3Com 4005 Installation And Maintenance Manual

Also see for 4005: Key Information Guide Datasheet

Contents

3Com 4005 Installation And Maintenance Manual Manual pdf 38 page image

38 CHAPTER 6: SWITCH 4005 F AN TRAYSNormal Operation Two fan trays with a total of four functioning fans must be installed and operatingat all times. If one fan in a fan tray fails, replace the entire fan tray as soon aspossible.CAUTION: All four fans must be operational when the Switch 4005 is powered onto ensure proper cooling of the chassis.CAUTION: The Switch 4005 chassis will continue to run if one fan fails. However,replace the fan tray as soon as possible.See the Ventilation Requirements and Environmental Specifications in Chapter 3.All Switch 4005 chassis have two fan trays preinstalled at the manufacturingcenter. You do not need to install a fan tray until one of the original fan trays failsor is operating intermittently.Maintenance Ensure that the ambient environment for the Switch remains within thespecifications in Chapter 3. In addition, ensure that the immediate area around theSwitch 4005 is free from dust or small debris and that the module and fan ventsare unobstructed. There are no user-serviceable parts on a fan tray.If Failure Occurs If one or both of the fans in a fan tray fails or operates intermittently, remove andreinsert the fan tray as described in sections “Removing a Fan Tray” and “Installinga Fan Tray” in this chapter. If problems continue, remove the fan tray and replace itwith a new one. There are no user-serviceable parts in a fan tray. Do not attemptto fix it. Consult your purchase records so that you can determine if the incidentoccurred during the warranty period, and return the faulty fan tray to yoursupplier or to 3Com. The warranty terms are printed in the Switch 4005 KeyInformation Guide.Hot Swap You can remove or install a fan tray while the Switch is powered on. This activity iscalled hot swap.