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INSTALLATION
e. Optional Remote Control (K775)
This control is included as part of the “NL Option”.
Connect it to the “NL Option” box per instructions
shipped with the option. (Not required with the NA-3,
NA-5, LT-7 or LT-56.)
It can be purchased separately when the DC-1500 is
used for other applications.
To install, turn the power off. Remove the screw and
lift the hinged door on the front of the control panel to
expose the terminal strips. Connect the numbered leads
to the appropriate terminals — 75 to 75, etc — on the
terminal strip and the green lead to the stud marked
with the symbol . Attach the control cord to the
panel at the right of the terminal strip using a suitable
clamp. Close the door and replace the screw. The Re-
mote Control cord can be lengthened to any length by
properly splicing an appropriate four conductor rubber-
covered cable to the standard 25’ cord before connecting
to the DC-1500 terminal strip.
f. Connecting for Air Carbon Arc
To use the DC-1500 for air carbon arc or other appli-
cations, disconnect all wire feeder welding cables and
DUTY CYCLE
The DC-1500 is rated for 100% duty cycle at 1500 amps
and 60 volts.
To Set Polarity
Connect the electrode cable to the “Positive” or “Negative”
studs depending upon the electrode polarity desired. Con-
nect the work cable to the other studs.
Set the “Electrode Negative — Electrode Positive” switch
to correspond to the polarity of the electrode cable connec-
tion. This switch setting is necessary for proper operation
of the Lincoln wire feeder attached to the power source.
To Start the Welder
Press the “On-Off” pushbuttons to start and stop the welder.
The red pilot light near the center of the control panel in-
dicates when the welder is on.
control leads and connect a jumper between #2 and #4
on the terminal strip on the front of the DC-1500. With
the #2 to #4 jumper connected, the output studs are en-
ergized whenever the machine is on.
g. DC-1500 Paralleling Kit
A kit for field installation only, (order K1900-1) is avail-
able for paralleling two DC-1500’s for currents up to
3000 amperes, 100% duty cycle. Complete installation
instructions are shipped with the kit.
h. Connecting for High Frequency Starting
As shipped, these welders can be used with a high fre-
quency unit for improved automatic welding starting
characteristics.
RATINGS
IP21 enclosure
Main Transformer insulation class 155 (F)
WARNING: If the electrode leads to the wire are not
disconnected per instructions, the wire feeder nozzle or
gun and electrode will be electrically “hot”.
OPERATING INSTRUCTIONS
WARNING
ELECTRIC SHOCK
can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground.
ARC RAYS
can burn.
• Wear eye, ear and body protection.
WELDING SPARKS
can cause fire or
explosion.
• Keep flammable material away.
FUMES AND
GASES can be
dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing zone.
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