3Com 4924 Getting Started Guide - Page 23
Rack-mounting, WARNING, CAUTION
UPC - 662705400631
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Rack-mounting 23 ■ The air is as free from dust as possible. ■ The unit is installed in a clean, air conditioned environment. ■ No more than four Switch units are placed on top of one another, if the units are free-standing. ■ The Switch is situated away from sources of conductive (electrical) dust, for example laser printers. ■ The AC supply used by the Switch is separate to that used by units that generate high levels of AC noise, for example air conditioning units and laser printers. Rack-mounting The Switch is 1.5U and will fit in most standard 19-inch racks. However, as each Switch requires a shelf or runner to support its weight, you may need to allow a 2U space within the rack for each Switch. WARNING: The Switch should only be used in a rack if it is mounted on runners, a shelf, or a tray to support the weight. The rack-mount kits alone are not sufficient to support the weight of the switch. The rackmount kits must not be used to suspend the Switch from under a table or desk, or attach it to a wall. CAUTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted. CAUTION: You must use a shelf or support that will not obstruct the air flow through the side panels of the Switch. To rack-mount your Switch: 1 Place the Switch the right way up on a hard flat surface, with the front facing towards you. 2 Locate a securing bracket over the mounting holes on one side of the Switch, as shown in Figure 9. 3 Insert the three screws and tighten with a suitable screwdriver.