Hypertherm XPR300 Replacement Part Procedures

Torch Connect Console
3
XPR300 Field Service Bulletin 809970 93
Replace the ohmic relay and bracket

See Torch connect console Easy Connect side on page 140 for location
and part number.
Remove the ohmic relay and bracket
1. Complete the following procedures:
a. Remove the power from the cutting system.
b. Drain the coolant. See Remove old coolant from the coolant system in the Maintenance
section in the XPR300 Instruction Manual (809480).
c. Remove the top panel.
d. Remove the torch-side panel.

See Torch connect console top panel and side panels on page 114.

Keep all nuts and screws that you remove.
2. Remove the pilot arc lead, coolant hoses, and water hose from the torch connector.
3. Unscrew the
connector and pull
the electrical wire to
disconnect it.
4. Disconnect the wires
from J3 and J4 on the
ohmic PCB.
5. Remove the wires
from J2 on the ohmic
PCB and pull the
connector through
the grommet .
6. Use an 8 mm,
hexagonal-socket
wrench to remove the
2 nuts.
7. Remove the ohmic
relay and bracket.
1
2
1
2

Hypertherm XPR300 Specifications

General

Brand	Hypertherm
Model	XPR300
Category	Welding System
Language	English