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Install and Remove PTX10008 Cooling System Components

The PTX10008 router has two independent, field-replaceable fan trays. To install or remove the fan trays and fan tray controller, see the following sections.

Install a PTX10008 Fan Tray

Before you begin to install a fan tray:

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

  • Ensure that you have the following parts and tools available to install a fan tray in a PTX10008 router:

    • Electrostatic discharge (ESD) grounding strap

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

    • A replacement fan tray

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 three models of the fan tray, JNP10008-FAN, JNP10008-FAN2, and JNP10008-FAN3. You must not install different types of fan trays in the same chassis.

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

To install any PTX10008 fan tray:

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist and connect the other end of the strap to one of the ESD points on the chassis (see Figure 1).
    Figure 1: ESD Point on the Rear of the PTX10008 ChassisESD Point on the Rear of the PTX10008 Chassis
      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 the screws are finger tight. See Figure 2, Figure 3, and Figure 4.
Figure 2: Install the Fan Tray JNP10008-FAN in a PTX10008 Install the Fan Tray JNP10008-FAN in a PTX10008
Figure 3: Install the Fan Tray JNP10008-FAN2 in a PTX10008 Install the Fan Tray JNP10008-FAN2 in a PTX10008
Figure 4: Install the Fan Tray JNP10008-FAN3 in a PTX10008 Install the Fan Tray JNP10008-FAN3 in a PTX10008

Remove a PTX10008 Fan Tray

The PTX10008 chassis has two independent, field-replaceable fan trays. Each fan tray is a hot-removable and hot-insertable field-replaceable units (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 three models of fan tray for the PTX10008 (JNP10008-FAN, JNP10008-FAN2, and JNP10008-FAN3).

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

Before you remove a fan tray:

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

  • Ensure that you have the following parts and tools available:

    • Electrostatic discharge (ESD) grounding strap

    • A replacement fan tray

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

Note:

If you are replacing the fan tray, run the fan tray at 100% speed for at least 10 minutes before you start the replacement procedure.

If Junos OS is installed in your router, use the test chassis fan tray 0 speed full-speed and test chassis fan tray 1 speed full-speed commands to configure the fans to operate at 100% speed.

If Junos OS Evolved is installed in your router, use the request chassis fan tray 0 speed 100 and request chassis fan tray 1 speed 100 commands to configure the fans to operate at 100% speed.

After you replace the fan tray, you must configure the fan trays to operate at the normal speed. If Junos OS is installed in your router, use the test chassis fan tray 0 speed normal and test chassis fan tray 1 speed normal commands to configure the fan trays to operate at the normal speed. If Junos OS Evolved is installed in your router, use the request chassis fan tray 0 speed normal and request chassis fan tray 1 speed normal commands to configure the fan trays to operate at the normal speed.

You must replace only one fan tray at a time.

If you have JNP10008-SF or JNP10008-SF3 switch fabric installed in the router, you must replace the fan tray within the time mentioned in Table 1 of removing the fan tray to prevent overheating of the chassis. If you are removing a JNP10008-FAN2 or JNP10008-FAN3 fan tray to access a Switch Interface Board (SIB), we recommend that you either perform the necessary work during a maintenance window or reinstall the fan tray within time mentioned in Table 1. If you have JNP10008-SF5 switch fabric installed in the router, you must replace the fan tray within the time mentioned in Table 2 of removing the fan tray to prevent overheating of the chassis.

We recommend that you take offline the SIB behind the fan tray that you plan to remove by using the request chassis sib slot slot number offline command.

Table 1: Replacement Duration for the Fan Tray (in Routers with JNP10008-SF or JNP10008-SF3 Switch Fabric Installed)

Chassis Ambient Temperature

Duration

20° C

5 minutes

30° C

2.3 minutes

40° C

1.2 minutes
Table 2: Replacement Duration for the Fan Tray (in Routers with JNP10008-SF5 Switch Fabric Installed)

Chassis Ambient Temperature

Traffic (%) with 800-G ZR Transceivers Installed in 25% of the Ports

Number of SIBs Offline

Duration (mm:ss)

25° C

Up to 25%

1

2:37

25° C

Up to 25%

2

3:27

25° C

Up to 50%

3

3:08

30° C

Up to 25%

3

3:35

30° C

Up to 25%

1

2:07

30° C

Up to 25%

2

2:39

30° C

Up to 50%

3

2:29

To remove a PTX10008 fan tray (JNP10008-FAN, JNP10008-FAN2, or JNP10008-FAN3):

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist and connect the other end of the strap to one of the ESD points on the chassis (see Figure 5).
    Figure 5: ESD Point on the Rear of the PTX10008 ESD Point on the Rear of the PTX10008
      1
    —

    ESD point
  2. Loosen the four captive screws either by unscrewing with your thumb and forefinger or with a Phillips screwdriver.
  3. Grasp the top and bottom handles and pull the fan tray out about 3 in. (7.6 cm). See Figure 6, Figure 7, and Figure 8.
    Figure 6: Remove a JNP10008-FAN Fan Tray Remove a JNP10008-FAN Fan Tray
    Figure 7: Remove a JNP10008-FAN2 Fan Tray Remove a JNP10008-FAN2 Fan Tray
    Figure 8: Remove a JNP10008-FAN3 Fan Tray Technical illustration of a modular electronic system with green arrows highlighting actions like turning knobs and removing modules.
  4. Tilt the top of the fan tray forward.
  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.

Install a PTX10008 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 three models of fan tray controller for the PTX10008, JNP10008-FAN-CTRL, JNP10008-FTC2, and JNP10008-FTC3. See Figure 9 and Figure 10.

Figure 9: JNP10008-FAN-CTRL JNP10008-FAN-CTRL
Figure 10: JNP10008-FTC2 or JNP10008-FTC3 JNP10008-FTC2 or JNP10008-FTC3
CAUTION:

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

In order to install 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 Interface Boards (SIBs) at the top of the chassis.

Before you install a fan tray controller:

  • Ensure that you have removed the associated fan tray and fan tray controller. See Remove a PTX10008 Fan Tray and Remove a PTX10008 Fan Tray Controller.

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

  • Ensure that you have the following parts and tools available to install a fan tray controller into a PTX10008:

    • Electrostatic discharge (ESD) grounding strap

    • Replacement fan tray controller (JNP10008-FAN-CTRL, JNP10008-FTC2 or JNP10008-FTC3)

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

To install a fan tray controller:

  1. Remove the replacement fan tray controller from the antistatic bag.
  2. Carefully slide the fan tray controller into the fan tray controller slot until it is flush with the mounting holes. See Figure 11 and Figure 12.
    Figure 11: Install a JNP10008-FAN-CTRL Install a JNP10008-FAN-CTRL
    Figure 12: Install a JNP10008-FTC2 or JNP10008-FTC3 Illustration showing installation or removal process of a server module with green circles and arrows highlighting screws or latches.
  3. Using a Phillips screwdriver, tighten the captive screws for the fan tray controller.
  4. Reinstall the fan tray. See Install a PTX10008 Fan Tray.

Remove a PTX10008 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 three models of fan tray controller:

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

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

  • JNP10008-FTC3, which supports fan tray JNP10008-FAN3 and JNP10008-FAN2

See Figure 13 for the JNP10008-FAN-CTRL and Figure 14 for the JNP10008-FTC2.

Figure 13: JNP10008-FAN-CTRL JNP10008-FAN-CTRL
Figure 14: JNP10008-FTC2 or JNP10008-FTC3 JNP10008-FTC2 or JNP10008-FTC3
CAUTION:

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

In order 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 interface boards (SIBs) at the top of the chassis.

Before you remove a fan tray controller:

  • Ensure that 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 controller from a PTX10008:

    • 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

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

  1. Remove the fan tray. See Remove a PTX10008 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 15 for the JNP10008-FAN-CTRL and Figure 16 for the JNP10008-FTC2.
    Figure 15: Remove a JNP10008-FAN-CTRL Remove a JNP10008-FAN-CTRL
    Figure 16: Remove a JNP10008-FTC2 or JNP10008-FTC3 Installing or removing a power supply unit from a network chassis, highlighting screws, connectors, and locking mechanisms.
  4. Place the fan tray controller in an antistatic bag or on an antistatic mat.

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