Lincoln Electric LN-8 SVM132-A - Manual (Page 12)

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A-6 INSTALLATION A-6
LN-8
ELECTRIC
SHOCK
CAN KILL
TURN OFF INPUT POWER
TO THE WELDING POWER
SOURCE USING THE
DISCONNECT SWITCH
BEFORE WORKING
ON THIS EQUIPMENT. WARNING
2 4 21
POWER SOURCE
TO WORK
ELECTRODE CABLE TO
WIRE FEED UNIT
NEGATIVE
31 32
21
2
31
32
GND
A
B
C
4
75 76 77
TO OPTIONAL R3S
LINE VOLTAGE
COMPENSATOR
TO LN-8
INPUT CABLE PLUG
LN-8 CONTROL
CABLE
N.D.
N.B.
N.C.
N.B.
N.A.
THE ABOVE DIAGRAM SHOWS THE ELECTRODE CONNECTED FOR POSITIVE POLARITY. TO CHANGE POLARITY, TURN OFF THE POWER,
REVERSE THE ELECTRODE AND "TO WORK" LEADS AT THE POWER SOURCE, AND REVERSE THE "CONTROL SWITCH" AT THE POWER
SOURCE.
CONNECT THE LN-8 CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED NEAR THE POWER SOURCE TERMINAL STRIP
OR TO AN UNPAINTED FRAME SCREW. THE POWER SOURCE MUST BE PROPERLY GROUNDED.
N.A. ON EARLIER R3S-400, -600, AND -800 MACHINES, TERMINALS #67 AND #1 WERE ALSO ON THE TERMINAL STRIP.
N.B. WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS.
N.C. EXTEND LEAD #21 USING #14 OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FOR THE INSTALLATION. AN S16586-[ ]
REMOTE VOLTAGE SENSING WORK LEAD IS AVAILABLE FOR THIS PURPOSE. CONNECT IT DIRECTLY TO THE WORK PIECE, KEEPING IT
ELECTRICALLY SEPARATE FROM THE WELDING WORK LEAD CIRCUIT AND CONNECTION. FOR CONVENIENCE, THIS EXTENDED LEAD
#21 SHOULD BE TAPED TO THE WELDING WORK LEAD. (THIS EXTENDED #21 LEAD CONNECTION REPLACES THE NEED TO EMPLOY THE
REMOTE WORK LEAD ACCESSORY ON LN-8 METER KITS WHICH HAVE A DIRECT WORK LEAD JACK).
N.D. LN-8 LEADS A, B, AND C (#75, #76, AND #77 ON OLDER LN-8 CONTROL CABLES) ARE TAPED UP WHEN THE R3S LINE VOLTAGE
COMPENSATOR IS CONNECTED. ARC VOLTAGE IS CONTROLLED BY THE LINE VOLTAGE COMPENSATOR RHEOSTAT. THERE WILL BE NO
ADJUSTMENTS OF VOLTAGE BY THE LN-8 VOLTAGE CONTROL.
TAPE UP BOLTED CONNECTION
POSITIVE
FIGURE A.2 – CONNECTION OF LN-8 TO AN IDEALARC R3S-400, 600 OR 800
(WITH LVC) (DISCONTINUED)
CLEVELAND, OHIO U.S.A.