... .1.3 Connect the power supply, turn on the power switch, press the mode switch key-press (No. ... heat operation, releases start button (or feet step switch) to stop heating. After heated, relax the ... 3.3 Connect the power supply, turn on the power switch, through the mode switch key-press button ... welding after release start button (or feet step switch). Relax electrode arms when finish welding, dismantle ...