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3-4. PURGE BUTTON
(Figure
3-1)
I Placing
the POWER switch in the C
~ition
does
not
remove
power
from all of the
control/feeders
internal
circuitry. Completely
terminate all electrical
power
to
the
control/feeder
by removing
the
115
volts
ac
plug
from its
power
supply,
and
ensure
that
machinery
lockout
procedures
have been
employed
on
the
welding
power
sources
input
line
(see
Instruc
tion Manual
on
welding
power
source)
before attempt-
ing
any
inspection
or
work
inside the
unit
3- 2. WIRE SPEED CONTROL
(Figure
3-1)
The WIRE SPEED control
provides
a
means
of
determining
the
rate
at
which
welding
wire will be fed into the weld.
Rotating
the WIRE SPEED control in
a
clockwise direction
will
increase
the
rate
of the wire feed. When the WIRE
SPEED control is
set at
0,
wire will feed
at
the slowest
speed;
when
set
at
100,
the wire will feed
at
the fastest
speed.
The
scale
which
surrounds the WIRE
SPEED control
is
calibrated
in
increments
of
ten
ranging
from
0
to
100
percent.
Due
to
this
percentage
calibration,
it should be
noted that
if this scale is
being
used
to
select
a
wire feed
speed setting, only
a
percentage of the range
in
use
is
being
selected
and
not
an
actual wire feed
speed
rate.
3-3. REMOTE
CONTROL
RECEPTACLE
&
SWITCH
(Figure
3-1)
The wire
speed
may
also be
adjusted by
a
Remote Control
(optional).
Connect
the
Remote
Control
plug
to
the
REMOTE CONTROL
receptacle
on
the front
panel
of the
control/feeder,
and
position
the
REMOTE CONTROL
switch
on
the
control/feeder
and
on
the
Remote Control unit
to
the
REMOTE
position.
If it is desired
to return
the
control of the
wire
speed
to
the
control/feeder,
place
the
REMOTE
CONTROL
switch
on
either
the
control/feeder
or
the
Remote Control
to
the
STANDARD
position.
The
PURGE
button,
located
on
the
front
panel
of
the
control/feeder,
is
a
momentary
contact
switch. This switch
will
energize
the gas solenoid and purge the
shielding
gas line
of the gun. The PURGE button also allows the
shielding
gas
regulator
to
be
adjusted
without
energizing
the
welding
circuit.
3
-
5.
INCH
SWITCH
(Figure
3-1)
The
INCH
switch,
located
on
the
front
panel
of
the
control/feeder,
is
a
spring-loaded
toggle
switch.
When
actuated it
completes
the
circuit
to
the
motor
without
having
to
depress
the gun
trigger
switch. This switch will
permit
inching
of the wire
at
whatever
setting
the
WIRE SPEED
control is at, without
energizing
the
welding
cirucit
or
the
shielding
gas valve.
3- 6. START SWITCH
(Figure 3-1)
The START switch
provides
the
capability
of
being
able
to
select either
a
slow wire feed
speed
for
1/2
second
at
the
beginning
of wire
feed,
or
the wire feed
speed
at
the
rate
set
on
the WIRE SPEED control. The SLOW
position
of the
START switch
will
provide
the
1/2
second of slow wire
feed,
and the FAST
position
will
provide
wire feed
at
the
rate set
on
the
WIRE SPEED control.
3- 7. RETRACT-FEED SWITCH
(Figure
3-1)
The
RETRACT-FEED switch
will determine whether the
wire
will feed
out
of the gun
or
back into the gun when the
gun
switch is closed. The RETRACT
position
will
cause
the
wire
to
go back into the gun, and the FEED
position
will
cause
the wire
to
feed
out
of the gun.
3-8.
RESET CIRCUIT BREAKER
(Figure
3-1)
A
circuit
breaker,
located
on
the
upper
portion
of
the
control/feeder
front
panel, provides protection
to
the
con
trol/feeder
motor.
In the
event
the
motor
should be
placed
in
an
overload
condition,
the breaker would
trip
and
suspend
elI
output. Should this breaker
trip,
the RESET button would
have
to
be
manually depressed
to
reset
the circuit breaker.
1.
Make all connections
as
instructed in Section 2.
2.
Place
the
RETRACT-FEED
switch
in
the
FEED
position.
3.
Place the
START
switch in the desired
position.
4.
Rotate
the
WIRE
SPEED
control
to
the desired
setting.
5.
If
a
Remote Wire
Speed
Control
is
not
to
be
used,
place
the
REMOTE
CONTROL
switch
in
the
STANDARD
position.
If
a
Remote Wire
Speed
Con
trol is
to
be
used, place
both the REMOTE CONTROL
switch
on
the Remote Wire
Speed
Control and
on
the
control/feeder
in the
REMOTE
position.
to
welding,
it is
impera!
that p roper p
ro
tect
ive
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.
6.
Place the
POWER switch
on
the
control/feeder
in the
ON
position.
7.
Depress
the PURGE button for
one
minute.
8.
Energize
the
welding
power
source.
9.
Hold the
tip
of the gun
approximately
1/2 inch from~
the
workpiece.
10.
Depress
the
trigger
on
the
gun
handle. Gas and
water
will
start
to
flow,
and
wire will
start
to
feed
if
drive
roll
pressure
is
properly adjusted
to
prevent
slippage.
If
wire
slippage
is
noticed, tighten
the drive
roll
pressure
adjustment wing
nuts
1/2
turn
clockwise.
Repeat
until
slippage
stops. Do
not
tighten wing
nuts
too
much.
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.
4-2. SHUTTING DOWN
1.
Turn off the
shielding
gas and
water
at
the
source.
2.
Place the POWER switch
on
the
control/feeder
in the
OFF
position,
and
remove
the 115 Volts AC
plug
from
the
source.
3.
Turn off all associated
equipment.
~ding
is
performed
in
a
confined~
failure
to
turn
off the
shielding
gas
supply
could result
in
a
buildup
of gas
fumes, thereby
endangering
personnel
reentering
the
welding
area.
I
SECTION
4
-
SEQUENCE
OF OPERATION
4-
1. GAS METAL-ARC WELDING
(GMAW)
I
OM-t234Page5
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