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Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.
You may find it helpful to refer back to this page as you proceed with the installation of your opener.
SECTIONAL Door Installation
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 24 for details.
Safety Reversing Sensor
Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the
carton.
• Step 1, page 12 - Look at the wall or ceiling above
the garage door. The header bracket must be
securely fastened to structural supports.
• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
additional fastening hardware may be required.
• Safety reversing sensor, page 21 - Depending
upon garage construction, extension brackets (see
Accessories) or wood blocks may be needed to
fasten sensors to mounting locations.
• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware not
provided.
• Step 11, page 24 - Do you have a steel, aluminum,
fiberglass or glass panel door? If so, horizontal
and vertical reinforcement is required.
• Look at the garage door where it meets the floor.
It must close on the floor all the way across.
Otherwise, the safety reverse system may not
work properly. See page 30. Floor or door should
be repaired.
Header Wall
Door Center
Floor must be level
across width of door
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 17.
Extension Spring
OR
Torsion Spring
Safety
Reversing
Sensor
Header
Belt Pulley
Bracket
Bracket
Garage
Door
Spring
Header
Wall
Door Bracket
Garage
Door
• If your door is more than 7 feet high, see longer rails
available on page 38.
• The opener can be installed within 4 feet of the left
or right of the door center if there is a torsion spring
or center bearing plate in the way of the header
bracket or door bracket area. If your door has
extension springs, the opener must be installed
in the center of the door. See pages 12 and 24.
• Do you have an access door in addition to the
garage door? If not, Model 7702C Outside Quick
Release is required. See page 38.
4
Access Door
Closed Position
Trolley
Belt
Straight
Door
Manual
Arm
Release
Rope & Handle
Curved
Door
Arm
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