4. Install the hanging bracket. Position the hanging bracket on the track as closer to the
opener as possible, if there is enough space. Note, some angle are needed to place
the hanging bracket on the track. By rotating the hanging bracket for about 30°(this
requires to apply certain force), it can be fixed on the track sturdy. Then determine
mounting points on both of the iron angle A, where the distance between the measure
the distance between the mounting points and ceiling enable the track to be horizontal
when hanging. Then mount the hanging bracket at mounting points by two pairs of M4
screws and M4 nuts. Still, the whole assembly should be rotatable vertically, where the
Notice: Ensure the track is horizontal and vertical to the shaft. Ensure the connection
between iron angle A and ceiling is firm enough.
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