Forney 140 MP - TIG Welding Setup; TIG Setup Without Foot Control; TIG Setup With Foot Control; Starting the Arc with Lift Start

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• Select the TIG function on the control panel with knob (6).
• Choose LOCAL with switch (20).
• Connect the TIG torch cable to the negative Dinse socket (9) of the welder.
• Connect the ground cable connector to the positive Dinse socket (10) of the welder.
• Connect the TIG torch control cable to the 7 pin connector (12).
• Connect the TIG torch gas line to the gas regulator, ARGON GAS ONLY
The gas flow is manually controlled with the knob on the TIG torch. Use inert gas
(argon ) only.
• Switch the unit on thru the ON/OFF switch (14).
• Select the TIG function on the control panel with knob (6).
• Choose REMOTE with switch (20).
• Connect the TIG torch cable to the negative Dinse socket (9) of the welder.
• Connect the ground cable connector to the positive Dinse socket (10) of the welder.
• Connect the Foot Control cable to the 7 pin connector (12)
• Connect the TIG torch gas line to the gas regulator ARGON GAS ONLY.
Turn on gas at the gas regulator, then open the valve on the torch handle and check
for gas flow.
• 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.
Regulation Knob
Left Knob Left Knob Left Knob Left Knob
Mild Steel
Stainless
Steel
Mild Steel
Stainless
Steel
Mild Steel
Stainless
Steel
Mild Steel
Stainless
Steel
Mild Steel
Solid Wire
100% Argon
.040” (1.0 mm) 35-50 20-35 45-60 30-55 - - - -
1/16” (1.6 mm) - - - - 60-90 40-70 80-100 65-100
MATERIAL
(Wire)
GAS
TUNGSTEN
ELECTRODE
ø
MATERIAL THICKNESS
22 Gauge
.0315” (.8 mm)
18 Gauge
.0236” (1.2 mm)
16 Gauge
1/16” (1.6 mm)
1/8” (3 mm)
140 MP TIG SET-UP CHART
TIG Welding, “GTAW” with Lift Start
Setting up the Equipment for TIG Welding, “GTAW” with NO Foot Control:
Setting up the Equipment for TIG Welding, “GTAW using a Foot Control:
Close the Gas Valve on the Torch Handle:
Starting the Arc with Lift Start: