Flux-Cored Welding With the Multimatic 220 AC/DC

Flux-Cored Welding With the Multimatic 220 AC/DC


Please take a few minutes to review important safety
information and tips for the Multimatic 220 AC/DC. And remember to wear
appropriate safety gear during setup and welding. The standard MIG gun provided
with your Multimatic 220 AC/DC is designed to run flux cord wire. But Miller suggests using the optional gasless flux cord nozzle
for welding flux cord wire. Now, let’s setup the Multimatic 220 AC/DC for the MIG process. First, make sure your
machine is powered off. Open the side door. Wrap the control cable
through the access hole in the front of the machine. Then, install the MIG gun
into the drive casting making sure it is completely
seated in the drive assembly. Tighten the gun connection
to the receptacle with the threaded side knob. Then, connect the control cable
to the four-pin connection. Twist the collar to tighten. Next, connect the work cable
to the bottom receptacle labeled work and turn
clockwise to tighten. With Quick-Tech, the machine
automatically determines the polarity for you. Now, the machine is setup to MIG weld. Remember, shielding gas is not required for flux-cored welding applications. Consult your local welding
distributor to determine which flux-cored wire is
best for your application. Connect the free end of the gas
hose to the MIG gas solenoid located on the back
panel of the Multimatic. Tighten with a wrench. Stainless steel welding
requires a tri-mix model of 90 percent helium, 7.5 percent
argon and 2.5 percent CO2 gas. Mild steel welding uses
either 75 percent argon and 25 percent CO2, or 100 percent CO2. 100 percent CO2 requires a gas regulator that is not shipped with this unit. Contact your authorized Miller distributor to order a CO2 flow gauge regulator. Now, configure the drive roll. The machine ships with the
drive roll set for .030 wire. However, if you plan to
adjust, push in and turn until the pin aligns with
the proper groove setting. The .024 groove is the outer most groove. The middle groove is for .030 or .035 wire, and the back groove, for flux cored or stainless steel welding. Next, install the spool of
wire and feed it through the inlet guide and
close the pressure lever. Note: the Multimatic 220
AC/DC is designed to feed wire from the top of the spool of wire. Using the process select arrows, select your MIG process. The MIG options on the
Multimatic include flux cord, make stainless, MIG steel
C25 and MIG steel C100. Prepare the gun by removing
the gun nozzle and contact tip. Then, turn the machine on. Now, hold the trigger of your MIG gun and feed out wire until it is visible. Re-install the contact tip and nozzle. Finally, check the drive roll pressure to ensure a trouble free weld. Place your gun tip over
an insulated surface, like this wood block, and feed the wire until it
feeds consistently and curls under the wood without slipping. Adjust the tension as needed. Snip the wire, then close the side door. Finally, select the wire
diameter and material thickness if you are using the
Auto-Set Elite feature. Or if you are usual manual mode, adjust your voltage and wire feed speed. As a guide, a parameter chart is located inside the side door. Setting up your Multimatic 220 AC/DC to MIG weld is as simple as that.

7 thoughts on “Flux-Cored Welding With the Multimatic 220 AC/DC

  1. Yo ya compre la máquina. Pero surge un problema. Después de soldar con spoolmate 100 aluminio se quedó el dibujo de la pistola en la pantalla por más que cambie a flaco cored o a mig la pantalla se queda con el dibujo de spoolmate.
    Trate de borrar el icono de la pantalla pero no se puede.

  2. Love ❤️ the tip about drive roller pressure using a wood board to insulate and determine if your wire pressure is correct. I’m new to welding and I’m going to use the technique on my LE MP210. I’ve had a heck of a time getting it set up to practice beads. Thanks Miller. Maybe I buy this one too

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