3Com Baseline 2226-PWR Plus User Manual

Also see for 3C16475BS: Datasheet

Contents

16 CHAPTER 2: I NSTALLING THE SWITCH■ It is accessible and cables can be connected easily.■ Cabling is away from sources of electrical noise.These include lift shafts, microwave ovens, and airconditioning units. Electromagnetic fields caninterfere with the signals on copper cabling andintroduce errors, therefore slowing down your net-work.■ Water or moisture cannot enter the case of theunit.■ Airflow around the unit and through the vents inthe side of the case is not restricted (3Com recom-mends that you provide a minimum of 25 mm or 1in. clearance).■ The air is as free of dust as possible.■ Temperature operating limits are not likely to beexceeded. It is recommended that the unit beinstalled in a clean, air-conditioned environment.It is always good practice to wear an anti-static wriststrap when installing network equipment, connectedto a ground point. If one is not available, try to keepin contact with a grounded rack and avoid touchingthe unit's ports and connectors, if possible. Static dis-charge can cause reliability problems in your equip-ment.Rack-Mounting or Free-StandingThe unit can be mounted in a 19-inch equipment rackusing the supplied mounting kit, (see “Using theMounting Kit” on page 16), or it can be free-stand-ing. Do not place objects on top of the unit or stack.CAUTION: If installing the Switch in a free-standingstack of different size Baseline or SuperStack® 3 units,the smaller units must be installed above the largerones. Do not have a free-standing stack of more thansix units.Using the Mounting KitThe Switch is supplied with two mounting bracketsand four screws. These are used for rack mountingthe unit. When mounting the unit, take note of theguidelines given in “Positioning the Switch” onpage 15.The Switch is 1U (1.75 in.) high and will fit in a stan-dard 19-inch rack.CAUTION: Before continuing, disconnect all cablesfrom the unit. Remove the self-adhesive pads fromthe underside of unit, if already fitted.To rack-mount the Switch:1 Place the unit the right way up on a hard, flat surfacewith the front facing towards you.2 Locate a mounting bracket over the mounting holeson one side of the unit.3 Insert the two screws supplied in the mounting kitand fully tighten with a suitable screwdriver.