Nortel Passport 15000, Hardware Installation And Maintenance, Page: 495 / 874

Chapter 17 Hardware procedures 495
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Installing a Shasta 5000 air-flow grill
Install a Shasta 5000 air-flow grill to maintain the ability to cool the switch
hardware when it is installed in a NEBS 2000 frame.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• You will need an air-flow grill with part number P0914658, from the
hardware kit with PEC NTHW85.
Procedure steps
1 If the upper half of the NEBS 2000 frame has front or rear shelf filler
panels, remove them. Store the panels and 10-mm (3/9-in.) screws for an
alternate use of your choosing.
2 Unpack the air-flow grill with part number P0914658 from the hardware kit
NTHW85.
3 For orientation, refer to the figure “Location of the grill for a Shasta 5000
in a NEBS 2000 frame” (page 496). Hold the grill in the air so that
• the mounting-ear screw holes are left and right
• the open edge of the grill is at the bottom facing you
4 Place the top flange of the grill between the NEBS 2000 frame uprights
until the mounting ears are flush against silvery grounding strip. The front
surface of the frame uprights is covered with a silvery strip of metal tape
for grounding. Dimples in the strip indicate where screw holes are located.
To see the dimples clearly, run your finger firmly along the upright.
5 Align and center the 4 holes of the mounting ears with dimples or holes
on the silvery strip.
The air-flow grill is correctly positioned when each bottom hole of the
mounting ears aligns with the second dimple in the frame upright that
occurs above the top edge of the Passport 15000 or 20000 cooling unit.
6 While holding the grill in position, fasten a thread-forming 10-mm (3/8-in.)
hex-head screw from the kit through each the mounting ear into the frame
uprights.
7 Fasten the 2 remaining screws through the other mounting ear holes.
8 Tighten the screws to snug plus a 1/4-turn.