BossWeld TREO 175, User Manual

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3. Operation instruction under LIFT TIG mode
a. When welding stops, press the (STICK/LIFT TIG/MIG switch key) the LIFT TIG indicator lights
up, and it turns into LIFT TIG mode. LIFT TIG means the tungsten contacts the work piece first,
then press the torch switch, the arc is ignited by lifting the torch.
b. Under LIFT TIG mode, press (VRD/2T/4T switch key) to choose the welding mode:
•
2T NORMAL lighting up means 2 step control way: open the shielded gas, press the
torch switch which starts the main circuit, lift up the arc, the welding current increases
till to a steady-state value.
•
4T LATCH means 4 step control way: open the shielded gas, press the torch switch for
the first time and start the main circuit, lift up the arc and ignite it; then release the
torch switch, the machine outputs steady current. Press the torch switch for the second
time, the welding current attenuates until to crater value and keep on, then release the
torch switch again, the arc quenches soon and the welding stops.
Chart 5:
The preset current under LIFT TIG mode
c. (Multifunctional data display) shows the preset current “080A”, its unit is ampere (A).
d. Adjusting the (Multifunctional data adjusting knob) can change the welding current during welding
process, and display in (multifunctional data display). The welding current range is 10A-175A.
e. Three seconds later after setting the welding parameters, the (multifunctional data display) would
flashes for one time, which means the data has been saved. Moreover, the panel would display
these data when restart the machine next time if the parameters keep unchanged.
f. The panel displays as Chart 6 when perform welding, which means the welding voltage is 17.2V,
and the preset current is 80A.
g. Releasing the torch switch and stopping welding, the panel displays as Chart 7. “HOLD” flashes
for 3 seconds and quenched, which means the welding stops. 2 seconds later, (multifunctional
data display) redisplays the preset current.
Note: The machine adopts touched ignition way when perform welding under TIG mode. Firstly make
sure the tungsten contacts the work piece completely, then press the torch switch, lifting up the torch to
ignite arc successfully.