Installing A Fan Tray In An Ex4200 Switch - Juniper EX4200 Hardware Manual

Figure 55: Removing a Fan Tray from an EX4200 Switch
NOTE: When a fan tray is removed, Fan/Blower is Absent is logged in the system log and the
system raises a minor alarm.

Installing a Fan Tray in an EX4200 Switch

The fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU) installed in the rear panel
of the switch: You can remove and replace it without powering off the switch or disrupting switch functions.
All the EX4200 switch models, except the EX4200-24F-S and EX4200-48T-S switches are shipped with
one fan tray pre-installed in the rear panel of the switches. EX4200-24F-S and EX4200-48T-S switches
are not shipped with pre-installed fan tray; you must order them separately.
Ensure that you have the following parts and tools available:
A Phillips (+) screwdriver, number 2
To install a fan tray in an EX4200 switch chassis (see
CAUTION:
downwards.
1. Remove the fan tray from its bag. Using both hands, align the tray with the fan tray guides on the fan
tray slot on the rear panel of the chassis and slide it in until it is fully seated.
2. Tighten the screw or screws on the fan tray by using the screwdriver.
If you are installing a fan tray in an EX4200 switch, ensure the fans face
Figure 56 on page 195):
194