3Com Router 6000 FamilyInstallation ManualChapter 8Installing B68 Cabinets3Com Corporation8-23III. Installing and fixing racksAs shown in Figure 8-26, follow these steps to install and fix a rack:1) Clean the floor and rack surface.2) Align the rack installation holes with the corresponding expansion bolts and fixthe rack on the floor with bolts, spring washers and big flat washers.3) Torque the bolts to 45 Nm. Note to do that diagonally to reduce stress betweenthe bolts and the rack and facilitate rack adjustment during installation.Repeat these steps to install other racks.1) M12×60 bolt 2) Φ12 spring washer3) Φ12 big flat washer 4) Expansion tube5) Expansion nut 6) Height-retaining bolt (both sides)7) Retaining bolt (middle) 8) Height silkscreen of antistatic floorFigure 8-26 Fix a rack onto the floorCaution:When fixing a rack, fasten the retaining bolt in the middle first and then those at thetwo sides.8.3.6 Installing Slide RailsI. Installing T-shape nutsBefore installing a pair of rails, put T-shape nuts into their downside troughs, four for each rail.Two of these nuts are used for fixing the rail, and another two are for fixing the floor palletassemblies. This must be done before installing rails; after that, you are unable to install thenuts.
