Revision date 11.02.2014
Page 8 of 20
5 WELDING
MMA (SMAW stick electrode) welding
Select MMA welding (selector switch up).
Connect ground (return) cable with good contact to
the work piece.
Select polarity and amperage as recommended for
the electrode and start arc as follows:
Drag electrode across work piece like striking a
Match and lift electrode slightly after touching work.
If arc goes out electrode was lifted to high.
If electrode sticks to work piece, use a quick twist to
free it.
Hot start
The machine has automatic Hot Start 50% for stick electrode welding. This makes arc striking easier
and reduces the possibility of electrode sticking
Arc Force
Automatic Arc Force 50% for stick electrode welding provides optimal arc characteristics even for
cellulosic and aluminium electrodes.
TIG / TIG pulse welding
Select TIG process (selector switch down) or TIG pulse process (selector switch in middle position)
TIG pulse
is a definite advantage for welding sheet metal and thin walled plates and pipes. It
provides better control for the welder and less heat input in the work piece due to the cooling
obtained in the down-pulse period. This is especially important for poor heat conductors, like
stainless steel.
Connect TIG torch to negative (-) terminal on the machine. Connect ground (return) cable with good
contact to the work piece. Attach remote control to the torch and connect it to the machine
When the TIG process is selected normal open-circuit voltage is not present before tungsten
electrode touches and lifts from work piece. Only a low sensing voltage is present between
electrode and work piece.
The solid-state output contactor does not energize until after electrode is touching work piece.
This allows the electrode to touch the work piece without overheating, sticking, getting contaminated
or contaminate the work piece.
Start the arc as follows:
Turn gas on.
Touch tungsten electrode to workpiece at weld start point.
Hold electrode to workpiece for 1-2 seconds, and slowly lift electrode.
The arc is formed when the electrode is lifted.
.
1 Electrode
2 Workpiece
3 Arc
1 Electrode
2 Workpiece
Lift carefully and the arc will
be established
Touch the electrode to the work
piece. Only sensing voltage will
be present
2 Workpiece
