Cisco ONS 15454 DWDM Installation And Operation Manual page 71

Chapter 1 Install the Shelf and Common Control Cards
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
Warning
precautions to ensure that the system remains stable. The following guidelines are provided to
ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in
the rack.
To prevent the equipment from overheating, do not operate it in an area that exceeds the maximum
Warning
recommended ambient temperature of 131°F (55°C). To prevent airflow restriction, allow at least
1 inch (25.4 mm) of clearance around the ventilation openings.
Warning The ONS 15454 should be installed in the lower rack position or mounted above another ONS 15454
shelf assembly.
The ONS 15454 must have 1 inch (25.4 mm) of airspace below the installed shelf assembly to allow air
Warning
flow to the fan intake. The air ramp (the angled piece of sheet metal on top of the shelf assembly)
provides this spacing and should not be modified in any way.
The 10-Gbps-compatible shelf assembly (15454-SA-10G) and fan-tray assembly (15454-FTA3) are
Note
required with the ONS 15454 XC10G, OC-192, and OC-48 any slot (AS) cards.
The shelf, the air ramp, and the E1-75/120 conversion panel ship with the ETSI mounting brackets
Note
installed as needed for installation in an ETSI rack. If you want to install the node in a 19-inch
(482.6-mm) rack, the ETSI mounting brackets of the shelf and the air ramp need to be replaced with the
19-inch (482.6-mm) mounting brackets that shipped in the ship kit.
(ANSI shelves only.) Complete the
Step 1
Rack (ANSI Only)" task on page 1-10
(482.6 mm) rack.
(ANSI shelves only.) To install the air filter on the bottom of the shelf rather than below the fan-tray
Step 2
assembly, complete the
page
Complete the necessary rack mount task as applicable:
Step 3
DLP-G5 Mount the Shelf Assembly in a Rack (One Person), page 1-13
•
September 2004
"DLP-G4 Install the External Brackets and Air Filter (ANSI Only)" task on
1-11.
"DLP-G3 Reverse the Mounting Bracket to Fit a 19-inch (482.6-mm)
if you need to convert from a 23-inch (584.2 mm) to a 19-inch
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
DLP- G2 Inspect the Shelf Assembly
1-9