Installing A Front T640 Air Filter; Removing A Rear T640 Air Filter; Figure 137: Installing The Front Air Filter - Juniper T640 Hardware Manual

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Installing a Front T640 Air Filter

To install 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.
Insert the filter element into the air filter frame.
2.
Grasp the air filter by the handles on its faceplate, and slide it straight into the chassis.
3.
Tighten the captive screws on the corners of the faceplate.
4.
Unlock the cable management system, and lower it to the fully lowered position.
5.
Rearrange the PIC cables in the cable management system.
6.

Figure 137: Installing the Front Air Filter

Removing a Rear T640 Air Filter

The rear air filter is located at the left rear edge of the chassis. The rear air filter weighs
less than 1 lb (0.5 kg).
To remove the rear air filter:
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.
Loosen the captive screws at the top, center, and bottom of the air filter, using a
2.
Phillips (+) screwdriver, number 2.
Grasp the air filter cover by the captive screws, and pull firmly to remove the cover
3.
and honeycomb assembly from the chassis (see
Press the filter element inward until it clears the hooks at the top and bottom of the
4.
air filter slot, then push it to the left to unseat it.
Move the tabs on the filter element to a horizontal position.
5.
Grasp the tabs on the filter element and carefully pull it straight out from the chassis
6.
(see Figure 139 on page
Chapter 17: Replacing T640 Router Hardware Components
Figure 137 on page 251):
Figure 138 on page
253).
252).
251