Welding Power Source Duty Cycle And Overheating - Hobart IronMan 240 Owner's Manual

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A complete Parts List is available at www.HobartWelders.com

4-6. Welding Power Source Duty Cycle And Overheating

Duty Cycle is percentage of 10
minutes that unit can weld at rated
load without overheating.
If unit overheats, Thermistor (RT1)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
voltage, or duty cycle before
welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
60% Duty Cycle At 200 Amperes
40% Duty Cycle At 250 Amperes
6 Minutes Welding 4 Minutes Resting
4 Minutes Welding 6 Minutes Resting
Overheating
A or V
0
15
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 150 215-A
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