Chamberlain 1042 Garage Door Opener User Manual


 
MOUNTING THE OPENER:
1. Getting started.
Position assembled rail
on wall next to header
bracket
(Fig. 2-4).
– Place material on floor under power head to
protect from scratching. (A box, stool, or
similar device may be needed to clear a
torsion spring.)
NOTE: For header bracket pins locate Bag 2 from
Box 1.
2. Mounting the assembly.
Attach rail to header bracket using clevis pin
and cotter pin
(Fig. 2-5).
Support power head on step-ladder to prevent
interference with header mounted (torsion)
spring.
NOTE: Before final attachment to ceiling, insure
that assembly is in proper alignment (Fig. 2-4).
NOTE: For nuts, bolts, and lag screws locate Bag
3 from Box 1.
On finished ceilings, locate ceiling joists or
trusses using a stud finder or similar device.
Attach angle iron (not provided) to joists or
trusses through finish material using (provided)
lag screws (Fig. 2-6).
On unfinished ceilings or open ceilings, straps
may attach directly to joists or trusses.
Depending on the garage construction, extra
framing material (not provided) which may be
required should be installed using appropriate
construction techniques (Fig. 2-6).
NOTE: Refer to your local building codes for
appropriate framing materials and construction
techniques.
• Attach mounting straps (not provided) to ceiling
using lag bolt
s (Fig. 2-6).
• Set height of power head to following (Fig. 2-6).
a)
Rail must clear door at door’s highest point
of travel.
b) Be level or power head slightly below level.
Securely tighten power head mounting bolts
and nuts.
Carefully raise and lower door manually. Ensure
door does not contact any section of power head
or rail.
Check that rail clamp bolts and nuts are tight.
DO NOT PLUG OPENER IN YET!
YES // OUI
NO
NO
FIG. 2-4 Position assembly and align.
VIEW
FROM ABOVE
(not to scale)
HEADER BRACKET
Mounting Straps
(not provided)
FIG. 2-6 Mounting the power head.
ANGLE IRON ON FINISHED CEILING
Attach angle iron to beams
UNFINISHED OR OPEN BEAM
Extra framing
not needed
Extra framing
NEEDED
DRYWALL
bolts & nuts
bolts & nuts
FIG. 2-5
Rail mounting to header bracket
.
COTTER PIN
CLEVIS PIN
(Chain drive
shown)
PN# 3642036534, 02/26/2010 REV. 1
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