Cisco ONS 15454 Hardware Installation Manual page 418

Fan Speed
Fan Speed
The fan speed is controlled by the TNC, TNCE, TSC, or TSCE card temperature sensors. The sensors measure
the input air temperature at the fan-tray assembly. Fan speed options are low, medium, and high. If the TNC,
TNCE, TSC, or TSCE card fails, the fans automatically shift to high speed. The temperature that the TNC,
TNCE, TSC, or TSCE sensors measure appear on the LCD screen.
Fan Failure
If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual
fans. The red Fan Fail LED on the front of the fan-tray illuminates when one or more fans fail. The red Fan
Fail LED clears after you install a working fan-tray.
NTP-G257 Install the Fan-Tray Assembly in the ONS 15454 M6
Shelf
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
Note The 15454-M2-FTA2 is compatible with R9.2.0 and later releases.
Caution Do not operate an ONS 15454 M6 without an air filter. For information on the air filter, see
and Replace the Air Filter, on page
Caution Do not force a fan-tray assembly into place. Doing so can damage either the connectors on the fan tray or the
connectors on the backpanel of the shelf, or both.
Cisco ONS 15454 Hardware Installation Guide
388
This procedure installs the 15454-M6-FTA or 15454-M6-FTA2 fan-tray assembly
in the ONS 15454 M6 system.
Small slot-head screwdriver
• NTP-G252 Install the ONS 15454 M6 Shelf , on page
• NTP-G259 Open and Remove the Standard Door of the ONS 15454 M6
Shelf , on page 327.
• Connect the chassis to the office ground. For detailed instructions on how
to ground the chassis, see the
for Cisco CPT and Cisco ONS
Required
Onsite
None
435.
Installing the ONS 15454 M6 Shelf
294.
Electrostatic Discharge and Grounding Guide
Platforms.
NTP-G114 Inspect