Lincoln Electric IM669 RED-D-ARC DC-600 - Manual (Page 21)

DC-600 RED-D-ARC
B-6 OPERATION B-6
OPERATING STEPS
The following procedures are for using the DC-600 in
the local control mode of operation. For remote control
of the machine, see the Remote Control of Machine
Operation section.
Before operating the machine, make sure you have all
materials needed to complete the job. Be sure you are
familiar with and have taken all possible safety pre-
cautions before starting work. It is important that you
follow these operating steps each time you use the
machine.
1. Turn on the main AC power supply to the
machine.
2. Connect the #21 work lead to either + or - on ter-
minal strip (T.S.2).
3. Set the Welding Mode switch to welding process
being used:
• CC STICK (for SMAW and AAC)
• CV SUBMERGED ARC (for SAW)
• CV INNERSHIELD (for FCAW and GMAW)
4. Turn the POWER ON/OFF Toggle Switch to the
“ON” position
• The white pilot light glows.
• The fan starts.
5. Set OUTPUT CONTROL Potentiometer to desired
voltage or current.
6. Set the OUTPUT TERMINALS switch to either
“ON” ( output terminals energized) or “REMOTE”
(output terminals energized when #2 and #4
closed by remote device such as wire feeder)
7. Make the weld.
REMOTE CONTROL OF MACHINE
OPERATION
The toggle switch on the control panel labeled
“Remote - Panel” gives the operator the option of con-
trolling the machine output from a remote location. If
in the Remote position a wire feeder with remote con-
trol capabilities or a remote control device such as a
K775 must be connected to terminals 75, 76, and 77.
Refer to Accessories Section for wire feeder remote
information.
WELDING PROCEDURE
RECOMMENDATIONS
Select Welding Mode Switch position based on type of
welding to be done.
1. Innershield Welding (FCAW)/MIG (GMAW)
Welding: Use the CV INNERSHIELD mode.
2. Submerged Arc Welding (SAW): Use the CV
SUBMERGED ARC mode. If performing high
speed welding, switch between the CV
Submerged Arc and the CV Innershield mode and
use the mode that produces the best welding
results.
3. Air/Carbon Arc Cutting (CAC) / Stick Welding
(SMAW) / High Current, Large Puddle Submerged
Arc Welding (SAW): Use the CC STICK mode.
When the DC-600 is used for Air/Carbon Arc cut-
ting, the OUTPUT CONTROL potentiometer
should be set to "9" initially. Based on the size of
the carbon being used or the process, turn the
potentiometer to a lower setting as required by the
process. You can use carbon rods up to 3/8" in
diameter at currents as high as 750 amps with
excellent arc control. The welder protection circuit
protects the machine from extremely high short
circuiting pulses.