OPERATION | ||
|
|
|
DIP Switch 3: 2 Step Restart Enable
This controls the 2 Step Restart function. When the switch is ON the 2 Step Restart function is enabled.
1.Press and hold the TIG torch trigger to start the sequence. The machine will open the gas valve to start the flow of the shielding gas. After the preflow time, the output of the machine is turned ON. At this time the arc is started according to the selected welding mode (Lift TIG or HF TIG). After the arc is started the output current will be increased (ups- lope) to the welding current.
2.Release the TIG torch trigger to stop welding. The machine will now decrease the output current at a controlled rate (downslope), until the Start/Crater
current is reached and the output of the machine is turned OFF. After the arc is turned OFF, the gas valve will remain open for the duration of the post-
flow time. | FIGURE b.4 |
As shown in figure B.5, it is also possible to press and hold the TIG torch trigger a second time during downslope to end the downslope time and maintain the output current at the Start/Crater current. When the TIG torch trigger is released the output will turn OFF and the postflow time will start.
FIGURE b.5
2-Step Restart Enabled (DIP Switch 3 = ON)
Same as step 1.
Same as step 2.
As shown in figure B.6, it is possible to press and hold the TIG torch trigger a second time during downslope to restart. After the trigger is pressed the output cur- rent will increase to the welding current, like in step 1. When the main part of the weld is complete go to the beginning of step 2. FIGURE b.6
