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OPERATION
B-5 B-5
COMPACT WIRE WELDERS
TABLE B.1
DRIVE ROLL AND WIRE GUIDES
Wire Diameter &
Type
.025”(0.6mm) MIG wire
.030”(0.8mm) MIG wire
.035”(0.9mm) MIG wire
.030”(0.8mm) flux-cored
.035”(0.9mm) flux-cored
.045”(1.1mm) flux-cored
Drive Roll
.025”/.030” (0.6mm/0.8mm)
Smooth Drive Roll
.035”(0.9mm) Smooth Drive Roll
.030”/.045” (0.8mm/1.1mm)
Knurled Drive Roll
.030”/.045” (0.8mm/1.1mm)
Knurled Drive Roll
Inner Wire Guide
.025”-.035”
(0.6mm-0.9mm)
Steel Wire Guide
.045”(1.1mm)
Steel
Wire Guide
Inner Wire Guide
Part Number
KP2531-1
KP2531-2
Drive Roll Part
Number
KP2529-1
KP2529-2
KP2529-3
KP2529-3
See Figure B.6
12. CIRCUIT BREAKER – If the rated input current of
the machine is exceeded this circuit breaker will
trip. Press to reset.
13. GAS INLET – Shielding gas connects to this inlet.
NOTE: Only on 125 amp machines that have added
the MIG Conversion Kit (K2525-1)
12
13
FIGURE B.6
See Figure B.5a
11a. WIRE DRIVE & COMPONENTS (MOLDED
DRIVE HOUSING) – Feeds wire from the wire
spool through the drive and through the welding
gun to the weld.
a. Drive Roll – Drives the wire through the drive
system. The drive roll has a groove to match the
specific wire type and diameter. Refer to Table
B.1 for available drive rolls.
b. Liner & Outgoing Guide – The liner guides the
wire between the bearing on the Pivot Arm
Assembly and Drive Roll and through the outgo-
ing guide.
c. Drive Roll Tension Thumbscrew – Turning
clockwise increases the force on the drive roll
and turning counterclockwise decreases the
force.
WIRE SPOOL
.035" (0.9mm)
NR-211-MP
PIVOT ARM ASSEMBLY
TENSION ARM ASSEMBLY
LINER
DRIVE ROLL
OUTGOING GUIDE
BEARING
FIGURE B.5a
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