Juniper EX9214 Hardware Manual page 217

Ensure that you have the following parts and tools available:
• ESD grounding strap
• Phillips (+) screwdrivers, number 1 and 2
CAUTION: The fan tray can be removed and replaced while the switch is operating.
However, the fan tray must be replaced within 2 minutes of removing the fan tray to
prevent the chassis from overheating.
The fan tray in an EX9200 switch is a hot-insertable and hot-removable field-replaceable unit (FRU): You
can remove and replace it while the switch is running without turning off power to the switch or
disrupting switching functions.
To install a fan tray in an EX9200 switch:
1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
2. Grasp the fan tray handle, and insert it straight into the chassis. Note the correct orientation by the
This side up label on the top surface of the fan tray.
3. Tighten the captive screws using a screwdriver on the fan tray faceplate to secure it in the chassis.
Figure 65 on page 207 shows installing a fan try in an EX9208 switch. The procedure and orientation of
the fan tray are the same for EX9204. The procedure is the same for EX9214 switch; however, the
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