Connection Of The Ln-25 With K857 Remote Control; Connection Of The - Lincoln Electric RANGER 305 D Service Manual

RANGER 305D
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
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.
FIGURE C.4 - Ranger 305D/LN-25 CROSS THE RC
CONNECTION DI GR M WITH K857 REMOTE CONTROL
14-PIN
AMPHENOL
to the "-" terminal
6-PIN
AMPHENOL
-
+
TO WORK
C UTION
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 "-" depending 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.
LN-25
WIRE FEEDER
ELECTRODE CABLE
C 6
ACCESSORIES
OPTIONAL K857
REMOTE CONTROL
WORK CLIP LEAD
TO WORK