Lincoln Electric GMA WIRE FEEDERS LN-7 Operator's Manual Page 39

Wire feeders (2 and 4 roll models).
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B-10
WIRE REEL LOADING – 50 AND 60 LB
COILS (K303 OR K376 WIRE REEL STAND)
ADJUSTABLE WIRE REEL BRAKE
The mount for standard 50 and 60 pound electrode
coils includes a two-position brake assembly.
Generally the brake should be at the inner position
(nearest to the wire reel shaft) for wire feed speeds
below 400 in./min (10 m/min). It should be at the outer
position for the faster wire speeds often used when
feeding smaller diameter electrode.
To adjust the brake position, remove the wire reel. Pull
the cotter pin that holds the brake shoe to the arm,
move the shoe and replace the cotter pin. Do not bend
the cotter pin - it is held in place by a friction fit.
TO MOUNT A 50 OR 60 LB COIL:
1. To remove the wire reel from its shaft, grasp the
spring loaded knob and pull out. This straightens
the knob so it seats into the shaft when released.
Remove the reel.
2. Lay the reel flat on the floor. Loosen the spinner
nut and remove the cover plate. See Figure B.6.
3. Place the coil of electrode on the reel so it
unwinds as the reel rotates clockwise. DO NOT
cut the tie wires at this time.
4. Be sure the coil is placed so the spring loaded
arms will not interfere with the later removal of the
coil tie wires.
5. When loading 0.030, 0.035, and 0.045" electrode,
be certain the coil is placed on the reel so the
spring loaded arms are at the center of the slots
in the cardboard coil liner. This provides the
positive compression of the coil sides needed for
trouble-free wire feeding.
6. Put the cover plate on the reel so the four arms of
the cover plate straddle and are in line with the
spring loaded arms of the reel.
7. Tighten the cover as much as possible by hand.
DO NOT hammer on the spinner nut arms.
OPERATION
Always be sure the free end of the coil is securely held
while the tie wires are being cut and until the wire is
feeding through the drive rolls. Failure to do this will
result in "back lashing" of the coil, which may tangle the
wire. A tangled coil will not feed. It must be untangled
or discarded.
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8. Cut and remove only the tie wire holding the free
end of the coil. Insert the free end into one of the
holes in the cover and secure it by bending it
back. Cut and remove the remaining tie wires.
9. Replace the reel on the wire feeder. Grasp the
shaft knob, pull it out and swing it across the reel
hub, locking the reel in place.
FIGURE B.6 – LOADING A 50 OR 60 LB COIL.
SPINNER
NUT
COVER
PLATE
COIL
REEL
LN-7 & LN-7 GMA
CAUTION
SLOTS
CARDBOARD
COIL
LINER
TIE WIRE
SPRING
LOADED
ARM
B-10

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