Lincoln Electric IM616 K1614-12 & -13 MAGNUM 250 NR FM Fast-Mate Gun and Cable - Manual (Page 12)

E-1 MAINTENANCE E-1
LINER INSTALLATION AND TRIMMING
INSTRUCTIONS
a) Lay the gun and cable out straight on a flat surface.
b) Remove and save the nozzle and nozzle insulator
from the end of the gun tube assembly.
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.
d) Before installing the gas less diffuser, fully seat the
liner bushing in the connector and install liner nut
and finger tighten.
e) Be sure the cable is straight and then trim the liner
to the length shown in Table E.1 and FigureE.1(a
gauge is included on the wrench provided with the
connection kit for gauging the cutoff length on gun
tubes). Remove any burrs from the end of the liner.
f) Screw the gas less diffuser onto the end of the gun
tube and tighten it.
TABLE E.1
MAINTENANCE
REMOVAL INSTRUCTIONS FOR MAGNUM
LINERS
NOTE: The variation in cable lengths prevents the
interchangeability of liners. Once a liner has been cut
for a particular gun, it should not be installed in anoth-
er gun, unless it can meet the liner cut off length
requirement. Liners are shipped with the jacket of the
liner extended the proper amount.
a. Remove the nozzle insulator.
b. Remove the gas less diffuser from gun.
c. Lay gun and cable out straight on a flat surface.
d. Remove the liner nut from the connector end of the
cable and pull liner out of cable.
e. See Liner Installation and Trimming instructions.
GUN TUBES AND NOZZLES
a) Replace worn contact tips as required.
b) Remove spatter from the tip after each 10 minutes
of arc time or as required.
c) To remove the gun tube from the gun, loosen the
socket-head clamping screw in the handle with the
3/16” (4.8 mm) Allen wrench. Remove the nozzle
insulator and gas less diffuser.
Pull the gun tube out from the gun handle. To rein-
stall, insert the gun tube, push in as far as possible,
and retighten the screws.
GUN CABLES
CABLE CLEANING
Clean the cable liner after using approximately 300
pounds (136 kg) of electrode. Remove the cable from
the wire feeder and lay it out straight on the floor.
Remove the contact tip from the gun. Using an air hose
and only partial pressure, gently blow out the cable
liner from the diffuser end.
Excessive pressure at the start may cause the dirt
to form a plug.
------------------------------------------------------------------------
Flex the cable over its entire length and again blow out
the cable. Repeat this procedure until no further dirt
comes out.
MAGNUM® 250 NR FM
Connection Liner Trim
Gun Description Type Length
K1614-All Fast Mate 9/16 (14.3 mm)
FAST-MATE
&
LINER NUT
CONNECTIONS
LINER ASSEMBLY (LINER BUSHING
TO BE TIGHTLY SEATED)
LINER NUT
GAS LESS DIFFUSER
NOZZLE INSULATOR
LINER TRIM
LENGTH
(SEE TABLE E.1)
FIGURE E.1
CAUTION