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b-3
(See Customer Assistance Policy in the front of this
Instruction Manual)
CASE FRONT CONTROLS
FIGURE b.1
1
2
3
4
5
6
ITEM
DESCRIPTION
1
Wire Feed Speed/Amperage Display
2
Wire Feed Speed LED
3
Amperage LED
4
Wire Feed Speed Knob
5
5 pin gun trigger connector
6
Work Clip Connection
7
Thermal LED
8
Voltage Display
9
Voltage LED
10
Set-up Push Button
OPERATION
WIRE FEED SPEED KNOb
Wire Feed Speed, CV Operation
When Across the Arc models are operated with CV
(See Figure b.1)
power sources, the wire feed speed will remain a con-
stant value, independent of arc voltage changes, as
along as the arc voltage does not drop below the val-
7
ues per the following table.
83% Wire Feed Speed
8
The 83% wire feed speed reduces the wire feed
speed to 83% of the original set value when activated.
For example, if the original wfs = 200 in/min, the feed-
er will regulate to 0.83 x 200 = 166 in/min.
9
The 83% trigger requires a gun with a dual procedure
10
switch.
This feature is often useful when welding pipe, and a
"cooler" procedure is required on the bottom portion.
LN™-25 PIPE
CV OPERATION
Minimum Arc Volts
15 V
17 V
21 V
24 V
27 V
b-3
Maximum WFS
Standard Spin
Gearing
280
340
440
520
600
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