3Com 5017C-LS Site Selection Considerations, Location Requirements, Ventilation

Page 34

Site Selection Considerations

The concentrator can be placed almost anywhere within your company, including offices and computer rooms. In general, we recommend installation in a wiring closet. The unit has been designed for rack mounting and comes with all the necessary hardware.

Location Requirements

The area where you install the ONline System Concentrator must meet the following conditions:

Temperature between 0° to 50° C (32° to 122° F)

Relative humidity less than 95%, non-condensing

AC power source within 6 feet (2 meters). Note that for installation to have true backup power, two independent AC power sources are required

The table or rack where the unit is installed should be level and not in direct sunlight or in an excessively dusty location

Ventilation

The concentrator fan units draw air in through the front and bottom of the chassis and exhausts air out the back. Make sure there are at least 6 inches (15 centimeters) between the fan vents at the back of the unit and the nearest surface to allow adequate airflow for cooling. This minimum distance is also required for access to the rear of the unit for maintenance.

The cable tray that comes standard with the concentrator helps prevent a tangle of cables at the front of the concentrator and also permits the required airflow to the unit. Make sure the cable tray is installed below the unit correctly before installing the concentrator.

2 - 4 ONline 17-Slot System Concentrator Installation and Operation Guide

Image 34
Contents Document Number Printed March VDE Class B Compliance Restricted Rights Page Contents Maintenance Appendix B Slot Usage Chart Appendix C Technical Support Page Figures Page Tables Page How to Use This Guide AudienceStructure of This Guide This guide contains the following chaptersDocument Conventions Convention Indicates ExampleRelated Documents 3Com Documents Reference DocumentsPage Introduction Introducing the ONline System ConcentratorMultiple 17-Slot Concentrator Environment Back Panel Front PanelONline System Concentrator Features ONline System Concentrator Front ViewModular ONline Configuration Modular DesignPort-Switching Technology TriChannel ArchitectureONline System Concentrator Using Multiple Networks Backup Power Supply Fault-Tolerance CapabilitiesLoad Sharing Backup Controller Module Redundant Cable LinksBackup Concentrator Redundant Cable Link ConfigurationBackup Concentrator Configuration Hot Swapping of Media ModulesSynchronous Backplane Installation and Troubleshooting Contents of the Shipping BoxONline System Concentrator Shipping Box Contents FCC Regulations Location Requirements Site Selection ConsiderationsVentilation Power Requirements Rack Mount Installation RequirementsInstallation Table Top Installation RequirementsInstalling the Cable Tray Rack Mount Settings Cable Tray Rack MountingRack Mount Positions Cable Tray Installation in Rack Cable Tray Table MountingInstalling the ONline System Concentrator Rack Mounting the ONline System ConcentratorAttaching the Rack Mount Flanges Table Top Mounting the ONline Concentrator Chassis Mounted in RackInstalling the Backup Power Supply Optional Removing Fan UnitUnplugging the Fan Unit Power Supply Connectors Selecting the Power Supply Voltage 10. Installed Backup Power Supply11. Setting the Voltage Selector Switch Installing ONline Modules Connecting Network CablesPower Up and Verification 12. Network Cable ConnectionsPower Supply Operation Verification Fan Operation VerificationTroubleshooting with Controller Module LEDs Command. If this fails to See Primary Power LED Technical Assistance Where To Go From Here Configuration of your concentratorMaintenance Routine Maintenance Replacing the Power SupplyRemoving the Power Supply Unplugging the Power Supply Power Supply Plugs in ONline System Concentrator Backup Power Supply Installed Replacing the Fan Unit Removing the Fan UnitUnplugging the Fan Unit ONline Module Maintenance Other System ComponentsPage General EnvironmentalMechanical Power SourceRegulatory Compliance Accessories Page Slot Usage Chart Table B-1. Concentrator Slot Usage Chart Table B-1. Concentrator Slot Usage Chart Page Technical Support On-line Technical SupportEmail Technical Support Support from Your Network SupplierWorld Wide Web Site Support from 3Com Accessing the 3Com MIB Returning Products for Repair3Com Technical Publications Page Index Index