Lift-Arc Switch; Power Switch And Pilot Light - Miller Electric Maxstar 152 Owner's Manual

NOTE

4-5. Lift-Arc Switch

1

4-6. Power Switch And Pilot Light

1
Lift-Arc switch must be in Off position when using a High-Frequency unit with this
welding power source, or when using the SMAW welding process.
"Touch"
Do NOT Strike Like A Match!
2 3
1 – 2
Seconds
2
1 Lift-Arc Switch
Use switch to select Lift-Arc On or
Off.
With Lift-Arc On, start an arc in
GTAW welding as follows:
2 GTAW Electrode
3 Workpiece
Touch tungsten electrode to work-
piece at weld start point, hold elec-
trode to workpiece for 1-2 sec-
onds, and slowly lift electrode. An
arc will form when electrode is lifted.
Normal open-circuit voltage is not
present before tungsten electrode
touches workpiece; only a low
sensing voltage is present between
electrode and workpiece. The solid-
state output contactor does not en-
ergize until after tungsten electrode
is touching workpiece. This allows
electrode to touch workpiece with-
out overheating, sticking, or getting
contaminated.
Ref. S-156 279
1 Power Switch
Use switch to turn unit and pilot light
On and Off.
2 Pilot Light
OM-206 Page 17