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Maintaining the EX4200 Cooling System

 

Removing a Fan Tray from an EX4200 Switch

The fan tray in an EX4200 switch is a hot-removable and hot-insertable field-replaceable unit (FRU) located on the rear panel of the switch: You can remove and replace it without powering off the switch or disrupting switch functions.

Ensure that you have the following parts and tools available:

  • Phillips (+) screwdriver, number 2

  • An antistatic bag or an antistatic mat

To remove a fan tray from the switch:

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. Loosen the screw or screws securing the fan tray by using the screwdriver.Warning

    To avoid injury, do not touch the fan with your hands or any tools as you slide the fan tray out of the chassis—the fan may still be running.

  3. Grasp the handle on the fan tray and pull firmly to slide the fan tray halfway out of the chassis.
  4. When the fan stops spinning, slide the fan tray completely out of the chassis.
  5. Place the fan tray in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
Figure 1: Removing a Fan Tray from an EX4200 Switch
Removing
a Fan Tray from an EX4200 Switch
Note

When a fan tray is removed, Fan/Blower is Absent is logged in the system log and the system raises a minor alarm.

Installing a Fan Tray in an EX4200 Switch

The fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU) installed in the rear panel of the switch: You can remove and replace it without powering off the switch or disrupting switch functions.

All the EX4200 switch models, except the EX4200-24F-S and EX4200-48T-S switches are shipped with one fan tray pre-installed in the rear panel of the switches. EX4200-24F-S and EX4200-48T-S switches are not shipped with pre-installed fan tray; you must order them separately.

Ensure that you have the following parts and tools available:

  • A Phillips (+) screwdriver, number 2

To install a fan tray in an EX4200 switch chassis (see Figure 2):

Caution

If you are installing a fan tray in an EX4200 switch, ensure the fans face downwards.

  1. Remove the fan tray from its bag. Using both hands, align the tray with the fan tray guides on the fan tray slot on the rear panel of the chassis and slide it in until it is fully seated.
  2. Tighten the screw or screws on the fan tray by using the screwdriver.
Figure 2: Installing a Fan Tray in an EX4200 Switch
Installing
a Fan Tray in an EX4200 Switch