Replacing Cooling System Components; Replacing A T4000 Front Air Filter; Removing The T4000 Front Air Filter - Juniper T4000 Hardware Manual

CHAPTER 28

Replacing Cooling System Components

Replacing a T4000 Front Air Filter

Removing the T4000 Front Air Filter

Copyright © 2018, Juniper Networks, Inc.
Replacing a T4000 Front Air Filter on page 259
Replacing a T4000 Rear Air Filter on page 261
Replacing a T4000 Lower Front Fan Tray on page 265
Replacing a T4000 Upper Front Fan Tray on page 267
Replacing a T4000 Rear Fan Tray on page 269
Removing the T4000 Front Air Filter on page 259
1.
2. Installing the T4000 Front Air Filter on page 260
The front air filter, located below the FPC card cage in the front of the chassis, installs
horizontally. The front air filter weighs approximately 1 lb (0.5 kg). The air filters are
hot-insertable and hot-removable.
To remove the front air filter (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Unwrap any PIC cables from the spools on the cable management system, and remove
2.
the cables from the tray. Arrange the cables so that they do not block the front of the
cable management system and tray, and secure them with temporary fasteners so
that they are not supporting their own weight as they hang from the connector.
CAUTION: Do not let fiber-optic cable hang free from the connector. Do
not allow fastened loops of cable to dangle, which stresses the cable at
the fastening point.
Simultaneously pull the two releases on the cable management system. Lift it up and
3.
outward to lock it in place to access the air filter.
Figure 96 on page 260):
259