Tweco FP-165 Mini MIG Portable MIG Welder - Manual (Page 20)

INTRODUCTION FIREpOwER Fp-125,135,165
Introduction 2-5 Manual 0-5123
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.
FirePower 125 at Rated Duty Cycle
0 1 2 3 4 5 6 7 8
Minutes
9 10
Art # A-09058
Figure 2-5: Duty Cycle of FirePower125
FirePower 135 at Rated Duty Cycle
0 1 2 3 4 5 6 7 8
Minutes
9 10
Art # A-09059
Figure 2-6: Duty Cycle of FirePower135
FirePower 165 at Rated Duty Cycle
0 1 2 3 4 5 6 7 8
Minutes
9 10
Art # A-09060
Figure 2-7: Duty Cycle of FirePower165