Kemppi Minarc 120 AU - Manual (Page 11)

EN
welding process selector, MMa / tig
Switch is used for selecting either MMA or TIG welding, depending on
welding target.
VRD: When you have switched the unit to TIG welding, VRD is constantly
active, thus reducing terminal voltage to 30 V. This facilitates arc cut-off when
you stop welding.
regulating welding current
Welding current rate is regulated steplessly with an adjusting potentiometer.
signal light for overheating
A yellow signal light of overheating is lit, when thermostat has tripped due
to the unit’s overheating. Fan will cool the unit and after the signal light goes
off, the unit is again ready for welding.
3.3 welding seleCtiOns
3.3.1 Manual Metal arc welding (MMa)
Select welding parameters according to filler manufacturer’s
recommendations.
1. Select polarity (+ or -) of welding current cable and return current cable
according to filler.
2. Select MMA welding with the switch .
3. Select suitable welding current by adjusting potentiometer.
3.3.2 dC tig welding
Select welding parameters according to filler manufacturer’s
recommendations.
1. Connect TIG torch to - pole and earth cable to + pole
2. Select TIG welding with the switch
.
3. Select suitable welding current by adjusting potentiometer.
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