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Product Number: DS58-FAN=
The Cisco AS5800 Universal Access Server is equipped with a blower assembly, which is designed to monitor system internal operating temperatures and maintain acceptable cooling parameters.
This document explains how to remove and replace the blower assembly. Also included are instructions for verification and troubleshooting.
The following sections are included in this document:
For information regarding the Cisco AS5800 Universal Access Server that is beyond the scope of this document or for additional information, use the following resources:
The Cisco AS5800 Universal Access Server is a high-density, ISDN and modem WAN aggregation system that provides both digital and analog call termination. It is intended to be used in service provider dial point-of-presence (POP), or centralized enterprise dial environments. The Cisco AS5800 Universal Access Server chassis components include a Cisco 5814 dial shelf and a Cisco 7206 router shelf. An optional AC power shelf is also available.
The dial shelf and router shelf are bundled, and can be ordered to support either AC or DC power. Included in the dial shelf is a blower assembly, filter module, and power entry modules (PEMs). Also included in the bundled system are ingress trunk cards, modem cards, dial shelf controller cards, Flash memory PCMCIA cards, cables, and Cisco IOS software. The dial shelf feature cards and host router shelf communicate via a dial shelf interconnect cable.
Figure 1 shows a front view of a fully configured Cisco AS5800 Universal Access Server, and Figure 2 shows a rear view.
The blower assembly in the Cisco 5814 dial shelf, monitors the dial shelf internal operating temperatures and maintains acceptable cooling parameters. The blower assembly contains three variable-speed impeller fans and a controller card that performs the following functions:
The blower assembly is located directly above the feature cards and dial shelf controller cards in the dial shelf. You install the blower assembly into the front of the dial shelf chassis where it plugs directly into the dial shelf backplane. Figure 3 shows the location of the blower assembly in a fully configured Cisco 5814 dial shelf, as viewed from the system front.
Two LEDs--Power and Fault--are mounted on the blower assembly front panel (see Figure 4) and function as follows:
Table 1 lists blower assembly DC power requirements.
| Power | Specification |
|---|---|
Voltage to backplane | |
|
-38 VDC |
Current | |
|
3.0A |
Table 2 lists the blower assembly environmental specifications, which are designed to meet NEC, NEBS, and ETSI requirements.
| Specification | Description |
|---|---|
| Cooling | Maximum inlet air temperature is 131° F (55° C) |
| Audible noise | Maximum acoustic noise level is 60 dBa |
Temperature | |
|
23° F to 131° F (-5° C to 55° C) |
Humidity | |
|
10% to 90%, noncondensing |
Altitude | |
|
9,843 ft (3,000 meters) at 104° F (40° C) |
Thermal shock | |
|
23° F to 113° F at 32.9° F (-5° C to 45° C at 0.5° C) per minute |
Vibration | |
|
1.12 Grms from 3 to 500 Hz |
| Regulatory compliance | ENG-5769 UL 1950 CSA 22.2-950-936 EN 60 950 BABT AUSTEL IEC-801 Bellcore NEBS TR-NWT-000063 Bellcore NEBS TR-NWT-001089 |
The following safety guidelines are recommended when working with any equipment that connects to electrical power or telephone wiring:
The following guidelines are recommended when working with any equipment that is connected to telephone wiring or to other network cabling:
Electrostatic discharge (ESD) damages equipment and impairs electrical circuitry. ESD occurs when printed circuit boards are improperly handled, and results in complete or intermittent failures.
The system feature cards and dial shelf controller cards consist of a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the carrier. Handle the system line cards by their carrier edges and handle only; never touch the printed circuit board components or connector pins.
Although the metal carrier helps to protect the printed circuit boards from ESD, wear a preventive antistatic strap whenever handling the dial shelf feature cards or dial shelf controller cards, or the router shelf network processing engine, I/O controller, or port adapters. Ensure that the strap makes good skin contact and connect the strap's clip to an unpainted chassis surface to safely channel unwanted ESD voltages to ground.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
The following guidelines are recommended to prevent ESD damage:
 | Caution Periodically check the resistance value of the antistatic strap. The measurement should be within the range of 1 and 10 megohms. |
 | Warning When installing the unit, the ground connection must always be made first and disconnected last. |
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.
| | 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.
This section lists tools and parts you need, and explains how to remove and replace the blower assembly in the dial shelf chassis.
You need the following parts and tools to remove and replace the blower assembly. If you need additional equipment, contact a service representative for ordering information.
If your Cisco AS5800 Universal Access Server is installed in a standard 19-inch, 4-post or standard telco rack, cables from other equipment in the rack might obstruct access to the system rear. The rack power strips or other permanent fixtures might also cause obstruction.
Use the following guidelines to ensure easy system access when the system is installed in a rack:
| | Caution The system will shut down two minutes after the system temperature threshold has been reached. Although normal blower assembly replacement is estimated not to exceed 30 seconds, if you expect the replacement process to exceed one minute, we recommend that you shut down the system prior to the removal and replacement process. |
| | Caution The blower assembly weighs 27.5 lb (12.5 kg). Use two hands when removing or replacing the blower assembly. |
To remove the blower assembly, complete the following steps:
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Step 2 Loosen the two captive screws on the blower assembly front panel. (See Figure 5.)
Step 3 Grasp the blower assembly handle with one hand and pull the blower assembly straight toward you about half way out of the slot.
Step 4 Place your other hand under the blower assembly as it extends from the dial shelf chassis to support the blower and prevent it from falling.
Step 5 Slowly pull the blower assembly all the way out of the slot and place it on an antistatic mat or in packaging to return it to the factory.
This completes the blower assembly removal process. Proceed to the section "Replacing the Blower Assembly."
To replace the blower assembly in the dial shelf, complete the following steps. Refer to Figure 5 to orient yourself with the dial shelf chassis and the blower assembly. When you are finished, use a Site Log sheet to record service maintenance.
| | Caution The blower assembly weighs 27.5 lb (12.5 kg). Use two hands when removing or replacing the blower assembly. |
Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Step 2 Place one hand on the blower assembly handle and place your other hand under the blower assembly to support the weight.
Step 3 Position the blower assembly in the opening and slide it fully into the chassis until the backplane connectors mate.
Step 4 Using a 1/4-inch flat-blade screwdriver, tighten the two captive screws on the blower assembly front panel.
Step 5 Note service maintenance on your Site Log sheet.
This completes the blower assembly installation procedure. Proceed to the section "Verifying and Troubleshooting the Installation" to verify your installation.
To verify that the blower assembly is properly installed and operational, complete the following steps:
Step 1 Listen to verify the fans are operative. In noisy environments, you might want to place your hand to the rear of the blower assembly and feel for air flow from the exhaust vent.
Step 2 Verify the green power LED on the blower assembly front panel lights.
If the power LED remains off, verify the blower assembly is fully installed in the dial shelf and the connector is firmly connected to the backplane; verify the captive screws are adequately tightened.
Step 3 Verify the yellow fault LED on the blower assembly front panel remains off.
If the fault LED lights, the newly installed blower assembly might be faulty, or the chassis connector might be damaged. Shut off system power; remove the blower assembly from the dial shelf, and check the connectors. If the connectors are in good condition, reinstall the blower assembly in the dial shelf and power ON the system.
If the fault LED is still on, assume the blower assembly is faulty. Install another blower assembly and return the faulty blower assembly to the factory.
This completes troubleshooting the blower assembly. If you have any questions or need assistance, proceed to the section "Cisco Connection Online."
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional content and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously--a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
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