Tweco 161 S UK - Manual (Page 22)

THERMAL ARC 161 S INSTALLATION
Installation 3-6 3-6 Manual 0-5183
3.07 LIFT TIG (GTAW) Setup
Figure 3-3: Setup for LIFT TIG (GTAW) Welding
Set Process Selection
Switch to LIFT TIG (GTAW).
Positive Output
Terminal
(Dinse™ 50)
Negative
Output
Terminal
(Dinse™ 50)
Art #: A-09915
Set Welding Current
as specified by the
Electrode Manufacturer.
Secure the gas cylinder in an
upright position by chaining it
to a stationary support to prevent
falling or tipping.
LIFT TIG (GTAW) Sequence of Operation
CAUTION
Before any welding is to begin, be sure to wear all
appropriate and recommended safety equipment.
1. Switch the ON/OFF Switch (located on the rear panel)
to OFF.
2. Connect the ground clamp cable to positive output
terminal, and the TIG torch cable to the negative
output terminal.
NOTE
This set up is known as Straight Polarity or DC
Electrode Negative. This is commonly used for DC
TIG welding on most materials such as steel and
stainless steel.
3. Using a secured Argon cylinder, slowly crack open
then close the cylinder valve while standing off to
the side of the valve. This will remove any debris that
may be around the valve & regulator seat area.
4. Install the regulator as per the manufacturers
instructions.
5. Connect the gas hose to the outlet of the Argon
regulator, and tighten with a spanner.
6. Be sure the gas valve on the torch is closed, and
slowly open the Argon Cylinder Valve to the fully
open position.
7. Connect the ground clamp to your workpiece.
8. Plug the power cable into the appropriate outlet,
and turn the switch to the “ON” position. The power
L.E.D. light should illuminate.