Cisco NCS 560-4 Hardware Installation Manual page 89

Installing the Cisco NCS 560-4 Router
Note If a fan tray is removed and not replaced within the stipulated time the system will automatically power-off.
There should be a minimum time period of 15 seconds between fan tray removal and re-insertion of the fan
trays during the operation of the system. See the
Note
Ensure that you keep your fingers, clothing, and jewelry away from the fans when installing or removing the
fan tray module. Exposed circuitry is an energy hazard.
Caution To avoid erroneous failure messages, allow at least two minutes for the system to reinitialize after the fan tray
has been replaced.
Before you begin
To remove the master fan tray when the cables from the power supplies cross over and across the fan tray,
gently lower the cables to clear enough space and remove the fan tray from the chassis as mentioned in steps
1–4.
To remove the slave fan tray when the cables from the interface module and the RSP cross over and across
the fan trays, gently lift the cables to clear enough space and remove the fan trays from the chassis as mentioned
in steps 5–8.
Table 13: Online Insertion and Removal - Parameters
OIR Module
Fan Tray
10
It is not recommended to perform OIR of any module above 40°C ambient
11
Fan Tray OIR should be performed only when a fan's failed condition is encountered and other fans are
spinning at max speed.
Procedure
Step 1
Slip on the ESD-preventive wrist strap that was included in the accessory kit.
Step 2 Using a No. 2 Phillips screwdriver, loosen the captive installation screw that secures the master fan tray to
the router.
Step 3 Grasp the fan tray handle of the master fan tray (N560-4-FAN) with one hand and the outside of the chassis
with the other hand.
Caution
Step 4
Pull the fan tray toward you no more than 1 inch to disengage it from the power receptacle on the midplane.
10
Ambient
11
30°C
40°C
The fans are exposed on the right side of the fan tray. Keep your fingers, clothing, and jewelry away
from the fans. Always handle the fan tray by the handle.
Online Insertion and Removal (OIR)
Fan Speed OIR Time
100% PWM 5 mins
100% PWM 3 mins
Cisco NCS 560-4 Router Hardware Installation Guide
Removing and Replacing the Fan Trays
section.
Comments
Single Fan Fail,
Other Fans running
at 100% PWM
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