Northern Industrial Flux Core 125 User manual

QUICK SET-UP GUIDE
This guide is intended to provide quick instructions on the set-up of your new welder.
Please take time to review the operator’s manual prior to operating this unit.
Flux Core 125
Item #628575
For more help visit www.ntwelderhelp.com
Or Call 1-877-304-0294

1
INSTALLING A 4” SPOOL OF WIRE
2
DRIVE ROOL - USE KNURLED GROOVE
56FEED WIRE - OPEN TENSION ARM
910
FEED WIRE - REMOVE GUN TIP & NOZZLE FEED WIRE - PULL TRIGGER TO FEED WIRE
Remove wing nut, washer and black bushing. Slide on spool so
wire feeds off the bottom of spool. Reinstall bushing, washer and
wing nut. See Step 12 to adjust wire spool tension.
Always make certain that the knurled groove is in line with the
wire when installed on drive shaft.
Open the drive roll tension arm on the wire feeder.
To finish feeding the wire through the gun, you will need to
remove the gun nozzle and tip.
Stretch out the gun. Turn on input power and pull the trigger to
feed the wire through the gun. Stop when the wire pushes through
the end of the gun.
Tighten
Clockwise
Knurled Groove
INSTALLING UNIT HANDLE
The handle for this unit is supplied along with the hardware to
secure it. Locate the handle and hardware and install as shown
Drive Roll
Tension Arm

INSTALLING A 8” SPOOL OF WIRE
3DRIVE ROLL REMOVAL 4
78
FEED WIRE - THREAD WIRE FEED WIRE - CLOSE TENSION ARM
11 12
FEED WIRE - REINSTALL TIP AND NOZZLE
Remove wing nut, washer and black bushing. Slide on spool
adapter. Reinstall bushing, washer and wing nut. Slide on 8”
spool of wire. Knob on spool adapter slides into hole on side of
8” spool of wire. See Step 12 to adjust wire spool tension.
This unit comes with the drive roll in place. If removal is needed,
turn drive roll cap counter clockwise 1/4 turn. Pull out to remove.
The drive roll will slide of drive shaft.
Feed the loose end of the wire through the Inlet Guide Tube, past
the drive roll and into the back of the MIG Gun. Keep tension on
the wire to prevent unspooling on the spool.
Close the drive roll tension arm. Apply tension to the wire by
turning the wing nut clockwise on the Drive Roll Tension Adjust-
ment. Do not overtighten. See Step 13.
Slide the correct size contact tip for the wire size you are using
over the end of the wire and tighten clockwise to secure. Thread
on nozzle and clip any excess wire.
Drive
Roll
8 In.
Spool
Adapter
Drive
Roll
Cap
Knob
Tension
Adjustment
ADJUSTING SPOOL TENSION
Adjust the wing nut in the center of the spool to adjust spool ten-
sion. A small amount of slack should be in the weld wire when
wire feeding stops. Too much tension will cause poor feeding.
Too little tension will cause the wire on the spool to uncoil.
Tighten
Clockwise

13 14
ADJUSTING DRIVE ROLL TENSION SETTING FRONT PANEL CONTROLS
Test drive roll tension by feeding wire into a gloved hand from
about 4 inches away. Loosen drive roll tension to apply little
pressure. Slowly increase drive roll tension until the wire coils up
in your hand without slipping in the drive rolls.
On the wire compartment access panel is a set-up guide. Find the
type of material being welded and the size of wire you are using.
Slide over to the thickness of the thinnest material you are weld-
ing. Set the voltage and wire feed speed on the front of the unit.
15 ATTACH GROUND CABLE TO WORK
Attach the ground cable to the welding table or work-piece.
Wire Feed Control
Voltage
Control