Nortel Passport 7400, Установка оборудования, техническое обслуживание и устранение неисправностей, Страница: 309 / 438

Chapter 37 Hardware procedures 309
Passport 7400 Hardware Installation, Maintenance, and Upgrade 5.2S1
Placing and anchoring a Passport cabinet
Place and anchor a Passport cabinet to ensure stability for your switch.
Procedure steps
1 If you haven’t done so during site preparation, drill holes to accommodate
the anchors. Use a roto hammer drill and a masonry drill bit to drill the
holes. Wear safety goggles when you drill the holes.
To properly stabilize a cabinet, you must anchor at least two diagonal
corners of the cabinet. For increased safety, anchor all four corners.
2 Clean each anchor hole thoroughly using a vacuum cleaner. If you are not
securing the cabinet immediately, cover the holes with tape to prevent
them from being filled with debris.
3 For each anchor, tap the anchor into the drilled anchor hole until it is flush
with the floor. Insert the threaded rod into the anchor and put the nut on
the bolt. Use a socket wrench to fully insert the threaded rod into the
anchor. Turn the rod until you are sure the anchor is secure in the hole.
4 Remove the nut and threaded rod from the anchor.
5 Remove the cooling unit from the bottom of the switch. See the procedure
“Removing a 16-slot Passport switch cooling unit” (page 350).
6 Remove the large grille in the base of the cabinet (4 nuts) using a wrench.
7 Carefully slide the cabinet into position.
8 Use a spirit level, or a plumb bob attached to the top of the frame, to
ensure the cabinet is vertically aligned. Ensure the cabinet is vertically
aligned side-to-side and front-to-rear within 0.25 cm (0.1 inch) of the
overall height.
If necessary, tilt the cabinet and adjust the levelling feet at the base of the
cabinet. Turn a levelling foot clockwise to lower the cabinet and
counterclockwise to raise the cabinet.
9 Assemble the bolt-down bracket using the upper and lower bolt-down
brackets as shown in “Passport cabinet anchoring (concrete and raised
floors)” (page 311). The upper bolt-down bracket is shipped with the
cabinet. The lower bolt-down bracket is part of the anchoring kit.
Place the 1/4-inch hex-head screw through the holes in the upper and
lower bolt-down brackets. Make sure that the head of the screw is on the
side of the upper bolt-down bracket. Place the 3/4-inch brass washer and
1/4-inch nut with the nylon insert on the screw. Do not tighten the screw
completely.