Hypertherm XPR300 Replacement Part Procedures

Plasma Power Supply
1
XPR300 Field Service Bulletin 809970 33
Install the chopper
1. Align the coolant pipes on the new chopper at the top of the holes in the center panel and move
the chopper down into the sheet metal tabs .
2. Use a 10 mm, hexagonal-socket wrench to install the 2 nuts .
3. Connect the following wires and connectors:
* Do not put the positive lead between the phase wires.
4. Install the plastic retaining nuts and push-to-connect fittings on the rear of the chopper. See
How to use push-to-connect fittings on page 12.
5. If you spilled any coolant inside the plasma power supply, clean inside the plasma power supply.
6. Remove the tape and protective material from the rear panel of the heat-exchanger assembly.
7. Install the side panels.
8. Install the coolant. See the Coolant Installation section in the XPR300 Instruction Manual
(809480).
8
7
J2
J3
J7
J8
J4
J5
6
5
4
3
2
1
3
2A/4A
2B/4B
2C/4C
1A/3A
1B/3B
1C/3C
7
7
8 8
3-phase wires. Use a T20 driver to tighten to
4N∙m (35in∙lb).
Positive lead.* Use a 7/16 inch wrench with a
T20 driver to tighten to 4 N∙m (35 in∙lb).
1
2
Inductor leads Use a 16 mm wrench to tighten
to 48 N∙m (425 in∙lb).
Chopper ID key
CAN leads
Power lead
3
4
5
6

Hypertherm XPR300 Specifications

General

Cutting Current	300 A
Duty Cycle	100% at 300 A
Technology	X-Definition Plasma
Gas Supply	Oxygen, Nitrogen, Air
Cutting Capacity (Mild Steel)	38 mm (1.5 in)
Severance Capacity (Mild Steel)	75 mm (3 in)
Pierce Capacity (Mild Steel)	50 mm (2 in)
Input Voltage	200–480 V, 3-PH, 50/60 Hz