Maintaining the MX5, MX10, MX40, and MX80 Fan Tray
Maintaining the MX5, MX10, MX40, and MX80 Fan Tray
Purpose
For optimum cooling, verify the condition of the fans.
Action
Monitor the status of the fans. A fan tray contains multiple fans that work in unison to cool the router components. If one fan fails, the router adjusts the speed of the remaining fans to maintain proper cooling. A red alarm is triggered when a fan fails, and a yellow alarm and red alarm are triggered when a fan tray is removed.
To display the status of the cooling system, issue the show chassis environment command. The output is similar to the following:
user@host> show chassis environmentClass Item Status Measurement Temp PEM 0 OK 45 degrees C / 113 degrees F PEM 1 OK 45 degrees C / 113 degrees F RE 0 Intake OK 33 degrees C / 91 degrees F RE 0 Front Exhaust OK 38 degrees C / 100 degrees F RE 0 Rear Exhaust OK 38 degrees C / 100 degrees F Routing Engine OK 33 degrees C / 91 degrees F Routing Engine CPU OK 54 degrees C / 129 degrees F TFEB 0 QX 0 TSen OK 44 degrees C / 111 degrees F TFEB 0 QX 0 Chip OK 47 degrees C / 116 degrees F TFEB 0 LU 0 TSen OK 44 degrees C / 111 degrees F TFEB 0 LU 0 Chip OK 50 degrees C / 122 degrees F TFEB 0 MQ 0 TSen OK 44 degrees C / 111 degrees F TFEB 0 MQ 0 Chip OK 49 degrees C / 120 degrees F TFEB 0 TBB PFE TSen OK 37 degrees C / 98 degrees F TFEB 0 TBB PFE Chip OK 50 degrees C / 122 degrees F TFEB 0 TFEB PCIE TSen OK 45 degrees C / 113 degrees F TFEB 0 TFEB PCIE Chip OK 68 degrees C / 154 degrees F Fans Fan 1 OK Spinning at intermediate-speed Fan 2 OK Spinning at intermediate-speed Fan 3 OK Spinning at intermediate-speed Fan 4 OK Spinning at intermediate-speed Fan 5 OK Spinning at intermediate-speed
See also
Replacing an MX5, MX10, MX40, and MX80 Fan Tray
Removing an MX5, MX10, MX40, and MX80 Fan Tray
To prevent overheating, install the replacement fan tray immediately after removing the existing fan tray.
To remove the fan tray (see Figure 1):
- Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point.
- Loosen the captive screw on the fan tray faceplate.
- Grasp the fan tray handle, and pull it out approximately
1 to 3 inches.
Warning To avoid injury, keep tools and your fingers away from the fans as you slide the fan module out of the chassis. The fans might still be spinning.
- Press the latch located on the inside of the fan tray to release it from the chassis.
- Place one hand under the fan tray to support it, and pull the fan tray completely out of the chassis.
See also
Installing an MX5, MX10, MX40, and MX80 Fan Tray
To install the fan tray (see Figure 2):
- Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point.
- Grasp the fan tray handle, and insert it straight into the chassis.
- Tighten the captive screw on the fan tray faceplate to secure it in the chassis.
