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CONNECTION OF THE LN-7 TO THE
CLASSIC III OR CLASSIC IIID (EQUIPPED
WITH K623-1 WIRE FEED MODULE)
USING K867 UNIVERSAL ADAPTER
(SEE FIGURE C.1.)
1. Shut the welder off.
2. Connect the electrode cable from the LN-7 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.1 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.
3. Connect the K867 Universal Adapter to the K291 or
K404 input cable and the 14 pin amphenol of the
Classic III or Classic IIID as indicated in Figure C.1.
Make the proper connections for local or remote
control according to Figure C.1.
4. Connect the K291 or K404 input cable to the LN-7.
5. Place the IDLER switch in the “HIGH” position.
Any increase of the high idle engine RPM by changing
the governor setting or overriding the throttle linkage
will cause an increase in the AC auxiliary voltage. If
this voltage goes over 140 volts, wire feeder control
circuits may be damaged. The engine governor set-
ting is preset at the factory — do not adjust above
RPM specifications listed in this manual.
6. Adjust wire feed speed at the LN-7.
NOTE: For remote control, a K775 remote control is
required. See Figure C.1.
When the welder is in local control, the electrode is
always “HOT.”
ACCESSORIES
C-4 C-4
Classic III and IIID
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CONNECTION OF LINCOLN ELECTRIC WIRE FEEDERS
CAUTION
CAUTION
FIGURE C.1
CLASSIC III OR CLASSIC IIID/LN-7 WITH K867 ADAPTER CONNECTION DIAGRAM
Splice Leads
and Insulate
Insulate Each
Unused Lead
Individually
TO
WORK
14 PIN
AMPHENOL
LN-7
CONTROL
BOX
SPARE
82
81
42
41
31 31
32 32
2 2
4 4
21
75
76
77
75
76
77
21
GND GND
GREEN
K291 OR K404
INPUT CABLE
K775 OPTIONAL
REMOTE CONTROL
K867 UNIVERSAL
ADAPTER PLUG
ELECTRODE CABLE
TO LN-7
CV-
+