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Table 10: Fan Tray Specifications (continued)
Specification
Fan numbering
Volume flow at 100%
Introduced in Junos OS Release
Height
Width
Depth
Weight
The array of fans in both models operate as a single unit. If an individual fan in the array fails, the entire
fan tray must be replaced. However, the fan tray continues to operate indefinitely and provides sufficient
cooling even when a single rotor fails in a fan, provided the room temperature is within the operating
range.
If you want to replace an existing fan tray while the router is running, remove only one fan tray. The router
continues to operate for a limited time with a single operating fan tray without triggering a thermal alarm.
CAUTION:
is operating.
The internal fan control board in each fan tray contains the LEDs for the associated fan tray controllers
and the LEDs for the three SIBs directly behind the fan tray.
Fan Tray Controller
The PTX10004 supports two fan tray controllers to provide the control logic and power to hot-insert and
hot-remove a fan tray:
To avoid a thermal alarm, do not remove both fan trays while the router
JNP10004-FAN2
0 through 11
948 CFM for both fan trays
20.3R1-EVO
12.08 in. (30.68 cm)
6.6 in. (16.8 cm)
5.5 in. (13.97 cm) without handles, 6.85 in. (17.4 cm) with
handles
9.8 lb (4.45 kg)
42
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