INSUFFICIENT PENETRATION
This error may be caused by the
following:
• High speed. Always make sure that the arc fully
pene
trates
the work piece and is never held at a forward angle of more
than 10 -15°. This will avoid incorrect
consump
tion of the
nozzle and burns to the nozzle
holder
.
• Excessively thick work piece (see cutting speed
dia
grams, fig. 5).
• Grounding clamp not in good electrical contact with
the
work piece.
• Worn nozzle and electrode.
• Cutting current too low.
NOTE: When the arc does not penetrate, the
molten
metal scraps obstruct the nozzle.
THE CUTTING ARC GOES OFF
This error may be caused
by:
• Worn nozzle, electrode or swirl ring.
• Air pressure too high.
• Supply voltage too low.
REPLACING CONSUMABLE PARTS
Always shut off the machine before replacing
consu
mer parts.
• The electrode must be replaced when it has a crater in the
center approximately 1 mm deep (.039”) or slightly over
1/32”.
• The gas nozzle must be replaced when the hole is no
longer smooth and the cutting capacity is diminished.
• The swirl ring must be replaced when some areas are
blackened. Due to its small size, it is very important to
position it correctly during assembly (see fig. 4).
• The nozzle holder must be replaced when the insulating
part is deteriorated
Make sure that the electrode T, the swirl ring U and
the
gas nozzle V are mounted correctly, and that
the
nozzle holder W is firmly tightened.
If any of these parts are missing, this will interfer
e
with smooth operation of the machine and,
especial
ly,
jeopardize operator safety
SHORTER LIFE OF CONSUMABLE PARTS
This error may be caused by:
• Oil or dirt in the arc intake,
• Unnecessarily long pilot arc,
• Low arc pressure.
HELPFUL HINTS
• If the system air contains considerable amounts of moisture
and oil, it is best to use a drying filter to avoid excessive
oxidation and wear on consumable parts, damage to the
torch and a reduction in the speed and quality of the cutting.
• Make sure that the new electrode and nozzle to be mounted
are thoroughly clean and degreased.
• Always use original spare parts to avoid damaging the
torch.
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