operation
4-6
powermax
45
Operator Manual
Check the indicator leds
Verify that the green power ON LED on the front of the power supply is illuminated, that the gas pressure LED shows a
green bar in the center of the gauge, and that none of the other LEDs are illuminated or blinking. If the temperature,
torch cap sensor, or fault LEDs are illuminated or blinking, or if the power ON LED blinks, correct the fault condition
in the
section for more information.
Attach the work clamp
The work clamp must be attached to the workpiece while you are cutting.
Note: If you are using the Powermax45 with a cutting table, you can ground it through the table instead of using
the work clamp. See your table manufacturer’s instructions for more information.
• Ensure that the work clamp and the workpiece make good metal-to-metal contact.
• For the best cut quality, attach the work clamp as close as possible to the area being cut.
•
do not attach the work clamp to the portion of the workpiece to be cut away.
When the power ON LED is illuminated, none of the other LEDs are illuminated or blinking, the gas pressure LED
indicates pressure is in the correct range, the amperage knob is set, and the work clamp is attached, the system is ready
for use.
Understand duty-cycle limitations
The duty cycle is the amount of time, in minutes, that a plasma arc can remain on within a 10-minute period when
operating at an ambient temperature of 40° C (104° F). With a Powermax45:
• At 45 A, the arc can remain on for 5 minutes out of 10 minutes without causing the unit to overheat (50% duty
cycle).
• At 41 A, the arc can remain on for 6 minutes out of 10 (60%).
• At 32 A, the arc can remain on for 10 minutes out of 10 (100%).
If the power supply overheats because the duty cycle is exceeded, the temperature LED will illuminate, the arc will shut
off, and the cooling fan will continue to run. To resume cutting, wait for the temperature LED to extinguish.
The next section explains how to operate the hand torch. To use the machine torch, see
Work clamp
Summary of Contents for POWERMAX 45
Page 1: ...45 Plasma arc cutting system Operator Manual 805780 Revision 2 ...
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Page 10: ...Table of Contents iv powermax45 Operator Manual ...
Page 30: ...Power supply setup 2 8 powermax45 Operator Manual ...
Page 74: ...operation 4 16 powermax45 Operator Manual ...
Page 84: ...Maintenance and Repair 5 10 powermax45 Operator Manual ...
