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CONNECTION OF THE LN-25 TO THE
RANGER 305D “ACROSS THE ARC”
WITH K857 REMOTE CONTROL
(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 “+” 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
negative polarity. To change polarity, shut the welder
off and reverse the electrode and work cables at the
Ranger 305D output terminals.
3. Connect the K857 Remote Control to the 6-pin
amphenol on the Ranger 305D.
4. Attach the single lead from the LN-25 to the work
using the spring clip on the end of the lead. This
is only a sense lead - it carries no welding current.
5. Place the “IDLER” switch in the “AUTO” or “HIGH”
position, as desired.
If you are using an LN-25 without an internal contactor,
the electrode will be “HOT” when the Ranger 305D is
started.
------------------------------------------------------------------------
6. Set the “MODE” switch to “CV-WIRE.”
7. Set the “WELD TERMINALS” switch in the “WELD
TERMINALS ON” position.
8. Set the “VOLTMETER” switch to “+” or “-” depend-
ing on the polarity chosen.
9. Adjust the wire feed speed at the LN-25 and adjust
the welding voltage with the K857 if optional
remote control is used.
9. Adjust the ARC control to “0” initially and adjust to
suit.
ACCESSORIES
C-6 C-6
RANGER 305D
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CAUTION
+
-
TO WORK
14-PIN
AMPHENOL
6-PIN
AMPHENOL
OPTIONAL K857
REMOTE CONTROL
ELECTRODE CABLE
LN-25
WIRE FEEDER
TO WORK
WORK CLIP LEAD
FIGURE C.4 - Ranger 305D/LN-25 ACROSS THE ARC
CONNECTION DIAGRAM WITH K857 REMOTE CONTROL