Installing The Fan Tray; Removing And Replacing The Fan Tray - Cisco ASR 903 Hardware Installation Manual

Installing the Fan Tray

Installing the Fan Tray
The fan tray is a modular unit that provides cooling to the Cisco ASR 903 Router. Follow these steps to
install the fan tray in the chassis:
Step 1 Orient the fan tray so that the captive screws are on the left side of the fan tray's front panel.
shows how to orient the fan tray.
Figure 3-11
Guide the fan tray into the chassis until it is fully seated.
Step 2
Caution
Note
Step 3 Secure the fan tray to the chassis using the attached captive installation screws. The recommended
maximum torque is 5.5 in.-lb (.62 N-m).
This completes the procedure for installing or replacing the fan tray in a Cisco ASR 903 Router.
For information about connecting cables to the fan tray alarm port, see
Port" section on page
page

Removing and Replacing the Fan Tray

The fan tray supports online insertion and removal (OIR). There is no need to power down the
Cisco ASR 903 Router to remove or replace the fan tray. However, the router will shut down if the fan
tray is removed from the chassis for more than five minutes.
Cisco ASR 903 Router Hardware Installation Guide
3-8
Installing the Fan Tray
GE-0 GE-1 GE-2 GE-3 GE-4 GE-5 GE-6 GE-7
PWR
STAT
GE-0 GE-1 GE-2 GE-3 GE-4 GE-5 GE-6 GE-7
PWR
STAT
GE-0 GE-1 GE-2 GE-3 GE-4 GE-5 GE-6 GE-7
PWR
STAT
PWR
STAT
L 0 S L 1 S L 2 S L 3 S L 4 S L 5 S L 6 S L 7 S
PWR
STAT
L 0 S L 1 S L 2 S L 3 S L 4 S L 5 S L 6 S L 7 S
PWR
STAT
L 0 S L 1 S L 2 S L 3 S L 4 S L 5 S L 6 S L 7 S
The fans are exposed on the left side of the fan tray. Keep your fingers, clothing, and jewelry
away from the fans. Always handle the fan tray by the handle.
When installing the cabling to the RSPs, we recommend that you leave a service loop of extra
cabling sufficient to allow for fan tray removal.
3-42. For a summary of the LEDs on the fan tray, see
5-7. For more information about air flow guidelines, see
RUDY RSP
1PPS 1PPS 1OMHZ
IN OUT IN
MEM CONSOLE
INPUT INPUT
24V—60V 28A
OK OK
OUTPUT OUTPUT
FAIL FAIL
Air Flow Guidelines, page
Chapter 3 Installing the Cisco ASR 903 Router
SYNC
ACT
PWR
1OMHZ
OUT
TOD BITS MGMT STAT
ENET
24V—60V 28A
"Connecting the Fan Tray Alarm
"LED Summary" section on
2-11.
Figure 3-11
FAN TEMP
CRIT MAJ MIN
ALARM
OL-25178-04