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Product Number: MAS-UBR7200-FAN=, MAS-UBR7223-FAN=
This document explains how to remove and replace the fan tray in the Cisco uBR7200 series universal broadband routers (which consist of the Cisco uBR7246 VXR, Cisco uBR7246, and the Cisco uBR7223). It includes instructions for removing the fan tray from the chassis and installing a new fan tray in the chassis.
This document includes the following sections:
The Cisco IOS software running on your router contains extensive features and functionality. The effective use of many of these features is easier if you have more information at hand. For additional information on configuring and maintaining a Cisco uBR7200 series router, the following documentation resources are available:
The Cisco uBR7246 VXR and Cisco uBR7246 fan tray, shown in Figure 1, consists of seven fans enclosed in a metal tray. The Cisco uBR7223, shown in Figure 2, consists of 4 fans enclosed in a metal tray.
The fan tray is located in the chassis on the left side of the Cisco uBR7200 series when viewing the routers from the front. (See Figure 1.) The fan tray receives DC-input power through a power connector that connects to the router midplane.
The fan tray draws cooling air in through the intake vent on the right side of the chassis (when viewing the router from the front [the port adapter and cable modem card end]), and moves the air across the internal components and out the exhaust vent on the left side of the chassis. Figure 3 shows the air flow through the Cisco uBR7200 series routers.
The right and left sides of the router must remain unobstructed to ensure adequate airflow and to prevent overheating inside the router. Maintain at least 3 inches of clearance on both sides of the router.
Following are safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring.
 | Warning
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. |
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.
Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física.
Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Follow these basic guidelines when working with any electrical equipment:
Removing and replacing the fan tray in a Cisco uBR7200 series router involves the following tasks:
These tasks are described in detail in the following subsections.
Step 1 Using a no. 2 Phillips screwdriver or your fingers, loosen the captive installation screw that secures the fan tray to the chassis. (For a Cisco uBR7246 VXR or Cisco uBR7246, see Figure 4. For a Cisco uBR7223, see Figure 5.)
Step 2 Grasp the fan tray handle (or handles) with one hand and the outside of the chassis with the other hand.
 | Caution The fans are exposed on the left side of the fan tray. Keep your fingers, clothing, and jewelry away from the fans. Always handle the fan tray by the handle (or handles). |
Step 3 Pull the fan tray backward toward you to disengage it from the power receptacle on the midplane. (For the Cisco uBR7246 VXR or Cisco uBR7246, see Figure 6. For the Cisco uBR7223, see Figure 7.)
This completes the steps for removing the fan tray from the chassis.
Proceed to the following section, "Installing a New Fan Tray in the Chassis."
Step 1 For a Cisco uBR7246 VXR or Cisco uBR7246, orient the fan tray so the fans face the outside of the chassis and the fan tray handle is at the top of the fan tray front panel. (See Figure 6.)
For a Cisco uBR7223, orient the fan try so the fans face the outside of the chassis and the captive installation screw is at the top of the fan tray front panel. (See Figure 5.)
Step 2 Guide the fan tray into the chassis making sure the DC-power connector on the fan tray is aligned with the receptacle on the midplane.
| Caution The fans are exposed on the left side of the fan tray. Keep your fingers, clothing, and jewelry away from the fans. Always handle the fan tray by the handle. |
Step 3 Secure the fan tray to the chassis using the attached captive installation screw. (For the Cisco uBR7246, see Figure 4. For the Cisco uBR7223, see Figure 5.)
This completes the procedure for removing or replacing the fan tray in a Cisco uBR7200 series router.
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Posted: Tue Mar 7 12:34:50 PST 2000
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