Miller OM-246 466B, Owner'S Manual

Page: 16 / 76

OM-246 466 Page 12
3-3. Duty Cycle And Overheating
Duty Cycle is percentage of 10
minutes 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.
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 178 651
Continuous Welding
100% Duty Cycle At 225 Amperes 60% Duty Cycle At 300 Amperes
6 Minutes Welding 4 Minutes Resting