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Replace Fans on the MX301

A part of the MX301 maintenance involves removing and installing the fan modules.

On the MX301 Router, you can remove and replace up to one fan module without powering off the router or disrupting the device functions.

Before you remove or install a fan module, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage.

Ensure that you have the following parts and tools:

  • An electrostatic discharge (ESD) grounding strap

  • An antistatic bag or an antistatic mat

  • A replacement fan module

CAUTION:

To prevent components in the chassis from overheating and shutting down, you must replace the fan module within a certain period of removing the existing fan module. For information on how long you can safely replace a fan module under different optics and temperature settings, see Table 1.

Remove a Fan Module from the MX301

Remove a JNP-FAN3-1RU

This topic guides you through the steps to remove the JNP-FAN3-1RU fan module from the MX301 Router.

To remove the JNP-FAN3-1RU fan module:
  1. Wrap and fasten one end of the electrostatic discharge (ESD) cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  3. Firmly hold the handle on the fan module and push the release latch to the right to release the fan module from the chassis. The direction in which you must push the release latch is indicated by the Push to Release label on the handle.
    Figure 1: Remove the Fan Module Remove the Fan Module
    Warning:

    To prevent injury, do not touch a fan with your hands or any tools when you slide the fan module out of the chassis—the fan might still be running.
  4. Pull firmly to slide the fan module halfway out of the chassis.
  5. After ensuring that the fans in the fan module have stopped spinning, slide the fan module completely out of the chassis.
  6. Place the fan module in the antistatic bag or on the antistatic mat.

Install a Fan Module in the MX301

Install a JNP-FAN3-1RU

This topic guides you through the steps to install the JNP-FAN3-1RU fan module in the MX301 Router.

To install the JNP-FAN3-1RU fan module:
  1. Wrap and fasten one end of the electrostatic discharge (ESD) cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Remove the replacement fan module from its bag.
  3. Align the fan module in the fan module slot on the rear panel of the router and slide the module in until it is fully seated. You will hear a distinct click sound when the fan module securely latches into position.
    Figure 2: Install the Fan Module Install the Fan Module