Forney 420 User manual

Connect to input power
* TIG Torch sold separately
4. 6.
Choose between High Frequency (HF) start
or Lift start.
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 MORE INFORMATION AT
FORNEYIND.COM
TIG TROUBLESHOOTING TIPS
Welder should be the only thing plugged into the circuit.
Frequently tripping circuit breaker or exceeding
duty cycle
TIG QUICK START GUIDE
220 AC/DC WELDER
ITEM# 420
Read user manual
Select process
2.
1.
EN_v1
TIG Torch Ground
Clamp
• Generator OK with continuous output >
5,000 W (120V) or 10,000 W (230V)
• Extension cord: #12 AWG (120V) or #8
AWG (230V) or larger. 25’ (8m) or shorter
extension cords recommended
To ensure maximum quality, always clean
and prepare welding surfaces.
Workpiece Preperation
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
Low weld output or poor fusion
• 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 3 conductor #8 AWG.
• Generators must be a minimum 10,000W continuous output with no low-idle
function (or low-idle off), 5% THD Max.
208-240V
• 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 3 conductor #12 AWG
or larger up to 25 feet
• Generators must be a minimum 5,000W continuous output with no low-idle function
(or low-idle off), 5% THD Max.
Low weld output or poor fusion
110-120V
QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038 [email protected]
forneyind.com

STICK TROUBLESHOOTING TIPS
*Performance may vary by brand
Connect to input power Recommended electrodes
4. 6.
Adjust amperage per
settings chart on the
welder
5.
Connect electrode
holder and ground
clamp according to
desired polarity
3.
Usually
DCEP -
Electrode
Positive
Use 3/16” diameter electrodes or smaller. Some 3/16” will draw too
much amperage.
Trying to weld single pass on material larger than 3/8” 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
STICK QUICK START GUIDE
220 AC/DC WELDER
ITEM# 420
Read user manual
Select process
2.
1.
EN_v1
Electrode Holder Ground
Clamp
Electrode Electrode Amperage
3/32” 1/8” 5/32”
E6010
E6011
E6013
E7014
E7018
E308L
Ni55
30-75 75-125 110-165
40-85
40-90
70-90
65-100
40-70
50-65
75-125
70-110
90-140
110-165
75-115
80-95
110-165
115-140
140-190
150-220
105-160
110-135
• Generator OK with continuous output >
5,000 W (120V) or 10,000 W (230V)
• Extension cord: #12 AWG (120V) or #8
AWG (230V) or larger. 25’ (8m) or shorter
extension cords recommended.
QUESTIONS OR TROUBLE? Contact Forney Industries at 1-800-521-6038 [email protected]
forneyind.com
To ensure maximum quality, always clean
and prepare welding surfaces.
Workpiece Preperation
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
• 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 3 conductor #12 AWG
or larger up to 25 feet.
• Generators must be a minimum 5,000W continuous output with no low-idle function
(or low-idle off), 5% THD Max.
Low weld output or poor fusion
110-120V
Low weld output or poor fusion
• 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 3 conductor #8 AWG.
• Generators must be a minimum 10,000W continuous output with no low-idle
function (or low-idle off), 5% THD Max.
208-240V
FIND MORE INFORMATION AT
FORNEYIND.COM