Kemppi MIG 2520 - Manual (Page 8)

– Kempact mig 50 / 0635 © Kemppi oy
3.4. SELECTING THE WELDING PROCEDURE (2T/4T)
2T: MIG welding with double action of the start switch of the gun:
1. Switch closed - welding starts.
2. Switch open - welding ends.
4T: MIG welding with quadruple action of the start switch of the gun:
1. Switch closed - flow of shielding gas starts.
2. Switch open - welding starts.
3. Switch closed - welding ends.
4. Switch open - flow of shielding gas ends.
3.5. ADJUSTING WELDING DYNAMICS
The adjustment of MIG welding dynamics influences the properties
of the welding arc and the amount of splatter. The recommended
basic setting is ‘0’. The values -> min (-1...-9) provide a softer arc for
diminishing the amount of spatter. The values -> max (1...9) provide a
coarser arc, suitable when increased arc stability is desired and when
using 100% CO² shielding gas for welding steel.
3.6. THERMOSTAT
The temperature control of the machine prevents the power source from
over-heating.This means that the machine can not become damaged if loading
exceeds the specified load factor during welding. When the signal lamp
indicating overheating is lit, the welding circuit can not be activated. The
lamp will turn off after a pause of about three minutes, and welding can be
started again in the usual way by pressing gun switch.
3.7. WIRE FEED SWITCH
The wire feed switch will start the wire feed motor without opening the gas valve. The power
source will start up, but without providing welding power.