Replacing The T640 Quiet Lower Front Fan Tray; Removing The T640 Quiet Lower Front Fan Tray; Figure 130: Installing The Quiet Upper Front Fan Tray - Juniper T640 Hardware Manual

Figure 130: Installing the Quiet Upper Front Fan Tray

Related
Documentation

Replacing the T640 Quiet Lower Front Fan Tray

Copyright © 2013, Juniper Networks, Inc.
T640 Cooling System Description on page 75
Maintaining the T640 Fan Trays on page 181
Troubleshooting the T640 Cooling System on page 203
T640 Preventing Electrostatic Discharge Damage on page 386
The lower front fan tray is located below the front air filter. Each quiet front fan tray
weighs about 17.8 lb (8.1 kg). The fan trays are hot-insertable and hot-removable. The
quiet upper and lower fan trays are not interchangeable with each other. The quiet lower
front fan tray is labeled
FAN-T-FBOT-S LOWER FANTRAY
Removing the T640 Quiet Lower Front Fan Tray on page 245
1.
Installing the T640 Quiet Lower Front Fan Tray on page 246
2.

Removing the T640 Quiet Lower Front Fan Tray

To remove the quiet lower front fan tray:
Attach an electrostatic discharge (ESD) grounding strap to your 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 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.
Chapter 17: Replacing T640 Router Hardware Components
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