Dell PowerEdge PDU Managed LED Installation Manual

Also see for PowerEdge 4220: Installation guide Manual Manual Manual Manual

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Dell PowerEdge PDU Managed LED Installation Manual Manual pdf 31 page image

Installation Guide 29Securing the Rack Leveling FeetWARNING: Read all statements below before you adjust the leveling feet.• The Energy Smart rack must be positioned above the perforated tiles.• Your rack includes four leveling feet, which are mounted near the cornersof the rack frame.• The leveling feet are designed to align the rack in an upright, level positionwhen the rack is placed on a slightly uneven floor surface.• Before you install your systems in the rack, adjust the leveling feet.• Adjust the leveling feet after the rack is properly placed and the brushessurround the perforated area.WARNING: When you adjust the leveling feet, ensure that the casters on eachcorner of the rack do not rise more than 5.0 mm (3/16") above the floor. If youexceed 5.0 mm of clearance between the floor and the casters, slowly retract theleveling feet, and then move the rack to another location that requires minimaladjustments to the leveling feet.WARNING: Adjust the leveling feet until each leveling foot rests firmly on thefloor. Proper contact with the floor ensures that each leveling foot is supportingthe weight of the rack and prevents the rack from swaying in any direction. If theleveling feet are not all in firm contact with the floor, the rack can becomeunstable and tip over.WARNING: Do not attempt to move your rack with the leveling feet deployed.Always retract the leveling feet before moving the rack. Having the leveling feetdeployed when you move the rack may cause the rack to tip over.WARNING: Always level the rack and install the stabilizer feet before you installyour systems. A fully loaded rack may tip over if your rack is not resting on an evenfloor surface and the leveling and stabilizer feet are not supporting the weight ofthe rack.NOTE: If the rack is not leveled properly, you may not be able to install the stabilizerfeet, which are necessary to prevent the rack from tipping over.NOTE: Ensure that all brushes are installed to maintain cooling efficiency.1 Using a screwdriver, lower the leveling foot until it rests on the floor.2 To lower the foot further, tighten the hex nut clockwise with a 12 mmwrench. See Figure 16.3 Repeat step 1 and step 2 for the remaining leveling feet.4 Ensure that the rack is level.