Chamberlain ATS, Owner'S Manual

Page: 11 / 72

11
INSTALLATION STEP 5
Hang the Opener
Two representative installations are shown. Yours may be
different. Hanging brackets should be angled (Figure 1)
to provide rigid support. On fi nished ceilings (Figure 2),
attach a sturdy metal bracket to structural supports before
installing the opener. This bracket and fastening hardware
are not provided.
1. Measure the distance from each side of the motor unit
to the structural support.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with
5/16"-18x1-7/8" lag screws.
5. Fasten the opener to the hanging brackets with
5/16"-18x7/8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the door
(or in line with the header bracket if the bracket is not
centered above the door).
7. Remove the 2x4. Operate the door manually. If the
door hits the rail, raise the header bracket.
Figure 1
Figure 2
To avoid possible SERIOUS INJURY from a falling
garage door opener, fasten it SECURELY to structural
supports of the garage. Concrete anchors MUST be
used if installing ANY brackets into masonry.
HARDWARE SHOWN ACTUAL SIZE
Lag Screw 5/16"-18x1-7/8"
Hex Bolt
5/16"-18x7/8"
Lock Washer
5/16" Nut
5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Hidden Support
Bracket
(Not Provided)
Measure
Distance
- FINISHED CEILING -
Lag Screws
5/16"-18x1-7/8"
Structural
Supports
Lag Screws
5/16"-18x1-7/8"
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18