Craftsman 139.53834SRT3 Garage Door Opener User Manual


 
Installation Section: Pages 12 - 27
Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to
garage door types. Follow the instructions
which apply to your door.
If the header bracket is not rigidly fastened to
a structural support on the header wall or
ceiling, the safety reverse system may not
work properly (see page 30). The door might
not reverse when required, and could cause
serious injury or death.
The garage door springs, cables, pulleys,
brackets and their hardware are under extreme
tension. Do not attempt to loosen, move or
adjust them yourself. Serious personal injury
or death could result. Call for professional
Vertical -- Ceilin -- garage door service.
Header __ _ Guldehne
Wall
2x4 Structural
Supports _ Close the door and mark the inside
II1-- vertical centerline of the garage door.
III.IIYP_--_.-_-----__ II I IL,_ 1 Extend the line onto the header wall
III].dl abovethedoor,
I]u_j IIt II;I __f I Remember, you can fasten the
II I_ L_ I1_1 III IIY/T I header bracket within 2 feet of the
!! IF1 --__L--J_i ! left or right of the door center onlyif
II III I/I !l;_e_,_=gI_--I_ ! ] atorsionspringorcenterbearing
I III Ill tl:lG_'_e'i°°lllIit I plate is in the way; or you can attach
li_ ,i _L II L.[] I it to the ceiling (refer to page 14)
II_ Iff III _'1 [ I when clearance is minimal. (It may
11II I III Ill III I ! bemountedonthewallupsidedown
I II I Ill _ I I if necessary, to gain approximately
I l 1 L 1/2".)
II tFf_ III Ill Ill I Ifyouneedtoinsta//theheaderbracket
II_Lt t I!1 II_ on a 2x4 (on wall or ceiling), use lag
!l _^I _ ...___ _ screws (not provided) to securely fasten
_ the 2x4 to structural supports as shown
.......... here and on page 13.
Open your door to the highest
point of travel as shown. Draw
an intersecting horizontal line
on the header wall 2" above
the high point. This height will
provide travel clearance for the
top edge of the door.
Door clearance brackets are
available for sectional doors
when headroom clearance is
less than 2". See accessory
page 38.
Door
Ceiling
Header
_Wall Track
Highest Point
of Travel
Header
Track
of Travel
Proceed to Step 2, page 14.
Sectional door
with curved track
One-piece door
with horizontal track
12