Harbor Freight Tools VULCAN PROTIG 200 Owner's Manual & Safety Instructions page 15

Duty Cycle (Duration of Use)
Avoid damage to the Welder by not welding for
more than the prescribed duty cycle time. The Duty
Cycle defines the number of minutes, within a 10 minute
period, during which a given welding process can
produce a particular welding current without overheating.
For example, a 360% duty cycle at 165 A welding
current must be allowed to rest for at least 7 minutes
after every 3 minutes of continuous welding.
Failure to carefully observe duty cycle limitations
can easily over-stress a welder's power generation
system contributing to premature welder failure.
TIg Rated duty cycles
240VAC
25% Use at 200 A
For 10 continuous Minutes
2-1/2 7-1/2
Minutes Minutes
Welding Resting
100% Continuous Use at 100 A
Item 63619
120VAc
35% Use at 115 A
For 10 continuous Minutes
3-1/2 6-1/2
Minutes Minutes
Welding Resting
100% Continuous Use at 63 A
For technical questions, please call 1-888-380-0318.
This welder has an internal thermal protection
system to help prevent this sort of over-stress.
When the Welder overheats, it automatically shuts
down and the Overload Indicator lights. The welder
automatically returns to service after cooling
off. Rest the Tig Torch or Electrode Holder on an
electrically non-conductive, heat-proof surface, such
as a concrete slab, well clear of the ground clamp.
Allow the Welder to cool with the power Switch on,
so that the internal Fan will help cool the welder.
When the Overload Indicator is no longer lit and the
Welder can be used again, use shorter welding periods
and longer rest periods to prevent needless wear.
Stick Rated duty cycles
240VAC
20% Use at 170 A
For 10 continuous Minutes
2 8
Minutes Minutes
Welding Resting
100% Continuous Use at 75 A
120VAc
20% Use at 80 A
For 10 continuous Minutes
2-1/2 7-1/2
Minutes Minutes
Welding Resting
100% Continuous Use at 50 A
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