Setup For Mig (Gmaw) Welding With Gas Shielded Mig Wire - Firepower MST 180i Operating Manual

3.20 Setup for MIG (GMAW) Welding with Gas Shielded MIG Wire

A. Select MIG mode with the process selection control. (Refer to Section 3.10 for further information)
B. Connect the MIG Gun Polarity Lead to the positive welding terminal (+). If in doubt, consult the electrode wire manufacturer.
Welding current flows from the Power Source via heavy duty bayonet type terminals. It is essential, however, that the
male plug is inserted and turned securely to achieve a sound electrical connection.
C. Fit the MIG Gun to the Power Source. (Refer to section 3.07 Attaching the Firepower 180A MIG Gun).
D. Connect the work lead to the negative welding terminal (-). If in doubt, consult the electrode wire manufacturer. Welding
current flows from the Power Source via heavy duty bayonet type terminals. It is essential, however, that the male plug
is inserted and turned securely to achieve a sound electrical connection.
E. Fit the gas regulator/flow gauge to the shielding gas cylinder (refer to Section 3.14) then connect the shielding gas hose
from the rear of the Power Source to the regulator/flow gauge outlet.
F. Refer to the Weld Guide located on the inside of the wirefeed compartment door for further information.
G. Switch the LOCAL/REMOTE switch inside the wire feed
compartment to LOCAL to use the Power Sources Wirespeed and
Voltage controls.
H. Switch the MIG GUN/SPOOL GUN switch inside
the wire feed compartment to MIG GUN.
Before connecting the work clamp to the work make sure the Electricity Supply is switched OFF.
Secure the welding grade shielding gas cylinder in an upright position by chaining it to a suitable stationary support
to prevent falling or tipping.
Loose welding terminal connections can cause overheating and result in the male plug being fused in the terminal.
Remove any packaging material prior to use. Do not block the air vents at the front or rear of the Welding Power
Source.
MIG Gun
Manual 0-5339
!
Positive Welding
Terminal (+)
MIG Gun
Polarity Lead
Work Lead
Figure 3-16: Setup for MIG Welding with Gas Shielded MIG Wire
WARNING
CAUTION
Secure the gas cylinder
in an upright position
by chaining it to a
stationary support to
prevent falling or tipping.
Negative Welding
Terminal (-)
Primary Cord
3-19
Firepower MST 180i
Art # A-12520
Connect Shielding Gas
Hose to regulator
INSTALLATION, OPERATION AND SETUP