Hypertherm Powermax30 Service Manual - Manual (Page 68)

MAINTENANCE
powermax30
Service Manual 3-29
6. Remove the screw that holds the green/yellow ground wire to the heatsink. A notch in the power board provides
access to the screw.
7. On the outside of the power supply, loosen the strain relief retention nut so that the wires move freely. If you
are replacing the strain relief, use an adjustable wrench to unscrew the nut on the inside of the power supply
as well.
8. Remove the plug from the old power cord.
9. From the inside of the power supply, pull the wires through the strain relief and the hole in the endcap to
remove the old power cord.
10. Route the plug wires of the new power cord through the nut for the strain relief and then through the hole in the
endcap. Do not remove the tubular ferrite bead from the power switch end of brown and blue wires.
11. If you have a new strain relief, slide it onto the new power cord. On the inside of the endcap, screw the nut onto
the strain relief.
12. Press the connector for the brown wire onto the pin on the upper left side of the power switch.
13. Press the connector for the blue wire onto the pin on the upper right side of the power switch.
14. Tighten the green and yellow ground wire to the heatsink with a torque setting of 17.28 kg cm
(15 inch-pounds).
15. Position the wires in the wire chase up the side of the endcap and out of the way of the power board.
16. Replace or reposition the endcap. Make sure that the screw hole in the ground clip aligns with the screw holes
in the endcap and the power supply.
17. Tighten the strain relief retention nut on the outside of the endcap.
18. Being careful not to pinch any of the wires, replace the Nomex barrier and slide the cover back onto the power
supply. Make sure that the bottom edges are in the tracks. Position the handle over the holes in the top of the
cover, then use the 2 screws to secure the cover.
19. Reconnect the electrical power and the gas supply.