Lincoln Electric CLASSIC III SVM 137-A Service Manual page 35

C-7
CONNECTION OF THE LN-25 TO THE
CLASSIC III OR CLASSIC IIID (EQUIPPED
WITH K623-1 WIRE FEED MODULE)
"ACROSS THE ARC" (SEE FIGURE C.4.)
1. Shut the welder off.
2. Connect the electrode cable from the LN-25 to the
"+" terminal of the welder. Connect the work cable
to the "CV–" terminal of the welder.
NOTE: Welding cable must be sized for current and
duty cycle of application.
NOTE: Figure C.4 shows the electrode connected for
positive polarity. To change polarity, shut the welder
off and reverse the electrode and work cables at the
Classic III or Classic IIID output terminals. Reverse the
CLASSIC III OR CLASSIC IIID/LN-25 ACROSS THE ARC CONNECTION DIAGRAM
ACCESSORIES
LN-25 polarity switch.
3. Connect the K444-2 remote control cable to the 14
4. Attach the single lead from the LN-25 control box
5. Place the IDLER switch in the "HIGH" position.
6. Adjust wire feed speed and voltage at the LN-25.
FIGURE C.4
14 PIN
AMPHENOL
+
CV-
ELECTRODE CABLE
TO
WORK
Classic III and IIID
pin amphenol on the wire feed module.
to the work using the spring clip on the end of the
lead. This is only a control lead — it carries no
welding current.
LN-25 WIRE FEEDER
WITH K444-2 REMOTE
VOLTAGECONTROL OPTION
C-7
WORK CLIP
LEAD TO WORK