Juniper Networks M160 manual Maintaining the Air Filter, Removing the Air Filter

M160 Internet Router Hardware Guide

Maintaining the Air Filter on page 128

Maintaining the Fan Tray and Impellers on page 130

Maintaining the Air Filter

Check the air filter regularly for dust and debris. Clean or replace it as needed. The air filter is hot-removable and hot-insertable, as described in Field-ReplaceableUnits (FRUs) on page 4. Take note of the following caution, however.

CAUTION: Do not operate the router for more than a few minutes when the air filter has been removed. The fans and impellers are powerful enough to draw in foreign material, such as bits of wire, through the unfiltered air intake, which could damage router components.

To maintain the air filter, perform the following procedures:

Removing the Air Filter on page 128

Cleaning the Air Filter on page 129

Installing the Air Filter on page 129

Removing the Air Filter

The air filter is located at the front of the chassis, below the FPC card cage and cable management system (see Figure 61).

To remove the air filter, follow this procedure:

1.Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226.

2.Loosen the thumbscrew at each corner of the air filter cover.

3.Grasp the edges of the air filter and pull it away from the front of the chassis.

4.Inspect the filter for dust, dirt, and holes. If needed, clean it as described in “Cleaning the Air Filter” on page 129 or replace it.

128 Maintaining Cooling System Components