Specifications

Replacement is the opposite of removal.
Fan Assembly
Replacement:
The fan assembly (ND49520) is mounted on the PDU, and can be replaced
separately after the PDU is removed from the instrument.
Tools Required: Phillips screwdrivers (straight and right angle offset)
1. Using a straight Phillips screwdriver, remove the 12 screws (4 on
each side, 4 along the back) that secure the PDU cover. Remove the
PDU cover.
2. Unplug the fan assembly power cord from the PDU connector P2
and remove the tie wraps that secure the fan power cord.
3. Using a right angle offset Phillips screwdriver, remove the four
screws that secure the fan assembly to the PDU.
4. Using a straight Phillips screwdriver, remove the four screws and
nuts that secure the safety guard to the old fan assembly.
5. Install the safety guard on the new fan assembly using the same
screws and nuts removed in the previous step.
6. Plug the new fan assembly power cord into the PDU connector P2
and secure the cord as before.
7. Replace the PDU cover and screws.
8. Install the fan assembly onto the PDU using the screws removed
above.
7-10 MS462XX MM
POWER DISTRIBUTION UNIT REMOVAL AND REPLACEMENT
Figure 7-6. PDU Removal
CAUTION
The PDU fan
replacement assembly
(ND49520) does not
include the safety
guard. The safety guard
must be removed from
the old fan assembly
and installed on the new
fan assembly. Failure to
do so may result in a
hazardous condition.