Lincoln Electric K2950, K497 Liner Installation, Figure A.1 Magnum & Magnum PRO Curve 200 Guns

A-2 INSTALLATION A-2

c.For L-Tec machines that require lead connections to made at a terminal strip located within the machine (L-Tec 225), a gun control cable with forked terminals is provided. Connect the terminated leads to the terminal strip. For a machine that requires a twist-lock gun control cable connections, continue to use the L-Tec gun control cable provided with the L-Tec wire feeder connector assembly. Connect the twist-lock plug to the proper receptacle on the machine.

LINER INSTALLATION

a.Lay the gun and cable straight on a flat surface.

b.Make sure that the set screw in the connector end is backed out so as not to damage liner or liner bushing.

c.Insert a new untrimmed liner into the connector end of the cable. Be sure the liner bushing is stencilled appropriately for the wire size being used.

NOTE: For liners series KP44N and KP45N

Before fully seating the liner bushing, it will be necessary to trim the liner’s inner tube flush with the liner bushing using a sharp blade. After triming, remove any burrs from inner tube and insure that the opening is fully open.

d.Before installing the gas diffuser, fully seat the liner bushing in the connector and:

For K466-1, K466-2, K466-5 and K2950 tighten the set screw in the cable connector.

OR

For K466-3 and K466-4, screw in the connector cap provided in the kit until it seats on the face of the bushing. Then insert the appropriate piece of liner material into the connector cap and tighten the set screw. Three pieces of liner material are includ- ed in these connector kits to help guide the electrode through the connector cap. The piece with the smallest inner diameter is designed for .045 inch, (1.2 mm) maximum diameter electrode. The next largest diameter is for 1/16 inch (1.6 mm maximum diameter electrode. The largest diameter piece of liner material is for 5/64 inch (2.0 mm) maximum diameter electrode.

e.Be sure the cable is straight and then trim the liner to the length shown in Figure A.1 for K497 or Figure A.2 for K2950. Remove any burrs from the end of the liner.

f.Screw the gas diffuser onto the end of the gun tube and tighten with the wrench provided.

g.Tighten the set screw in the side of the gas diffuser against the cable liner using the Allen wrench provided. Note: Set screw is not found on Gun

Handle end of K2950.

CAUTION

The screw should only be gently tightened. Overtightening will split or collapse the liner and cause poor wire feeding.

FIGURE A.1

MAGNUM® & MAGNUM® PRO CURVE 200 GUNS