Mig, Gmaw, Fluxcore Wire (Fcaw) Manual Welding - Forney 140 MP Manuel D'utilisation

Starting the Arc with Lift Start:
• Fix the tungsten electrode so that it protrudes approximately ¼ inch from the torch nozzle.
• Position the torch so that the tungsten electrode is in contact with the work piece at a 45
degree angle.
• Press the torch trigger or the foot control and then lift the tungsten electrode away from the
work piece.
REMEMBER TO TURN OFF THE GAS IMMEDIATELY AFTER YOU FINISH WELDING.
MATERIAL
GAS
(Wire)
Regulation Knob
Solid Wire
Mild Steel
100% Argon

MIG, GMAW, Fluxcore Wire (FCAW) Manual Welding

Before connecting the unit to the mains, verify that all the accessories are correctly installed and
mounted for electric welding (torch, wire spool etc ...).
• Select Manual MIG (2T or 4T) Welding function with the Selector Switch (6) on the front
panel. Select either the 2-Step or 4-Step function of the torch trigger. 2-Step trigger turns
welding arc ON and OFF each time the trigger is pressed and released. Welding current
is ON when the torch trigger is pressed. 4-Step mode permits the operator to weld with the
torch trigger released. To start welding press the torch trigger and release. To stop welding
press and release the torch trigger. 4-Step mode helps the operator make long welds with
less fatigue.
• Switch the unit ON thru the ON/OFF switch (14) on the back side of the unit.
• Press the torch trigger to load the wire.
• Set the welding parameters:
1. Wire feed speed: Welding Current (AMPS) If "Local (20)" is selected use Left Knob (8) to
adjust the wire speed from 1 to 80 (maximum speed). If "Remote (20)" is selected use the
potentiometer of the Spool Gun torch to adjust wire speed.
2. Arc voltage: use the Right Knob to adjust arc voltage value (no load) from 10V to 24V.
• Bring the torch close to the work piece and press the trigger
1. Wire feeder Slope-Up Time (Min. to Max. speed transition time), adjustable with the
potentiometer located inside the access panel (17).
2. At the end of the Slope-Up Time, the wire feed speed reaches the value adjusted with the
Left knob (8).
• To stop welding, release the trigger. The arc stays ON accordingly to the set B.B.T. (Burn
back time). B.B.T. is the amount of time that the weld output continues after the wire stops
feeding. It prevents the wire from sticking in the puddle and prepares the end of the wire for
the following arc start.
24
140 MP TIG SET-UP CHART
TUNGSTEN
22 Gauge
ELECTRODE
.0315" (.8 mm)
ø
Left Knob
Stainless
Mild Steel
.040" (1.0 mm) 35-50
1/16" (1.6 mm) -
WWW.FORNEYIND.COM
MATERIAL THICKNESS
18 Gauge
.0236" (1.2 mm)
Left Knob
Stainless
Mild Steel
Steel Steel
20-35 45-60 30-55
- - -
16 Gauge 1/8" (3 mm)
1/16" (1.6 mm)
Left Knob
Stainless
Mild Steel Mild Steel
Steel
- - -
60-90 40-70 80-100
Left Knob
Stainless
Steel
-
65-100