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INDURO 145 OWNERS MANUAL
B. MMAW OPERATION
Be certain that you are wearing suitable protective clothing, gloves etc. and that you
are working in a non-hazardous area. If necessary, refer again to the SAFE PRACTICES
section of this manual.
Connect the Work Clamp to the work piece. Place the desired electrode in the
Electrode Holder.
Turn on the power switch located on the rear panel. Wait approx 5 seconds as the
unit goes through its initiation sequence.
Press the Weld Mode button until the Stick Mode LED is lit. The Induro 145 keeps
the last mode used in memory, so this step is only necessary when using a different mode
to that used last.
Select an appropriate welding current for the electrode diameter by setting the knob
on the machine front panel. WIA AUSTARC electrodes will give the b est results.
To strike the arc, drag the end of the electrode along the work piece as if striking a
match. As the arc initiates, lift the electrode slightly away, aiming to establish an arc length
of approximately 3mm.
As the electrode end is consumed, feed the electrode into the arc in order to
maintain arc length. As a general rule, the arc should be held as short as possible while
still giving stable burn off and good weld appearance. An arc which is too long cause an
unwieldy flow of metal with a rough weld appearance and reduced penetration. An arc too
short leads to a narrow weld deposit and “stuttery” arc characteristics, and the electrode is
liable to freeze onto the work piece.
As the solidified weld deposit forms, move the end of the electrode s lowly along the
weld path, aiming to maintain a pool of molten weld metal behind the arc. Decreasing this
rate of travel will result in a wider weld deposit, and similarly increasing it will narrow the
weld deposit.
Always fill the crater which tends to form at the end of a weld deposit, by pausing
momentarily before withdrawing the electrode to break the arc. Unfilled craters are a point
of weakness, and can lead to weld cracking.
FIGURE 3. STRIKING THE ARC
