Chamberlain ATS 2113X - Manual (Page 11)

11
INSTALLATION STEP 4
Position the Opener
SECTIONAL DOOR ONLY
A 2x4 laid flat is convenient for setting an ideal door-to-rail
distance.
Raise the opener onto a stepladder. You will need help at this •
point if the ladder is not tall enough.
Open the door all the way and place a 2x4 laid flat on the top •
section beneath the rail.
Trolley
Release Arm
ENGAGED RELEASED
To prevent damage to garage door, rest garage door opener rail
on 2x4 placed on top section of door.
If the top section or panel hits the trolley when you •
raise the door, pull down on the trolley release arm
to disconnect inner and outer sections. Slide the outer trolley
toward the motor unit. The trolley can remain disconnected
until Installation Step 12 is completed.
Rail
2x4 is used to determine
the correct mounting height
from the ceiling Door
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 finished ceilings (Figure 2), attach a sturdy metal
bracket to structural supports before installing the opener. This
bracket and fastening hardware are not provided.
Measure the distance from each side of the motor unit to the 1.
structural support.
Cut both pieces of the hanging bracket to required lengths. 2.
Drill 3/16" pilot holes in the structural supports. 3.
Attach one end of each bracket to a support with 4.
5/16"-18x1-7/8" lag screws.
Fasten the opener to the hanging brackets with 5/16"-18x7/8" 5.
hex bolts, lock washers and nuts.
Check to make sure the rail is centered over the door (or in line 6.
with the header bracket if the bracket is not centered above the
door).
Remove the 2x4. Operate the door manually. If the door hits the 7.
rail, raise the header bracket.
Grease the top and underside of the rail surface where the 8.
trolley slides with rail grease.
Lag Screw 5/16"-18x1-7/8"
Hex Bolt
5/16"-18x7/8"
Nut 5/16"-18 Lock Washer 5/16"
HARDWARE SHOWN ACTUAL SIZE
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Measure
Distance
Lag Screws
5/16"-18x1-7/8"
Structural
Supports
Lag Screws
5/16"-18x1-7/8"
Bracket
(Not Provided)
FINISHED CEILING
(Not Provided)
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
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.