Juniper SRX3400, Hardware Manual, Page: 126 / 232

Replacing the Fan Tray on the SRX3400 Services Gateway
The services gateway has one fan tray that installs vertically in the right rear of the chassis.
The fan tray contains four fans. The fan tray is hot-removable and hot-insertable. It
weighs about 4.2 lb (1.9 kg).
NOTE: To prevent overheating, install the replacement fan tray immediately
after removing the existing fan tray.
To replace the fan tray:
1.
Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis. For more information about ESD, see
“Preventing
Electrostatic Discharge Damage to the SRX3400 Services Gateway” on page 145 .
2.
Turn the screw to the left on the fan tray door. Open it to the right and remove it.
Figure 44: Removing the Fan Tray Door
g036066
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2
3
3.
Grasp the fan tray and pull it out 1 in. (2.5 cm) to disengage its power connection. A
mechanical latch stops the fan tray from coming out any further.
4.
Wait for the fans to stop spinning.
WARNING: To avoid injury, do not proceed until the fans have stopped
spinning.
5.
After the fans have stopped spinning, lift upward on the latch at the bottom of the
fan tray to release it. See
Figure 45 on page 113 .
Copyright © 2013, Juniper Networks, Inc. 112
SRX3400 Services Gateway Hardware Guide