Tweco 6000 CE Merlin - Manual (Page 46)

OPERATION 4-10 Manual 0-2601
NOTE
Pre-flow timing depends on the Logic PC Board
installed in the Power Supply.
Refer to one of the following descriptions for the Logic
PC Board installed in the Power Supply:
• Power Supply Unit Rev AF or Earlier Using
Logic PC Board 19x1247
Pre-flow is factory-set at 2 seconds, but can be re-
set to 4, 7, or 10 seconds as desired.
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
Logic PC Board 19x1247
• Power Supply Unit Rev AG or Later Using Logic
PC Board 19x1360
Pre-flow is factory-set at 2 seconds, but can be re-
set to 0.5, 3, or 4 seconds as desired.
Pre-Flow Time
(Seconds)
SW3-1
Position
SW3-2
Position
0.5 0 (Off) 0 (Off)
2 * 0 (Off) 1 (On)
3 1 (On) 0 (Off)
4 1 (On) 1 (On)
* = Factory Setting
Logic PC Board 19x1360
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
Post-flow delay allows gases to flow after the main
cutting arc is interrupted. Post-flow is factory-set at
10 seconds, but can be reset to 5, 20, or 40 seconds.
P o s t-F l o w T im e
(S e c o n d s )
S W 4 -1
P o s i tio n
S W 4 -2
P o s i tio n
5 0 (O f f ) 1 (O n )
1 0 * 0 (O f f ) 0 (O f f )
2 0 1 (O n ) 0 (O f f )
4 0 1 (O n ) 1 (O n )
* = F a ct o ry S e t t in g