Delta Modulon Series User Manual page 15

(4) Use an 11/16" (17 mm) socket wrench and three M10 screws (originally used to fix
the rear balance support on the pallet) to install the rear balance support (removed
during the unpacking process) at the rear of the Battery Cabinet. Use the three
expansion screws and nuts (provided by service personnel) to fix the rear balance
support on the ground to avoid Battery Cabinet movement. Please see Figure 8.
Figure 8: balance support installation_ rear of the battery cabinet
WARNING:
Please stabilize the Battery Cabinet with the two provided balance
supports. Otherwise, the Battery Cabinet might topple over.
(5) Follow 4.6 Installation Procedures to install the battery modules.
(6) Follow 4.7 Function Contact to perform wiring procedures for connection to the UPS.
(7) After finishing the procedures above, close the Battery Cabinet's front door.
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