19
Setup Guide
SELECT THE PROPER TUNGSTEN SIZE AND START AMPS.
The key to obtaining good, picture-perfect arc starts is to use properly
sized and ground Tungsten. A properly sized Tungsten, combined with
correct sharpening technique will display the best arc characteristics. An
undersized tungsten will tend to ball at higher amperages, especially if the
tip is too sharp for the application. A larger Tungsten will be more difcult
to start at lower amps, regardless of grind shape. A contaminated Tung-
sten, will cause no-starts, irregular starts, and wandering arcs.
The design of this unit limits the low Amp start of the welder based off the
Tungsten diameter size selected on the screen. This Start Amperage is
independent of the normal Welding Amps and even the tail-out (End Am-
perage) settings. In fact, the Welding Amps and the End Amps are actually
able to be set lower than the Start Amp setting (when not in the “Manual”
mode). The intent of this limitation is to create an optimized “surge” start
parameter for the Tungsten selected so that it starts quickly and reliably
with average user skill and knowledge. It is not designed to provide the
lowest possible Amperage start for the selected Tungsten size. Each in-
crease in Tungsten diameter raises the minimum allowed Start Amp set-
ting. The range of diameter in Tungsten sizes that are selectable under the
Tungsten function, are .040” (1.0mm), 1/16” (1.6mm), 3/32” (2.4mm), and
1/8” (3.2mm).
In addition to the selectable Tungsten size function, the machine includes
a “Manual” setting in the Tungsten size function to override the low Amp
limits and allow a full range of Amperage. The “Manual” selection should
be used to allow the full range of Starting Amperage if customer is using a
small .020” (.5mm) diameter Tungsten. It may also be used with a larger
diameter Tungsten if the user desires complete control over the start Am-
perage. Selecting the “Manual” setting allows the unit to be set at a mini-
mum TIG start of 2 Amps on DC and 3 Amps on AC. Keep in mind this
may not provide optimal start characteristics for larger diameter Tungsten
but it does allow the user to try. Manipulating the Start/Surge settings of
the electronic HF/HV settings in the background menu may improve the
low Amp starts with larger diameter Tungsten sizes as well. However, it
may also increase the chance of blow-through on thin materials by provid-
ing too forceful of a start.
Getting Started
What Size Tungsten Do I Use?
Everlast advertises low arc start capability on this. The Start Amperage of
the arc is quite low. However, when starting an arc, all TIG welders have
a momentary surge Amperage to ignite the arc, lasting just milliseconds.
This brief surge (up to 40 or 50 Amps) of Ignition Amperage is usually
kept from displaying in most brands of TIG welders. This very quick
surge ensures good arc starting. However, if the surge it is set too high,
it can blow through thin materials before the arc is established and the
unit transitions to the Start Amp setting. Everlast has kept the Ignition
Amps surge to a range that has tested best for clean starting. However,
when welding with thicker tungsten like 1/8”, arc starts may appear
“soft” and not forceful enough to start cleanly. If the arc starting is not
smooth or quick, the surge Amperage can be raised or the intensity of
the HF electronic start can be adjusted in the background menu. This
will help to clean up and improve the arc start. NOTICE: The Surge
Amps and the Start Amps are not the same thing. Starting Amperage is
the stage after the arc transitions from the Ignition surge and stabilizes.
For best results, when low amp starts are needed for welding thin gauge
materials, use a 1/16” diameter Tungsten for most light gauge materials.
For thin materials under 20 gauge use a .040” diameter tungsten or
even a .020” diameter tungsten for maximum control. Arc starts will
then be clean and crisp on thin materials. Keep in mind though that
small diameter tungsten will rapidly consume at higher Amperages.
The tungsten type, tip angle and grind preparation will ultimately affect
amperage carrying and arc starting capability of the tungsten. The ma-
chine wave form and other AC settings can also affect it. Each type of
Tungsten blend will also vary in amperage handling capability. In gen-
eral, consider the following for selecting your tungsten diameter. The list
below is not the absolute maximum range of the Tungsten, but a reliable
recommended range. It is a good practice when you approach the max-
imum limit of the Tungsten’s capability in terms of amperage, that you
switch to the next size up for best point retention and arc characteristics.
AC operation can reduce tungsten amperage capability. The setting of
the AC balance and AC frequency has an effect on tungsten point hold-
ing capability. Too much cleaning (over 40% EP) will over heat the
tungsten and ball it. Lower frequencies tend to places more heat on the
tungsten as well. But in general, for AC and DC operation, consider
using the following sizes for the ranges following:
• 2-15A: .020” (.5mm)
• 3-30A: 40” (1mm)
• 10-70A: 1/16” (1.6mm)
• 15-200A: 3/32” (2.4mm)
• 20-300+ A 1/8” (3.2mm) 20-300+A
NOTE: Starter kit does not include .020” (.5mm) or .040” (1mm) collets
or collet bodies. These can be purchased locally or online.