Lincoln Electric K498, Manual

Page: 10 / 22

B-2
OPERATION
B-2
ELECTRODES AND EQUIPMENT
The Magnum 200FM gun and cable has been
designed for use with Lincoln L-50 and L-56, solid
steel wire electrodes for the GMAW process and
Lincoln Outershield
® cored electrodes for the gas-
shielded FCAW process. Refer to the appropriate
Lincoln Process and Procedure Guidelines for the
electrode used for information on recommended elec-
trical and visible stickouts.
MAKING A WELD
a. Check that the welding power source is on and that
the shielding gas supply is set for the proper flow
rate.
b. Position electrode over joint. End of the electrode
should be slightly off the work.
c. Lower welding helmet, close gun trigger and begin
welding. Hold the gun so the contact tip to work
distance gives the correct electrical stickout as
required for the procedure being use.
d. To stop welding, release the gun trigger and then
pull the gun away from the work after the arc goes
out. Follow wire feeder instruction manual if using a
trigger interlock circuit.
AVOIDING WIRE FEEDING
PROBLEMS
Wire feeding problems can be avoided by observing
the following gun handling procedures:
a. Do not kink or pull cable around sharp corners.
b. Keep the electrode cable as straight as possible
when welding or loading electrode through cable.
c. Avoid wrapping excess cable around handle or
front of wire feeder.
d. Do not allow dolly wheels or trucks to run over
cables.
e. Keep cable clean by following maintenance instruc-
tions.
f. Use only clean, rust-free electrode. The Lincoln
electrodes have proper surface lubrication.
g. Replace contact tip when the arc starts to become
unstable or the contact tip end is fused or
deformed.
MAGNUM 200FM