Chamberlain Elie Series 3850C, Руководство пользователя

Страница: 8 / 80

8
INSTALLATION STEP 1
Determine the Header Bracket
Location
Installation procedures vary according to garage door
types. Follow the instructions which apply to your door.
1. Close the door and mark the inside vertical centerline
of the garage door.
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 (see page 9)
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 as
shown here and on page 9.
3. Open your door to the highest point of travel as shown.
Draw an intersecting 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 9 for ceiling
installation.
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.
Header W all
Sectional door with curved track
Highest Point
of Tra
v el
Door
2" (5 cm)
One-piece door with horizontal track
Door
Track
Header W all
Highest Point
of Tra
v el
2" (5 cm)
Track
Unfinished
Ceiling
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Header W all
2x4
Str u ct u ral
S u pports
Vertical Centerline
of Garage Door
Le v el
(optional)
2x4
WARNING
CAUTION
WARNING
WARNING
Door
Jam b
Hard w are
One-piece door without track:
jamb hardware
8 " (20 cm)
Highest
Point
of Tra
v el Door
Pi v ot
8 " (20 cm)
One-piece door without track:
pivot hardware
Highest
Point
of Tra
v el
Header W all
Header W all