12X3 MIG Welder©Kemppi Oy 2018 1814OPERATING MANUAL4.2 Controlling the welding system4.2.1 Setup panelUse the Setup panel on the X3 Power Source to changethe settings of your welding system.1 Gas test buttonPress to test the shielding gas flow.X3 MIGWelder1452362 Gas select buttonPress to select either CO₂ or mixedshielding gas (MAG).3 Press to select between 2T and 4T guntrigger modes.4 Crater fill buttonPress to select the Crater fill mode ONor OFF.5 Wire feed speed adjustment knobTurn to set the wire feed speed value forthe Crater fill mode.6 Voltage adjustment knobTurn to set the welding voltage value forthe Crater fill mode.4.2.2 Starting the power sourceTo start the power source, turn the main switch to posi-tion ‘I’. Initially, the firmware version number is displayedin the LCD display. After that, the firmware number is re-placed with the parameter display, and the machine isready for setup.4.2.3 LCD displayThe X3 MIG Power Source is equipped with an LCD display. Welding parameter settingsare made through the X3 Wire Feeder control panel for wire feed speed (A) and voltage(V). During welding the display always shows the welding current (A) used.The average welding values remain on display for 10 seconds after you stop welding.The upper part of the display shows wire feed speed, the selected welding voltage andgas type selection. The lower part of display shows the Crater fill values.4.2.4 LED indicatorsThere are two LED indicator lights on the top of the control panel.1 21. The ON light indicates that the power source is turned on.2. The second light indicates that the machine is over heated.The machine stops automatically when it reaches its maximum operating tempera-ture. If the heat indicator led is on, the machine has exceeded its normal maximum operat-ing temperature. Stop welding and wait until the led turns off. The machine is then readyfor welding to continue.