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Cisco ONS 15300 Series

Installing the Fan-Tray Assembly in the Cisco ONS 15310-MA

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Installing the Fan-Tray Assembly in the Cisco ONS 15310-MA

Table Of Contents

Installing the Fan-Tray Assembly in the
Cisco ONS 15310-MA

Fan-Tray Assembly Description

Fan Speed and Power Requirements

Fan Failure

Air Filter

Fan-Tray Assembly Specifications

Install the Fan-Tray Assembly

Related Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines


Installing the Fan-Tray Assembly in the
Cisco ONS 15310-MA


Product Name: 15310-MA-FTA

This document explains how to install the fan-tray assembly in the Cisco ONS 15310-MA. It also contains a description of the fan-tray assembly, installation equipment and procedures, and a list of specifications. As appropriate, use this document in conjunction with the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide, the Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual, and the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide when working with the fan-tray assembly.

This document contains the following sections:

Fan-Tray Assembly Description

Fan-Tray Assembly Specifications

Install the Fan-Tray Assembly

Related Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines

Fan-Tray Assembly Description

The fan-tray assembly is located at the top of the ONS 15310-MA shelf assembly, under the air filter, rear exhaust, and air inlet. The fan tray is a removable drawer that holds four fans and the fan-control circuitry for the ONS 15310-MA. After you install the fan tray, you should only need to access it if a fan failure occurs.

The front of the fan-tray assembly has CRIT, MAJ, and MIN alarm LEDs that indicate that there are Critical, Major, and Minor alarm present on the ONS 15310-MA assembly.

Figure 1 shows the location of the fan tray.

Figure 1 Installing the Fan-Tray Assembly

Fan Speed and Power Requirements

Fan speed is controlled by CTX2500 card temperature sensors. The sensors measure the input air temperature at the fan-tray assembly.

Fan Failure

If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual fans. The red Fan Fail LED on the front of the fan tray illuminates when one or more fans fail. For fan tray replacement instructions, refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide. The red Fan Fail LED is unlit after you install a working fan tray.

Air Filter

The ONS 15310-MA uses a reusable air filter; Model 15310-MA-FTF, that is installed above the fan-tray assembly. The reusable filter is made of a gray, open-cell, polyurethane foam that is specially coated to provide fire and fungi resistance. Spare filters should be kept in stock.


Caution Do not operate an ONS 15310-MA without the mandatory fan-tray air filter.

Fan-Tray Assembly Specifications

Environmental

Operating temperature: -40 to +65 degrees Celsius (-40 to 149 degrees Fahrenheit)

Operating humidity: 5 to 90%, noncondensing

Power

50 W, 4.2 Amps (at 12 V), 170 BTU/hr

Shelf Acoustics (NEBS acoustic noise compliant)

Normal fan speed: 58 dBA

High fan speed: 64 dBA

Install the Fan-Tray Assembly

The following parts are needed to install the fan-tray assembly.

#2 Phillips screwdriver

Fan-tray assembly

Fan filter


Caution Do not force a fan-tray assembly into place. Doing so can damage the connectors on the fan tray and/or the connectors on the back panel of the shelf assembly.


Step 1 Install the air filter. The air filter is installed internally in the slot at the top left of the shelf assembly (Figure 2). Pull the tab, located at the center of the front of the fan filter, toward you. Make sure the tab is facing up before you install the fan filter.

Step 2 Slide the air filter into the bracket, and push the tab closed.

Figure 2 Installing the Fan-Tray Air Filter

Step 3 Pull the fan tray ejector all the way out.

Step 4 Use the ejector to slide the fan tray into the shelf assembly until the electrical plug at the rear of the tray plugs into the corresponding receptacle on the backplane (Figure 1).

Step 5 Close the ejector.

Step 6 Use a Phillips screwdriver to tighten the screws at either end of the fan-tray assembly.

Step 7 To verify that the tray has plugged into the backplane, look at the fan tray and listen to determine that the fans are running.


Related Documentation

Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide

Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

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