LN-25
B-7
Arc Volts Used
Desired
In/Min
16 18
20
22 24 26 28 30 32 34
50
109
97
88
80
73
67
63
58
55
51
60
131 117 105
95
88
81
75
70
66
62
70
153 136 123 111 102
94
88
82
77
72
80
175 156 140 127 117 108 100
93
88
82
90
197 175 158 143 131 121 113 105
98
93
100
219 194 175 159 146 135 125 117 109 103
110
241 214 193 175 160 148 138 128 120 113
120
263 233 210 191 175 162 150 140 131 124
130
284 253 228 207 190 175 163 152 142 134
140
306 272 245 223 204 188 175 163 153 144
150
328 292 263 239 219 202 188 175 164 154
160
350 311 280 255 233 215 200 187 175 165
170
372 331 298 270 248 229 213 198 186 175
180
394 350 315 286 263 242 225 210 197 185
190
416 369 333 302 277 256 238 222 208 196
200
438 389 350 318 292 269 250 233 219 206
210
459 408 368 334 306 283 263 245 230 216
220
481 428 385 350 321 296 275 257 241 226
230
503 447 403 366 335 310 288 268 252 237
240
525 467 420 382 350 323 300 280 263 247
250
547 486 438 398 365 337 313 292 273 257
260
569 506 455 414 379 350 325 303 284 268
270
591 525 473 430 394 365 338 315 295 278
280
613 544 490 445 408 377 350 327 306 288
290
634 564 508 461 423 390 363 338 317 299
300
656 583 525 477 438 404 375 350 328 309
310
678 603 543 493 452 417 388 362 339 319
320
700 622 560 509 467 431 400 373 350 329
330
642 578 525 481 444 413 385 361 340
340
661 595 541 496 458 425 397 372 350
350
681 613 557 510 471 438 408 383 360
360
700 630 572 526 484 450 420 394 370
380
666 604 554 512 472 444 416 392
400
700 636 584 538 500 466 438 412
420
668 612 566 526 490 460 432
440
700 642 592 550 514 482 452
460
670 620 576 536 504 472
480
700 646 600 560 526 494
500
674 626 584 546 514
520
700 650 606 568 536
540
676 630 590 556
560
700 654 612 576
580
676 634 598
600
700 656 618
620
678 638
640
700 658
660
680
680
700
700
MAKING A WELD
SETUP
a. Connect work cable to metal to be welded. Work
cable must make good electrical contact to the
work. The work must also be grounded as stated
in “Arc Welding Safety Precautions.”
b. Check that the LN-25 is properly connected to
the power source for the polarity and process to
be used, and appropriate power source settings
are made for the procedure to be used. (Refer to
power source operating and connection
instructions.)
NOTE:
If the K431-1 Remote Output Control Kit or
K624-1 42V Remote Control Module is installed but
the LN-25 is to be used
without
the K432 Remote
Control Cable Assembly, then the Remote Board
harness plug must be removed from the 16-pin
receptacle on the Control Board and the jumper plug
(T13498-21) reinstalled.
NOTE:
If the K460-1 Pulse Power Adapter Kit is
installed but the LN-25 is to be used without the K461
Pulse Power Control Cable Assembly, then the
instructions for returning the unit to across the arc
operation included with the Installation Instructions
(L9636) must be followed.
c. Place the LN-25 conveniently near the work area
in a location to minimize exposure to weld spatter
and to avoid sharp bends in the gun cable.
d. Connect the LN-25 Clip Lead to work and set Po-
larity Switch to same polarity as electrode.
e. Set WIRE FEED MODE switch to CV or CC, as
appropriate for the power source, then set the
proper DIAL RANGE and WIRE SPEED dial set-
ting for the proper wire feed speed per the
welding procedure:
For CV:
Set dial to the calibrated IN/MIN
desired. (Refer to Setting Constant Wire Feed
Speed Section.)
For CC:
Set dial to value determined from the
CC Wire Speed Graph for the DESIRED IN/
MIN and ARC VOLTS to be used. (Refer to
Setting Arc Sensing Wire Feed Speed
Section.)
NOTE:
If procedure permits a range of acceptable
arc voltage, use the middle of the range to
determine proper WIRE SPEED setting.
f. If using the optional Gas Flow Timer, set the de-
sired PREFLOW TIME and POSTFLOW TIME.
VV (CC) Speed Setting =
Desired IPM
X 35
Arc Volts
OPERATION
FIGURE B.4 VV(CC) WIRESPEED SETTING
