Paradyne 8820-S2-900 - Manual
Paradyne 8820-S2-900 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Removing the Existing Fan Tray Assembly; Procedure; Remove three screws from the; Loosen Screws
- Page 3 – Ground Wire
- Page 4 – Installing a Replacement Fan Tray Assembly; To install a replacement fan tray:; inserts stay aligned with the holes in the fan tray.
- Page 5 – plate to the chassis.; Copyright
1
8820-A2-GZ44-10
June 2004
Replacement Fan Tray Assembly for the
8820 Broadband Access Concentrator
Model 8820-S2-900
Installation Instructions
Document Number 8820-A2-GZ44-10
June 2004
What is the Fan Tray Assembly?
The fan tray assembly is a dedicated cooling device installed in the chassis of the
8820 Broadband Access Concentrator (BAC) to provide forced-air cooling of the
chassis. The fans, located at the top of the BAC chassis, draw cooling air
upwards from the bottom of the chassis, through the circuit cards or card cage,
forcing the air out the opening, located at the top rear of the chassis.
The fan tray assembly consists of six fans, a metal bracket, and a printed wiring
board (PWB) with a press-fit connector and five status LEDs. Each fan provides a
sense wire that indicates the status of the fan. The sense wires are connected to
the backplane via the fan tray’s PWB and its connector.
The rated airflow is 900 cfm (based on 6 fans at 150 cfm each) at zero back
pressure.
The fan tray is powered by 48 VDC from the backplane of the 8820 BAC.
Nominal power consumption is less than 100 watts, depending upon the
manufacturer.
An LED is on the fan tray so that if a fan failure occurs, a signal is sent to the
SCP card or MCP card and the yellow Fan ALARM LED on the chassis lights.
Removal of the fan tray also causes the SCP card or MCP card to sense an
alarm.
The fan tray assembly weighs 10 lbs (22 kg). It is secured in place by two
fan-locking brackets located on the right and left front of the assembly.
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Summary
00-16792 ALARMS Major Minor Fan B A POWER SERIAL SMCM CLOCK A ALARM 2 4 6 8 10 12 14 16 18 1 3 5 7 9 11 13 15 17 LAN/WAN SLOT B CLOCK B A SERIAL MCC AC ALARM 48V R T N 48V NEG POWER ENTRY MODULE LEFT UNIT: LINE A RIGHT UNIT: LINE B WARNING! POWER MUST BE DISCONN ECTED AT THE SOURCE BEFORE REMOVING O...
3 8820-A2-GZ44-10 June 2004 ! ATTENTION: UN RISQUE MÉCANIQUE EXISTE EN RAISON DE LA ROTATION DESPALES DU VENTILATEUR. GARDER LES MAINS ET LES DOIGTS LOINDES PALES DU VENTILATEUR PENDANT LE DEMONTAGE DU CACHEDU VENTILATEUR. UTILISER UNIQUEMENT LES ZONES INDIQUÉES DETRACTION POUR DÉMONTER LE CACHE DU ...
4 8820-A2-GZ44-10 June 2004 Installing a Replacement Fan Tray Assembly You will need a Phillips screwdriver to install a replacement fan tray. " Procedure To install a replacement fan tray: 1. Hold the replacement fan tray horizontally and guide its tabs into the two card guides located inside t...
