Hobart Welding Products 150 STI - Manual (Page 15)

OM-951 Page 13
5-2. Process Selection
1 Process Selector Switch Pad
Use control to select required welding
process. Press switch pad until LED
for desired process is illuminated.
2
Lift Arct Start
When selected, a TIG arc starting
method in which the electrode must
come in contact with the workpiece to
initiate an arc is activated (see Section
5-3).
3
Stick (SMAW)
When selected, Adaptive Hot Start
and DIG circuitry are energized.
4
Lift Arct Start (Remote)
A TIG starting method in which the
electrode must come in contact with
the work and a closure from pin 1 to pin
2 on the remote receptacle (see Sec-
tion 4-6) is required to initiate an arc.
1
Press Press
2
3
=Light Off =Light On
Press
4
5-3. Lift-Arc ™
Lift-Arc Start
1
TIG Electrode
2 Workpiece
Touch tungsten electrode to work-
piece, hold for 1-2 seconds, slowly
lift electrode, and an arc forms.
Open-circuit voltage may be present
before electrode touches workpiece.
1
1 − 2
Seconds
“Touch”
Do NOT Strike Like A Match!
2
SECTION 6 − MAINTENANCE AND TROUBLESHOOTING
6-1. Routine Maintenance
Y Disconnect power before maintaining.
.
Maintain more often during severe conditions.
3 Months
Replace
unreadable
labels.
Replace Damaged
Gas Hoses
Repair Or Replace
Cracked Cables
And Cords
6 Months
Blow out inside. Direct airflow through front and back louvers.
Y Do not remove case when blowing out inside of unit .