ESAB ET 186i AC/DC
INSTALLATION, OPERATION AND SETUP 3-18 Manual 0-5425
3.14 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.
!
CAUTION
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.
NOTE!
See Appendix A3 for TIG torch contents and trigger switch options.
NOTE!
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 to the gas INLET on the rear of the ET 186i AC/DC Power Source. Connect
the gas hose from the TIG torch to the gas OUTLET on the front of the ET 186i AC/DC Power Source.
!
WARNING
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 suit-
able stationary support to prevent falling or tipping.
