Chamberlain Garage Door Opener WD962KEV User Manual

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12
Determine the header bracket location
1
To prevent possible SERIOUS INJURY
or DEATH:
• Header bracket MUST be rigidly
fastened to structural support on
header wall or ceiling, otherwise
garage door might NOT reverse
when required. DO NOT install
header bracket over drywall.
• Concrete anchors MUST be used if
mounting header bracket or 2x4 into
masonry.
• NEVER try to loosen, move or adjust
garage door, springs, cables, pulleys,
brackets, or their hardware, ALL of
which are under EXTREME tension.
• ALWAYS call a trained door systems
technician if garage door binds,
sticks, or is out of balance. An
unbalanced garage door might NOT
reverse when required.
Installation procedures vary according to
garage door types. Follow the instructions
which apply to your door.
Installation
1.1 Close the door and mark the inside vertical centerline of the garage door.
1.2 Extend the line onto the header wall above the door.
You can fasten the header bracket within 4 feet (1.22 m) of the left or right of
the door center only if a torsion spring or center bearing plate is in the way;
or you can attach it to the ceiling when clearance is minimal. (It may be
mounted on the wall upside down if necessary, to gain approximately 1/2"
(1 cm).)
If you need to install the header bracket on a 2x4 (on wall or ceiling), use lag
screws (not provided) to securely fasten the 2x4 to structural supports.
1.3 Open your door to the highest point of travel as shown. Draw an inter secting
horizontal line on the header wall above the high point:
• 2" (5 cm) above the high point for sectional door and one-piece door with
track.
• 8" (20 cm) above the high point for one-piece door without track. This
height will provide travel clearance for the top edge of the door. NOTE: If the
total number of inches exceeds the height available in your garage, use the
maximum height possible, or refer to page 13 for ceiling installation.
Sectional door with curved track
Header Wall
Track
2" (5 cm)
Highest Point
of Travel
Door
One-piece door with horizontal track
Header Wall
Track
2" (5 cm)
Highest Point
of Travel
Door
One-piece door without track:
jamb hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Jamb
Hardware
One-piece door without track:
pivot hardware
Header Wall
8" (20 cm)
Highest
Point of
Travel
Door
Pivot
Header Wall
Unfinished Ceiling
Vertical Centerline
of Garage Door
2x4
Structural
Supports
Level
(Optional)
OPTIONAL
CEILING
MOUNT FOR
HEADER
BRACKET

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