Eci Telecom Ribbon SBC 7000 User manual

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SBC 7000 Fan Assembly
In this section:
Parts and Tools Required
Replacing the Fan Assembly
CRU Storage
The Fan Assembly, a Customer Replaceable Unit (CRU), available behind the front bezel. There are four assemblies and
each assembly contains a pair of fans, as shown in figure below. The Fan Assembly product code isFan Assembly SBC-
.7000-FANTRAY
Figure 1: Fan Assembly
The Fan Assemblies are hot-swappable that is, a Fan Assembly may be replaced without powering down the SBC 7000 platform.
Parts and Tools Required
The following items are needed to replace a fan assembly:
Electrostatic discharge (ESD) strap
The Replacement Fan Assembly
Torque driver with a #2 Phillips bit.
To prevent damage from electrostatic discharge, an ESD strap is provided in the SBC chassis accessory kit.
Refer to to install it.Connecting Electrostatic Discharge Wrist Strap on SBC 7000
Replacing the Fan Assembly
Perform the following steps to replace the Fan Assembly:
Remove the front bezel from the chassis (see for procedure).SBC 7000 Series Bezel
Attach an Electrostatic Discharge wrist strap to the ESD grounding point on the front panel of the chassis, and place the other end
around your wrist (see for details).Connecting Electrostatic Discharge Wrist Strap on SBC 7000
Identify the faulty Fan Assembly by checking the Fan Assembly LED. Fan faults are indicated by turned off LED, or amber LED. The LED
is at the right hand bottom of that respective Fan Assembly.
Unscrew the captive fastener on the Fan Assembly using torque driver with a #2 Phillips bit (as shown in the figure).
Using two handles at the top and the bottom, pull the Fan Assembly from the system.

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Figure 2: Removing the Fan Assembly
Whenever a Fan Assembly is nonfunctional or removed, the speed of the three remaining Fan Assemblies increases to
compensate for the missing fan.
Insert the new Fan Assembly to the same position.
Tighten the captive fastener to 6 in-lb using the torque driver.
Verify that the Fan Status LED is green. The LED is at the right hand bottom of the Fan Assembly.
Figure 3: Fan Assembly status indicator
Remove the ESD wrist strap from the chassis.
Reinstall the front panel bezel.
From the application, verify that the Fan Failure alarms are not generated.
Verify that the fan failure LED on the front panel is .OFF
CRU Storage

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All SBC 7000 CRUs are shipped in electrostatic discharge bags and must be handled by using appropriate ESD
precautions.
The storage environment for these CRUs are:
Humidity must be less than 95% (non-condensing).
Temperature must be between -40C and +70C.
The ESD Susceptibility symbol warns of the presence of Ribbon devices susceptible to electrostatic discharge. Do not
handle equipment without wearing a properly grounded ESD wrist strap.

Confidential and Proprietary. Copyright © 2020-2021 Ribbon Communications Operating Company, Inc. (''Ribbon''). © 2020-2021 ECI Telecom Ltd. Page 4