Lincoln Electric IDEALARC DC-1500 Service Manual page 11

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WARNING
• Do not lift this machine using lift
bale if it is equipped with a
heavy accessory such as a trail-
er or gas cylinder.
• Lift only with equipment of
adequate lifting capacity.
FALLING
EQUIPMENT can
• Be sure machine is stable when
cause injury.
lifting.
LOCATION
Install the welder in a dry location where there is free circula-
tion of air in through the louvers in the front and out through
the louvers in the back of the case. A location which minimizes
the amount of smoke and dirt drawn into the machine
reduces the chance of dirt accumulation that can block air
passages and cause overheating.
INPUT WIRING
WARNING
• Have an electrician install and
service this equipment.
• Turn the input power off at the
fuse box before working on
equipment.
ELECTRIC SHOCK
• Do not touch electrically hot
parts.
can kill.
Failure to fuse the input lines per the specifications in this
manual will constitute customer abuse and void the war-
ranty.
------------------------------------------------------------------------
Be sure the voltage, phase and frequency of the input power is
as specified on the welder nameplate.
Have a qualified electrician remove the lower right side case
panel and connect 3 phase AC power to terminals L
L of the input contactor in accordance with the Na-tional
3
Electrical Code, all local codes and the wiring diagram located
inside the machine.
The frame of the welder must be grounded. A stud marked
with the symbol located on the fan shroud is provided for
this purpose. See the U.S. National Electrical Code for
details on proper grounding methods.
Recommended Input Wire, Grounding Wire and Fuse Sizes
Based on National Electrical Code For 60 Hertz,
3 Phase Welders at 100% Duty Cycle
Copper Wire Size
Type 75° In Conduit
Input Amps 3 Input
Volts Input Wires
460 184 000
INSTALLATION
, L and
1 2
Grounding Super Lag Fuse
Conductor Size in Amps
3 300
IDEALARC® DC-1500
NOTE: The standard machines are designed to operate on
460 volt-60 Hertz, 440 volt-50 Hertz and 380 volt-50 Hertz
input power systems. However, to use the machines on 380
volt-50 Hertz power, reconnect the transformer input leads
in accordance with the connection diagram pasted to the
inside of the lower right side case panel.
OUTPUT CONNECTION (Turn Power Source
Off)
a. Output Studs
The "Positive" and "Negative" output studs are located
on the front panel. Two of each are provided to simplify
connecting multiple electrode or work cables as sug-
gested in the table below.
Connect the electrode cables to the "Positive" studs for
electrode positive (DC+) polarity or to the "Negative"
stud for electrode negative (DC-) polarity as required by
the welding procedures. Connect the work cables to the
other set of studs. Tighten the nuts with a wrench.
Suggested Copper Cable Sizes — 80% Duty Cycle
Below 1000 amps
1000 to 1200 amps
1200 to 1500 amps
b. Auxiliary Power
This machine supplies the 1000 volt-amperes of 115
volt, AC power needed for the automatic wire feeders.
The power is available from terminals #31 and #32 on
the terminal strip.
c. "NL Option" (K783) (OBSOLETE)
Installation of an NL option is required when connecting
a DC-1500 to LAF-3, NA-2, LT-3 or LT-34 wire feeding
systems. See the section on page 9 entitled "NL Option
Kit" for full information.
d. Wire Feeder Connection — Without NL Option
Turn the welder off. Remove the screw and lift the
hinged door on the front of the control panel to expose
the terminal strips. Connect the leads of the wire feeder
input control cable to the terminal strip exactly as speci-
fied in the appropriate connection diagram included in
the wire feeder Operating Manual. Attach the control
cable to the panel at the right of the terminal strip using
the clamp attached to the control cable. Close the door
and replace the screw.
To connect the DC-1500 to wire feeders not covered in
available connection diagrams, write to the factory for
instructions giving complete nameplate information for
the DC-1500 and wire feeder.
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Two 4/0
Up to
Three 4/0
200'
Four 4/0