Replacing A T4000 Rear Fan Tray; Removing The T4000 Rear Fan Tray; Figure 107: Installing An Upper Front Fan Tray - Juniper T4000 Hardware Manual

T4000 Router Hardware Guide
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Replacing a T4000 Rear Fan Tray

Removing the T4000 Rear Fan Tray

240
Tighten the captive screws on each side of the fan tray faceplate to secure it in the
3.
chassis.

Figure 107: Installing an Upper Front Fan Tray

T Ser ies
FANTR AY-T40 00
T4000 Cooling System Description on page 21
Troubleshooting the T4000 Cooling System on page 193
T4000 Clearance Requirements for Airflow and Hardware Maintenance on page 59
Maintaining the T4000 Fan Trays on page 181
The rear fan tray is mounted vertically on the right side of the rear of the chassis. The rear
fan tray contains eight fans, and is not interchangeable with the front fan trays. The rear
fan tray must be used in conjunction with the front fan trays. The rear fan tray weighs
about 10 lb (4.5 kg).
CAUTION: To maintain proper cooling, do not operate the routing node with
the rear fan tray removed for more than one minute.
Removing the T4000 Rear Fan Tray on page 240
1.
Installing the T4000 Rear Fan Tray on page 241
2.
To remove the 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.
Figure 108 on page 241):
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