Setup For Tig (Gtaw) Welding - Thermal Arc 202 AC/DC Operating Manual

INSTALLATION/SETUP

3.13 Setup for TIG (GTAW) Welding

A. Select Lift TIG or HF TIG mode with the process selection control (refer to Section 3.08.7 for further
information).
B. Connect the TIG Torch to the negative welding terminal (-). Welding current flows from the power source
via heavy duty bayonet type terminals. 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 heavy duty bayonet type terminals. It is essential, however, that the male plug is inserted and turned
securely to achieve a sound electrical connection.
Loose welding terminal connections can cause overheating and result in the male plug being fused
in the bayonet terminal.
D. Connect the TIG torch trigger switch via the 8 pin socket located on the front of the power source as shown
below. The TIG torch will require a trigger switch to operate in Lift TIG or HF TIG Mode.
If the TIG torch has a remote TIG torch current control fitted then it will require to be connected to
the 8 pin socket. (Refer to section 3.08.2 Remote Control Socket for further information).
E. Fit the welding grade shielding gas regulator/flowmeter to the shielding gas cylinder (refer to Section 3.12)
then connect the shielding gas hose from the regulator/flowmeter outlet gas INLET on the rear of the 202
AC/DC Power Source. Connect the gas hose from the TIG torch to the gas OUTLET on the front of the 202
AC/DC Power Source.
Before connecting the work clamp to the work make sure the mains power supply is switched off.
Secure the welding grade shielding gas cylinder in an upright position by chaining it to a suitable
stationary support to prevent falling or tipping.
INSTALLATION, OPERATION AND SETUP
CAUTION
NOTE
!
3-16
202 AC/DC INVERTER
WARNING
Manual 0-5239