OM-216 869 Page 45
5-7.
Process Control
1
1
Process Control
Press switch pad until desired pro-
cess LED is illuminated:
TIG HF Impulse
- is a pulsed HF
(see Section 5-8) arc starting meth-
od that can be used with either AC
or DC TIG welding. Make connec-
tions according to Section 4-20.
TIG Lift-Arc
- is an arc starting
method in which the electrode must
come in contact with the workpiece
(see Section 5-8). This method can
be used with either AC or DC TIG
welding. Make connections ac-
cording to Section 4-20.
Stick (SMAW)
- This method can
be used with either AC or DC Stick
welding. Make connections ac-
cording to Section 4-22.
5-8. Lift-Arc
And HF TIG Start Procedures
Lift-Arc Start
When Lift-Arc
button light is On,
start arc as follows:
1
TIG Electrode
2
Workpiece
Touch tungsten electrode to work-
piece at weld start point, enable out-
put and shielding gas with torch trig-
ger, foot control, or hand control.
Hold
electrode to workpiece for 1-2 sec-
onds
, and slowly lift electrode. Arc is
formed when electrode is lifted.
Normal open-circuit voltage is not
present before tungsten electrode
touches workpiece; only a low sens-
ing voltage is present between elec-
trode and workpiece. The solid-state
output contactor does not energize
until after electrode is touching work-
piece. This allows a properly pre-
pared electrode (see Section 11-2) to
touch workpiece without overheating,
sticking, or getting contaminated.
Application:
Lift-Arc is used for the DCEN or AC
GTAW process when HF Start meth-
od is not permitted, or to replace the
scratch method.
HF Start
When HF Start button light is On, start
arc as follows:
High frequency turns on to start arc
when output is enabled. High fre-
quency turns off when arc is started,
and turns on whenever arc is broken
to help restart arc.
Application:
HF start is used for the DCEN GTAW,
or the AC GTAW process when a
non-contact arc starting method is
required.
1
1
−
2
Seconds
“Touch”
Do NOT Strike Like A Match!
2
Lift-Arc Start Method
Содержание DYNASTY 350
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Страница 26: ...OM 216 869 Page 20 Notes...
Страница 84: ...OM 216 869 Page 78 SECTION 8 ELECTRICAL DIAGRAM Figure 8 1 Circuit Diagram For Dynasty 350 Models...
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Страница 86: ...OM 216 869 Page 80 Figure 8 2 Circuit Diagram For Maxstar 350 Models...
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Страница 88: ...OM 216 869 Page 82 Figure 8 3 Circuit Diagram For Dynasty 700 Models Part 1 of 2...
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Страница 90: ...OM 216 869 Page 84 Figure 8 4 Circuit Diagram For Dynasty 700 Models Part 2 of 2...
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Страница 92: ...OM 216 869 Page 86 Figure 8 5 Circuit Diagram For Maxstar 700 Models Part 1 of 2...
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Страница 94: ...OM 216 869 Page 88 Figure 8 6 Circuit Diagram For Maxstar 700 Models Part 2 of 2...
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Страница 96: ...OM 216 869 Page 90 228 525 B Figure 8 7 Circuit Diagram For Cooler...
Страница 121: ...OM 216 869 Page 115 Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual...