Tweco 170Ti Transtig - Manual (Page 29)

TRANSTIG 170Ti
Manual 0-5279 3-11 INSTALLATION, OPERATION AND SETUP
When the trigger is pressed, the VRD voltage is activated and the user can start welding as normal. For
extra safety, if welding has not commenced within 3 seconds after the trigger is pressed, the Power Source
will turn off the VRD, and the trigger must be released & pressed again to start welding.
If the trigger is released during welding, all welding power is shut off within the time limits of normal VRD
operation.
A special STICK electrode holder is required for use with a Power Source fitted with a Trigger Switch
function. This electrode holder has a trigger switch attached to it, and a control cable that connects to the
remote control socket of the Power Source. The 170Ti plant comes standard with one of these special
electrode holders fitted with an integrated trigger switch.
The Dead Man Switch function is active in both 2T and 4T STICK mode.
Welding with the Dead Man Switch is as follows:
2T MODE
1. Press the trigger on the electrode holder.
2. The Power Source will now output the VRD volts and the VRD ON led will be lit.
3. Touch the Stick Electrode to the work and commence welding as usual.
4. Release the trigger to cease welding.
There will be 0V on the Power Source welding terminals and both VRD lights will be off.
4T MODE
1. Press the trigger on the electrode holder.
2. The Power Source will now output the VRD volts and the VRD ON led will be lit.
3. Touch the Stick Electrode to the work and commence welding as usual.
4. Release the trigger and continue welding.
5. Press and release the trigger to cease welding.
A-11708
There will be 0V on the Power Source welding terminals and both VRD lights will be off.