Section 4: Operation with Automatic Gas Console
Spirit II User’s Manual
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4-22
When any of the following errors occur, measures should be taken to avoid further
errors. The following is a description of the errors and possible causes:
•
Transferred arc not established
This error occurs when the arc fails to transfer to the workpiece. It primarily causes
nozzle damage and is typically due to a pierce height that is too high.
•
Transferred arc lost before upslope
This error occurs when the arc transfers to the workpiece but is lost immediately. It
primarily causes nozzle damage and is typically due to a pierce height that is too
high.
•
Transferred arc lost during upslope
This error occurs when the arc transfers to the workpiece but is lost before steady
state operation. It primarily causes electrode damage and is typically due to a pierce
time that is too long or when cutting a given thickness with excessive current.
•
Transferred arc lost during cut
This error occurs when the arc is lost during steady state operation. It substantially
shortens the electrode life and is typically due to a torch standoff distance that is too
high or a travel speed that is to slow.
•
Transferred arc lost during downslope
This error occurs when the arc is lost after a stop signal is received but before the
current downslope completes. It substantially shortens the electrode life and is
typically due to an incorrect lead-out or when cutting a given material thickness with
excessive current. When cutting small pieces that tend to drop into the table after
being cut, there should be a very short lead out or none at all. On thicker materials,
the arc is sometimes lost when crossing the kerf during the lead out.
It is critical
that the lead-outs be fine-tuned so the arc is not lost before downslope is
complete.
