Chamberlain 8355 - Hang the Garage Door Opener

10
5 Hang the garage door opener
To avoid possible SERIOUS INJURY from a falling
garage door opener, fasten it SECURELY to
structural supportsof the garage. Concrete anchors
MUST be used if installing ANY brackets into
masonry.
HARDWARE
Hex Bolt 5/16"- 18x7/8"
Nut 5/16"-18
Lock Washer
5/16"
Installation
Hanging your garage door opener will varydepending on your
garage. Two representative installations are shown.Yours may
be different.Hanging brackets should be angled (Figure 1) to
provide rigid support. On finished ceilings(Figure 2),attach a
sturdy metal bracket to structural supports before installing the
opener. Thisbracketand fastening hardware are not provided.
Instructions below are for attaching the garage door opener
directlyto structural supports.
5.1 Measure the distance from each side of the motor unitto
the structural support.
5.2 Cutboth pieces of the hanging bracketto required lengths.
5.3 Drill 3/16" pilotholes in the structural supports.
5.4 Attach one end of each bracketto a support with 5/16"-
18x1-7/8" lag screws (not provided).
5.5 Fasten the opener to the hanging brackets with 5/16"-
18x7/8" hex bolts,lock washersand nuts.
5.6 Checkto make sure the rail is centered over the door (or in
line with the header bracketif the bracketis not centered
above the door).
5.7 Remove the 2x4. Operate the door manually.Ifthe door
hitsthe rail, raise the header bracket.
NOTE: DO NOT connect power to opener at this time.
FIGURE 1
FIGURE 2
(Not Provided)
Lag Screws
5/16"- 18x1-7/8"
Measure
Distance
Hex Bolt 5/16"- 18x7/8", Lock Washer 5/16", Nut 5/16"-18
FIGURE 3
Not Provided
Finished Ceiling
Unfinished Ceiling