Lincoln Electric IM677 RED-D-ARC LN-25 - Manual (Page 16)

LN-25
B-5 B-5
LOADING WIRE DRIVE
a. Turn the reel or spool until the free end of the
electrode is accessible.
b. While tightly holding the electrode, cut off the
bent end and straighten the first six inches. Cut
off the first inch. (If the electrode is not properly
straightened, it may not feed or may not go into
the outgoing guide tube causing a “bird nest”.)
c. Insert the free end through the incoming guide
tube to the drive roll.
d. Turn on the welding power source.
• Unless an optional output control or internal
contactor is used with the LN-25, the electrode
circuit is electrically “hot” when the power
source is on.
• When inching with gun trigger, the electrode
and drive mechanism are always “hot” to work
and ground. Use the “cold” inch switch on
models with internal contactor.
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e. Press the gun trigger and push the electrode
until it just enters the drive roll.
f. Inch the electrode through the gun.
g. Adjust the brake tension with the thumbscrew on
the spindle hub until the reel turns freely, but
with little or no overrun when wire feeding is
stopped. Do not over tighten.
Keep gun in LN-25 gun holder when not feeding
wire to prevent accidental arcing.
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IDLE ROLL PRESSURE SETTING
The idle roll pressure is set at the factory backed out
two turns from full pressure. This is an approximate
setting. For small wire sizes and aluminum wire, the
optimum idle roll pressure varies with type of wire,
surface condition, lubrication and hardness. The op-
timum idle roll setting can be determined as follows:
1. Press end of gun against a solid object that is
electrically isolated from the welder output.
Press the gun trigger for several seconds.
2. If the wire “bird nests,” jams or breaks at the
drive roll, the idle roll pressure is too great. Back
the pressure setting out
1 ⁄
2
turn, run new wire
through gun, and repeat above steps.
WARNING
CAUTION
OPERATION
2" O.D. SPINDLE
MOLDED ADAPTER
RETAINING SPRING
INSIDE CAGE WIRES
READI-REEL
GROOVES
BRAKE HOLDING PIN
(MUST ENGAGE HOLE IN
ADAPTER RIB)
THREAD LOCKING COLLAR
FIGURE B.2 READI-REEL INSTALLATION