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Maintaining the MX5, MX10, MX40, and MX80 Fan Tray

Maintaining the MX5, MX10, MX40, and MX80 Fan Tray

Purpose

For optimum cooling, verify the condition of the fans.

Action

  • Monitor the status of the fans. A fan tray contains multiple fans that work in unison to cool the router components. If one fan fails, the router adjusts the speed of the remaining fans to maintain proper cooling. A red alarm is triggered when a fan fails, and a yellow alarm and red alarm are triggered when a fan tray is removed.

  • To display the status of the cooling system, issue the show chassis environment command. The output is similar to the following:

Replacing an MX5, MX10, MX40, and MX80 Fan Tray

Removing an MX5, MX10, MX40, and MX80 Fan Tray

Note:

To prevent overheating, install the replacement fan tray immediately after removing the existing fan tray.

To remove the fan tray (see Figure 1):

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Loosen the captive screw on the fan tray faceplate.
  3. Grasp the fan tray handle, and pull it out approximately 1 to 3 inches.
    Warning:

    To avoid injury, keep tools and your fingers away from the fans as you slide the fan module out of the device. The fans might still be spinning.

  4. Press the latch located on the inside of the fan tray to release it from the chassis.
  5. Place one hand under the fan tray to support it, and pull the fan tray completely out of the chassis.
Figure 1: Removing the Fan TrayRemoving the Fan Tray

Installing an MX5, MX10, MX40, and MX80 Fan Tray

To install the fan tray (see Figure 2):

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Grasp the fan tray handle, and insert it straight into the chassis.
  3. Tighten the captive screw on the fan tray faceplate to secure it in the chassis.
Figure 2: Installing the Fan TrayInstalling the Fan Tray