Tweco 141i Fabricator - Manual (Page 56)

Fabricator 141i
INSTALLATION, OPERATION AND SETUP 3-26 Manual 0-5145
3.22 Setup for LIFT TIG (GTAW) Welding
A. Select LIFT TIG mode with the process selection control (refer to Section 3.10.12 for further information).
B. Using the supplied 50mm to 25mm DINSE adapter, connect the TIG torch to the negative welding terminal
(-). Welding current flows from the Power Source via Dinse style connectors. It is essential, however, that the
male plug is inserted and turned securely to achieve a sound electrical connection.
C. Connect the work lead to the positive welding terminal (+). Welding current flows from the Power Source via
Dinse style terminals. It is essential, however, that the male plug is inserted and turned securely to achieve a
sound electrical connection.
D. Connect the TIG torch trigger switch via the 8 pin socket located on the front of the Power Source. The TIG
torch will require a trigger switch to weld in LIFT TIG Mode.
NOTE
A Tweco 17V TIG torch with an 8 pin plug must be used to turn the weld current on/off via the TIG torch
trigger switch to TIG weld OR a Tweco Foot Control with an 8 pin plug must be used to turn the weld
current on/off as well as providing remote control of the weld current. Please refer to "2.10 Options
and Accessories".
E. Fit the flowmeter/ regulator to the shielding gas cylinder (refer to Section 3.06) then connect the shielding
gas hose from the TIG torch to the flowmeter/ regulator outlet. Note that the TIG torch shielding gas hose is
connected directly to the flowmeter/ regulator. The Power Source is not fitted with a shielding gas solenoid to
control the gas flow in LIFT TIG mode therefore the TIG torch will require a gas valve.
!
WARNING
Before connecting the work clamp to the work piece, make sure you have ceased feeding wire so
premature arcing will not occur.
Secure the shielding gas cylinder in an upright position by chaining it to a stationary support to prevent
falling or tipping.
CAUTION
Remove any packaging material prior to use. Do not block the air vents at the front or rear of the
Welding Power Source.
Loose welding terminal connections can cause overheating and result in the male plug being fused in
the terminal.
F. Switch the LOCAL/REMOTE switch inside the
wire feed compartment to LOCAL to use the
Power Sources Amperage control or REMOTE
for remote amperage using a Foot Control.