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MasterCraft MIG 140

MasterCraft MIG 140
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OPERATING INSTRUCTIONS
39
MIG 140 INVERTER WELDER 058-9305-6
Normal weld speed:
The bead will lay smoothly over the
work piece without ragged edges
(fig p).
The base metal puddle will be as deep as
the bead that rises above it.
The welding operation will make a
crackling sound.
Long arc:
The bead will be flat and wide
with
excessive spatter
(fig q)
.
The bead will undercut the work piece.
The slag will be difficult to remove from
the edges of the weld.
Guidelines for a good weld bead
A solid weld bead requires that the
electrode be moved slowly and steadily
along the weld seam.
Moving the electrode rapidly or
erratically will prevent proper fusion or
create an uneven bead.
MC-589305-45
fig p
MC-589305-46
fig q
WARNING!
Potential hazard that could result in serious injury or loss of life.
Do not perform any welding while standing, kneeling or lying on the
grounded area. Failure to comply could result in electric shock.

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