Chamberlain MADCBB - Manual (Page 7)

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INSTALLATION »
ATTACH THE OPERATOR TO THE CONCRETE PAD
ATTACH THE OPERATOR TO THE
CONCRETE PAD
Position the operator on the concrete pad and mark the mounting
holes.
Install 1/2" x 6" wedge anchors in the location of the mounting
holes. The wedge anchors should be installed with approximately 1-1/4"
showing above the concrete pad in order to allow for the 1/2" thick base plate
as well as washers for leveling.
Attach the operator to the concrete pad with appropriate fasteners.
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1/2" x 6" 1/2" x 6"
(base plate)
(base plate)
PEDESTAL INSTALLATION TOWER INSTALLATION
(Barrier Arm) (Gate Arm Bracket)
(Operator)
INSTALL THE BARRIER ARM
Line up the holes in the barrier arm with the slotted holes in gate arm bracket.
Insert the bolts through the barrier arm and gate arm bracket.
Secure with the flat washers and nylon nuts (It is recommended to use ONLY
nylon nuts).
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