Lincoln Electric SVM138-A Service Manual page 17

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FIGURE A.6 – CONNECTION OF LN-9 GMA TO DC-1000 POWER SOURCES
ELECTRIC SHOCK
Above diagram shows electrode connected positive. To change polarity, turn power off, reverse the electrode and work leads at the
power source, position the positive - negative switch on power source to correspond to the polarity of the electrode cable connection.
N.A. Welding cables must be proper capacity for the current and duty cycle of immediate and future applications.
N.B. 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 separate from the welding work cable connection
to work piece. For convenience, this extended #21 lead should be taped along the welding work cable. (This extended #21 lead
connection replaces the need to employ the remote work lead accessory on any LN-9 GMA which has a direct work lead jack).
N.C. Tape up bolted connection.
N.D. Connect the LN-9 GMA control cable ground lead to the frame terminal marked
power source must be properly grounded.
N.E. If using an older automatic control cable with leads #75, #76, #77; connect lead #75 to #75 on terminal strip, connect lead #76 to
#74 on terminal strip, connect lead #77 to #73 on terminal strip.
N.F. The LN-9 GMA voltage control jumpers must be connected as follows:
White jumper on voltage board to pin "S".
Blue jumper on voltage board (Later units only) or on start board (earlier units) to pin "B".
N.G. Set the DC-1000 controls as follows:
Set the control switch to "output control remote". For submerged arc processes, set the mode switch to "C.V. submerged arc".
For open arc processes, set the mode switch to "C.V. Innershield".
N.H. Alternative 500 amp positive terminal connection provided on DC-1000 models above code 9500 only.
INSTALLATION
WARNING
• Turn off input power to the welding
power source using the disconnect
switch at the fuse box before connect-
ing the wire feeder
• Only qualified persons should install,
use or service this machine.
can kill.
LN-9 GMA Wire Feeder
TO LN-9 GMA INPUT CABLE PLUG
near the power source terminal strip. The
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