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valve outlet.
Connect
extra
gas hose
(not supplied)
from
gas
valve inlet
to
regulator/flowmeter (see Figure 4-3).
B.
High-Performance
Cable
Assembly
The
high-performance
cable
assembly
has
separate
power cable and gas hose. The gas hose has
a
5/8-18
male
right-hand
fitting
(see Figure 4-1).
If torch includes
a
gas
valve,
connect
gas hose
fitting
to
regulator/flowmeter
(extra
hose
not
supplied,
see
Figure
4-2).
If torch is without
gas
valve,
connect
gas
hose
fitting
to
gas valve outlet.
Connect gas
hose
(extra
hose
not
supplied)
from gas valve inlet
to
regulator/flowmeter
(see Figure 4-3).
C.
Torch
Gas Valve
Operation (If Applicable)
The gas valve allows gas flow control
at the
torch.
A
one-
half
turn
counterclockwise
opens the gas
valve,
and
a
one-half
turn
clockwise
closes the valve.
The gas valve allows control of gas
postflow
time,
or
the
length
of time gas
flows after
the
arc
is
extinguished.
In
sufficient gas
postflow
results in
an
oxidized
(black)
elec
trode
surface.
If
an
oxidized electrode
were
used,
the
black surface would contaminate the weld and
cause
poor
arc
direction.
IMPORTANT: As
a
general
rule,
allow 10 seconds of
gas
postflow
time per 100 amperes of weld
current
be
fore
closing
valve.
Torch
High-Flex
Cable
Assembly
4-3.
POWER CABLE CONNECTION
(Figures
4-1
Thru
4-3)
a
WARNING: ELECTRIC SHOCK
can
kill.
Do
not
touch live electrical
parts.
Shut
down
welding
power
source,
and dis
connect
input
power
employing lockout/tag
ging procedures
before
installing
torch.
Lockout/tagging
procedures
consist of
pad
locking
line disconnect switch in open
position,
removing
fuses
from
fuse
box,
or
shutting
off
and
red-tagging
circuit breaker
or
other discon
necting
device.
A.
High-Flex
Cable
Assembly
The power cable is
part
of the
high-flex
cable
assembly.
For connection of both power cable and gas hose
to
power cable
adapter,
see
Section 4-2A.
Connect power cable
adapter
to
weld
output
terminal
(see Figures
4-2
and
4-3).
B.
High-Performance
Cable
Assembly
The
high-performance
cable
assembly
has
separate
power cable and gas hose.
To install power
cable,
connect
power cable
connector to
weld
output
terminal
(see Figures
4-2 and
4-3).
High-Performance
Cable
Assembly
Ret.
SA-120
824
Figure
4-2.
GTAW Torch
Connection
Diagram
For Models With Gas Valve
Torch
7-
Work
Clamp
High-Flex
Cable
Assembly
High-Performance
Cable
Assembly
Figure
4-3.
GTAW Torch Connection
Diagram
For Models Without Gas Valve
7
Power
Cable
Work
Clamp
Adapter
Gas
Cylinder
Power
Cable
Work
Clamp
Connector
Gas
Cylinder
Regulator/
Flowmeter
Power Cable
Adapter
Gas Valve
Gas
Cylinder
Power
Cable
Work
Clamp
Connector
Gas Valve
Gas
Cylinder
Ret. SA.1
20824
OM-1561
Page
5
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