Craftsman 139.53915D Manual Del Propietário página 12

INSTALLATION STEP 1
Determine the HeaderBracketLocation
To prevent possible SERIOUSINJURYor DEATH:
• Header bracket MUST be RIGIDLYfastened to structural
support on header wall or ceiling, otherwise garage door
might NOTreverse when required. DO NOTinstall header
bracket over drywall.
• Concrete anchors MUST be used if mounting header bracket
or 2x4 into masonry.
• NEVERtry to loosen, move or adjust garage door, springs,
cables, pulleys, brackets, or their hardware, ALL of which are
under EXTREME tension.
• ALWAYScall 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.
1. Close the door and mark the inside vertical centerline of the
garage door.
2. Extend the line onto the headerwall above the door.
You can fastenthe header bracketwithin 4 feet (1.22 m) of
the left or right of the door center only if a torsionspringor
center bearing plate is in the way; or you can attach it to the
ceiling (see page 13) when clearance is minimal. (It may
be mountedon the wall upside downif necessary,to gain
approximately1/2" (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 13.
3. Open your door to the highest point of travel as shown. Draw
an intersecting horizontal line on the header wall abovethe 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 clearancefor the top edge of
the door.
NOTE: I f the totalnumberof inchesexceeds theheightavailablein
yourgarage,usethemaximumheightpossible,or refertopage 13for
ceilinginstallation.
HeaderWall
Unfinished @
Ceiling OPTIONAL
CEiLiNG
MOUNT
FOR
HEADER
BRACKET
Vertical Centerline
of Garage Door
2x4 Structural
Supports
Header W all
(5cm) Track
of Travel
--Door
Sectional door with curved track
Y
Header Wall Track
T
One-piece door with horizontal track
_\\Wall
U 8/2°0 /
Door__J _ig_st
_Hardware [[ of Travel
One-piece door without track:
jamb hardware
Door
HeaderWall
I 8" (20cm)
_;, Highest
Point
of Travel
Pivot
One-piece door without track:
pivot hardware
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