Tweco 201 ts Thermal Arc - Manual (Page 26)

THERMAL ARC 161 STL, 201 TS INSTALLATION
Installation 3-8 Manual 0-5203
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 (work) clamp cable to positive
output terminal. It is essential that the male plug is
inserted and turned fully clockwise until connector
locks in place to achieve reliable electrical connection.
3. Connect the TIG torch as follows:
a) Place the power cable into the negative output
terminal. It is essential that the male plug is
inserted and turned fully clockwise until connector
locks in place to achieve reliable electrical
connection;
b) Place the 8 pin plug into the 8 pin socket. To make
connections, align keyway, insert plug, and rotate
threaded collar fully clockwise.
c) Place the TIG torch gas hose to the gas outlet
and tighten with a wrench. Caution: DO NOT over
tighten.
4. 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.
5. Install the regulator (for details of VICTOR regulator,
please refer to 3.08 ) and tighten with a wrench.
6. Connect one end of the supplied gas hose to the outlet
of the Argon regulator and tighten with a wrench.
Caution: DO NOT over tighten.
7. Connect the other end of the supplied gas hose to the
gas inlet fitting on the rear panel of the welder and
tighten with a wrench. Caution: DO NOT over tighten.
8. Open the Argon Cylinder Valve to the fully open
position.
9. Connect the ground (work) clamp to your work piece.
10. Set the DOWN SLOPE control knob to the desire weld
current ramp down time. Refer to Section 4.01.
12. The tungsten must be ground to a blunt point in order
to achieve optimum welding results. It is critical to
grind the tungsten electrode in the direction the
grinding wheel is turning.
13. Install the tungsten with approximately 1/8” to ¼”
sticking out from the gas cup, ensuring you have
correct sized collet.
14. Tighten the back cap then open the valve on the torch.
15. Plug the power cable into the appropriate outlet, and
turn the switch to the “ON” position. The power L.E.D.
light should illuminate. Set the “Process Selection
Switch” to LIFT TIG
16. You are now ready to begin TIG Welding.