Tweco 3000 Merlin - Manual (Page 42)

OPERATION 4-10 Manual 0-2532
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
factory-set at 2 seconds, but can be reset to 4, 7, or
10 seconds as desired. Extended torch leads may
require longer pre-flow durations.
Pre-Flow Time
(Seconds)
SW3-1
Position
SW3-2
Position
2 * 0 (Off) 0 (Off)
4 0 (Off) 1 (On)
7 1 (On) 0 (Off)
10 1 (On) 1 (On)
* = Factory Setting
D. Gas Post-Flow Delay (SW4)
ON
OFF 1 2
SW4
A-00994
Logic PC Board
Figure 4-11 Gas Post-Flow Delay Switch SW4
Location