Hypertherm Powermax 30 - Page 74

MAINTENANCE
powermax30 Service Manual 3-35
11. Detach the bottom 2 wires (both are white) from the ON/OFF switch.
12. Lay the unit on its side (power board down) and use a 5/16-inch (8 mm) nut driver to remove the nuts that
secure the red and the white wires that are routed underneath the board to the studs on the fan side of the
unit. The studs are labeled “RED” and “WHT.”
Ribbon cable
Torch start and
cap sensor
(J12)
J4, J5, and J6
J18
J19J20J21
J13
J14
J15
Work lead
connector (J22)
Retaining screw
Retaining screw
Retaining
screw
Heat sink
assembly screw
Heat sink
assembly screw
Heat sink
assembly
screw
Heat sink
assembly
screw
IGBT attachment
screws
White
Red