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OPERATION
B-4 B-4
COMPACT WIRE WELDERS
See Figure B.3
8. WELDING GUN CONNECTOR BUSHING &
THUMBSCREW – Provides electrical power to the
welding gun. The thumbscrew holds the welding gun
into the connector block. (Front of Machine, Side
Door and Wire Drive Cover have been removed for
clarity of Items 8 and 9).
9. OUTPUT TERMINALS –These connections allow
for changing the output polarity of the machine
depending on whether you are MIG welding (+) or
flux-cored welding (-)-.
See Figure B.4
10. WIRE SPOOL SPINDLE AND BRAKE – Holds a
4”(102mm) diameter spool. Use the 2”(51mm)
spindle adapter included with the machine to use
8”(203mm) diameter spools. The wing nut sets the
brake friction to prevent the spool from over rotat-
ing when the trigger is released.
See Figure B.5
11. WIRE DRIVE & COMPONENTS (ALUMINUM
DRIVE HOUSING) – Feeds wire from the wire
spool through the drive and through the welding
gun to the weld.
a. Top and Bottom Drive Roll – Drives the wire
through the drive system. The drive roll has a
groove to match the specific wire type and diam-
eter. Refer to Table B.1 for available drive rolls.
b. Inner & Outer Wire Guide – Guides the wire
between the Top and Bottom Drive Roll and
through the wire drive. The inner guide has a
groove to match a particular wire diameter. Refer
to Table B.1 for available wire guides.
c. Drive Roll Tension Thumbscrew – Turning
clockwise increases the force on the drive rolls
and turning counterclockwise decreases the
force.
8
9
FIGURE B.3
2"(51mm) SPINDLE ADAPTER (FOR 8"(20mm) REEL OF WIRE)
( 4"(102mm) REEL OF WIRE)
FIGURE B.4
FIGURE B.5
WIRE SPOOL
.035" (0.9mm)
NR-211-MP
INNER WIRE GUIDE REMOVED
LOWER DRIVE ROLL REMOVED
OUTER WIRE GUIDE REMOVED
TOP DRIVE ROLL PRESSURE ARM
TENSION ADJUSTOR DOWN
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