Replacing An M120 Air Filter; Removing The M120 Air Filter - Juniper Networks Hardware Manual

M120 Multiservice Edge Router Hardware Guide
Related
Documentation

Replacing an M120 Air Filter

138
All manuals and user guides at all-guides.com
M120 Cooling System Description on page 32
Maintaining the M120 Fan Trays on page 102
Troubleshooting the M120 Cooling System on page 120
The router has one air filter that installs horizontally below the front lower fan tray within
the air intake plenum. The air filter is hot-insertable and hot-removable.
To replace an air filter, perform the following procedures:
Removing the M120 Air Filter on page 138
Installing the M120 Air Filter on page 139

Removing the M120 Air Filter

The air filter is located in the front of the chassis below the FPC card cage. The air filter
weighs approximately 1 lb (0.5 kg).
To remove the air filter (see Figure 67 on page 139):
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 labeled
3.
Lift it up and outward to lock it in place to access the air filter.
Loosen the captive screws on either side of the air filter faceplate and remove the
4.
faceplate.
Press back and down on the filter to release it from the hooks, then slide it straight
5.
out of the chassis.
PULL on the cable management system.
Copyright © 2010, Juniper Networks, Inc.