This chapter provides instructions for replacing an upper or lower fan tray that has either partially or completely failed.
The system’s upper fan tray draws air up through the chassis for cooling and ventilation. It then exhausts the heated air through the vents at the upper-rear of the chassis.
The system’s lower fan tray assembly draws air into the chassis through the front and sides for cooling and ventilation.
CAUTION: Do not operate the chassis without the fan tray(s) installed. Doing so even for short periods of time may cause the system to overheat and result in component damage.
ESD During installation, maintenance, and/or removal, wear grounding wrist straps to avoid ESD damage to the components. Failure to do so could result in damage to electrical components and could potentially void your warranty.The system has several ways to indicate a fan tray failure. The first indicator is that the Status LED on the Switch Processor Card (SPC) turns red to indicate the failure of a chassis component.
If you see a red Status LED on the SPC, you can determine whether it is a fan tray failure by using the CLI or checking the Simple Network Management Protocol (SNMP) traps that are generated.
To monitor chassis temperature and fan speed, issue the following command in the CLI’s Execute mode:
Upper Fan Controller: State=All Running Speed=Normal Temp=20 (C)
Lower Fan Controller: State=All Running Speed=Normal Temp=20 (C)
The system supports SNMP traps that are triggered for conditions that may indicate the need to change the fan tray. The system provides the following traps:
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The value normal(1) represents the normal operating speed of the fans. The value high(2) represents that the fans are running at a higher rate of speed.
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Remove the plastic bezel from the upper-front of the chassis by placing your fingers in the notches on the sides of the bezel and pulling it toward you.
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Grasp the two bezel mounts on the front of the fan tray and pull toward you. The fan tray should easily slide out of the chassis.
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WARNING: The upper fan tray assembly contains multiple fans that are spinning at a high rate of speed when the system is powered on. If system is powered on, do not touch moving fans. To minimize the risk of personal injury and potential damage to equipment, follow these instructions.1. Pull the fan tray towards you until the fan tray extends out of the chassis approximately two inches (5 cm).
2. Wait 30 seconds to allow fans to stop spinning.
3. Fully remove fan tray.
Die obere Lüfter Schublade enthaelt mehrere Lüfter.
Verletzungsgefahr bei Beruehrung der Lüfter. Hohe Umdrehungszahl der Lüfter unter Stromanschluss. Vorsicht nicht beruehren. Um persoenliche Verletzungen und Geraeteschaden zu verhueten bitte Anleitungen beachten.
1. Schublade ca. 5cm herausziehen.
2. 30 Sekunden warten bis die Luefter zum stehen kommen.
3. Schublade erst jetzt komplett herausziehen.
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Proceed to the Installing a Replacement Upper Fan Tray section that follows.
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Replace the plastic bezel by aligning it over the bezel mounts that protrude from the fan tray and snapping the bezel in place.
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Remove the plastic bezel from the lower-front of the chassis by placing your fingers in the notches on its sides and pulling it toward you.
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Use a #1 Phillips screwdriver to remove the fan tray cover by loosening the four screws securing it in place.
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Pull the fan tray toward you with the handle cut-out on the front of the fan tray assembly. The fan tray assembly should easily slide out of the chassis.
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WARNING: The lower fan tray assembly contains multiple fans that are spinning at a high rate of speed when the system is powered on. If system is powered on, do not touch moving fans. To minimize the risk of personal injury and potential damage to equipment, follow these instructions.1. Use the handle cut-out to pull the fan tray towards you until the fan tray extends out of the chassis approximately two inches (5 cm).
2. Wait 30 seconds to allow fans to stop spinning.
3. Fully remove fan tray.
To avoid personal injury and/or damage to the fan tray, be sure to support the fan tray’s weight from its front and back as you slide it completely out of the chassis.
Die untere Lüfter Schublade enthaelt mehrere Lüfter. Veletzungsgefahr bei Beruehrung der Lüfter. Hohe Umdrehungszahl der Lüfter unter Stromanschluss Vorsicht nicht beruehren.
Um persoenliche Verletzungen und Geraeteschaden zu verhueten bitte Anleitungen beachten.
1. Schublade ca 5cm herausziehen.
2. 30 Sekunden warten bis die Luefter zum stehen kommen.
3. Schublade erst jetzt komplett herausziehen.
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Proceed to the Installing a Replacement Lower Fan Tray Assembly section that follows.
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Hold the front of the fan tray by its handle with one hand and use your other hand to align it with the lower fan tray bay of the chassis. The lower fan tray bay is located at the bottom front of the chassis.
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Slowly slide the fan tray into the chassis along the guides until it is seated firmly in the chassis and can go no further.
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Verify that the particulate filter is securely in place. Its front should be flush with the front of the fan tray assembly and its tab should be lowered to keep it in place.
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IMPORTANT: |
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Replace the lower plastic bezel by aligning it over the bezel mounts that protrude from the fan tray bay cover and snapping the it in place.
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If the failed upper or lower fan tray is still under warranty, return it to the vendor for repair. Starent Network’s contact information is located in the About This Guide chapter of this document.
If the failed fan tray is out of warranty, contact the vendor to determine if it can be sent in for repair at an additional cost.
If you choose to discard the failed component, please return it to Starent Networks for proper disposal. Contact us at: recycle@starentnetworks.com to obtain return instructions. Starent Networks will pre-pay or reimburse shipping charges associated with this service.
