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Removing and Installing MX10008 Cooling System Components

 

An MX10008 router has two independent, field-replaceable fan trays. Fan trays must be replaced within the duration mentioned in Table 1.

Table 1: Replacement Duration for the Fan Tray

Chassis Ambient Temperature

Duration

27°C

5 minutes

35°C

3 minutes

40°C

2 minutes

Note

When replacing the fans or SFBs at 40°C chassis ambient temperature, ensure that the fans run at 100% fan speed for at least 10 minutes before replacing the fans or SFBs.

Use the test chassis fan tray 0 speed minutesfull-speed and test chassis fan tray 1 speed full-speed commands to set the chassis fans to 100% speed.

To install or remove the fan trays and fan tray controller, see the following sections:

Removing an MX10008 Fan Tray

An MX10008 has two independent, field-replaceable fan trays. Each fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace the fan tray while the router is running without turning off power to the router or disrupting routing functions. There are two models of the fan tray, JNP10008-FAN and JNP10008-FAN2.

Caution

Do not remove the fan tray unless you have a replacement fan tray available.

Each fan tray is installed vertically on the rear, or FRU-side, of the chassis.

Before you remove a fan tray:

  • Ensure you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

  • Ensure that you have the following parts and tools available to remove a fan tray:

    • Electrostatic discharge (ESD) grounding strap

    • Replacement fan tray

    • A Phillips (+) screwdriver, number 1 or 2 (optional), for the captive screws



Caution

A fan tray can be removed and replaced while the router is operating. Fan trays must be replaced within the duration mentioned in Replacement Duration for the Fan Tray .

To remove either the JNP10008-FAN or the JNP10008-FAN2 fan tray:

  1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the rear left side of the chassis. See Figure 1.
    Figure 1: ESD Point on the Rear of an MX10008
    ESD Point on the Rear of
an MX10008
      1
    ESD point
     
  2. Loosen the four captive screws either by unscrewing with your thumb and forefinger or by using a Phillips screwdriver.
  3. Grasp the top and bottom handles and pull the fan tray out about 3 in. (7.6 cm). See Figure 2 and Figure 3.
    Figure 2: Removing Fan Tray JNP10008-FAN from an MX10008
    Removing Fan Tray
JNP10008-FAN from an MX10008
    Figure 3: Removing Fan Tray JNP10008-FAN2 from an MX10008
    Removing Fan Tray JNP10008-FAN2
from an MX10008
  4. Tilt the top of the fan tray forward.Caution

    See the heat symbol on the fan tray. The fan handle and its surfaces including the power supply handles may be hot. Wear proper protective, heat-resistant gloves while removing the fan tray.

  5. Using both hands, lift the fan tray out of the slot and rest it on a flat surface with the handles to the side.Caution

    Fan trays must be replaced within the duration mentioned in Replacement Duration for the Fan Tray .

Installing an MX10008 Fan Tray

An MX10008 chassis has two independent, field-replaceable fan trays. Each fan tray is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace the fan tray while the router is running without turning off power to the router or disrupting routing functions. There are two models of the fan tray, JNP10008-FAN and JNP10008-FAN2.

Each fan tray is installed vertically on the rear, or FRU-side, of the chassis.

Before you begin to install a fan tray:

Ensure that you have the following parts and tools available to install a fan tray:

  • Electrostatic discharge (ESD) grounding strap

  • A Phillips (+) screwdriver, number 1 or 2 (optional), for the captive screws

  • A replacement fan tray

Caution

The fan tray can be removed and replaced while the router is operating. Fan trays must be replaced within the duration mentioned in Replacement Duration for the Fan Tray .



To install either the JNP10008-FAN or the JNP10008-FAN2 fan tray:

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the rear left side of the chassis (see Figure 4).
    Figure 4: ESD Point on the Rear of an MX10008
    ESD Point on the Rear of an
MX10008
      1
    ESD point
     
  2. Grasp the top and bottom fan tray handles and align the bottom of the fan tray with the bottom of the fan tray slot.
  3. Rest the bottom edge of the fan tray in the slot and slide the fan tray into place so it is fully seated.
  4. Tighten the captive screws until finger tight. See Figure 5 or Figure 6.
Figure 5: Installing Fan Tray JNP10008-FAN in an MX10008
Installing Fan Tray JNP10008-FAN
in an MX10008
Figure 6: Installing Fan Tray JNP10008-FAN2 in an MX10008
Installing Fan Tray JNP10008-FAN2
in an MX10008

Removing an MX10008 Fan Tray Controller

For each of the two fan trays, there is a fan tray controller. Each controller is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace one fan tray controller while the router is running without turning off power to the router or disrupting routing functions. There are two models of fan tray controller for the MX10008:

  • JNP10008-FAN-CTRL, which supports fan tray JNP10008-FAN

  • JNP10008-FTC2, which supports fan tray JNP10008-FAN2

See Figure 7 for JNP10008-FAN-CTRL and Figure 8.

Figure 7: JNP10008-FAN-CTRL
JNP10008-FAN-CTRL
Figure 8: JNP10008-FTC2
JNP10008-FTC2
Caution

Do not remove the fan tray controller unless you have a replacement controller available.

To access a fan tray controller, you must first remove the fan tray. With the fan tray removed, the fan tray controller is installed horizontally above the Switch Fabric Boards (SFBs) at the top of the chassis.

Before you remove a fan tray controller:

Ensure that you have the following parts and tools available to remove a fan tray controller:

  • Electrostatic discharge (ESD) grounding strap

  • An electrostatic bag or an antistatic mat

  • Replacement fan tray controller

  • A Phillips (+) screwdriver, number 1, for the captive screws

All models of fan controller are removed using the same procedure.

  1. Remove the fan tray. See Removing an MX10008 Fan Tray.
  2. Loosen the two captive screws on each side of the fan tray controller.
  3. Grasp the fan tray controller and pull it straight out of the slot. See Figure 9 for the MX10008.
    Figure 9: Removing an MX10008 Fan Tray Controller
    Removing an MX10008 Fan
Tray Controller
  4. Place the fan tray controller in an electrostatic bag or on an antistatic mat.

Installing an MX10008 Fan Tray Controller

Each fan tray of an MX10008, has a fan tray controller. Each controller is a hot-removable and hot-insertable field-replaceable unit (FRU); you can remove and replace one fan tray controller while the router is running without turning off power to the router or disrupting routing functions. There are two models of fan tray controller for the MX10008, JNP10008-FAN-CTRL and JNP10008-FTC2, see Figure 10 and Figure 11.

Figure 10: JNP10008-FAN-CTRL
JNP10008-FAN-CTRL
Figure 11: JNP10008-FTC2
JNP10008-FTC2
Caution

Do not remove the fan tray controller unless you have a replacement controller available.

To access a fan tray controller, you must first remove the associated fan tray. With the fan tray removed, the fan tray controller is installed horizontally above the Switch Fabric Boards (SFBs) at the top of the chassis.

Before you replace a fan tray controller:

Ensure that you have the following parts and tools available to install a fan tray controller:

  • Electrostatic discharge (ESD) grounding strap

  • Replacement fan tray controller

  • A Phillips (+) screwdriver, number 1 for the captive screws

To install a fan tray controller:

  1. Remove the replacement fan tray controller from the electrostatic bag.
  2. Carefully slide the fan tray controller into the fan tray controller slot until it is flush with the mounting holes. See Figure 12.
    Figure 12: Replacing an MX10008 Fan Tray Controller
    Replacing an MX10008
Fan Tray Controller
  3. Using a Phillips screwdriver, tighten the captive screws for the fan tray controller.
  4. Replace the fan tray. See Installing an MX10008 Fan Tray.