Manual 0-2568 39 OPERATION
the system is used to replace other units which do not
have auto-restart, or for use with motion control de-
vices. In many applications, torch parts life may be
improved by disabling auto-restart to reduce exces-
sive pilot arc time.
NOTE
Either pole set to 1 (on) disables auto-restart func-
tion.
Auto-Restart
Function
SW1-1
Position
SW1-2
Position
Enabled 0 (Off) 0 (Off)
Disabled 0 (Off) 1 (On)
Disabled 1 (On) 0 (Off)
Disabled * 1 (On) 1 (On)
* = Factory Setting
B. Auto-Restart Mode (SW2)
ON
OFF
1 2
SW2
A-00992
Logic PC Board
Figure 4-9 Auto-Restart Mode Switch SW2 Location
Normal mode provides an immediate pilot restart
whenever the main arc is interrupted and the Auto-
Restart switch SW1 is set to ENABLE. Delayed mode
provides a gas pre-flow each time before the pilot arc
restarts. In some shape-cutting applications, it may
not be desirable to immediately restart the main arc
after the torch passes beyond the desired cutting line
(or between cuts).
NOTE
Either pole set to 1 (on) sets delayed auto-restart
function.
Auto-Restart
Mode
SW2-1
Position
SW2-2
Position
Normal * 0 (Off) 0 (Off)
Delayed 0 (Off) 1 (On)
Delayed 1 (On) 0 (Off)
Delayed 1 (On) 1 (On)
* = Factory Setting
C. Gas Pre-Flow Delay (SW3)
ON
OFF
1 2
SW3
A-00993
Logic PC Board
Figure 4-10 Gas Pre-Flow Delay Switch SW3
Location
The pre-flow delay allows time for gases to flow to
the torch when the torch is activated. Pre-flow is im-
mediately followed by pilot arc initiation. Pre-flow is
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