ESAB Esp-1000 Plasmarc System Manual De Instrucciones página 308

section 5
5.4 troubleshooting Guide (con't.)
Problem
1. Reduced consumable
(electrode) life (O and N
2 2
cutting) - (cont)
2. Reduced nozzle life
(N , O and ArH )
2 2 2
Probable Cause
O present at start.
2
Using non-genuine consum-
ables.
Improper pierce height.
Contacting work:
Diving
Work flipping
When O cutting, check above for gas switching.
2
When N cutting, any presence of O
2
rapid electrode wear. Make sure system has been
purged in cut gas test.
Check for gas or water leaks in torch or hoses.
Check gas quality. Ensure that O
trol is not leaking by disconnecting O
control purging system.
N cutting is done with a tungsten electrode.
2
Tungsten will turn blue or yellow in the presence of
oxygen from any source.
Replace with genuine consumables.
Refer to appropriate application table for correct
setting.
Diving is usually caused by a change in arc voltage
when an automatic height control is in use. Diving
can result in loss of cut damage to the nozzle. Usu-
ally the voltage change is as the result of a change
of direction or speed to negotiate a corner or as
a result of plate falling away from the arc. These
problems can be dealt with by disabling the height
control in such situations and by extinguishing the
arc earlier when finishing the cut on falling plate.
Diving may also be caused by a problem with the
height control or the signals fed to it.
The nozzle may sometimes be damaged if the
torch hits a flipped up part. This is difficult to avoid
entirely but careful part programming can minimize
the problem.
308
tRoUBLesHootinG
Remedy
will result in
2
OSV in flow con-
2
from the flow
2