5 OPERATION
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© ESAB AB 2021
5.13 Setup for LIFT TIG (L-GTAW) welding
(only for Firepower MST-200)
1) Select LIFT TIG mode with the process selection control, see section 5.4.1 " Firepower MST-
200"
2) Connect the TIG torch to the negative welding terminal (-). Welding current flows from the
power source via dinse type terminals. It is essential, however, that the male plug is inserted
and turned securely to achieve a sound electrical connection.
3) Connect the work lead to the positive welding terminal (+). Welding current flows from the
power source via dinse type terminals. It is essential, however, that the male plug is inserted
and turned securely to achieve a sound electrical connection.
4) Connect the TIG torch trigger switch/ remote foot control (RFC) via the 8 pin socket located on
the front of the power source. The TIG torch will require a trigger switch/foot control to operate
in LIFT TIG mode.
NOTE!
A 26 V 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 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.
5) Fit the welding grade shielding gas regulator/flowmeter to the shielding gas cylinder (see
"Firepower regulator" section) then connect the shielding gas hose from the TIG torch to the
regulator/ flowmeter outlet. Note that the TIG torch shielding gas hose is connected directly to
the regulator/ flowmeter. 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 workpiece and inserting the electrode in
the TIG torch make sure the electricity supply is switched off.
Secure the welding grade 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.
