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Juniper T320 Replacing Manual

Replacing cooling system components
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Replacing the T320 Cooling System Components
Replacing a T320 Fan Tray
Replacing a T320 Fan Tray on page 1
Replacing a T320 Air Filter on page 5
The T320 router has two front fan trays. The front fan trays install horizontally in
the front of the chassis. Each front fan tray contains six fans. The two front fan trays
are interchangeable, but the rear fan tray is not interchangeable with the front fan
trays. The fan trays are hot-insertable and hot-removable.
1. Removing a T320 Front Fan Tray on page 1
2. Installing a T320 Front Fan Tray on page 2
3. Removing a T320 Rear Fan Tray on page 3
4. Installing a T320 Rear Fan Tray on page 4
Removing a T320 Front Fan Tray
The upper front fan tray is located above the FPC card cage, and the lower front fan
tray is located below the front air filter. Each fan tray weighs about 13.3 lb (6.0 kg).
To remove a front fan tray (see Figure 1):
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and
1.
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see Preventing Electrostatic Discharge Damage to an M Series, MX
Series, or T Series Router.
If you are removing the lower fan tray:
2.
Unwrap any PIC cables from the spools on the cable management system
a.
and remove the cables from the tray. Arrange the cables so that they do not
block the front of the cable management system and tray, and secure them
with temporary fasteners so that they are not supporting their own weight
as they hang from the connector.
CAUTION: Do not let fiber-optic cable hang free from the connector. Do not allow
fastened loops of cable to dangle, which stresses the cable at the fastening point.
Simultaneously pull the two releases on the cable management system. Lift
b.
it up and outward to lock it in place to access the lower fan tray.
Loosen the captive screws on the corners of the fan tray faceplate.
3.
Grasp the handles and pull the fan tray halfway out of the chassis.
4.
Replacing the T320 Cooling System Components
1

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Summary of Contents for Juniper T320

  • Page 1 Replacing a T320 Air Filter on page 5 Replacing a T320 Fan Tray The T320 router has two front fan trays. The front fan trays install horizontally in the front of the chassis. Each front fan tray contains six fans. The two front fan trays are interchangeable, but the rear fan tray is not interchangeable with the front fan trays.
  • Page 2 Unlock the cable management system and lower it to the fully lowered position. Rearrange the PIC cables in the cable management system. For more information about proper cable arrangement, see Maintaining T320 PICs and PIC Cables. Installing a T320 Front Fan Tray...
  • Page 3 Figure 2: Installing a Front T320 Fan Tray Removing a T320 Rear Fan Tray The rear fan tray is mounted vertically on the right side of the rear of the chassis. The rear fan tray contains five fans. The fan tray weighs about 7.3 lb (3.3 kg).
  • Page 4 Figure 3: Removing a Rear T320 Fan Tray Installing a T320 Rear Fan Tray To install a replacement rear fan tray (see Figure 4): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series Router.

  • Page 5: Replacing A T320 Air Filter

    Figure 4: Installing a Rear T320 Fan Tray Replacing a T320 Air Filter Removing a Front T320 Air Filter on page 5 Installing a Front T320 Air Filter on page 6 Removing a Rear T320 Air Filter on page 7...
  • Page 6 Figure 5: Removing the Front Air Filter Figure 6: Replacing the Front Filter Element Installing a Front T320 Air Filter To install the front air filter (see Figure 7): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  • Page 7 Rearrange the PIC cables in the cable management system. Figure 7: Installing the Front Air Filter Removing a Rear T320 Air Filter The rear air filter is located at the left rear edge of the chassis. The rear air filter weighs less than 1 lb (0.5 kg).
  • Page 8 Figure 8: Removing the Rear Air Filter Removing a Rear T320 Air Filter...
  • Page 9 Figure 9: Removing the Rear Air Filter Element Installing a Rear T320 Air Filter To install the rear air filter (see Figure 10): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  • Page 10 Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series Related Topics Router Replacing the T320 Connections to Routing Engine Interface Ports T320 Routing Engine Interface Cable and Wire Specifications Maintaining the T320 Air Filters T320 Cooling System Description...