ESAB Esp-1000 Plasmarc System Manual De Instrucciones página 309

section 5
5.4 troubleshooting Guide (con't.)
Problem
2. Reduced nozzle life (N
and ArH ) - (cont)
2
Probable Cause
, O Catching on piece
2 2
Air curtain / water muffler
alignment
Excessive speed
Excessive pilot arc on
time.
Process factors:
Inadequate initial delay.
Pierce not complete before
starting.
Excessive initial delay.
Improper torch assembly.
Improper piercing
technique.
Running pilot arc without
transfer.
Using non-genuine
consumables.
Improper connection or
inadvertent grounding of
pilot arc cable running from
power source to plumbing
box.
Worn feet on retaining
This refers to crashes or nozzle damaged caused
by the front end of the torch catching on top spat-
ter after a pierce. Hold the torch at a high standoff
for a longer lead-in to avoid this problem.
Refer to Subsection 3.6 to make necessary adjust-
ments.
Reduce speed to prevent rooster tailing during cut.
Reduce speed corners if rooster tailing occurs only
coming out of corners.
Same as for electrode above.
Increase delay time.
Decrease initial delay.
Reassemble torch properly. Check for gas
and water leaks.
Refer to Subsections 4.3 and 4.5.
Running pilot arcs without transfer is very damag-
ing to nozzles. Check standoff and work connec-
tions.
Replace with genuine consumables.
Connect wire properly in the power source. Make
sure there are no breaks in the insulation.
Replace retaining cup.
309
tRoUBLesHootinG
Remedy