September
1975
FORM:
OM-1084
wC-II
WC-II/S
wC-I
II
wC-III/S
STOCK
NO.
003
356
003
357
003
359
003
361
MODEL/STOCK
NO.
SERIAL/STYLE
NO.
DATE
PURCHASED
OWNERS
MANUAL
MILLER
ELECTRIC
MFG.
CO.
APPLETON,
WISCONSIN,
USA
54911
U.S
...
Effective
with
serial
No.
HF861993
MODEL
V
NWSA
CODE
NO.
4579
-
~
(
~
~
(
~
C
~
WARRANTY
H
)
MILLER
Electric
Mfg.
Co.,
Appleton,
Wisconsin,
warrants
all
new
equipment
to
be
free
from
defects
in
c
material
and
factory
workmanship
for
the
periods
indicated
below,
provided
the
equipment
is
installed
and
C
I
~
operated
according
to
manufacturers
instructions.
c
C
MILLER
Electnc
Mfg.
Co.s
obligation,
under
this
warranty,
is
limited
to
replacing
or
repairing
any
defective
c
part
or
correcting
any
manufacturing
defect
without
charge during
the
warranty
period
if
MILLERS
inspec
c
~
c
tion
confirms
the
existence
of
such
defects.
MILLERS
option
of
repair
or
replacement
will
be
f.o.b.
factory
at
C)
I
Appleton,
Wisconsin
or
f.o.b.
a
MILLER
authorized
service
facility,
and
therefore
no
compensation
for
trans
portation
costs
of
any
kind
will
be
allowed.
I
I
I
I
I
The
warranty
period,
beginning
on
the
date
of
sale
to
the
original
purchaser-user
of
the
equipment,
will
be
as
I
I
-
I
I
i
follows:
1.
Arc
welders,
power
sources,
and
components
1
year
)
I
2.
Original
main
power
rectifiers
3
years
(unconditionally)
3.
MHFC-L1
Feeder,
MHG-35C1,
20E,
20K,
I
)
C
I
and
all
guns
and
torches
90
days
I
I
4.
All
other
Millermatic
Feeders
1
year
5.
Mag-Diesel
engine
on
DEL-200
6
months
6.
All
other
engines
1
year
C
I
C
Engine
Warranties
are
covered
by
the
engine
manufacturers,
subject
to
their
procedures
and
to
be
handled
I
CD
,
through
their
authorized
local
Service
Stations
or
agencies.
No
warranty
will
be
made
in
respect
to
trade
accessories,
such
being
subject
to
the
warranties
of
their
respective
manufacturers.
C
I
I
CD
I
CD
C
~
C)
MILLER
Electric
Mfg.
Co.
will
not
be
liable
for
any
loss
or
consequential
damage
or
expense
accruing
c
directly
or
indirectly
from
the
use
of
equipment
covered
in
this
warranty.
C
I
C)
C
I
C)
This
warranty
supersedes
all
previous
MILLER
warranties
and
is
exclusive
with
no
other
guarantees
or
c
I
I
C)
warranties
expressed
or
implied.
c
I
C)
p
Q1I~~W.P
Q
W..PJJQWLLP
QQJQJ.IOJL
p
a
0Oop
ob
000T8OTTrO
p
OoOOoUoYp~bTfl
0T0TC?
ERRATA
SHEET
After
this
manual
was
printed,
refinements
in
equipment
design
occurred.
This
sheet
lists
exceptions
to
data
appearing
later
in
this
manual.
NOTE
1The
circuit
diagrams
on
this
Errata
Sheet
supersede
Figures
3-1
and
3-3
in
this
manual.
TO
WELDER
TO
GUN
Circuit
Diagram
No.
CA-003
356-1
B
Figure
3-1.
Circuit
Diagram
For
Model
Without
Contactor
and
Without
Spot
Weld
Controls
<
GRD11
4
42
43
17
72
2
3
44
32507503
0
0 0 0
0
0
0
24
~7
24
70
0
0
03T
CLP1
126
Fr
7
4424$fl
~Z
2
3423230750J
<
~7o~
25324445
Circuit
Diagram
No.
CB-003
357-lB
Figure
3-3.
Circuit
Diagram
For
Model
Without
Contactor
and With
Spot
Weld
Controls
OM-1084
Page
A
Figure
3-4.
Circuit
Diagram
For
Model
With
Contactor
And
With
Spot
Weld
Controls
.11cm
Dia.
Part
No.
Listed
Replaced
With
No.
Mkgs.
In
Parts
List
Part
No.
Description
Quantity
Model
WC-IIIWC-ll/SIWC-III/S
003 820
003
816
038
855
CIRCUIT
CARD
ASSEMBLY
CIRCUIT
CARD
ASSEMBLY
BLOCK,
terminal
20
amp
2
pole
23
I
4
711242
3
244
43503507
2 3
.72
44
43
000000000000zr
0000
04T
172470
0 0
03T
--f
COlT
FROM
PC.
BOARD
PLOt
~al~
------i
IT
Circuit
Diagram
No.
CB-058
706.1B3
61
61
003
816
003
816
4T
OM.1084
Page
B
SECTION
1
-
INTRODUCTION
1-1.
GENERAL
This
manual
has
been
prepared
especially
for
use
in
familiar
izing
personnel
with
the
design,
installation,
operation,
main
tenance,
and
troubleshooting
of
this
equipment.
All
informa
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.
1-3.
DESCRIPTION
This
series
of
weld
controls
is
designed
to
provide
any
con
stant
current
or
constant
potential
dc
welding
power
source
with
the
capability
of
utilizing
a
Gas
Metal-Arc
Welding
Gun
(with
or
without
a
cannister).
The
weld
control
with
contactor
is
designed
to
be
operated
in
conjunction
with
a
welding
power
source
having
no
contac
tor.
Conversely,
the
weld
control
without
contactor
is
de
signed
to
be
operated
in
conjunction
with
a
welding
power
source
equipped
with
a
contactor.
In
addition,
the
weld
con
trol
with
contactor
may
be
operated
from 115
volts
ac
or
dc
whereas
the
weld
control
without
contactor
must
be
opera
ted
from
115
volts
ac
only.
All
models
of
the
weld
control
are
equipped
with
a
Run-In
Speed
Control,
Power
Switch,
and
HIGH
OCV
(open
circuit
voltage(LOW
OCV
jumper
link
selector,
and
Contactor
Control.
Burnback
Control
and
Spot
Weld
Timer
Control
are
supplied
on
the
spot
model.
1-4.
SAFETY
The
following
definitions
apply
to
CAUTION,
IMPORTANT.
and
NOTE
blocks
found
throughout
this
manual:
Under
this
heading,
ins
tallation,
operating,
and
main
tenance
procedures
or
practices
will
be
found
that
if
not
carefully
followed
may
create
a
safety
hazard
to
personnel.
flTANT
1
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
merit.
NOTE
Under
this
heading,
explanatory
statements
will
be
found
that
need
special
emphasis
to
obtain
the
most
efficient
operation
of
the
equipment.
SECTION
2-
INSTALLATION
2-1.
INSTALLATION
PROCEDURES
Ensure
that
all
electrical
power
to
the
welding
power
source
and
the
weld
control
unit
is
completely
discon
nected
prior
to
installation
of
the
weld
control
unit.
1.
Remove
the
weld
control
wrapper.
2.
Route
the
weld
cable
from
the
Gas
Metal-Arc
Gun
through
the
access
hole
on
the
front
panel
labeled
POWER
TO
GUN
and
connect
the
weld
cable
to
the
terminal
on
the
center
baffle
labeled
TO
GAS
METAL-ARC
GUN.
3.
Route
the
weld
cable
from
the
welding
power
source
positive
weld
output
terminal
through
the
access
hole
on
the
front
panel
labeled
TO
MACHINE
POSITIVE
and
connect
the
weld
cable
to
the
terminal
on
the
center
baffle
labeled
TO
WELDING
POWER
SOURCE.
4.
Route
the
gun
control
cable
through
the
strain
relief
clamp
on
the
front
panel
labeled
GUN
CONTROL
CABLE.
5.
Connect
the
eight
numbered
leads
from
the
gun
con
trol
cable
to
the
corresponding
numbered
terminal
on
terminal
strip
iT
on
the
center
baffle.
Tighten
the
strain
relief
clamp.
NOTE
When
the
weld
control
with
contactor
is
to
be
used
in
conjunction
with
a
welding
power
source
that
is
equip
ped
with
a
contactor,
the
contactor
in
the
welding
power
source
must
be
energized
while
using
the
weld
control
unit.
6.
For
weld
control
without
contactor
only
depending
on
the
type
of
welding
power
source
Contactor
Con
trol
circuitry
proceed
as
follows:
I
I
a.
For
a
welding
power
source
which
requires
115
vac
to
be
externally
applied
for
Contactor
Con
trol,
connect
leads
from
the
welding
power
source
Contactor
Control
terminals
to
terminals
42
and
43
of
terminal
strip
2T.
Terminal
strip
2T
is
located
on
the
center
baffle.
NOTE
In
all
models,
terminals
11
and
12
of
terminal
strip
2T
are
available,
if
not
used
for
contactor
control
pur
poses,
for
use
with
equipment
requiring
a
make-and
break
set
of
contacts.
This
set
of
contacts
will
close
and
open
in
unison
with
the
gun
switch
opening
and
closing.
Terminal
strip
2T
is
located
on
the
center
baffle.
I
OM-1084
Page
1
b.
For
a
welding
power
source
which
requires
a
make-and-break
set
of
contacts
for
Contactor
Control,
connect
leads
from
the
welding
power
source
Contactor
Control
terminals
to
terminals
11
and
12
of
terminal
strip
2T.
Terminal
strip
2T
is
located
on
the
center
baffle.
7.
Connect
the
lead
coming
from
the
front
panel
with
the
clamp
attached
to
the
negative
terminal
on
the
welding
power
source.
-
11.11t1.1
-
If
using
a
Gas
Metal-Arc
Gun
equipped
with
a
can
nister,
connect
the
cannister
brake
leads
to
terminals
42
and
43
on
terminal
strip
iT.
Terminal
strip
iT
is
located
on
the
center
baffle.
Connect
the
ground
lead
from
the
cannister
to
the
GROUND
terminal
located
directly
below
terminal
strip
iT.
8.
Connect
the
hose
from
the
shielding
gas
supply
to
the
gas
connector
towards
the
rear
of
the
weld
control.
Connect
the
hose
from
the
Gas
Metal-Arc
Gun
to
the
GAS
connector
on
the
front
of
the
weld
control.
9.
Connect
the
115
volt
power
cable
from
the
weld
con
trol
unit
to
a
115
volt
source.
SECTION
3
-
FUNCTION
OF
CONTROLS
3-1.
POWER
SWITCH
Placing
the
POWER
Switch
on
the
weld
control
unit
in
the
ON
position
will
apply
115
volts
to
the
unit
and
thereby
place
it
in
an
operational
condition.
Placing
the
POWER
Switch
in
the
OFF
position
will
shut
the
weld
control
unit
down.
CAUTION
I
Even
though
the
POWER
Switch
is
in
the
OFF
posi
tion
and
the
unit
is
apparently
shut
down,
115
volts
will
still
be
present
at
the
input
terminals
of
the
POWER
Switch
for
as
long
as
the
115
volts
cable
is
connected
to
its
activated
source.
3-2.
HIGH-LOW
TERMINAL
STRIP
When
a
welding
power
source
with
an
open
circuit
voltage
of
about
50
volts
is
used
the
HIGH-LOW
jumper
link
must
be
placed
in
the
HIGH
OCV
position.
Accordingly,
when
the
welding
power
source
open
circuit
voltage
is
below
50
volts,
the
jumper
link
must
be
placed
in
the
LOW
OCV
position.
The
jumper
link
is
attached
to
the
HIGH-LOW
OCV
terminal
strip
3T
which
is
located
on
the
center
baffle.
3-3.
RUN-IN
SPEED
CONTROL
The
RUN-IN
Speed
Control,
on
the
front
of
the
weld
control
unit,
controls
the
wire
feed
speed
prior
to
arc
initiation.
Once
an
arc
is
established,
the
speed
control
on
the
gun
will
take
over.
3-4.
SPOT-CONTINUOUS
SWITCH
(Models
With
Spot
Welding
Controls
Only)
When
it is
desired
to
use
the
control
unit
for
Gas
Metal-Arc
Spot
Welding,
the
SPOT-CONTINUOUS
Switch
must
be
in
the
SPOT
position.
When
in
the
SPOT
position,
the
WELD
TIME
Control
will
determine
the
duration
of
weld
time.
When
in
the
CONTINUOUS
position,
the
gun
will
function
normally.
3-5.
TIME
RANGE
SWITCH
(Models
With
Spot
Welding
Controls
Only)
The
TIME
RANGE
Switch
provides
selection
of
two
spot
weld
time
ranges.
In
the
upper
position,
this
switch
provides
an
adjustable
spot
weld
time
range
of
.2
to
2.5
seconds
through
the
setting
of
the
WELD
TIME
Control.
In
the
lower
position,
this
switch
allows
the
WELD
TIME
Control
to
select
a
spot
weld
time
range
of
between
2.5
to
5
s!conds.
3-6.
WELD
TIME
CONTROL
(Models
With
Spot
Welding
Controls
Only)
The
WELD
TIME
Control
will
determine
the
period
of
time
that
the
electrode
wire
will
be
allowed
to
feed.
The
WELD
TIME
Control
will
begin
to
time
out
as
soon
as
the
electrode
wire
touches
the
workpiece.
3-7.
BURNBACK
TIME
CONTROL
(Models
With
Spot
Welding
Controls
Only)
The
purpose
of
the
BURNBACK
TIME
Control
is
to
prevent
the
electrode
wire
from
either
sticking
to
the
workpiece
or
contact
tube
after
the
weld
time
is
complete.
The
BURN-
BACK
TIME
Control
prevents
this
by
providing
an
adjustable
time
period
(up
to
a
maximum
of
.25
secondl
that
the
elec
trode
wire
remains
electrically
hot
after
the
wire
has
stopped
feeding.
If
the
welding
wire
freezes
in
the
weld
puddle,
the
BURN-
BACK
TIME
Control
setting
should
be
increased,
thereby
keeping
the
welding
wire
electrically
hot
for
a
longer
period
of
time
after
wire feed
has
stopped.
This
in
turn
will
permit
the
electrode
wire
to
burn
free
of
the
weld
puddle.
If
the
welding
wire
freezes
in
the
contact
tube,
the
BURN-
BACK
TIME
Control
setting
should
be
decreased.
Decreasing
the
setting
will
permit
the
welding
wire
to
be
electrically
hot
for
a
lesser
period
of
time
thus
permitting
the
welding
wire
to
stick
out
of
the
contact
tube
at
the
conclusion
of
the
weld.
I
IMPORTANT
I
The
weld
control
with
contactor
may
be
operated
from
115
volts
ac or
dc.
The
weld
control
without
contactor
must
be
operated
from
115
volts
ac.
I
10.
Replace
the
weld
control
wrapper.
I
I
Page
2
TO
WELDER
TO
GUN
32507503
L~CR3
Circuit
Diagram
No.
CA-003
356-1Al
Figure
3-1.
Circuit
Diagram
For
Model
Without
Contactor
and
Without
Spot
Weld
Controls
Circuit
Diagram
No.
CA-058
693-lB
1
Figure
3-2.
Circuit
Diagram
For
Model
With
Contactor
and
Without
Spot
Weld
Controls
GRD.11
7
4424311
122
3
44
0
0
0
0
0 0
17
24
70
0
0
03T
25
O~~
CLP1
16
14
GRD.~1
CR1
iT
11
5V.
AC/DC
c~4-q1
PLG,
I
O7~1I
25
/
4
17
/2
42
3 2
44
45503507
0
0
0
0 0
0
Q~J
QJ
17
24
70
0 0
031
TO
WELDER
CLP,
TO
GUN
IT
OM-1
084
Page
3
II
Circuit
Diagram
No.
CB-058
706-1B2
Figure
3-4.
Circuit
Diagram
For
Model
With
Contactor
and
With
Spot
Weld
Controls
7
44243/7
122
34432507503
0 0 0
0
0
0
0 0
0
0
0 0
21
17
24
70
0
0
031
<
00011
2
3
32
44
45
0
0 0
0
041
4-
E0~T
FR07.7
PC
BOARD
10
WELDER
10
GUN
Circuit
Diagram
No.
CB-003
357-1A1
Figure
3-3.
Circuit
Diagram
For
Model
Without
Contactor
and
With
Spot
Weld
Controls
25
1
4
7/72423
24445503507
0
0 0 0 0
0
0 0
0 0
0
021
17
24
70
0
0
031
<
GRDj~
2
3
32
44
45
EDIT
FROM
/
PC
BOARD
---.-----j
TO
GUN
Page
4
September
1975
FORM:
OM-1084
MODEL
wC-II
wC-Il/s
wC-III
wc.III/S
STOCK
NO.
003
356
003
357
003
359
003
361
MODEL/STOCK
NO.
SERIAL/STYLE
NO.
DATE
PURCHASED
PARTS
LIST
MILLER
ELECTRIC
MFG.
CO.
APPLETON,
WISCONSIN,
USA.
54911
Effective
with
serial
No.
HF861993
NWSA
CODE
NO.
4579
0
0
-v
CD
5FigC
6
7
8
9
Fig
Figure
A
Main
Assembly
TD-004
494
S
Quantity
Item
Dia.
Factory
Model
No.
Mkgs.
Part
No.
Description
WC-lI
IWC-IIIIWC-ll/sIWC-lll/s
Figure
A
Main
Assembly
1
003
452
WRAPPER
(attaching
hardware
G)
1
1 1 1
2
iT
038
782
BLOCK,
terminal
20
amp
10
pole
(attaching
hardware
C,
L
&T)
1
1
1
1
3
D1,2
026
202
DIODE,
1
amp
400
volts
straight
polarity
2
2
4
003 976
LINK,
connector
5
5
5
W
003
288
CONTACTOR,
size
1-3/4
4
pole
(attaching
hardware
F,
P.
Q &
W)(See
Fig.
C
Page
6)
1 1
6
WI 003
287
INTERLOCK,
contactor
-
normally
closed
1 1
7
000
434
FITTING,
gas
(attaching
hardware
D
&
N)
1
1
1 1
8
R6
030
987
RHEOSTAT,
WW
50
watt
25
ohm
1
1 1
1
9
SRi
035
704
RECTIFIER,
integrated
6
amp
600
volts
(attaching
hardware
C,K&T)
1
1
10
2T
038429
BLOCK,
terminal
30
amp
12
pole
(attaching
hardware
E,
M&U)
1
1
1 1
11
3T
038
602
BLOCK,
terminal
30
amp
3
pole
(attaching
hardware
E,
M&U)
1
1 1
1
12
038 620
LINK,
jumper
-
terminal
block
3 3
1 1
13
038784
STRIP,terminal
1
pole
1
1
14
Ri
030
773
RESISTOR,
WW
adj
25
watt
500
ohm
(attaching
hardware
B,L&T)
1 1
15
R7
+030
797
RESISTOR,
WW
adj
25
watt
15
ohm
(attaching
hardware
B,
L&T)
1
1
1
1
16
R5,8
+030
651
RESISTOR,
WW
fixed
25
watt
10
ohm
(attaching
hardware
B,
L&T)
2
2 2 2
17
R2-4
030 730
RESISTOR,
WW
adj
25
watt
25
ohm
5 5
17
R4
+030
730
RESISTOR,
WWadj
25
watt
25
ohm
1
1
18
605
741
BRACKET,
mounting
-
resistor
(R2)(attaching
hardware
B,
T&L)
2
2
18
605
741
BRACKET,
mounting
-
resistor
(R2-4)(attaching
hardware
B,
L&T)
10
10
19
Figure
B
PANEL,
spot
-
with
components
(See
Page
4)
1 1
20
057
357
BUSHING,
snap
15/16
ID
x
1.12
mounting
hole
3
3
3 3
21
034
510
BRACKET,
mounting
-
capacitor
(C1)(attaching
hardware
B,L&T)
1
22 Cl
031
656
CAPACITOR,
electrolytic
1000
uf
50
volts
dc
1 1
026
845
STRIP,
insulation
0.007
x
1-7/8
x
3
(Cl)
1
1
23
603
115
WEATHERSTRIPPING,
adhesive
1/8
x
3/8
(26
inches
reqd
order
by
foot)
3 ft 3
ft
3
ft.
3
ft.
24
CR
1,4
034
619
RELAY,
24
volts
ac
DPDT
(attaching
hardware
B,
L
&
T)
2
2
24
CR1
603
999
RELAY,
12
volts
dc
DPDT
(attaching
hardware
B,
L
&
T)
1
1
25
CR3
034
613
RELAY,
115
volts
ac
3PDT
(attaching
hardware
B,
L
&
T)
1 1
25
CR3
034 607
RELAY,
110
volts
dc
3PDT
(attaching
hardware
B,
L
&
T)
1
1
26
601
242
INSULATOR,
washer
-
heat
sink
4
4
27
037
798
HEAT
SINK
(attaching
hardware
A,
L
&
T)
1 1
28
D3
034 502
DIODE,
zener
12
volts
50
watt
1
1
29
C2
031
606
CAPACITOR,
paper
oil
1
uf
400
volts
dc
1
1 1
1
30
022
301
CLIP,
vinyl
3/4
dia
(attaching
hardware
B,
L
&
T)
1 1
1
31
026
837
INSULATOR,
terminal
-
nylon
5
5
5 5
32
Si
011
799
SWITCH,
toggle
3PST
15
amp
125
volts
1 1
1
1
33
025
590
MOUNT,
resilient
(attaching
hardware
C,
K
&
T)
4
4
4 4
34
003454
CHASSIS
1
1 1 1
35
NAMEPLATE
(order
by
stock,
model,
and
serial
numbers)
(attaching
hardware
Y)
1
1
1 1
36
024
366
KNOB,
pointer
1
1
3
3
OM-1084
Page
2
Quantity
Item
Dia.
Factory
Model
No.
Mkgs.
Part
No.
Description
WC-I
I
~
II
IWC.l
I/S
Il/S
Figure
A
Main
Assembly
(Contd)
37
605613
WIRE,
lead
l6ga
1
conductor300volts
(orderbyfoot)
.
.
lOft
lOft,
lOft,
lOft.
604
246
TERMINAL,
ring
tongue
0.145
stud
20-16
wire
2
2 2
2
38
601
226
INSULATOR,
vinyl
-
clamp
1 1
1
39
CLP1
601
228
CLAMP,
universal
25
amp
1 1
1
1
40
003
647
CORD
SET,
115
volts
ac
(consisting
of)
1
1
1
1
41
023 602
.
CORD
SET,
115
volts
16
ga
3
conductor
600
volts
10
ft.
.
1 1 1
1
42
605
540
.
TUBING,
glass
-
acrylic
No.
3
(order
by
foot)
1
ft.
1
ft.
1
ft.
1
ft.
600
675
.
SPLICE,
butt
16-14
wire
3 3
3
3
600
717
.
TERMINAL,
ring
tongue
1/4
stud
16-14
wire
1 1
1
1
604
246
.
TERMINAL,
ring
tongue
0.145
stud
20-16
wire
2 2
2
2
41
010916
CONNECTOR,clamp-cable3/4inch
2
2
2
2
42
012
617
HOLDER,
fuse
-
miniature
2
3
2
3
43
F1,2
*012
618
FUSE,
miniature
-
glass
sb
blo
2
amp
2
2
43
Fi-3
*012
618
FUSE,
miniature
-
glass
sb
blo
2
amp
3
3
44
034
870
RELAY
ASSEMBLY,
reed
(attaching
hardware
H,
R,
S
&
X)
1
1
1
1
45
038 886
TERMINAL,
power
output
-
red
(attaching
hardware
J,
R,
S
&
X)(See
Fig.
D
Page
6)
2
2
2
2
Ti
036
135
TRANSFORMER,
115/24
volts
ac
(attaching
hardware
B,
L&T)
1 1
010
603
NIPPLE,
brass
-
ball
&
barbed
stem
1/4
inch
1
1
1
010
606
NUT,
brass
-
swivel
5/8-18
right
hand
1
1
1
058
707
BRACKET,
adapter
-
mounting
to
unit
1 1
1
Attaching
Hardware
A
602
071
SCREW,
machine
-
steel
round
hd
6-32
x
1/4
4
4
B
602
070
SCREW,
machine
-
steel
truss
hd
6-32
x
3/8
17
24
17
24
C
602
072
SCREW,
machine
-
steel
truss
hd
6-32
x
5/8
6
7
6
7
D
602
080
SCREW,
machine
-
steel
round
hd
8-32
x
3/8
2
2 2
2
E
602 085
SCREW,
machine
-
steel
round
hd
8-32
x
3/4
4
4 4
4
F
602
109
SCREW,
machine
-
steel
round
hd
10-24
x
1/2
3
3
G
601
925
SCREW,
cap
-
steel
hex
hd
1/4-20
x
1/2
4
4 4
4
H
++601
954
SCREW,
cap
-
steel
hex
hd
1/4-20
x
3/4
3
5
3
5
J
601
955
SCREW,
cap
-
steel
hex
hd
1/4-20
x
1
4
4
4
4
K
602
199
WASHER,
lock
-
steel
external
tooth
No.
6
4
5
4
5
L
602
198
WASHER,
lock
-steel
split
No.
6
19
30
19
30
M
602
201
WASHER,
lock
-
steel
external
tooth
No.
8
4
4
4
4
N
602
200
WASHER,
lock
-
steel
split
No.
8
2
2
2
2
P
602 204
WASHER,
lock
-
steel
external
tooth
No.
10 3
3
Q
602
203
WASHER,
lock
-
steel
split
No.
10
3
3
R
++602
207
WASHER,
lock
.
steel
split
1/4
8
10
8
10
S
602
241
WASHER,
flat
-
steel
SAE
1/4
11
15
11
15
T
601
859
NUT,
steel
-
hex
6-32
23
31
23
31
U
601
860
NUT,
steel
-
hex
8-32
4
4 4
4
W
601
861
NUT,
steel
-
hex
10-24
3
3
X
++601
865
NUT,
steel
-
hex
full
1/4-20
8
10
8
10
Y
601
890
RIVET,
blind
1/8
dia
1/8
grip
4 4
4
4
*Recommended
Spare
Parts
++These
items
are
also
used
for
connecting
leads
to
various
electrical
components
in
this
unit.
BE
SURE
TO
PROVIDE
STOCK,
MODEL,
AND
SERIAL
NUMBERS
WHEN
ORDERING
REPLACEMENT
PARTS.
Page
3
Item
Dia.
Factory
No.
Mkgs.
Part
No.
Description
Quantity
Model
WC-Il/SI
WC-IlI/S
Figure
B
PANEL,
Spot
-
With
Components
(See
Fig.
A
Page
2.Item
19)
Figure
B
Panel,
Spot
-
With
Components
BE
SURE
TO
PROVIDE
STOCK,
MODEL,
AND
SERIAL
NUMBERS
WHEN
ORDERING
REPLACEMENT
PARTS.
I
61
003
816
CIRCUIT
CARD
ASSEMBLY,
with
switch
(attaching
hardware
A
&
H)
(See
Fig.
Bi
Page
5)
1
1
62
073
756
SPACER,
hex
1/4
x
5/8
x
6-32
thread
(attaching
hardware
A
&
H)
4
4
63
038
839
BLOCK,
terminal
20
amp
5
pole
(attaching
hardware
E,
H
&
L)
1
1
64
RiO
030
582
RESISTOR,
WW
fixed
25
watt
5
ohm
(attaching
hardware
D,
H
&
L)
.
. .
.
1
65
037
798
HEAT
SINK
(attaching
hardware
B,
H
&
L)
1
66
601
242
INSULATOR,
washer
4
67
010
146
CLAMP,
5/8
dia
(attaching
hardware
C,
H,
J
&
L)
1
68
C3
031
606
CAPACITOR,paper
oil
1
uf400voltsdc
1
69
000
045
HARDWARE,
mounting
(R9)(attaching
hardware
F,
K
&
M)
1
70
R9
030965
RESISTOR,WW
fixed
l00watt
100
ohm
1
71
D4
037
790
DIODE,
zener
24
volts
50
watts
1
72
019
663
MOUNT,
neoprene
(attaching
hardware
B
&
G)
2
2
73
058
714
BRACKET,
mounting
-
components
1
1
Attaching
Hardware
.
A
602
068
SCREW,
machine
-
steel
round
hd
6-32
x
3/8
5 6
B
602
071
SCREW,
machine
-
steel
round
hd
6-32
x
1/2
2
5
C
604
850
SCREW,
machine
-
steel
round
hd
6-32
x
3/4
1
D
++602
070
SCREW,
machine
-
steel
truss
hd
6-32
x
3/8
2
E
602
072
SCREW,
machine
-
steel
truss
hd
6-32
x
5/8
2
2
F
601
925
SCREW,
cap
-
steel
hex
hd
1/4-20
x
1/2
1
G
602
199
WASHER,
lock
-
steel
external
tooth
No.
6
2
2
H
602
198
WASHER,
lock
-
steel
split
No.
6
8
14
J
603
586
WASHER,
flat
-
steel
SAE
No.
6
1
K
602
207
WASHER,
lock
-
steel
split
1/4
1
L
.
601
859
NUT,
steel
-
hex
6-32
2
8
M
601
865
/
NUT,
steel
-
hex
full
1/4-20
1
62
64
Fig
B161
73
0
TC-004
588
OM-1084
Page
4
**Circuit
Card
Assembly
is
available
on
an
exchange
basis.
Contact
Factory
Service
Department
for
details.
BE
SURE
TO
PROVIDE
STOCK,
MODEL,
AND
SERIAL
NUMBERS
WHEN
ORDERING
REPLACEMENT
PARTS.
CERTAIN
NON
CRITICAL
PARTS
LISTED
BELOW
MAY
DIFFER
FROM
THOSE
USED
ON
THE
CIR
CUIT
CARD
IN
YOUR
UNIT,
BUT
WILL
SERVE
AS
SUITABLE
REPLACEMENTS.
Dia.
Factory
Mkgs.
Part
No.
Description
Quantity
Figure
B1
003
816
Circuit
Card
Assembly,
With
Switch
(See
Fig.
A
Page
4
Item
61)
S2
011
929
SWITCH,
toggle
SPDT
15
amp
125
volts
1
**o58
709
CIRCUIT
CARD
ASSEMBLY
(consisting
of)
C51
.56
031
633
.
CAPACITOR,
electrolytic
80
uf
25
volts
dc
C52,53
031
643
.
CAPACITOR,
ceramic
0.01 uf
500
volts
dc
C54
032
943
.
CAPACITOR,
tantalum
4.7
uf
35
volts
dc
C54
032
820
.
CAPACITOR,
electrolytic
2.2
uf
35
volts
dc
C55
032
943
.
CAPACITOR,
tantalum
4.7 uf
35
volts
dc
CR51
032
944
.
RELAY,
12
volts
dc
DPDT
CR52
032
945
032
946
.
RELAY,
24
volts
dc
DPDT
.
SOCKET,
relay
D51-54
026202
.
DIODE,
1
ampere
400
volts
straight
polarity
D55
037
243
.
DIODE,
zener
18
volts
1
watt
Q51,52
022135
.THYRISTOR,4amp200volts
Q53,54
037
289
.
TRANSISTOR,
uni
junction
5OMA
35
volts
R51
030
055
.
RESISTOR,
carbon
2
watt
10
ohm
R52,54,65
030
024
.
RESISTOR,
carbon
0.5
watt
1000
ohm
R53
030
630
.
RESISTOR,
WW
fixed
11
watt
100
ohm
R55,57
030
937
.
RESISTOR,
carbon
0.5
watt
10
ohm
R56
030709
.
RESISTOR,carbon
1
watt
150
ohm
R58
030
004
.
RESISTOR,
carbon
0.5
watt
10K
ohm
R59
030738
.
POTENTIOMETER,
carbon
1
turn
2watt
500K
ohm
R60
030
145
.
POTENTIOMETER,
carbon
1
turn
0.25
watt
2000
ohm
R61,64
030
025
.
RESISTOR,
carbon
0.5
watt
100
ohm
R62
030
131
.
POTENTIOMETER,
carbon
1
turn
2
watt
50K
ohm
R63
030853
.
RESISTOR,carbon0.Swatt2200ohm
R66
030
024
.
RESISTOR,
carbon
0.5
watt
1000
ohm
R67,68
030 025
.
RESISTOR,
carbon
0.5
watt
100
ohm
R69
032
819
.
RESISTOR,
carbon
0.5
watt
390K
ohm
S52
011
770
.
SWITCH,
toggle
SPDT
5
amp
125
volts
2
2
1
2
4
1
2
2
3
2
1
1
2
1
2
1
TA-058
704-A
COMPONENTS
TO
BE
REPLACED
BY
QUALIFIED
PERSONNEL
ONLY
Figure
Bi
Circuit
Card
Assembly,
With
Switch
Page
5
Item
No.
91
92
93
94
95
003
286
COIL,
contactor
125
volts
dc
*o349u
KIT,contact
points
601
839
038
913
038
129
038
885
038
912
*
Recommended
Spare
Parts
BE
SURE
TO
PROVIDE
STOCK,
MODEL,
AND
SERIAL
NUMBERS
WHEN
ORDERING
REPLACEMENT
PARTS.
1~
Item
No.
Factory
Part
No.
81
82
Figure
C
003
288
Contactor
(See
Fig.
A
Page
2
Item
5)
Description
Quantity
4
TB-034
909
94,
93
Figure
C
Contactor
Factory
Part
No.
TA-038
878-A
Figure
D
Terminal,
Power
Output
Description
Quantity
Figure
D
038
886
Terminal,
Power
Output
(See
Fig.
A
Page
3
Item
45)
NUT,
brass
-
hex
full
1/2-13
NUT,
brass-
hex
special
1/2-13
BUS
BAR
TERMINAL
BOARD,
red
BOLT,
shoulder
.
round
hd
sq
neck
1/2-13
x
1-11/16
OM-1084
Page
6
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Miller WC-3/S Owner's manual
- Category
- Welding System
- Type
- Owner's manual
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