Fan Tray Controllers - Juniper PTX10008 Hardware Manual

Table 8: Fan Tray Specifications (continued)
Specification
Depth
Weight
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:
operating.
CAUTION:
minutes.
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 Controllers

The two fan tray controllers provide the control logic and power to hot-insert and hot-remove a fan tray.
The fans in each fan tray are numbered 0 through 20. See
There are two fan tray controller models:
JNP10008-FAN-CTRL—Supports model JNP10008-FAN; see
Figure 21: Fan Tray Controller JNP10008-FAN-CTRL
JNP10008-FTC2—Supports model JNP10008-FAN2; see
JNP10008-FAN
4.0 in. (10.2 cm) without handles,
5.2 in. (13.2 cm) with handles
11.8 lb (5.4 kg)
To avoid a thermal alarm, do not remove both fan trays while the router is
The chassis will shut down if a thermal alarm is raised for more than three
JNP10008-FAN2
5.5 in. (13.97 cm) without handles,
6.7 in. (17.01 cm) with handles
20 lbs (9.07 kg)
Figure 21 on page 49 and
Figure 21 on page
Figure 22 on page 50.
Figure 22 on page 50.
49.
49