Operation Manual

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-o 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

o, the unit is again ready for welding.

3.3 WELDING SELECTIONS

3.3.1 Manual Metal Arc welding (MMA)

Select welding parameters according to ller manufacturer’s

recommendations.

1. Select polarity (+ or -) of welding current cable and return current cable

according to ller.

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 ller 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.