Installation
P/N 06-237041-001 2-25 February 2011
2-7.3 Installing Add-On Power Supply/PMU Assembly With Bracket
To install an Add-On Power Supply/PMU Assembly into any tier of an enclosure:
1. Make sure the control unit location is dry and that the enclosure is free of construction dust and
metal shavings prior to installing the power supply.
2. Remove the Power Supply/PMU Assembly from its packaging.
3. Locate two #8 Phillips-head mounting screws in the hardware kit.
4. Ensure that the AC-input-voltage selector switch on the power supply unit(s) is set to the proper
position for either 115 Vac or 230 Vac. Refer to Figure 2-4 in Section 2-4.3 for location of the
selector switch.
5. Orient the Power Supply/PMU Assembly with the power supply unit(s) to the left, as shown below
in Figure 2-20.
6. Locate the retention tabs in the enclosure’s back panel.
7. Grasping the assembly with both hands, slide the assembly onto the two outermost retention tabs.
8. Gently hold the assembly in place and insert one of the top mounting screws; hand-tighten.
9. Repeat for the remaining screw and tighten both screws securely.
10. On the PMU Board, locate the right topmost screw (beside the AC power input connector).
Remove the screw, attach the 5-in. ground wire assembly and tighten. Connect the other end of
the ground wire assembly to the Earth Ground stud located at the right of the enclosure.
11. Remove ground strap.
12. Connect the COM harness from connector J12 on the Add-On Power Supply/PMU Assembly to
J13 of the installed PMU Board.
Figure 2-20. Installing the Add-On Power Supply/PMU Assembly with Bracket
CAUTION
Use a ground strap to prevent static discharge that could damage sensitive components
on the PCB.
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