Lincoln Electric IM311-E manual Operation, Product Description, Loading the Wire Reel

B-1 OPERATION B-1

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts such as output terminals or internal wiring.

•When inching with gun trigger, electrode and drive mechanism are “hot” to work and ground and could remain energized several seconds after the gun trigger is released.

•Turn OFF input power at welding power source before installation or changing drive roll and/or guide tubes.

•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

•Only qualified personnel should perform this installation.

------------------------------------------------------------------------

PRODUCT DESCRIPTION

The K316L-[ ] / LN™-23P is a lightweight, portable wire feed unit which includes calibrated wire speed control, voltage con- trol, wire drive with enclosed 14 lb. wire reel, analog voltmeter and various input control and electrode cable lengths.

The LN™-23P was designed specifically for Innershield pipe welding, but, with the proper electrode, can be utilized for gen- eral purpose welding.

The feeder is designed for welding with 14 pound coils of .068 and 5/64 Innershield self-shielding electrodes using a constant voltage (CV) type DC power Source. When shipped, it is inter- nally connected for welding with electrode negative polarity (DC–). Depending upon which gun and cable is used, its rating is either 350 amps or 250 amps at 60% duty cycle.

The wire speed control has a calibrated dial plate with a range of 30 to 170 inches per minute which allows quick and easy set- ting of the required wire feed speed. The wire speed is not affected by changes in the arc voltage setting even though the wire feed circuit is powered by arc voltage. A two-position switch, mounted on the gun provides a reduced speed circuit. This allows selection of either the preset wire speed or 83% of the preset speed.

A low voltage gun trigger circuit turns both the power source output and wire feed on and off. The gun trigger circuit is inter- locked by a weld current sensing reed switch so that while weld- ing, the gun trigger switch does not have to be held closed. The welding process is stopped by pulling the gun away from the work. The electrode remains cold until the gun trigger is operat- ed again.

The LN™-23P voltage control is used to adjust the power source output. Also included is an analog voltmeter which allows easy setting of the arc voltage at the LN™-23P once the arc is established.

LOADING THE WIRE REEL

(For machines that have code numbers Lower than 11383.)

•Lay the LN™-23P flat with the wire reel cover up, unclip the rubber retaining strap, and remove the cover.

•Remove the center clamping nut and the cover plate from the wire reel.

•Unpack the 14-pound coil of wire. Be sure not to bend the side tangs of the coil liner and straighten any tangs that may have been bent.

•Place the coil on the wire reel so the coil will unwind when it rotates in a clockwise direction.

•Remove the start end of the coil from its holding slot in the coil liner, cut off the bent end, straighten the first few inches and thread it through the wire feed conduit connected to the wire enclosure until several inches of electrode are exposed. Be careful not to release the electrode until it is through the wire feed conduit; otherwise, it will unwind and tangle.

•Be sure all the lower tangs of the coil liner are flush against the back half of the wire reel and that none of the upper tangs are bent in against the coil.

•Replace the reel cover plate and the center clamping nut.

•Replace the cover of the wire reel enclosure and clip the retaining strap in place.

•Pull about 2 feet of the exposed end of the electrode through the wire feed conduit. Slide the insulator all the way up on the wire feed conduit.

Make a single, free loop in the electrode and feed the end into the section of wire feed conduit connect- ed to the gearbox. Press the gun trigger and push the electrode into the drive rolls. Release the elec- trode as soon as it is picked up by the drive rolls. Continue feeding electrode until the excess length is fed through the drive rolls. Watch the single loop and guide it if necessary to make certain it untwists with- out kinking. Do not feed electrode through the gun cable at this time. Slide the insulator down on wire feed conduit until it slips over section of conduit con- nected to gearbox.

•Set the unit upright on floor, straighten the gun cable, press the gun trigger, and feed electrode though the gun and cable assembly.

LN™-23P