Miller INFINITY 35, Owner'S Manual

Page: 12 / 28

OM-206 360 Page 8
2-4. 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.
Y Exceeding duty cycle can
damage unit and void
warranty.
100% Duty Cycle
Overheating
0
15
A/V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / Ref. SA-168 918
Continuous Welding
20 25 30 40 50 60 70 80 90100 35
400
350
300
250
200
150
100
WELDING
AMPERES
% DUTY CYCLE
20 25 30 40 50 60 70 80 90100 35
800
700
600
500
400
300
200
WELDING
AMPERES
% DUTY CYCLE
Rated Output Rated Output
INFINITY 45
INFINITY 35
2-5. Volt-Ampere Curves
INFINITY 45
INFINITY 35