Specifications

3
-3.
COOLANT
REQUIREMENTS
receptacle.
A.
Coolant-In
Hose
The
coolant-in
hose
has
a
5/8-18
male, notched,
left-
hand
fitting
(Figure
3-1).
To install
coolant
hose,
connect
coolant-in
hose
fitting
to
coolant
supply
outlet
(Figure
3-4).
B.
Power
Cable/Coolant-Out
Hose
The
power
cable/coolant-out
hose
has
a
7/8-14
male,
notched,
left-hand
fitting
(Figure
3-1).
Where
freezing
conditions
may
be
encountered,
mix
coolant
according
to
the
manufacturers
recommenda
tions for the
ambient
temperature
encountered.
CAUTION
_______
INCORRECT COOLANT
LEVEL
can
damage
cooant
system
and
torch.

Maintain
correct
coolant
level
at
all times.
This
torch
is
rated
at
a
1
qt./min
(0.94
I/mm)
coolant
flow
rate.
Changes
in
flow
rate
may
effect
operating
TA-120
998
temperature
of torch.
Maintain
proper
flow
rate
at
all
times.
3
-4.
GAS HOSE
CONNECTIONS
(Figures
3-1
and
3-4)
-
The
gas
hose
has
a
5/8-18
male,
right-hand
fit
ting (Figure
3-1).
To
install
gas
hose,
connect
gas
hose
fitting
to
gas
valve
outlet.
Connect
gas
hose
(extra
hose
not
supplied)
from
gas
valve
inlet
to
regulator/flowmeter (Figure
3-4).
If
power
source
is
equipped
with
a
gas
valve,
use
valve
to
control
gas
postflow
time,
or
the
length
of time
gas
flows
after
the
arc
is
extinguished.
Insufficient
gas
postf
low
time
results
in
an
oxidized
(black)
electrode
surface.
If
an
oxidized
electrode
were
used,
the
black
surface
would
contaminate
the
weld
and
cause
poor
arc
direction.
3
-5.
POWER
CABLE
ADAPTER
CONNECTION
(Figures
3-1
and
3-4)
-
The
power
cable
adapter
has
both
a
5/8-18
and
7/8-14
female,
notched,
left-hand
fitting (Figure
3-1).
Install
power
cable
adapter
as
follows
(Figure
3-4):
WARNING
_________
ELECTRIC
SHOCK
can
kill.

Do
not
touch live
electrical
parts.

Shut
down
welding
power
source
and
disconnect
input
power
employing
lockout/tagging
pro
cedures
before
installing
torch.
Lockout/tagging
procedures
consist
of
padlocking
line
disconnect
switch
in
open
position,
removing
fuses
from
fuse
box,
or
shutting
off and
red-tagging
circuit
breaker
or
other
disconnecting
device.
1.
Install
power
cable/coolant-out
hose
fitting
into
power
cable
adapter
(see
Section
3-2B).
2.
Connect
power
cable
adapter
to
weld
output
ter
minal.
To
install
power
cable/coolant-out
hose,
connect
power
cable/coolant-out
fitting
into
power
cable
adapter.
Connect coolant hose
(extra
hose
not
sup
plied)
from
power
cable
adapter
to
coolant
return
fitting
(Figure
3-4).
Figure
3
-
2. Clockwise
Head
Adjustment
TA-120
998
Figure
3
-
3.
Counterclockwise
Head
Adjustment
3
-2.
COOLANT
HOSES
AND
CONNECTIONS
(Figures
3-1 and
3-4)
CAUTION
IMPORTANT:
_______
As
a
general
rule,
allow
10
seconds
gas
posiflow
time
per
100
amperes
of
weld
current
before
closing
valve.
_________
OVERHEATING
Gas
Tungsten
Arc
Welding
(GTAW)
torch
can
damage
torch.

If
using
recirculating
coolant
system,
do
not
make
connections
from
the
coolant
system
to water
valve;
instead,
make
connections
directly
from
the
coolant
system
to
torch hoses.

If
receptacle
is
available
on
power
source,
connect
coolant
supply/pump
power
cord
to
power
source
OM-1568
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5