Welding Process Selection For Str 450 C - Miller Electric STR 350C Owner's Manual

4-2.

Welding Process Selection For STR 450 C

2
1
Switch Setting
TIG Lift-Arc
TIG-Remote
CC-Remote
Stick
OM-249 914 Page 18
3 4
Output ON/Off Control Status
Output On/Off Control
Through Remote 14 receptacle. Remote on/off switch required.
Through Remote 14 receptacle. Remote on/off switch required.
1
Use control to select weld process.
The weld process selected determ-
ines weld output on/off control. See
Table below.
5
!
2
6
3
4
5
6
This is an air Stick welding holder
which uses gouging electrodes for air
carbon arc metal removal process.
.
Electrode always energized (Hot).
Electrode always energized (Hot).
Welding Process Selection
Control (Contactor)
Weld output terminals are en-
ergized when welding precess
selection control is in the TIG
Lift-Arc or Stick positions.
TIG Lift-Arc − This is a DCEN
(direct current electrode
negative) process in which the
electrode must come in contact
with work piece to initiate an
arc(see Section 4-9). Make
connections according to
Section 3-11.
TIG - (Remote) − This is a
GTAW process. Make
connections according to
Section 3-11.
CC - (Remote) − This is a
DCEP (direct current electrode
positive) process. Make
connections according to
Section 3-10.
Stick - (SMAW) − This is a
DCEP (direct current electrode
positive) process. Make
connections according to
Section 3-10.
Stick Gouging
When Stick is selected, use arc
force (DIG) control to increase
SMAW short-circuit amperage at
low arc voltage. This allows the
operator to use a very short arc
length without sticking the elec-
trode.