Removing A Fan Tray From An Ex9253 Switch - Juniper EX9253 Hardware Manual

Installing a Fan Tray in an EX9253 Switch | 112
Maintaining the Fan Tray in EX9253 Switches | 114
Removing the Air Filter Unit from an EX9253 Switch | 116
Installing the Air Filter Unit in an EX9253 Switch | 117
Removing the Air Filter from the Air Filter Unit in an EX9253 Switch | 118
Installing the Air Filter in the Air Filter Unit in an EX9253 Switch | 120
Maintaining the Air Filter in EX9253 Switches | 121

Removing a Fan Tray from an EX9253 Switch

Before you begin to remove a fan tray:
• Ensure you understand how to prevent electrostatic discharge (ESD) damage (see
Electrostatic Discharge Damage
Ensure that you have the following parts and tools available:
• An ESD wrist strap
• A Phillips (+) screwdriver, number 2 (not provided)
• A replacement fan tray
The fan trays are hot-removable and hot-insertable field-replaceable units installed in the rear panel of
the switch. You can replace them without powering off the switch or disrupting switch functions.
CAUTION: You must replace the fan tray within two minutes of removing the fan tray
to prevent the chassis from overheating.
To remove a fan tray from an EX9253 switch chassis (see
1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the switch.
2. Loosen the screw on the fan tray faceplate using the Phillips (+) screwdriver, number 2.
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 40 on page
Prevention of
112):
111