Miller Electric CST 250 - Manuel (Page 24)

OM-212 817 Page 20
4-2. Process Select Control
1 Process Select Control
Rotate knob to select desired
process.
Lift-Arct
TIG - Normal
open-circuit voltage is not present
between the electrode and
workpiece. A solid-state contactor
does not energize until after the
electrode touches the workpiece,
preventing overheating, sticking, or
contaminating the electrode (see
Section 4-4). Make connections
according to Section 3-7.
Stick E XX18 Soft - This setting
provides a lower dig/arc force
setting for smooth weld
perfromance. A stable weld puddle
with little arc “snap” gives excellent
weld bead appearance with
minimal spatter. Make connections
according to Section 3-8.
Stick E XX18 Stiff - This setting
provides a higher dig/arc force that
gives a slightly more fluid weld
puddle, more arc “snap”, and
reduces the potential for electrode
sticking at shorter arc lengths.
Make connections according to
Section 3-8.
Stick E XX10 Soft - This setting
provides lower dig/arc force for
open root vertical up joints or joints
that do not require additional
current for fit up inconsistencies.
Make connections according to
Section 3-8.
Stick E XX10 Stiff - This setting
provides a higher dig/arc force for
open root vertical down joints
where additional current is needed
to compensate for tight joint fit up
without the need to increase overall
welding current. Make connections
according to Section 3-8.
1
ELECTRODE
TYPE
SUGGESTED PROCESS
SETTING
EXXX1
EXXX2 EXX10
EXX10
EXXX3
EXXX4
EXXX5
EXXX6
EXXX7
EXXX8
STAINLESS
EXX18
EXX18
EXX18
EXX18
EXX18
EXX18
EXX18
RECOMMENDED PROCESS
SELECTIONS VS ELECTRODE TYPE