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  9. Forney 140 MP User manual

Forney 140 MP User manual

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1
Assemble top handle and bottom
supports. (Tools needed: screwdriver)
2
Attach gas bottle and regulator hose
assembly. (Tools needed: adjustable
wrench)
3
Use Process Selector Knob to select
desired process.
1
Adjust polarity for the stick electrode.
2
Disconnect MIG gun as it will be
electrically “hot” while Stick welding.
3
Adjust amperage.
4
Adjust hot start if needed.
1
Attach TIG torch and Foot Pedal if
desired.
2
Verify proper shielding gas is used
for TIG welding.
3
Disconnect MIG gun as it will be
electrically “hot” while Stick welding.
4
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).
1
Install wire spool.
2
Install MIG gun, turn it on, and
squeeze trigger until wire comes out.
3
Adjust wire feed tension.
4
Adjust wire feed speed and voltage
per chart on the inside of welder.
5
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”