Hypertherm Powermax30 XP Service Manual - Manual (Page 46)

46 Powermax30 XP Service Manual 808150 Revision 1
4 – Operation
Check the indicator LEDs
Verify that the green power ON LED on the front of the power supply is illuminated and that none of the other LEDs are
illuminated or blinking.
If the temperature, torch cap sensor, or gas pressure LEDs illuminate or blink, or if the power ON LED blinks, correct the
fault condition before continuing. See
Troubleshooting guide on page 63 section for more information.
Verify the system is ready
When the power ON LED illuminates, none of the other LEDs illuminate or blink, and the amperage knob is set, the
system is ready for use.
Understand duty-cycle limitations
The duty cycle is the percentage of time out of 10 minutes that a plasma arc can remain on when operating at an ambient
temperature of 40° C (104° F).
With input power of 120 V:
 At 30 A, the arc can remain on for 2.0 minutes out of 10 minutes without causing the unit to overheat (20% duty
cycle).
 At 17 A, the arc can remain on for 6 minutes out of 10 (60%).
 At 15 A, the arc can remain on for 10 minutes out of 10 (100%).
With input power of 240 V:
 At 30 A, the arc can remain on for 3.5 minutes out of 10 (35% duty cycle).
 At 23 A, the arc can remain on for 6 minutes out of 10 (60%).
 At 18 A, the arc can remain on for 10 minutes out of 10 (100%).
When the duty cycle is exceeded, the system overheats, the temperature LED illuminates, the arc shuts off, and the
cooling fan continues to run. To resume cutting, wait for the temperature LED to extinguish.
 The fan may run during normal operation of the system.