Tweco 170Pi Transtig - Manual (Page 30)

TRANSTIG 170Pi
INSTALLATION, OPERATION AND SETUP 3-12 Manual 0-5241
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4T Latch Mode
This mode of welding is mainly used for long welding runs to reduce operator fatigue. In this mode the
operator can press and release the torch trigger and the output will remain active. To deactivate the power
source, the trigger switch must again be depressed and released, thus eliminating the need for the operator
to hold the torch trigger.
Note that when operating in GTAW (TIG mode), the power source will remain activated until the selected
downslope time has elapsed.
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10. Process Selection Control
The process selection control is used to select the desired welding mode. Three modes are available, GTAW
(HF TIG), GTAW (Lift TIG) and (MMAW (Stick) modes. Refer to section 3.08 for GTAW (TIG) set-up details
or section 3.09 for MMAW (stick) set-up details.