Replacing The T640 Quiet Rear Fan Tray; Removing The T640 Quiet Rear Fan Tray; Figure 144: Installing The Quiet Upper Front Fan Tray - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide

Figure 144: Installing the Quiet Upper Front Fan Tray

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Documentation

Replacing the T640 Quiet Rear Fan Tray

Removing the T640 Quiet Rear Fan Tray

304
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 rear fan tray is mounted vertically on the right side of the rear of the chassis. The
quiet rear fan tray contains eight fans, and is not interchangeable with the front fan trays.
The quiet rear fan tray must be used in conjunction with the quiet front fan trays. The
quiet rear fan tray weighs about 10 lb (4.5 kg).
Removing the T640 Quiet Rear Fan Tray on page 304
1.
Installing the T640 Quiet Rear Fan Tray on page 305
2.
To remove the quiet rear fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to an approved site ESD grounding point.
Loosen the captive screws on the top and bottom of the fan tray faceplate.
2.
Grasp the handles, and pull the fan tray halfway out of the chassis.
3.
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 145 on page 305):
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