Planning; Sectional Door Installations - Craftsman 139.53993DM Manual Del Propietário

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
fi nd it helpful to refer back to this page and the accompanying
illustrations as you 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 4 – Depending upon garage construction,
extension brackets or wood blocks may be needed to install
sensors.
• Installation Step 4 – Alternate fl oor mounting of the safety
reversing sensor will require hardware not provided.
• Installation Step 6 – Do you have a fi nished ceiling in your
garage? If so, a support bracket and additional fastening
hardware may be required.
SECTIONAL DOOR INSTALLATION
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fi berglass, steel, aluminum, door with
glass panels, etc.). See page 23 for details.
Header Wall
Vertical
Centerline of
Garage Door
Safety Reversing Sensor
Torsion
Spring
Safety Reversing Sensor
Gap between fl oor and
bottom of door must not
exceed 1/4" (6 mm).
• Do you have an access door in addition to the garage door?
If not, Model 53702 Emergency Key Release is required. See
Accessories page.
• Look at the garage door where it meets the fl oor. Any gap
between the fl oor and the bottom of the door must not exceed
1/4" (6 mm). Otherwise, the safety reversal system may not
work properly. See Adjustment Step 3. Floor or door should be
repaired.

SECTIONAL DOOR INSTALLATIONS

• Do you have a steel, aluminum, fi berglass or glass panel
door? If so, horizontal and vertical reinforce ment is required
(Installation Step 12).
• 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 (1.2 m)
to the left or right of the door center. See Installation Steps
1 and 12.
• If your door is more than 7 feet (2.13 m) high, see rail
extension kits listed on Accessories page.
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 19.
Rail
Extension
OR
Spring
Wall-
Mounted
Door
Control
Access
Door
4
Motor Unit
CLOSED POSITION
Header
Bracket
Rail Bracket
Garage
Door
Spring
Straight
Door
Arm
Header
Curved
Wall
Door
Door
Arm
Garage
Bracket
Door
Rail Assembly
Trolley
Emergency
Release
Rope & Handle