10
INSUFFICIENT PENETRATION
This error may be caused by the following:
•
High speed. Always make sure that the arc fully penetrates
the work piece and is never held at a forward angle of more
than 10 -15°. This will avoid incorrect consumption of the
nozzle and burns to the nozzle holder.
•
Excessively thick work piece (see cutting speed
diagrams, 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
consumer 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 interfere
with smooth operation of the machine and, especially,
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
.
TROUBLESHOOTING/
CONSUMABLE REPLACEMENT
