Owner`s manual

OM-1324 Page 10
3-2. 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 or gun and void
warranty.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 203 771 / 203 796
A. 115 VAC
Model
B. 230 VAC
Model
3 Minutes Welding 7 Minutes Resting
20% duty cycle at 90 amps
30% duty cycle at 130 amps, 60 Hz
20% duty cycle at 130 amps, 50 Hz
2 Minutes Welding 8 Minutes Resting
0
20
40
60
80
100
120
140
10 20 30 40 50 60 70 80 90 100
RatedOutput
Output Amperes
Duty Cycle %
0
20
40
60
80
100
120
140
160
180
200
10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Output Amperes
Duty Cycle %