RETROFITTING THE MODULAR POWER SYSTEM
NETWORK 90 POWER SYSTEM REMOVAL
D - 4 I-E96-506B1
®
Fan Assembly Removal
1. Disconnect and remove AC wiring from TB1.
2. Disconnect and remove fan status wiring from TB2.
3. Remove the 4 screws securing the fan assembly to the
mounting rails.
4. Pull the fan assembly out.
NOTE:
You will be able to use the +24 VDC wiring and the I/O com-
mon cable from the Network 90 installation. Remove the other wiring
by cutting the tie wraps that secure it to the sides of the cabinet.
Installing the INFI 90 Power System
Install the INFI 90 power system hardware from the bottom up
as explained in Steps 1 through 11.
NOTE:
Before mounting the hardware, determine where the speed
nuts will go. Use a pair of pliers to crimp them onto the mounting
rails. All hardware requires 4 screws (2 screws in front, 2 screws in
back).
1. Install the row 4 spacer (if required) directly above the first
MMU in your cabinet.
2. Install the power mounting unit (PMU) above the spacer
installed in Step 1.
3. If a terminal block is present at the top of the cabinet, do
the appropriate wiring.
4. Shape the heavy 0 AWG (MCOM and +5 V) strap cables
(part number 6632285_45) in a
[
fashion.
5. Attach one end of each cable to its respective cabinet bus
bar first so as not to stress the PMU bus (see Figures D-1 and
D-2).
6. Attach the other ends to the MCOM and +5 VDC bus bars
of the power mounting unit.
7. Slide heat shrink tubing over PMU connection (see
Figure 3-8).
8. Insure that connections are properly covered, then use a
heat gun to shrink the tubing into place.
9. Install the fan assembly directly above the PMU.
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