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INTRODUCTION
2.07 Duty Cycle
Duty Cycle is the amount of arc-on time (actual welding time) during any 10 minute period that a machine can operate
at it's rated output without damaging internal components. For example, the FirePower FP-135 is designed for 20%
duty cycle at 117 amps. This means that it has been designed and built to provide the rated amperage, 117 amps, for
2 minutes out of every 10 minute period. During the other 8 minutes of the 10 minute period, the FirePower FP-135
must idle and be allowed to cool. The thermal cutout will operate if the duty cycle is exceeded.
The FirePower FP-125 is designed for 19% duty cycle at 90 Amps.
The FirePower FP-135 is designed for 20% duty cycle at 117 Amps.
The FirePower FP-165 is designed for 18% duty cycle at 140 Amps.
If the unit overheats and the thermostat opens, wait 15 minutes for unit to cool.
Introduction
FirePower 125 at Rated Duty Cycle
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Figure 2-5: Duty Cycle of FirePower125
FirePower 135 at Rated Duty Cycle
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Figure 2-6: Duty Cycle of FirePower135
FirePower 165 at Rated Duty Cycle
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Figure 2-7: Duty Cycle of FirePower165
FIREpOwER Fp-125,135,165
Art # A-09058
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Minutes
Art # A-09059
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Art # A-09060
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Manual 0-5123
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