Transcript
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Replacement Fan Module for the Hotwire 8800 DSLAM Installation Instructions Document Number 8800-A2-GN12-10 May 1999
What is the Fan Module? The fan module is a dedicated cooling device installed in the Hotwire 8800 DSLAM chassis to provide cooling for the circuit cards. It consists of a custom plug-in tray of six fans, each with a tachometer lead. The fans draw air into the 8800 chassis from the front and sides, force it up through the card cage, and exhaust it out the upper rear of the unit. The total airflow provided is 660 cfm. The module is powered by – 48 Vdc which is derived from the backplane of the Hotwire 8800 DSLAM chassis. Maximum total power consumption is 38 watts. A control circuit is mounted on the module so that if a fan failure occurs, a signal is sent to the MCC and the amber Fan ALARM LED on the chassis is lighted. Tracks below the fan tray allow for an air filter to be added. The fan module, including the air filter if fitted with one, weighs 4.5 lbs. The entire module slides on tracks and can easily be removed and reinstalled.
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Removing the Existing Fan Module You will need a Phillips screwdriver to remove the cover plate.
" Procedure To remove the existing fan module: 1. Unscrew the four screws securing the fan module cover plate and remove the cover plate. 2. Using both hands, place your fingers inside the flange at the top of the fan tray to slide the fan module out of the unit about six inches. If you had installed the air filter, it will slide out with the fan module.
SLOTS
SLOTS
SLOTS
13-18
7-12
1-6
-48V
INPUT
LINES
-48V (A)
-48V (B)
RET (A)
RET (B)
FR GND
2
1
4
3
6
5
8
LAN/W AN SLOT 10 12
14
16
18
20
MGT SERIA
L
7
9 11 LAN/W AN SLOT
13
15
17
19
MGT 10BT
ALAR
M
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3. Grasp the fan tray at the sides and remove the module from the chassis.
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Installing a Replacement Fan Module You will need a Phillips screwdriver to install a replacement fan module.
" Procedure To install a replacement fan module: 1. Hold the replacement fan module by the sides and guide it onto the tracks under the card cage.
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2. Slide the fan module into the chassis until the front panel is flush with the sides of the chassis. 3. Press the front panel of the fan module so that it engages the connectors on the backplane. 4. Replace the cover plate and fasten with four screws.
Warranty, Sales, Service, and Training Information Contact your local sales representative, service representative, or distributor directly for any help needed. For additional information concerning warranty, sales, service, repair, installation, documentation, training, distributor locations, or Paradyne worldwide office locations, use one of the following methods: H
Internet: Visit the Paradyne World Wide Web site at www.paradyne.com. (Be sure to register your warranty there. Select Service & Support → Warranty Registration.)
H
Telephone: Call our automated system to receive current information by fax or to speak with a company representative. — Within the U.S.A., call 1-800-870-2221 — Outside the U.S.A., call 1-727-530-2340
Copyright E 1999 Paradyne Corporation
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*8800–A2–GN12–10*
