Forney 140 MP Manuel utilisateur

Assemble top handle and bottom

supports. (Tools needed: screwdriver)

Attach gas bottle and regulator hose

assembly. (Tools needed: adjustable

wrench)

Use Process Selector Knob to select

desired process.

Adjust polarity for the stick electrode.

Disconnect MIG gun as it will be

electrically “hot” while Stick welding.

Adjust amperage.

Adjust hot start if needed.

Attach TIG torch and Foot Pedal if

desired.

Verify proper shielding gas is used

for TIG welding.

Disconnect MIG gun as it will be

electrically “hot” while Stick welding.

Adjust amperage.

* Torch & Foot Pedal sold seperately

WARNING: To prevent serious injury, read manual warnings and instructions before use.

140 MP WELDER QUICK START GUIDE

WARNING: To prevent fire and serious injury: Keep torch and wire clear of grounded objects while welder is plugged in. Be sure to

follow safe welding proceedures and wear proper PPE (clothes, welding helmet, safety glasses, welding gloves, boots, etc.)

STICKMIG TIG

(Most MIG shielding gases

will not work)

(Usually DCEP - Electrode

Positive).

Install wire spool.

Install MIG gun, turn it on, and

squeeze trigger until wire comes out.

Adjust wire feed tension.

Adjust wire feed speed and voltage

per chart on the inside of welder.

Verify drive rolls, liner and tips are

properly sized for desired wire

diameter.

Verify polority is set

correctly for MIG or

Flux-core welding wire.

Adjust

Tension

Knob

STICK WELDING TIPS

TIG WELDING TIPS

• Optimal stickout varies

by electrode type and

diameter but is usually

approximately 1/16”

• Provides higher

amperage at arc start

to prevent electrode

sticking

OPTIMAL STICKOUT HOT START

• Affects penetration and

bead width

• Can also affect spatter,

electode starting and

ability to weld vertical

or overhead

AMPERAGE

• Affects bead width

and height

• Can also affect

penetration

TRAVEL SPEED

1/16”

• Optimal stickout varies

by electrode type and

diameter but is usually

approximately 1/16”

• A scratch or lift Start is

often used to initiate

the arc

•

Try to minimize

electrode and tungsten

contamination

OPTIMAL STICKOUT ARC START

• Affects penetration and

bead width

• Amperage is often

referred to as “heat” in

TIG Welding

AMPERAGE

• Affects bead width and

height

•

Can also affect penetration

TRAVEL SPEED

1/16”

MIG WELDING TIPS

STICK WELDING TIPS

• Stickout

1/2

”

+/-

1/8

”

• Short stickout = more

current and more

penetration

• Affects the arc shape

• Less voltage = tighter

arc and potentially

more spatter

OPTIMAL STICKOUT VOLTAGE

• Higher wire feed speed

equals more amperage

• Can also affect arc

shape and penetration

WIRE FEED SPEED

(WFS)

• Affects bead width

and height

• Can also affect

penetration

TRAVEL SPEED

1/2”

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