Tweco FP-165 Mini MIG Portable MIG Welder - Manual (Page 35)

FIREpOwER Fp-125, 135, 165 OpERATION
Manual 0-5123 4-4 Operation
4.03 Gas Metal Arc Welding (GMAW)
See Welding Guidelines included in this manual.
Make all necessary connections as instructed in the IN-
STALLATION chapter.
Place the WELD VOLTAGE RANGE SWITCH at the desired
setting.
CAUTION
Do not turn the WELD VOLTAGE RANGE SWITCH
clockwise past position 4, as damage to the switch
may occur.
Plug the supply cord into a 120 VAC 40 Ampere recep-
tacle for the FP-125, 120 VAC 50 Ampere receptacle for
the 135 and into a 230 VAC 30 Ampere receptacle for the
FP-165.
Open the gas cylinder valve to supply shielding gas to the
gun. (optional gas regulator required on the FP-125)
Connect the WORK CLAMP to the workpiece (material
to be welded).
Rotate the WIRE SPEED control to the desired setting.
Extend wire from the gun, and cut to proper stick-out
for that type of wire (when welding always maintain this
distance).
Position gun to where it is at approximately right angles
to the workpiece with proper wire stick-out. Lower your
welding helmet and pull the gun trigger switch.
!
WARNING
Be sure to put on proper protective clothing and eye safe-
guards (welding coat, apron, gloves, and welding helmet
with proper lenses installed). See Safety Instructions and
Warnings chapter included in this manual. Neglect of
these precautions may result in personal injury.
Travel at a speed necessary to maintain a bead width from
1/8" to ¼" (3mm to 6mm) depending on the thickness of
the material. For material that may require larger weld-
ments, either change to a larger diameter filler wire or use
multi pass beads. On some applications, it may be neces-
sary to adjust the voltage range to stabilize the arc.
Upon completion of the weld, release the gun trigger
switch, raise the welding helmet, and visually examine
the weld.
NOTE
To help you overcome any problems that might arise,
you will find useful information in section 4.06 Basic
Welding Techniques.
4.04 Flux Cored Arc Welding (FCAW)
Follow the same general procedure as with the GMAW pro-
cess above. Shielding gas is not required for self shielded
type wires. For differences in the process see section 4.06
Basic Welding Techniques. Also included is information to
solve any problem related to the FCAW process.
4.05 Shutdown Procedures
Close the cylinder valve (GMAW process only). Press gun
switch to vent gas line (GMAW process only). Place the
POWER ON/OFF SWITCH in the OFF position.
!
WARNING
After releasing the gun switch, the electrode wire will
remain electrically “hot” for several seconds.