Gun and cable assemblies, A-18, Handling procedures – Lincoln Electric LN-8 SVM132-A User Manual
Page 24: Installation
A-18
INSTALLATION
LN-8
A-18
GUN AND CABLE ASSEMBLIES
GENERAL
The LN-8 is used with various guns. In all cases, the
gun is shipped connected to the cable and is ready to
weld. Use the gun recommended for the wire type
(solid or cored) and size to be used. See the para-
graph on
for more information on the different types of guns.
GUN CABLE CONNECTIONS
Lay the cable out straight. Insert the male end of the
welding conductor cable into the brass block on the
front of the LN-8. Make sure it is in all the way and
tighten the locking screw with a 3/16 in. Allen wrench.
Keep this connection clean and bright. Connect the
control cable polarized plug into the receptacle next to
the coupling.
HANDLING PROCEDURES
1. Do not kink or pull the cable around sharp
corners.
2. Keep the electrode cable as straight as practical
when welding or starting the electrode through
the cable.
3. Do not allow dolly wheels or trucks to run over the
cables.
4. Keep the cable clean by following the
maintenance instructions.
5. Use only clean, rust-free electrode wire.
6. Replace contact tip when the arc starts to become
unstable or the contact tip end is fused or
deformed.
LN-8S AND LN-8SE CONTINUOUS
FLUX FEED (SUBMERGED ARC)
Connect the loose end of the hose to the tube at the
back end of the welding gun. Tighten the hose clamp.
If the hose is taped to the gun cable, be sure it is not
collapsed or deformed as this could cause flux feed-
ing problems.
The air for the automatic flux feeding system is
obtained from the regular plant compressed air sys-
tem, providing the plant system pressure is between
60 and 120 psi (414 and 827 kPa). The tank is
equipped with a pressure regulator to reduce the input
pressure to the 30 psi (207 kPa) required for the flux
feeding system. This pressure is set at the factory
before the machine is shipped. When the LN-8SE
with the 22-1/2 or 45 ft. (6.9 or 13.7 m) extension is
used, and the flux hose is long, set the air pressure at
45 psi (310 kPa) for 1/2 in. (12 mm) I.D. hose, and 55
psi (379 kPa) for 3/8 in. (9.5 mm) I.D. hose. Exact
pressure is indicated on the pressure gage. Air con-
sumption is normally less than 1.5 cubic feet
(4.2 cubic meters) per minute of welding.
Connect the input air hose to the street elbow located
at the right side of the flux tank. A quick disconnect
should be installed between the elbow and the input
hose.
The air tank is equipped with a water and dirt separa-
tor. Water separated from the input air feeds down
through the long flux filled tube located at the input
connection. It is exhausted from the system through
the coiled tube below the flux tank. There is always a
small amount of air and possibly water coming out of
the end of this tube.