Miller Multimatic 255 - 4-9. Duty Cycle And Overheating For MIG

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4-9. Duty Cycle And Overheating For MIG
Duty Cycle is percentage of 10 minutes that
unit can weld at rated load without
overheating.
If unit overheats, output stops. Wait fifteen
minutes for unit to cool. Reduce amperage or
duty cycle before starting to weld again.
NOTICE – Exceeding duty cycle can damage
unit and void warranty.
60% Duty Cycle At 230A
6 Minutes Welding 4 Minutes Resting
40% Duty Cycle At 260A
4 Minutes Welding 6 Minutes Resting
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes