Weld settings chart, Duty cycle (duration of use), Material thickness (steel) – Chicago Electric 90 AMP FLUX WIRE WELDER 68887 User Manual
Page 14: Min current max current
Page 14
For technical questions, please call 1-800-444-3353.
Item 68887
Weld Settings Chart
NOTE: The numbers within the
spaces are the approximate wire
feed settings recommended*
for this wire size and material
thickness.
Material Thickness (Steel)
18 Gauge 16 Gauge 14 Gauge
1
/
8
"
3
/
16
"
MIN current
MAX current
0.030″ Wire Size
(Flux-Core, Mild Steel)
1.5
speed
2
speed
4
speed
8
speed
9
speed
0.035″ Wire Size
(Flux-Core, Mild Steel)
1.5
speed
2
speed
3
speed
8
speed
9.5
speed
* This chart is only intended to show general guidelines for different wire sizes and for different
thicknesses of material. The settings should only be used at the beginning of a weld and must be
adjusted after stopping and carefully inspecting the weld. Proper welding takes experience.
Duty Cycle (Duration of Use)
Avoid damage to the Welder by not welding
for more than the prescribed duty cycle time.
The Duty Cycle defines the number of minutes, within
a 10 minute period, during which a given welder can
produce a particular welding current without overheating.
For example, this Welder with a 20% duty cycle at
rated output (90 A) must be allowed to rest for at
least 8 minutes after every 2 minutes of continuous weld.
Failure to carefully observe duty cycle limitations
can easily over-stress a welder’s power generation
system contributing to premature welder failure.
This Welder has an internal thermal protection
system to help prevent this sort of over-stress.
When the unit overheats, it automatically shuts
down and the Overload Indicator lights. The Welder
automatically returns to service after cooling off.
Rest the Gun on an electrically non-conductive,
heat-proof surface, such as a concrete slab, well
clear of the ground clamp while allowing the Welder
to cool with the Power Switch on, so that the internal
Fan will help cool the Welder. When the Welder can
be used again, use shorter welding periods and
longer rest periods to prevent needless wear.
20% Rated Duty Cycle
at 90 A output
2 minutes welding
followed by
at least 8 minutes of rest
ON
MIN
OFF
MAX
WIRE FEED SPEED
GUN
GROUND
120V~
60Hz
20A
90 AMP FLUX WIRE WELDER
ITEM 68887
Specifications
Wire
0.030" – 0.035" Flux-Core
Capacity 18 Ga. – 3/16" Steel Plate
Weldable
Materials
Mild, Low Alloy Steel
(Not for Aluminum or Stainless Steel)
Gun
concrete slab
(or other heat-proof,
non-conductive
surface)
SAFETY
MAINTENANCE
BASIC WELDING
WELDING TIPS
SETUP