Dell UPS 4200R - Manual (Page 12)

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Installation and Startup
Rackmount Setup
CAUTION: The cabinet is heavy (66 kg/145.5 lb): 1) Dell strongly recommends to remove the battery tray from
the UPS before lifting. 2) Lifting the cabinets into the rack requires a minimum of two people.
CAUTION: Removing the batteries should be performed or supervised by personnel knowledgeable about
batteries and the required precautions. Keep unauthorized personnel away from batteries.
Removing the Battery Retaining Bracket
1 Loosen the thumbscrew on the battery retaining bracket and remove.