TA 900 Series (3rd Gen) HIG
Battery Backup Unit
61213908F1-34A
Copyright © 2020 ADTRAN, Inc.
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Wall Mounting the Total Access 916/924 BBU (1175044L1)
For a wallmount installation, the BBU installs on plywood (3/4-inch minimum) using four
#10 x 3/4-inch pan-head wood screws (provided with the BBU). Install the BBU as follows:
shows the BBU mounting dimensions for the Total Access 916/924.
Figure 8. Wall Mounting the 1175044L1 BBU
Instructions for Wall Mounting the 1175044L1/L2 BBU
Step
Action
1
Determine the preferred unit layout to ensure cable plugs reach their designated sockets.
2
Ensuring a plumb measurement, mark where the pilot holes are to be drilled according to the
dimensions given in the documentation included with your shipment.
3
Drill all four pilot holes using a size 1/16-inch drill bit.
4
Screw in the top two pan-head screws that fit the keyhole openings. Let the head of each
screw protrude 1/16 inch from the plywood to engage the keyhole slot.
Do not let the weight of the BBU rest on the two keyhole screws. Maintain support
until the lower two screws are fully inserted.
5
Lift the BBU with an assistant and position to engage the screw heads. Allow the unit to slide
down until the slot end rests against the screws.
6
Insert the two lower screws through the tabs and tighten securely.
7
Use cable ties as appropriate. The battery connection from the BBU should be directly
connected to the
BBU
port on the rear of the chassis.
