Lincoln Electric LN-25 User Manual download pdf (Page 16)

LN-25

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.

e. Press the gun trigger and push the electrode

until it just enters the drive roll.

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.

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.

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

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

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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Lincoln Electric LN-25 User Manual Page 16

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