Lincoln Electric COMMANDER 400 SVM133-B Service Manual page 34

C-8
CONNECTION OF THE LN-25 TO THE
COMMANDER 400 "ACROSS THE ARC"
(SEE FIGURE C.6.)
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.6 shows the electrode connected for
negative polarity. To change polarity, shut the welder
off and reverse the electrode and work cables at the
Commander 400 output terminals. Reverse the LN-25
polarity switch.
3. Attach the single lead from the LN-25 control box
to the work using the spring clip on the end of the
lead. This is only a control lead — it carries no
welding current.
4. Place the IDLER switch in the "AUTO" position.
COMMANDER 400/LN-25 ACROSS THE ARC CONNECTION DIAGRAM
AMPHENOL
14 PIN
ACCESSORIES
FIGURE C.6
6 PIN
AMPHENOL
+
CV-
TO WORK
COMMANDER 400
CAUTION
If you are using an LN-25 without an internal contac-
tor, the electrode will be "HOT" when the Commander
400 is started.
5. Set the RANGE switch to "WIRE WELDING CV."
6. Set the WELDING TERMINALS switch to 'WELD-
ING TERMINALS ALWAYS ON."
7. Set the VOLT METER switch to "+" or "-" depend-
ing on the polarity chosen.
8. Adjust wire feed speed at the LN-25.
9. Set the LOCAL/REMOTE switch to "REMOTE" if a
K444-1 remote control is used.
CAUTION
Electrode is always "HOT."
LN-25
WIRE FEEDER
ELECTRODE CABLE
C-8
OPTIONAL K444-1
REMOTE CONTROL
WORK CLIP LEAD
TO WORK