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Maintaining MX2008 Cooling System Components

Replacing the MX2008 Air Filters

Note:

The MX2008, MX2010, and MX2020 routers support the same fan modules.

Removing the MX2008 Air Filter

CAUTION:

Do not run the router for more than a few minutes without the air filter in place.

CAUTION:

Always keep the air filter in place while the router is operating, except during replacement. Because the fans are very powerful, they could pull small bits of wire or other materials into the router through the unfiltered air intake. This could damage the router components.

To remove the air filter:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Loosen the two captive screws located on either side of the fan tray and air filter access door.
    Note:

    Removing the cables from the DC cable manager is not necessary to access the air filter.

    CAUTION:

    Do not run the router for more than 2 minutes without the air filter in place.

  3. Grasp the handle on the air filter, and pull the air filter straight out from the chassis.
    Note:

    The air filter has a built-in handle.

  4. Slide the air filter out of the chassis as shown in Figure 1.
    Figure 1: Removing the Air Filter from the ChassisRemoving the Air Filter from the Chassis

To remove the PSM air filter:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

  2. Loosen the two captive screws located on either side of the air filter and pull slightly out of the chassis.

    CAUTION:

    Do not run the router for more than 2 minutes without the air filter in place.

  3. Grasp the PSM air filter, and pull the air filter straight out from the chassis.

  4. Slide the air filter out of the chassis as shown in Figure 2.

    Note:

    The AC–powered MX2008 router has the same air filter.

    Figure 2: Removing the PSM Air Filter from the ChassisRemoving the PSM Air Filter from the Chassis

    To remove the PSM air filter—MX2000-FLTR-PWR for a chassis with the DC PDM (240 V China) or universal HVAC/HVDC PDM installed:

    1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

    2. Remove the screws from the mechanical interlock bracket to remove it. See Figure 3 and Figure 4 .

      Figure 3: Removing the bracket from the PDMRemoving the bracket from the PDM
      Figure 4: Removing the Bracket from the Universal (HVAC/HVDC) PDMRemoving the Bracket from the Universal (HVAC/HVDC) PDM

    3. Loosen the two captive screws located on either side of the air filter and pull slightly out of the chassis.

      CAUTION:

      Do not run the router for more than 2 minutes without the air filter in place.

    4. Grasp the PSM air filter, and pull the air filter straight out from the chassis.

    5. Slide the air filter out of the chassis as shown in Figure 5 and Figure 6.

      Figure 5: Removing the PSM Air Filter from the ChassisRemoving the PSM Air Filter from the Chassis
      Figure 6: Removing the PSM (for the Universal HVAC/HVDC) Air Filter from the ChassisRemoving the PSM (for the Universal HVAC/HVDC) Air Filter from the Chassis

    6. Make sure to re-install the mechanical interlock bracket after you remove the filter. Secure the screws on the mechanical interlock bracket.

      Figure 7: Installing the Mechanical Interlock BracketInstalling the Mechanical Interlock Bracket
      Figure 8: Installing the Mechanical Interlock Bracket (with Universal HVAC/HVDC PSM Installed)Installing the Mechanical Interlock Bracket (with Universal HVAC/HVDC PSM Installed)

Installing the MX2008 Air Filter

To install the air filter:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Ensure that the air filter is right side up.
  3. Open the fan tray and air filter access door, located at the bottom of the chassis.
  4. Grasp the handle on the air filter and insert into the chassis until it stops (see Figure 9).
  5. Close the access door and tighten the two captive screws to secure.
  6. Lower the cable manager back into position, and rearrange the cables in the cable manager.
Figure 9: Installing the Air FilterInstalling the Air Filter

To install the PSM air filter:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

  2. Ensure that the air filter is right side up.

  3. Grasp the PSM air filter and insert into the chassis until it stops, (see Figure 10).

  4. Tighten the two captive screws to secure.

    Note:

    The AC–powered MX2008 router has the same air filter.

Figure 10: Installing the PSM Air FilterInstalling the PSM Air Filter

To install the PSM air filter—MX2000-FLTR-PWR for chassis with 240 V China power supplies and universal (HVAC/HVDC) power supplies:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.

  2. Unscrew the mechanical interlock bracket from the PDM (see Figure 11 and Figure 12).

    Figure 11: Removing the Bracket from the 240 V China PDMRemoving the Bracket from the 240 V China PDM
    Figure 12: Removing the Bracket from the Universal (HVAC/HVDC) PDMRemoving the Bracket from the Universal (HVAC/HVDC) PDM

  3. Ensure that the air filter is right side up.

  4. Grasp the PSM air filter and insert into the chassis until it stops, (see Figure 13).

  5. Tighten the two captive screws to secure.

    Figure 13: Installing the PSM FilterInstalling the PSM Filter

  6. Install the mechanical interlock bracket and tighten the screws. See Figure 14 and Figure 15.

    Figure 14: Installing the Bracket (with 240 V China PSM Installed) Installing the Bracket (with 240 V China PSM Installed)
    Figure 15: Installing the Mechanical Interlock Bracket (with Universal HVAC/HVDC PSM Installed)Installing the Mechanical Interlock Bracket (with Universal HVAC/HVDC PSM Installed)

See Also

Replacing an MX2008 Fan Tray

Note:

The MX2008, MX2010, and MX2020 routers support the same fan modules.

Removing an MX2008 Fan Tray

CAUTION:

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

To remove the lower fan trays (see Figure 16):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Reposition the DC cable manager, if necessary, before removing the lower fan tray:

    • Unwrap any cables on the DC cable manager, and remove the cables from the tray. Arrange the cables so that they do not block the front of the cable manager and tray, and secure them with temporary fasteners so that they are not supporting their own weight as they hang from the connector.

  3. Loosen the two captive screws on each side of the fan tray access panel and open.
  4. Loosen the two captive screws on the fan tray faceplate.
  5. While grasping the handle, press and hold the latch until the status LED turns off. Pull the fan tray out approximately 1 to 3 inches until it stops.
    Note:

    The fan trays are interchangeable and are hot-insertable and hot-removable.

  6. Press and hold the latch a second time to disengage fan operation. Place one hand under the fan tray for support while pulling the fan tray completely out of the router.
    Warning:

    The fan trays use a double latch safety mechanism. You must continually press and hold the latch while removing the fan trays.

  7. Place the fan tray on an antistatic mat or in an approved ESD bag.
Warning:

Before removing a fan tray, make sure the fan blades have stopped completely.

Figure 16: Removing Fan TraysRemoving Fan Trays

Installing an MX2008 Fan Tray

This topic describes how to install the lower fan trays in a MX2008. This procedure applies to both the standard fan tray and the optimized power fan tray.

To install the lower fan tray (see Figure 17):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Reposition the DC cable manager, if necessary, before installing the lower fan tray:

    • Unwrap any cables on the DC cable manager and remove the cables from the tray. Arrange the cables so that they do not block the front of the cable manager, and tray and secure them with temporary fasteners so that they are not supporting their own weight as they hang from the connector.

  3. Loosen the two captive screws on the access panel and open.
  4. Remove the fan tray from the antistatic mat or ESD bag.
  5. Grasp the fan tray by the handle, and place one hand under the fan tray for support. Insert the fan tray partially into the chassis while pressing the latch.
    Note:

    When inserting the fan tray, observe the correct orientation by the "this side up" label on the fan tray.

  6. Press and hold the latch again while carefully pushing the fan tray into the chassis.
    Note:

    The fan tray has a double-locking safety mechanism that allows you to safely install the fan tray in a two-stage process.

  7. Tighten the two captive screws on the fan tray faceplate.
  8. Close the access panel and secure the two captive screws on either side of the access panel.
  9. Reinstall the DC cable manager back into position, if necessary.

Figure 17: Installing Fan TraysInstalling Fan Trays

See Also