Miller MMT-400A1 Owner's manual

Miller
Brand
Miller
Model
MMT-400A1
Category
Welding System
Type
Owner's manual

This manual is also suitable for

March
1978
FORM:
OM-1023
I~.
Eftective
With
Style
No.
HG-GA
MODEL
MMT-300A1
MMT-400A1
RETURN
TO
FOLD~
OWNERS
MAN
UAL
N
~
~:~
:~
rnhIIEi~
MILLER
ELECTRIC
MFG.
CO.
718
S.
BOUNDS
ST.
P.O.
Bwc
1079
APPLETON
WI
54912
USA
ADDITIONAL
COPY
PRICE
30
CENTS
0
NWSA
CODE
NO. 4579
PRINTED
IN
USA.
LIMITED
WARRANTY
EFFECTIVE:
FEBRUARY
20,
1978
This
warranty
supersedes
all
previous
MILLER
warranties
and
is
ex
clusive
with
no
other
guarantees
or
warranties
expressed
or
implied.
LIMITED
WARRANTYMiller
Electric
Mfg.
Co.,
Apple.
1.
Arc
welders,
power
sources,
and
components.
.
1
year
ton,
Wisconsin
warrants
to
Customer
that
all
rfew
and
unused
2.
Original
main
power
rectifiers
3
years
Equipment
furnished
by
Miller
is
free
from
defect
in
(Labor
1
year
only)
workmanship
and
material
as
of
the
time
and
place
of
delivery
by
Miller.
No
warranty
is
made
by
Miller
with
3.
All
welding
guns
and
feeder/guns
90
days
respect
to
engines,
trade
accessories
or
other
items
menu-
4.
Allother
Millermatic
Feeders
1
year
factured
by
others.
Such
engines,
trade
accessories
and
other
provided
that
the
user
so
notifies
Miller
in
writing
within
thirty
items
are
sold
subject
to
the
warranties
of
their
respective
(30)
days
of
the
date
of
such
failure.
manufacturers,
if
any.
The
manufacturers
warranty
on
5.
Replacement
or
repair
parts
exclusive
of
labor
60
days
engines
is
for
a
period
of
one
year.
MILLER
warranty
does
not
apply
to
components
having
ANY
EXPRESS
WARRANTY
NOT
PROVIDED
normal
useful
life
of
less
than
one
(1)
year,
such
as
spot
HEREIN
AND ANY
IMPLIED
WARRANTY,
GUARANTY
welder
tips,
relay
and
contactor
points,
MILLERMATIC
OR
REPRESENTATION
AS
TO
PERFORMANCE,
AND
parts
that
come
in
contact
with
the
welding
wire
including
ANY
REMEDY
FOR
BREACH
OF
CONTRACT
WHICH,
nozzles
and
nozzle
insulators
where
failure
does
not
result
BUT
FOR
THIS
PROVISION,
MIGHT
ARISE
BY
from
defect
in
workmanship
or
material.
IMPLICATION,
OPERATION
OF
LAW,
CUSTOM
OF
TRADE
OR
COURSE
OF
DEALING,
INCLUDING
ANY
In
the
case
of
Millers
breach
of
warranty
or
any
other
IMPLIED
WARRANTY
OF
MERCHANTABILITY
OR
OF
duty
with
respect
to
the
quality
of
any
goods,
the
exclusive
remedies
therefor
shall
be,
at
Millers
option,
(1)
repair
or
(2)
FITNESS
FOR
PARTICULAR
PURPOSE,
WITH
RESPECT
replacement
or.
where
authorized
in
writing
by
Miller
in
TO
ANY
AND
ALL
EQUIPMENT
FURNISHED
BY
appropriate
cases,
(3)
the
reasonable
cost
of
repair
or
MILLER
IS
EXCLUDED
AND
DISCLAIMED
BY
MILLER.
replacement
at
an
authorized
Miller
service
station
or
(4)
payment
of
or
credit for
the
purchase
price
(less
reasonable
EXCEPT
AS
EXPRESSLY
PROVIDED
BY MILLER
IN
depreciation
based
upon
actual
use)
upon
return
of
the
goods
WRITING,
MILLER
PRODUCTS
ARE
INTENDED
FOR
at
Customers
risk
and
expense.
All
transactions
are
F.O.B.
ULTIMATE
PURCHASE
BY
COMMERCIAL/INDUSTRIAL
Appleton,
Wisconsin.
Upon
receipt
of
notice
of
apparent
USERS
AND
FOR
OPERATION
BY
PERSONS
TRAINED
defect
or
failure,
Miller
shall
instruct
the
claimant
on
the
AND
EXPERIENCED
IN
THE
USE
AND
MAINTENANCE
warranty
claim
procedures
to
be
followed.
OF
WELDING
EQUIPMENT
AND
NOT,
FOR
CONSUMERS
As
a
matter
of
general
policy
only,
Miller
may
honor
an
OR
CONSUMER
USE.
MILLER
WARRANTIES
DO
NOT
original
users
warranty
claims
on
warranted
Equipment
in
EXTEND
TO,
AND
NO
RESELLER
IS
AUTHORIZED
TO
the
event
of
failure
resulting
from
a
defect
within
the
following
periods
from
the
date
of
delivery
of
Equipment
to
EXTEND
MILLERS
WARRANTIES
TO,
ANY
the
original
user:
CONSUMER.
ERRATA
SHEET
After
this
manual
was
printed,
refinements
in
equipment
design
occurred.
This
sheet
lists
exceptions
to
data
appearing
later
in
this
manual.
Effective
With
Style
No.
HJ-6
item
Part
No.
Listed
Replaced
With
No.
In
Parts
List
Part
No.
Description
Quantity
43
603
886
Deleted
44
604
874
Deleted
46
603
887
Deleted
47
604
311
Deleted
48
057
027
053
132
RELIEF,
strain
1
51
602
087
Deleted
52
601
845
Deleted
53
056847
Deleted
059
258
BLOCK,
mounting
-
switch
1
059
290
NUT,
speed
push
-
on
-
type
.320
ID
x
7/16
OD
1
059
294
SPRING,
compression
1
059
293
RIVET,
steel
-
solid
flat
hd
7/32
x
1-1/4
1
BE
SURE
TO
PROVIDE
STOCK,
MODEL,
AND
STYLE
NUMBERS
WHEN
ORDERING
REPLACEMENT
PARTS.
OM-1
023
Page
A
SECTION
1
-
INTRODUCTION
Model
Ampere
Rating
100%
Duty
Cycle
dcrp
CO2
I
Argon
Cable
And
Hose
Length
Cooling
Method
Dimensions
In
Inches
Approx.
Weight
~
Pounds
Height
I
Length
~
6-1/2
~l3-l/2
6-1/2
13-1/2
Net
Shipping
300
Ampere
300
I
200
Amps.
I
Amps.
10
Ft.
15
Ft.
Air
9
12
10
13
400
Ampere
400
I
Amps
lOFt.
15
Ft.
Air
10
13
11
14
1-1.
GENERAL
This
manual
has
been
prepared
especially
for
use
in
familiar.
izing
personnel
with
the
design,
installation,
operation,
main
tenance,
end
troubleshooting
of
this
equipment.
All
informs
tion
presented
herein
should
be
given
careful
consideration
to
assure
optimum
performance
of
this
equipment.
1-2.
RECEIVING-HANDLING
Prior
to
installing
this
equipment,
clean
all
packing
material
from
around
the
unit
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
if
occasion
to
file
claim
arises.
When
requesting
information
concerning
this
equipment,
it
is
essential
that
Model
Description
and/or
Stock
Number
and
Serial
(or
Style)
Numbers
of
the
equipment
be
supplied.
1-4.
SAFETY
Before
the
equipment
is
put
into
operation,
the
safety
sec
tion
at
the
front
of
the
welding
power
source
or
welding
genel-ator
manual
should
be
read
completely.
This
will
help
avoid
possible
injury
due
to
misuse
or
improper
welding
applications.
The
following
definitions
apply
to
CAUTION,
IMPORTANT,
and
NOTE
blocks
found
throughout
this
manual:
CAUTION
Under
this
heading,
installation,
operating,
and
main-
U
tenance
procedures
or
practices
will
be
found
that
if
not
carefully
followed
may
create
a
hazard
to
per
sonnel.
1-3.
DESCRIPTION
This
gun
is
manufactured
in
two
model
classifications:
300
amp
and
400
amp.
Both
models
are
air
cooled
and
are
designed
specifically
for
the
Gas
Metal-Arc
Consumable
Electrode
Welding
process.
The
design
features
of
the
300
amp
model
permits
use
of
.030,
.035,
.045
diameter
hard
wire
and
.045
diameter
flux
cored
wire.
This
gun
is
rated
at
300
amperes,
100
percent
duty
cycle
when
used
with
C02
shielding
gas.
The
design
features
of
the
400
amp
model
permits
use
of
either
flux
cored
or
hard
wires
having
diameters
.045.
1/16,
and
5/64.
This
gun
is
rated
at
400
amperes.
100
percent
duty
cycle
when
used
with
C02
shielding
gas.
The
gun
is
shipped
with
the
proper
components
installed
for
wire
size
ordered.
2-1.
GAS
HOSE
CONNECTIONS
(Figure
2-1)
Connect
the
gas
hose
from
the
gun
to
the
gas
connection
on
the
control/feeder
and
tighten.
This
fitting
has
a
right-hand
thread.
2-2.
CONTROL
SWITCH
RECEPTACLE
(Figure
2-1)
Insert
the
two-prong
twistlock
plug
from
the
gun
control
cable
into
the
control
switch
receptacle
on
the
control/feeder
and
rotate
plug
clockwise.
2-3.
WELD
CABLE
CONNECTIONS
(Figure
2-1)
Connect
the
weld
power
cable
from
the
gun
to
the
weld
cable
connector
on
the
control/feeder.
Tighten
the
nut
on
this
connection.
I
J
IMPORTANT
Under
this
heading,
installation,
operating,
and
main
tenance
procedures
or
practices
will
be
found
that
if
not
carefully
followed
may
result
in
damage
to
equip
ment.
U
.
E~E1
Under
this
heading,
explanatory
statements
will
be
found
that
need
special
emphasis
to
obtain
the
most
efficient
operation
of
the
equipment.
I
Ensure
that
the
welding
power
source
is
completely
~iut
down
and
that
power
is
removed
from
the
feeder/control
prior
to
installing
the
gun.
SECTION
2
-
INSTALLATION
2-4.
CONTACT
TUBE
AND
WIRE
GUIDE
U
I
Contact
tubes
usually
have
the
wire
size
they
are
designed
for
stamped
on
the
tube
body.
Check
the
contact
tube
to
make
sure
it
is
the
correct
size
for
the
wire
being
used.
Check
the
wire
guides
on
the
control/feeder
to
make
sure
they
are
the
correct
size.
2-5.
OUTLET
GUIDE
CONNECTIONS
(Figure
2-1)
1.
Ensure
that
proper
size
components
are
installed
in
the
gun
assembly
and
the
control/feeder
for
the
wire
size
being
used
(refer
to
respective
parts
list).
2.
Thread
the
electrode
wire
through
the
drive
roll
of
the
control/feeder
so
it
extends
about
3
inches
beyond
the
outlet
guide
hole.
3.
Close
and
secure
the
gear
cover(s).
4.
Slide
the
outlet
guide
over
the
wire
and
into
the
drive
roll
assembly
housing.
5.
Ensure
that
the
flat
side
of
the
outlet
guide
is
facing
the
set
screw.
OM-1023
Page
1
IMPORTANT
The
outlet
guide
should
be
positioned
as
close
as
possible
to
the
drive
rolls
without
touching
them.
This
gives
the
maximum
column
wire
strength
thus
elimin
ating
waves
in
the
wire.
When
more
pressure
is
applied
et
any
time
the
clearance
should
be
rechecked
on
all
guides.
6.
Position
the
outlet
guide
as
close
as
possible
to
the
drive
rolls
without
touching
them.
7.
Tighten
the
locking
screws.
3-1.
GASMETALARCWELDING
(GMAW)
1.
Ensure
that
proper
electrical
connections
have
been
made
to
the
welding
power
source
and
the
control/
feeder
(refer
to
the
respective
Owners
Manuals).
2.
Ensure
that
the
proper
shielding
gas
is
connected
to
the
control/feeder.
3.
Ensure
that
the
welding
wire
has
been
properly
threaded
and
that
correct
initial
tensions
have
been
set
on
the
control/feeder
(refer
to
the
control/feeder
Owners
Manual).
4.
Turn
on
the
shielding
gas
supply.
5.
Place
controls
on
the
control/feeder
in
the
required
positions
for
the
welding
set
up.
6.
Energize
the
control/feeder
(the
welding
power
source
must
be
energized
if
the
control/feeder
power
input
is
connected
to
the
welding
power
source).
I
welding
power
source
is
e~zed
and
the
switch
lever
on
the
gun
is
depressed,
open-circuit
voltage
will
be
present
on
the
welding
wire
and
any
metal
part
making
contact
with
it.
I
When
installing
new
equipment,
or
after
prolonged
shutdown,
allow
shielding
gas
to
flow
continuously
for
at
least
one
minute
prior
to
welding
in
order
to
purge
the
shielding
gas
line.
Place
the
Wire
Speed
control
to
the
minimum
setting
to
avoid
wasting
the
welding
wire
while
purging.
7.
Press
the
Purge
button
(if
applicable)
or
the
switch
lever
on
the
gun
handle
to
purge
the
gas
line.
8.
Actuate
the
swtich
on
the
gun
handle
to
run
the
wire
out
beyond
the
end
of
the
gas
nozzle
(if
applicable).
Cut
the
wire
off
approximately
1/4
to
3/8
from
the
nozzle.
9.
Set
the
Wire
Speed
control
on
the
control/feeder
slightly
in
excess
of
anticipated
wire
speed.
It
is
better
to
have
the
wire
speed
rate
too
fast
than
too
slow.
If
the
wire
feed
rate
is
too
slow
upon
initial
welding,
the
wire
may
burn back
into
the
contact
tube,
thus
damaging
it.
10.
Place
the
controls
on
the
welding
power
source
in
the
required
position
for
the
welding
set
up
(refer
to
welding
power
source
Owners
Manual).
11.
Energize
the
welding
power
source.
CAUTION
The
welding
wire
and
all
metal
parts
in
contact
with
it
are
energized
while
welding.
Do
not
touch
the
welding
wire
or
any
metal
part
making
contact
with
it.
12.
Hold
the
end
of
the
gas
nozzle
approximately
1/2
from
the
workpiece.
13.
Press
the
switch
lever
on
the
gun
handle.
Gas
will
start
to
flow,
wire
will
start
to
feed
and
the
arc
will
be
established.
If
wire
slippage
is
noticed,
tighten
drive
roll
pressure
adjustment
1/4
turn
at
a
time
until
slippage
stops.
Do
not
overtighten.
Ensure
that
the
welding
power
source
is
completely
shut
down
and
that
power
is
removed
from
the
feeder/control
prior
to
performing
drive
roll
pressure
adjustment.
To
Control
Switch
Connect
ion
Outlet
Guide
Should
Not
Touch
Gears.
Gas
Out
TC-056
811-4
Figure
2-1.
Gun
to
Control/Feeder
Connections
SECTION
3
-
SEQUENCE
OF
OPERATION
weld
Cable
Connector
Assembly
I
rri
Prior
to
welding,
it
is
imperative
that
proper
protective
clothing
(welding
coat
and
gloves)
and
eye
protection
(glasses
and/or
welding
helmet)
be
put
on.
Failure
to
comply
may
result
in
serious
or
permanent
bodily
damage.
Page
2
~jTANT
Whenever
drive
roll
pressure
is
adjusted
inlet
and
outlet
guide
clearance
must
be
rechecked.
14.
After
the
controls
on
the
welding
power
source
and
the
controlffeeder
have
been
adjusted
for
normal
operation,
the
control/feeder
and
welding
power
source
will
function
automatically
whenever
the
gun
switch
is
depressed.
Releasing
the
gun
switch
lever
will
extinguish
the
arc
and
cause
wire
feed
and
gas
flow
to
stop.
that
the
welding
power
sou
rce
is
Co
mp
letely
shut
down
and
that
power
is
removed
from
the
feeder/control
prior
to
attempting
maintenance
work
on
this
gun
or
associated
equipment.
4-1.
INSPECTION
AND
UPKEEP
Usage
and
shop
conditions
will
determine
frequency
and
type
of
maintenance
required.
1.
Inspect
gun
for
broken
areas,
cracks
and
loose
parts;
tighten,
repair
and
replace
as
required.
2.
Carefully
remove
any
weld
spatter
or
foreign
matter
which
may
accumulate
around
the
nozzle
orifice.
3.
Remove
any
accumulation
around
the
switch.
4.
Repair
or
replace
as
required
all
hose
and
cabling;
give
particular
attention
to
frayed
and
cracked
insulation
and
areas
where
it
enters
equipment.
5.
Remove
grease
and
grime
from
components;
moisture
from
electrical
parts
and
cables.
6.
Blow
Out
the
casing
with
compressed
air
when
changing
wire.
This
removes
any
metal
chips
and
dirt
that
may
have
accumulated.
4-2.
CHANGING
WIRE
SIZES
(Monocoil}(Figure
4-1)
I
that
the
welding
power
sourc~
completely
shut
down
and
that
power
is
removed
from
the
control/feeder
prior
to
changing
the
wire,
control/
feeder
components,
or
gun
components.
Each
time
wire
size
is
changed,
the
gun
and
control/feeder
must
be
adapted
for
use
with
the
new
size
wire.
Refer
to
the
Control/Feeder
Owners
Manual
for
information
involving
changes
in
the
control/feeder
that
are
required
to
handle
different
wire
sizes.
Proceed
as
follows
when
changing
wire
size
with
the
monocoil
assembly
to
help
ensure
proper
installation.
~gunisequippedfo030or.035wireanditis
desired
to
convert
from
one
of
these
wire
sizes
to
the
other,
only
the
contact
tube
(item
4,
Figure
4.1)
will
have
to
be
changed.
However,
if
the
gun
is
equipped
for
.030
or
.035
wire
and
it
is
desired
to
convert
to
.045
wire
(or
vice
versa),
all
of
the
following
steps
will
have
to
be
performed.
6.
Slide
insulating
band
(1)
off
gun
and
remove
flat
head
screw
(10).
7.
Pull
handle
(12)
back
about
six
inches.
Pull
switch
wires
back
along
with handle
(12)
to
avoid
jamming.
8.
Remove
outlet
guide
(19).
9.
Loosen
set
screw
(18)
and
remove
monocojl
connector
(17).
10.
Loosen
set
screw
(9)
and
pull
monocoil
liner
(14)
out
of
outlet
guide
end
and
install
new
monocoil
liner
(14).
Secure
monocoil
liner
(14)
by
tightening
set
screw
(9).
Install
new
monocoil
connector
(17)
securing
mono-
coil
liner
(14)
to
monocoil
connector
(17)
by
tighten
ing
set
screw
(18).
13.
Slide
handle
(12)
Onto
head
tube
(6)
and
secure
With
flat
head
screw
(10).
Slide
insulating
band
(1)
over
screw
(10).
14.
Install
outlet
guide
(19)
on
monocoil
connector
(17).
15.
Install
strain
relief
(15)
onto
outlet
guide
(19)
and
secure
with
screw
(16).
16.
Install
outlet
guide
(19)
into
control/feeder
and
proceed
with
welding
operations.
3-2.
SHUTTING
DOWN
1.
Turn
off
the
shielding
gas
at
the
source.
~ding
is
performed
in
a
confine,failureto
turn
off
the
shielding
gas
supply
could
result
in
a
buildup
of
gas
fumes,
thereby
endangering
personnel
reentering
the
welding
area.
2.
Deenergize
the
controiffeeder
and
the
welding
power
source.
SECTION
4
-
MAINTENANCE
1.
Cut
the
weld bead
knob
off
the
end
of
the
welding
wire
at
the
gun
nozzle
(2).
2.
Loosen
the
outlet
guide
locking
screw
and
pull
the
outlet
guide
from
the
control/feeder
(Figure
2-1).
3.
Cut
the
welding
wire
where
it
enters
the
outlet
guide
(19).
Pull
the
wire
out
of
the
monocoil
assembly
from
the
end
with
the
outlet
guide.
4.
Remove
screw
(16)
and
strain
relief
(15).
5.
Remove
nozzle
(2),
contact
tube
(4),
and
contact
tube
adapter
(5).
Install
new
items
in
reverse
order
just
given.
11.
12.
4-3.
CHANGING
WIRE
SIZES
(Conduit)(Figure
4-1)
I
that
the
welding
power
so~s
completely
shut
down
and
that
power
is
removed
from
the
control/feeder
prior
to
changing
the
wire,
control/
feeder
components,
or
gun
components.
Each
time
wire
size
is
changed,
the
gun
and
control/feeder
must
be
adapted
for
use
with
the
new
size
wire.
Refer
to
the
Control/Feeder
Owners
Manual
for
information
involving
changes
in
the
control/feeder
that
are
required
to
handle
different
wire
sizes.
OM-1023
Page
3
March
1978
FORM:
OM-1023
PARTS
LIST
Effective
With
Style
No.
HG-6A
MODEL
MMT-300A1
MMT-400A1
2,
5-
6
4
7
11
I
55
14
16
38
26
33
TC-056
~
1.8
Conduit
Modes
tflustrat~~)
Gun
AssembLY
t400
~mpe!e
Figure
A
.
OM.1023
Page
1
Item
Factory
No.
Part
No
Figure
A
Gun
Assembly
Quantity
Model
1
*056
710
2
056816
2
056818
3
054
572
4
007319
4
007
321
4
007318
4
007
320
4
007317
4
007 322
4
056
895
4
056
900
4
056896
4
056901
4
056897
4
056
902
5
*~5~
820
5
*056
821
5
*o5~
822
5
*o5~
823
5
*o5~
824
6
056
825
6
056
826
7
007
330
7
007
332
8
058
174
604
771
10
056652
10
056653
10
056619
10
056621
10
057218
10
057220
10
057219
10
057221
11
057083
11
056741
11
056836
12
058190
13
058
192
14
058
191
15
604771
16
056610
17
602090
18
056831
19
056832
19
056833
INSULATOR,
nozzle
11/16
inch
NOZZLE,
5/8
orifice
2-5/8
long
NOZZLE,
5/8
orifice
2-3/4
long
BAND,
rubber
1-1/18
ID
x
3/64
wide
x
3/4
KIT-WIRE,
guide
.030
lOft
or
KIT-WIRE,
guide
.030
wire
l5ft
(See
Fig.
B
Page
4)
KIT-WIRE,
guide
.035
wire
10
ft
or
KIT-WIRE,
guide
.035
wire
l5ft
(See
Fig.
B
Page
4)
KIT-WIRE,
guide
.045
wire
lOft
or
KIT-WIRE,
guide
.045
wire
lSft
(See
Fig.
B
Page
4)
KIT-WIRE,
guide
.045
wire
10
ft
or
KIT-WIRE,
guide
.045
wire
15
ft
(consisting
of)
KIT-WIRE,
guide
1/16
wire
10
ft
or
KIT-WIRE,
guide
1/16
wire
15
ft
(consisting
of)
KIT-WIRE,
guide
5/64
wire
lOft
or
KIT-WIRE,
guide
5/64
wire
15
ft
(consisting
of)
TUBE,
contact
.030
wire
x
1-5/8
-
TUBE,
contact
.035
wire
x
1-5/8
TUBE,
contact
.045
wire
x
1-5/8
-
TUBE,
contact
1/16
wire
x
1-5/8
-
TUBE,
contact
5/64
wire
x
1-5/8
ADAPTER,
tube
-
contact
.030-.045
wire
-
ADAPTER,
tube
-
contact
1/16
x
5/64
wire
CONNECTOR,
monocoil
(consisting
of)
-
CONNECTOR,
conduit
(consisting
of)
..O-RING,1/4x3/8
- -
SCREW,
set
-
steel
10-32
x
1/8
CONDUIT,.O8OlDxlOftor
.CONDUIT,.O8OIDxl5ft
-
CONDUIT,
0.124
ID
x
10
ft
or
-
CONDUIT,
0.124
ID
x
15
ft
MONOCOIL
ASSEMBLY,
.030
&
.035
lOft
or
MONOCOIL
ASSEMBLY,
.030
&
.035
15
ft
(See
Fig.
B
Page
4)
MONOCOILASSEMBLY,.045
10
ft
or
.MONOCOILASSEMBLY,.045
l5ft
(See
Fig.
B
Page
4)
GUIDE,
outlet
.030
&
.035
wire
GUIDE,
outlet
.045
wire
GUIDE,
outlet
1/16
x
5/64
wire
TUBING,
neoprene
5/8
ID
x
3/32
wall
x
4-5/8
INSULATOR,
body
-
head
tube
TUBE,
head
SCREW,
set
-
steel
10-32
x
1/8
LINER,
tube
head
SCREW,
machine
-
steel
flat
hd
10-32
x
3/8
HANDLE
CABLE
ASSEMBLY,
welding
lOft
or
CABLE
ASSEMBLY,
welding
15
ft
(consisting
of)
1
1
1
1
1
1
1
1
1
1 1
1
1
5
5
1
1
1
1 1
1
1 1
1
1
1 1
1 1
1
1
1
1
1
1
1 1
1
1
1 1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 1
1 1
1
1
1
1
1
1
1 1
1
1
1
1
1
300
Amp
Monocoil
Description
Wire
Size
400
Amp
Conduit
.8MM .9MM
1.2MM
.031
.035
.047
.030
.035
.045
Wire
Size
1.2MM
1.6MM
2.0MM
.047
.063
.079
.045
1/16
5/64
1 1
1
1
1
1
1
1
1
1
1
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
OM-1023
Page
2
Item
Factory
No.
Part
No.
Figure
A
Gun
Assembly
(Contd.)
300
Amp
Monocoil
400
Amp
Conduit
20
056443
21
056852
21
056853
22
056803
23
056
854
24
056479
25
602
088
26
056834
26
056
835
27
056848
28
056849
29
056108
30
056855
30
056 856
31
010606
32
056851
33
057 782
33
057
783
34
604
523
35
604 524
36
057
766
36
057
767
37
604811
38
056
830
39
056
839
40
604811
41
056296
42
057
764
43
603 886
44
604
874
45
*604
866
46
603
887
47
604311
48
057 027
49
056845
50
056
846
51
602087
52
601
845
53
056847
54
604
937
55
604
607
CONNECTOR,
torch
end
CABLE,welding
lOft
or
CABLE,
welding
15
ft
LUG,
swedge
on
1/0-2/0
cable
TUBING,
heat
shrink
3/8
dia
x
2-1/2
SPRING,
strain
relief
SCREW,
machine
-
steel
round
hd
10-32
x
1/4
HOSE
ASSEMBLY,
gas
10
ft
or
HOSE
ASSEMBLY,
gas
15
ft
(consisting
of)
FITTING,
hose
-
brass
barbed
nipple
3/16
TBG
FITTING,
hose
-
brass
nut
No.
10
3/8-24
RH
F
ITTING,
hose
-
brass
ferrule
0.425
ID
x
23/32
HOSE,
gas
lOft
or
.HOSE,gasl5ft
F
ITTING,
hose
-
brass
nut
5/8-18
RH
FITTING,
hose
-
brass
barbed
nipple
3/16
TBG
CORD
ASSEMBLY,
switch
8
ft
2
inches
or
CORD
ASSEMBLY,
switch
13
ft
2
inches
SWITCH,
licon
SCREW,
machine
-
steel
round
hd
2-56
x
1/2
GROMMET,
rubber
1/4
ID
x
3/8
mounting
hole
RELIEF,
strain
HOUSING,
switch
-
torch
LEVER,
actuating
-
switch torch
SCREW,
machine
-
steel
round
hd
8-32
x
1-1/4
NUT,
steel
-
self-locking
hex
8-32
.SPRING,
switch
SCREW,
self-tapping
-
pan
hd
6-32
x
1/4
SCREW,
machine
-
steel
10-32
x
3/4
1 1
1
1
1
1
1 1
1 1
1 1
1 1
1
1
1
1
1
1
1 1
1
1
1
1
1 1
1
1
1
1
1
1
1
1 1 1
1
1
1 1
1
1
1
1
1
1
1
1
1 1
1 1 1
2
2.
2
2 2
1 1
1
1
1
1 1
1
1
1
1 1
1
1 1
1
1
1
1
1
1
1
1 1
1
1
1 1
1
1
1
1
1
1
1
1 1
1 1 1
1
1
1
1
1 1
1
1
1
1
1
1 1
1
1
2
2
2
2
2
2
1
1
1 1
1
1
1
1
1 1
1~
1
2 2 2
2 2
2
2
2
2
2
2
2
1
1
1
1
1
1
2
2
2
2
2 2
2
2
2
2
2
2
1
1
1
1
1
1
2 2 2
2
2
2
1 1 1
1
1 1
1
1 1
1
1
1
1
1 1
1
1
1
1
1
1
~~1
1
1
1
1
1
1
1
1
1
1
1 1
1
1
1 1 1
1 1
1
2
2
2
2
2
2
1
1
1
1
1
1
Optional
Equipment
91
056815
92
056817
93
056816
94
056818
95
056819
t057
737
*Recommended
Spare
Parts.
1
1 1
1
1
1
1.1
1
1
1
1 1
1
1
1
1
1
1 1
Quantity
Model
Description
Wire
Size
Wire
Size
.8MM
.9MM
1.2MM
.031
.035
.047
.030
.035
.045
1.2MM
1.6MM
2.0MM
.047
.063
.079
.045
1/16
5/64
1
2
(consisting
of)
CAP,
twistlock
-.
midget
2P2W
-
COVER,
seal
-
tite
receptacle
-
CORD,
18/2
8
ft
2
inches
or
CORD,
18/2
13ft
2
inches
TERMINAL,
disc
-
knife
16-22
wire
SWITCH
&
HOUSING,
(consisting
of)
SWITCH,
torch
(consisting
of)
- .
TERMINAL,
disc
-
knife
16-22
wire
TUBING,
plastic
No.
4
CORD,
18/2
36
inches
NUT,
steel
-
hex
2-56
WASHER,
lock
-
steel
split
No.
2
NOZZLE,
1/2
orifice
2-5/8
long
NOZZLE,
1/2
orifice
2-3/4
long
NOZZLE,
5/8
orifice
2-5/8
long
NOZZLE,
5/8
orifice
2-3/4
long
NOZZLE,
3/4
orifice
2-3/4
long
TUBE,
contact
.052
wire
tCan
be
used
with
.045
wire
guide
kits.
BE
SURE
TO
PROVIDE
MODEL,
STYLE
NUMBER
AND
WIRE
SIZE
WHEN
ORDERING
REPLACEMENT
PARTS.
Page
3
1
1
1
1
1 1
Item
Factory
No.
Part
No.
Figure
B
Monocoil
Assemblies
Description
Quantity
.8MM
.9MM
1.2MM
.031
.035
.047
.030
.035
.045
71
057
307
71
057308
72
057
309
73
602959
74
056112
75
057
182
75
057
183
76
056
758
76
056760
76
056
759
76
057168
77
058 679
77
058
680
78
058174
CONNECTOR,
monocoil
CONNECTOR,
monocoil
FITTING,
brass
-
barbed
liner
FITTING,
hose
-
brass
nut
9/16-18
FITTING,
hose
-
brass
ferrule
0.475
ID
x
23/32
HOSE,
liner
10
ft
or
HOSE,
liner
15
ft
LINER,
monocoil
.030
&
.035
wire
10
ft
or
LINER,
monocoil
.045
wire
10
ft
or
LINER,
monocoil
.030
&
.035
wire
15
ftor
LINER,
monocoil
.045
wire
15
ft
CONNECTOR,
monocoil
.030
&
.035
wire
71
72
73
74
75
76
74
77
78
Figure
B
Monocoil,
Assemblies
TA-057
072-B
BE
SURE
TO
PROVIDE
MODEL,
STYLE
NUMBER
AND
WIRE
SIZE
WHEN
ORDERING
REPLACEMENT
PARTS.
1
1
1
1
1
1
1 1
1
2
2
2
1
1
1
1
1
1
1 1
CONNECTOR,
monocoil
.045
wire
0-RING,
1/4
x
3/8
OM-1023
Page
4
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14

Miller MMT-400A1 Owner's manual

Miller
Brand
Miller
Model
MMT-400A1
Category
Welding System
Type
Owner's manual
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