Forney 140 MP Manual de usuario
Adjust wire feed
speed ( ) and
voltage ( )
Flux-
cored
* Face the appropriate groove
towards the inside of machine
Set drive roll
Solid
wire
• Generator OK with continuous output >
4,000 W
• Extension cord: #12 AWG or larger;
25’ (8m) or shorter
120VAC, 20A
outlet, 30A breaker
recommended
Connect to Input Power
With contact tip
1/4” from metal,
depress trigger
completely to
initiate arc
Install wire spool
0.023” (0.6mm) - 0.030” (0.8mm) diameter
8” (200mm)
wire spool
4” (100mm)
wire spool
Feed wire and set pressure
Knob set ~2-3
marks
Remove
consumables
and depress
trigger until
wire comes out.
Replace
consumables.
See chart on welder
for correct settings
FIND MIG WELDING TIPS AT WWW.ASKFORNEY.COM
4. 5. 6.
7.
9. 10. 11.
8.
Connect MIG gun and ground clamp
QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038
MIG QUICK START GUIDE
140 MP WELDER (NOT RECOMMENDED FOR ALUMINUM)
CAT# 271
Set polarity for MIG (Solid wire)
or Flux-cored
Solid wire Flux-cored
Read user manual
2.
3.
1.
Select process
Pressure knob
EN_v1-4
NOTE: If using gas:
2. Attach hose to
regulator and
regulator to
gas bottle.
1. Attach gas hose
to machine.
MIG Gun
Ground
Clamp
MIG TROUBLESHOOTING TIPS
Verify machine is plugged in and on.
See manual.
Both LED lights off
Improper wire spool installation
Use wire with a diameter between 0.023” (0.6mm) and 0.030” (0.8mm). Larger diameters draw too much amperage.
Trying to weld single pass on material larger than ¼” (6mm) thick is not possible with this machine. Multi-pass recommended for thicker materials.
Welder should be the only thing plugged into the circuit.
• Usually due to low input power.
• Welder should be only thing plugged into circuit.
• Avoid using extension cords. If one must be used, it must be #12 AWG or larger; 25’ (8m) or shorter.
• Generators must be 4,000 W continuous output and not have a low-idle function (or have it disabled).
Frequently tripping circuit breaker or exceeding duty cycle
Low weld output or poor fusion
• Not recommended for this machine.
• Requires more amperage on MIG than this
machine is designed to output.
Wire from spool to drive should relax with a slight curve after feeding.
• Can cause feed issues and inconsistent weld quality.
• Verify all parts are in the proper place. Refer to manual.
Aluminum welding
Too much spool tension
Knob set ~2-3 marks
Too little pressure = Roll can slip and feed can
be erratic
Too much pressure = can crush wire, causing
wire feeding problems and welder damage
Incorrect drive roll pressure
8” (200mm) wire spool 4” (100mm) wire spool
Trigger must be pulled to initiate the arc. This
will initiate the arc and begin feeding the wire.
DEPRESS THE TRIGGER COMPLETELY
No arc start on contact
• Can cause feed and weld issues and
arc instability.
• Each component must be sized for
wire diameter used.
Mismatched drive roll, liner, or
contact tip size
Duty cycle exceeded or
insufficient air flow. Allow
machine to cool. Ensure vents are
clear of obstacles. See manual.
Both LED lights on
Connect ground clamp to clean, bare
metal. No rust, paint or other
coatings. Attach the ground clamp
directly to the workpiece if you are
experiencing issues.
Workpiece grounding
EN_v1-4
• Generator OK with continuous
output > 4,000 W
• Extension cord: #12 AWG or
larger; 25’ (8m) or shorter
120VAC, 20A
outlet, 30A breaker
recommended
Connect to Input Power
* TIG Torch sold separately
4. 6.
Initiate the arc with a scratch or lift
technique when in contact with the metal
7.
Adjust amperage per
material thickness
Connect TIG torch lead
to gas (100% Argon)
5.
Connect TIG torch and
ground clamp
3.
ELECTRODE IS ALWAYS ELECTRICALLY
HOT WHILE IN TIG MODE
FIND TIG WELDING TIPS AT
WWW.ASKFORNEY.COM
TIG TROUBLESHOOTING TIPS
QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038
Verify machine is plugged in and on.
See manual.
Both LED lights off
Duty cycle exceeded or
insufficient air flow. Allow
machine to cool. Ensure vents are
clear of obstacles. See manual.
Both LED lights on
• Usually due to low input power.
• Welder should be only thing plugged into circuit.
• Avoid using extension cords. If one must be used, it must be #12 AWG
or larger; 25’ (8m) or shorter.
• Generators must be 4,000 W continuous output and not have a
low-idle function (or have it disabled).
Low weld output or poor fusion
Welder should be the only thing plugged into the circuit.
Frequently tripping circuit breaker or exceeding
duty cycle
Connect ground clamp to clean, bare metal. No
rust, paint or other coatings. Attach the ground
clamp directly to the workpiece if you are
experiencing issues.
Workpiece grounding
• Not recommended for this machine.
• Output is DC only which is not recommended for TIG
welding aluminum.
Aluminum welding
TIG QUICK START GUIDE
140 MP WELDER (NOT RECOMMENDED FOR ALUMINUM)
CAT# 271
Read user manual
Select process
2.
1.
DC
ONLY
EN_v1-4
TIG Torch
Ground
Clamp
STICK TROUBLESHOOTING TIPS
QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038
• Generator OK with continuous
output > 4,000 W
• Extension cord: #12 AWG or
larger; 25’ (8m) or shorter
120VAC, 20A
outlet, 30A breaker
recommended
*Performance may vary by brand
Connect to Input Power Recommended electrodes
4. 6.
FIND STICK WELDING TIPS AT WWW.ASKFORNEY.COM
Adjust amperage per
chart on the inside of
the welder
5.
Electrode Diameter
5/64” 3/32” 1/8”
E6010
X
E6011
E6013
E7014
E7018
X
E308L
Ni55
Connect electrode
holder and ground
clamp according to
desired polarity
3.
Usually
DCEP -
Electrode
Positive
Verify machine is plugged in and on.
See manual.
Both LED lights off
Duty cycle exceeded or
insufficient air flow. Allow
machine to cool. Ensure vents are
clear of obstacles. See manual.
Both LED lights on
• Usually due to low input power.
• Welder should be only thing plugged into circuit.
• Avoid using extension cords. If one must be used, it must be #12 AWG
or larger; 25’ (8m) or shorter.
• Generators must be 4,000 W continuous output and not have a
low-idle function (or have it disabled).
Low weld output or poor fusion
Use 1/8” diameter electrodes or smaller. Some 1/8” may draw too
much amperage.
Trying to weld single pass on material larger than ¼” thick is not
possible with this machine. Multi-pass recommended for thicker
materials.
Welder should be the only thing plugged into the circuit.
Frequently tripping circuit breaker or exceeding
duty cycle
Connect ground clamp to clean, bare metal. No
rust, paint or other coatings. Attach the ground
clamp directly to the workpiece if you are
experiencing issues.
Workpiece grounding
• Not recommended for this machine.
• Requires more amperage on Stick than this machine is designed to output.
STICK QUICK START GUIDE
140 MP WELDER (NOT RECOMMENDED FOR ALUMINUM)
CAT# 271
Read user manual
Select process
2.
1.
Aluminum welding
EN_v1-4
Electrode Holder
Ground
Clamp
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2
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