Tweco 170Ti Transtig - Manual (Page 28)

TRANSTIG 170Ti
INSTALLATION, OPERATION AND SETUP 3-10 Manual 0-5279
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.
A-11707
STICK Dead Man Switch Mode
A special trigger mode called “Dead Man Switch” mode is available on the 170Ti when welding with STICK
electrodes. In this mode, there will be no output voltage at all from the Power Source until the trigger is
pressed. This provides the greatest level of safety for the operator, and is mandatory on some work sites.
While the Dead Man Switch function greatly increases operator safety, standard welding safety procedures
should still be followed.