
m)
400ft
f(120
m)
1060%
Duty
Cycle
60100%
Duty
Cycle
10
100%
Duty
Cycle
~ii~~IEEuI1
Os
~
~
/~
100
4 4
4
3
2
1
1/0
1/0
150
200
3
3
3
2
2
1
1
1/0
1/0
2/0
2/0
3/0
3/0
4/0
3/0
4/0
250
2
1
1/0
2/0 3/0
4/0
2-2/0
2-2/0
300
1
1/0
2/0
3/0
4/0
2-2/0 2-3/0
2-3/0
350
1/0
2/0 3/0
4/0
2-2/0
2-3/0
2-3/0
2-4/0
400
1/0
2/0
3/0 4/0
2-2/0
2-3/0
2-4/0 2-4/0
Ref.
ST-800
312-A
500
2/0
3/0
4/0
2-2/0
2-3/0
2-4/0
3-3/0
3-3/0
Weld
cable
size
(AWG)
is
based
on
either
a
4
volts
or
less
drop
or
a
current
density
of
at
least
300
circular
mils
per
ampere.
S-0007-D
3-3.
115
VAC
Receptacle,
Circuit
Breaker,
And
Shielding
Gas
Connections
1
ll5Vl5AACReceptacle
RC2
2
Circuit
Breaker
CB1
Receptacle
is
protected
from
over
load
by
CB1.
Press
button
to
reset
breaker.
3
Gas
Fittings
Fittings
have
5/8-18
right-hand
threads.
4
Cylinder
Valve
Open
valve
slightly
so
gas
flow
blows
dirt
from
valve.
Close
valve.
Js~~o~
0.
1
5
Regulator/Flowmeter
6
Flow
Adjust
Route
Cables
and
hoses under
bar.
3
Typical
flow
rate
is
15
cfh
(cubic
feet
per
hour).
Tools
Needed:
~
5/8,1-1/8in
Ref.
ST-800 312-Al
Ref.
ST-i
58
697-A
r
A
ARC
WELDING
can
cause
Electromagnetic
Interference.
To
reduce
possible
interference,
keep
weld
cables
as
short
as
possible,
close
together,
and
down
low,
such
as
on
the
L~J
floor.
Locate
welding
operation
100
meters
from
any
sensitive
electronic
equipment.
Be
sure
this
welding
machine
is
installed
and
grounded
according
to
this
manual.
If
interference
still
occurs,
the
user
must
take
extra
measures
such
as
moving
the
welding
machine,
using
shielded
cables,
using
line
filters,
or
shielding
the
work
area.
OM-183
173
Page
8
3-5.
Remote
14
Receptacle
Information
*The
remaining
sockets
are
not
used.
3-6.
Electrical
Service
Guide
Socket*
Information
Command
reference;
0
to
+10
volts
dc
output
to
remote
control.
Remote
control
circuit
common.
0
to
+10
volts
dc
input
command
signal
from
remote
control.
Circuit
Common.
Three-Phase
Input
Voltage
380
415
Input
Amperes
At
Rated
Output
23
21
Max
Recommended
Standard
Fuse
Or
Circuit
Breaker
Rating
In
Amperes
35
30
Mm
Input
Conductor
Size
In
AWG/Kcmil
12
12
Max
Recommended
Input
Conductor
Length
In
Feet
(Meters)
132
(40)
158(48)
Mm
Grounding
Conductor
Size
In
AWG/Kcmil
12
12
Reference:
1996
National
Electrical
Code
(NEC).
S-0092J
Single-Phase
Input
Voltage
380
415
Input
Amperes
At
Rated
Output
61
54
Max
Recommended
Standard
Fuse
Or
Circuit
Breaker
Rating
In
Amperes
90
80
Mm
Input
Conductor
Size
In
AWG/Kcmil
8
8
Max
Recommended
Input
Conductor
Length
In
Feet
(Meters)
127(39)
151
(46)
Mm
Grounding
Conductor
Size
In
AWGIKcmiI
8
8
Reference:
1996
National
Electrical
Code
(NEC).
s-ooszi
A
24
volts
ac.
f~
~
OWPUT
(coNT~ToR)
B
Contact
closure
to
A
completes
24
volts
ac
contactor
control
circuit.
A
AMPERAGE
C
0
E
K
Ret.
ST-800
312-A
OM-183
173
Page
9
3-7.
Placing
Jumper
Links
OM-183
173
Page
10
3-8.
Connecting
Input
Power
1
Input
Power
Connection
Label
2
Input
And
Grounding
Conductors
See
Section
3-6.
3
Line
Disconnect
Device
See
Section
3-6.
Reinstall
rear
cover.
3/8,
1/2,
7/16
in
Single-Phase
Connections
npul_3
3196
-
Ref.
ST-800
314
OM-183
173
Page
11
4-1.
Controls
SECTION
4-
OPERATION
k~\_\~__/.~7~J
I__t-~=
\~V/77:j
/7
oil
II
~
4-2.
Polarity
Switch
And
Pilot
Lights
ri
k!~$~
1234
n
78J
0
I
10
11
II
I
I
/
I
1
Mode
Switch
(See
Section
4-3)
2
Amperage
Switch
(See
Section
4-6)
3
Output
Switch
And
Light
(See
Section
4-5)
4
Start
Switch
(See
Section
4-11)
5
Polarity
Switch
And
Lights
(See
Section
4-2)
6
Amperage/Preset
Meter
(See
Section
4-4)
7
Voltmeter
(See
Section
4-4)
8
Amperage
Adjustment
Controls
(See
Section
4-6)
9
AC
Frequency
Controls
(See
Section
4-9)
10
High
Temperature
Shutdown
Light
_-
12
11
Over
Voltage
Shutdown
Light
See
Section
5-2)
13
12
Postflow
Time
Control
(See
Section
4-10)
13
AC
Balance
Controls
(See
Section
4-8)
14
Power
On/Off
Switch
14
(See
Section
4-12)
A
Wear
approved
ear
muffs
or
ear
plugs
if
noise
exposure
exceeds
OSHA
limits.
ST-800
312-A
1
A
Do
not
use
AC
output
in
damp
areas,
if
movement
is
confined,
or
it
there
is
a
dan
ger
of
falling.
Use
AC
output
ONLY
if
required
for
the
welding
process,
and
then
use
a
remote
output
control.
1
Polarity
Switch
Use
switch
to
select
weld
output.
2
Electrode
Positive
Pilot
Light
3
Electrode
Negative
Pilot
Light
Both
lights
go
on
when
switch
is
in
AC
position.
or~
+1-
Ref.
ST-i
69496-A
OM-183
173
Page
12
4-3.
Mode
Switch
4-4.
Amperage/Preset
Meter
And
Voltmeter
4-5.
Output
Switch
And
Pilot
Light
1
Mode
Switch
Use
switch
to
select
SMAW
or
either
GTAW
welding
process.
Selecting
either
GTAW
position
en
ables
the
Start
switch
and
gas
~
valve;
both
are
disabled
when
the
______
SMAW
position
is
selected.
GTAW
Tngger
Hold
functions
as
follows:
Press
torch
switch
to
start
arc.
Switch
can
be
released
and
arc
re
mains
on.
Press
switch
to
stop
arc.
1
Amperage/Preset
Meter
A
V
Use
meter
to
preset
amperage,
ac
frequency,
and
ac
balance.
Meter
displays
average
weld
amperage
output
of
unit
to
nearest
ampere
when
welding.
2
Voltmeter
Voltmeter
displays
average
volt
age
(to
the
nearest
0.1
V)
at
the
weld
output
terminals.
2
0~2
I
A
Weld
output
terminals
are
energized
when
switch
is
On
and
power
is
On.
Do
not
touch
torch
or
electrode
and
work
clamp
at
the
same
time.
1
Output
Switch
1
2
Pilot
Light
Use
switch
to
select
way
of
control
ling
unit
oulput.
For
weld
output,
place
switch
in
On
position.
For
remote
output
control,
place
switch
in
Remote
14
position
(see
Section
3-5).
Pilot
light
stays
on
continuously
in
On
position,
but
only
when
contac
tor
is
energized
in
Remote
14
position.
OM-183
173
Page
13
4-6.
Amperage
Adjustment
Controls
1
Amperage
Control
Switch
Use
switch
to
select
way
of
control
ling
amperage
adjustment.
For
front
panel
control,
place
switch
in
Panel
position.
For
remote
control,
place
switch
in
Remote
14
position.
2
Electrode
Positive
Amperage
Adjustment
Control
And
Pushbutton
Set
Polarity
switch
to
AC,
press
pushbutton
and
use
control
and
Amperage/Preset
meter
to
adjust
weld
amperage
for
positive
half of
ac
square
wave.
When
Polarity
switch
is
in
Elec
trode
Positive
position,
pushbutton
does
not
need
to
be
pressed
to
adjust
control.
3
Electrode
Negative
Amperage
Adjustment
Control
And
Pushbutton
Set
Polarity
switch
to
AC,
press
pushbutton
and
use
control
and
Amperage/Preset
meter
to
adjust
weld
amperage
for
negative
halt
of
ac
square
wave.
When
Polarity
switch
is
in
Elec
trode
Negative
position,
pushbut
ton
does
not
need
to
be
pressed
to
adjust
control.
The
controls
require
3
tums
to
go
from
minimum
to
maximum,
and
may
be
adjusted
while
welding.
Set
Electrode
Positive
Amperage
Level
)
Set
Electrode
Negative
Amperage
Level
Output
A
Electrode
Positve
250
A
Electrode
Negative
Ref.
5T-169
496-A
I
Ref.
54~955
0
A
3
~
If
Polarity
switch
is
set
incorrectly,
the
Amperage/Preset
meter
goes
blank
when
the
pushbutton
is
pressed.
Example:
Setting
Amperage
For
AC
Output:
150~
AMPERAGEIPRESET
250
AMPERAGEIPRESET
A4
OM-183
173
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Miller KG291379 Owner's manual

Miller
Brand
Miller
Model
KG291379
Category
Welding System
Type
Owner's manual
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