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identify the type and height of your garage door. Survey your
garageareato 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 andthe 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
garagedoor. The header bracket must be securely fastened to
structural supports.
• Installation Step 5 - Do you have a finished ceiling in your
garage? if so, a support bracket and additional fastening
hardware may be required.
• installation Step 12- Dependingupon garageconstruction,
extension brackets or wood blocks may be needed to install
sensors.
• installation Step 12- Alternate floor mounting of the safety
reversingsensor will require hardware not provided.
Do you have an accessdoor in addition to the garage door? if
not, Model 139.53702 EmergencyKey Releaseis required. See
Accessories page.
Look at the garagedoor where it meets the floor. Any gap
betweenthe 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 2. Floor or door should be
repaired.
SECTIONALDOORINSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass panel door?
if so, horizontal and vertical reinforcement is required
(installation Step 8).
• 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 headerbracket, it may be installed within 4 feet (1.22 m) to
the left or right of the door center. See installation Steps 1
and 8.
• 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 18 for details.
Header Wall
Slack in chain tension is
normal when garage door
is closed.
FINISHED CEILING
SuppoR bracket
& fastening
hardware is required. See
page 16.
OR
Torsion Spring
Sprin,
Motor Unit
Vertical Centerline
of Garage Door
Safety Reversing Sensor
Gap between floor and bottom
of the door must not exceed
1/4" (6 mm).
Wall-mounted
Door Control
h
Safety Reversing Sensor
Access Door
O
Header
Bracket
Rail Tab
CLOSEDPOSITION
Trolley
Garage Door
Spring
Door
Bracket
Cuwed
Door Arm
Chain
Emergency
Release
Rope & Handle
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