Chamberlain MIRACLE-ONE Owner's Manual page 14

M O U N T I N G O P E R A T O R ( C O N T I N U E D )
Bolt
Bushing
Back Bracket
Nut
Position the Miracle-One™ horizontally level on the closed gate,
where desired. For strength purposes, the front steel bracket must be
attached in an area that can withstand heavy forces. Additional
reinforcement steel plates may be necessary for mounting.
With the operator removed, completely weld around the brackets and plates on the gate.
2.25" vertical height between front and back brackets.
The gate must be in the closed position. Make sure the operator is
kept level while tack welding the front and back brackets and
reinforcement steel plates in position. After all tack welding is finished,
remove the operator to avoid damaging it!
NOTE: Front and back
bracket hardware must be
installed as shown. Nuts
must be tight or operator
will not work correctly.
Washer on top of bracket.
12
Traveler Carriage
Front Bracket
Nut