OPTIONS/ACCESSORIES

FACTORYINSTALLED OPTION

DIODE OPTION
This factory installed option allows use of the cold-
start and cold electrode sensing features of the NA-3,
NA-5, or NA-5R automatic wire feeders. See the topic,
Connecting the NA-3 [NA-5] to the Idealarc DC-400
in this section of the manual.

FIELD INSTALLED OPTIONS

The following options/accessories are available for
your Idealarc DC-400 from your local Lincoln
Distributor.
COVER FOR 14-PIN AMPHENOL (LINCOLN
ELECTRIC PART NUMBER S17062-3)
Protects the amphenol from dirt and moisture when
the amphenol is not being used.
MULTIPROCESS SWITCH (K804-1. ALSO
AVAILABLE AS A FACTORY INSTALLED OPTION.)
Required when using the DC-400 for both automat-
ic/semiautomatic and stick/air carbon arc. This field or
factory installed kit mounts on the front of the DC-400.
It includes hinged covers over its output studs.
The switch has three positions.
• Wire Feeder Positive
• Wire Feeder Negative
• Stick/Air Carbon Arc
The Multiprocess Switch gives you the ability to:
• Switch between “Stick Welding/Air-Carbon Arc
Cutting” or “Positive Wire Feeder” or “Negative Wire
Feeder.”
• Change the polarity of a semi-automatic or auto-
matic wire feeder without changing any electrical
cable connections. See Figure C.1.
The Multiprocess Switch has two sets of output termi-
nals. You connect the wire feeder unit cables to the
set of terminals on the left side of the box (facing the
front of the machine) and the stick or air/carbon arc
cables to the set of terminals on the right side as
shown in Figure C.1.
When the Multiprocess Switch is in the “Stick Welding/
Air-Carbon Arc” position, only those terminals are
energized. The wire feeder nozzle or gun and elec-
trode are not electrically “hot” when in this mode.
Refer to installation instructions (M17137) included
with Multiprocess Kit for installation.
ACCESSORIES
C-2 C-2
LINCOLN ®
ELECTRIC
IDEALARC DC-400
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FIGURE C.1
MULTIPROCESS SWITCH