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Selection of MIG operating procedure (6)
MIG 2T: MIG welding with two-sequence procedure of welding gun start switch
1. switch pressed: welding starts
2. switch released: welding stops
MIG 4T: MIG welding with four-sequence procedure of welding gun start switch
1. switch pressed: shielding gas flow starts
2. switch released: welding starts
3. switch pressed: welding stops
4. switch released: shielding gas flow stops
Adjustment of MIG dynamics/Arc Force (7)
With MIG welding dynamics adjustment is influenced on welding stability and spatter amount.
Zero setting is recommended basic setting. Values –> min (-1...-9), softer arc for reduced spatter
amount. Values –> max (1...9), harder arc for increased stability and when 100 % CO ² shielding
gas is used when welding steel.
With electrode welding Arc Force adjustment is influenced on welding stability. Adjustment
is needed for using different types of electrodes. Control range (-9...0) is commonly used for
welding electrodes for stainless steel. Control range (0...+9) is used for harder arc characteristic
to increase stability, e.g. for welding with thicker basic electrodes and using lower current value
than recommendated. Factory set value (0) is a good general use for adjusting the roughness of
the arc.
Gas test (8)
The gas test button opens the gas valve without activating the wire feed or power source.
By default, gas flows for 20 seconds. The display shows the remaining gas flow time.
The default time for gas flow can be adjusted via the right-hand potentiometer within a 10- to 60-
second range. The new time setting is recorded in the memory.
The gas flow can be discontinued by pressing the ON/OFF button or the start switch of the gun.
Wire feed test (9)
The wire feed switch starts the wire feed motor without opening the gas valve and without engaging
the power source. The default wire feed speed is 5 m/min. The speed can be adjusted via the
right-hand potentiometer.
When the button is released, the wire feed stops. Unit operation returns to normal approx. 3 seconds
after release of the button or if the ON/OFF button is pressed briefly.
Selection of liquid- /gas-cooled MIG gun (11)
Selection of liquid-cooled/gas-cooled MIG gun is activated by pressing buttons 7 and 8
simultaneously (for more than 1 second). When 'Gas' is shown on the display, the welding equipment
will assume that a gas-cooled MIG gun has been connected. If the above buttons are pressed again,
the text 'COO Ler' appears on the display and the LED (12) indicating liquid cooling selection
lights up. In this case, the welding equipment will assume that a liquid-cooled MIG gun has been
connected to the equipment. When liquid cooling is selected, the liquid cooling unit will start up
in connection with the next equipment start-up.
Weld data (13)
The weld data function is activated by pressing buttons 8 and 9 simultaneously. The weld data
function returns the welding current and voltage values that were in use when welding was
discontinued to the displays.
MMA (14)
Selection of MMA welding is activated by pressing buttons 6 and 7 simultaneously To get back
to MIG welding repress buttons 6 and 7.
Use of remote control units (10)
When a remote control unit is connected to the device, LED (10) lights up and the wire feed speed
and welding voltage setting operations are performed via remote control. In this case, potentiometers
2 and 3 of the panel are disconnected.
© Kemppi oy
WeldForce KWF 500, 300, 00S, 300S / 061 – 15
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