Craftsman 139.53915D Manual Del Propietário página 4

Planning
Identify the type and height of your garage door. Survey your
garage area to see if any of the conditions below apply to your
installation. Additional materials may be required. You may
find it helpful to refer back to this page and the accompanying
illustrations asyou proceed with the installation of your opener.
Depending on your requirements, there are several installation
steps which may call for materials or hardware not included in the
carton.
• Installation Step 1 - Look at the wall or ceiling above the
garage door. The header bracket must be securely fastened to
structural supports.
• Installation Step 5 - Doyou havea finished ceiling in your
garage? If so, a support bracket and additional fastening
hardware may be required.
• Installation Step 10 - Dependingupon garage construction,
extension brackets or wood blocks may be needed to install
sensors.
• Installation Step 10 -Alternate floor mounting of the safety
reversing sensor will require hardware not provided.
• Do you havean access door in addition to the garage door?
If not, Model 53702 EmergencyKey Releaseis required. See
Accessories page.
Look at the garage door where it meetsthe floor. Any gap
between the floor and the bottom of the door must not exceed
1/4" (6 mm). Otherwise, the safety reversal system may not
work properly. SeeAdjustment Step 3. Floor or door should be
repaired.
SECTIONALDOORINSTALLATIONS
• Do you havea steel, aluminum, fiberglass or glass panel
door? If so, horizontal and vertical reinforcement is required
(Installation Step 11).
• The opener should be installed above the center of the door. If
there is a torsion spring or center bearing plate in the way of
the header bracket, it may be installed within 4 feet (1.22 m) to
the left or right of the door center. See Installation Steps 1
and 11.
• If your door is more than 7 feet (2.13 m) high, see rail
extension kits listed on Accessories page.
SECTIONALDOORINSTALLATION
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 23 for details.
Header Wall
Centerline-- I
of Garage
Door
Safety Reversing Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
Rail
Extension Spring
OR
Spring
Wall-
mounted
Door \ AccessDoor
Control _[]
0
Safety
Reversing
Sensor
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 16.
tor unit
-- Header CLOSEDPOSITION
Rail Tab
Bracket
_ __..._._ / L Trilley
_/_ Garage _
I
V///A Door 'ol "1 Belt
Fi/A Spring /J', I
_'_ /i / :t!_ht _ Emergency Re,ease
Aim
Header _ _ _ Curved
Wall _J \ Door
Garage _ J Door Arm
Door--I-11 Bracket