Lincoln Electric IM318-B manual Operating Instructions, ARC Rays

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

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.

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”.

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)

OPERATING INSTRUCTIONS

WARNING

	•	Do not touch electrically live parts or		•	Wear eye, ear and body protection.
		electrode with skin or wet clothing.
	•	Insulate yourself from work and
		ground.
ELECTRIC SHOCK			ARC RAYS
can kill.			can burn.
	•	Keep your head out of fumes.		•	Keep flammable material away.

•Use ventilation or exhaust to remove fumes from breathing zone.

FUMES AND	WELDING SPARKS
GASES can be	can cause fire or
dangerous.	explosion.

DUTY CYCLE

The DC-1500 is rated for 100% duty cycle at 1500 amps and 60 volts.

To Set Polarity

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.

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.

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.

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