.
A complete Parts List is available at www.MillerWelds.com
OM-257220 Page 16
4-7.
Duty Cycle and Overheating
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.
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − SA-181 560 / 250 541-A
Continuous Welding
100% Duty Cycle At 450 Amperes
60% Duty Cycle At 580 Amperes
6 Minutes Welding
4 Minutes Resting
