Hypertherm XPR170 - Install the Siemens Main Contactor

Plasma Power Supply
1
56 810410 Field Service Bulletin XPR170
Install the Siemens
®
main contactor
Figure 1
1. Make sure that the switch on the new main contactor is set to PLC mode (ON).
2. Use a 10 mm, hexagonal-socket wrench to install the nut on the upper left corner and the screw
on the lower right corner of the new main contactor. Tighten the nut and screw to 9 N∙m
(80 in∙lbf).
3. Connect J6.
4. Install A1 and A2. Tighten the screws to 1 N∙m (10 in∙lbf).
5. Use 2 wrenches to install the L1, L2, and L3 wires on the left and right side of the main
contactor. Tighten to 13 N∙m (115 in∙lbf).
6. Make sure that the wires with the L1, L2, and L3 labels on the right side of the main contactor
align with the wires with the L1, L2, and L3 labels on the left side of the main contactor.
7. Install the rear panel.