Replacing The T640 Quiet Upper Front Fan Tray; Removing The T640 Quiet Upper Front Fan Tray; Figure 142: Installing The Quiet Lower Front Fan Tray - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

Figure 142: Installing the Quiet Lower Front Fan Tray

Related
Documentation

Replacing the T640 Quiet Upper Front Fan Tray

Removing the T640 Quiet Upper Front Fan Tray

302
T640 Cooling System Description on page 31
Maintaining the T640 Fan Trays on page 445
Troubleshooting the T640 Cooling System on page 469
T640 Preventing Electrostatic Discharge Damage on page 506
The upper front fan tray is located above the FPC card cage. 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 upper
front fan tray is labeled FAN-T-FTOP-S UPPER FANTRAY
Removing the T640 Quiet Upper Front Fan Tray on page 302
1.
Installing the T640 Quiet Upper Front Fan Tray on page 303
2.
To remove a quiet upper front fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Loosen the captive screws on the corners of the fan tray faceplate.
2.
Grasp both sides of the fan tray, and pull the fan tray out of the chassis approximately
3.
1 to 3 inches.
WARNING: To avoid injury, keep tools and your fingers away from the fans
as you slide the fan tray out of the chassis. The fans might still be spinning.
.
Figure 143 on page 303):
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