Duty Cycle And Overheating - Miller Auto-Continuum 350 Owner's Manual

4-7. Duty Cycle And Overheating

100% Duty Cycle At 350 Amperes
Continuous Welding
Overheating
100% Duty Cycle At 500 Amperes
Continuous Welding
OM-273473 Page 14
350 Model
60% Duty Cycle At 400 Amperes
6 Minutes Welding
0
15
Minutes
500 Model
50% Duty Cycle At 600 Amperes
5 Minutes Welding
0
15
Minutes
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
4 Minutes Resting
A/V
OR
Reduce Duty Cycle
5 Minutes Resting
A/V
OR
Reduce Duty Cycle
duty1 4/95 − SA-268 499-A / 268 498-A