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Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.
Sectional Door Installation
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 20 for details.
Header Wall
Safety Reversing Sensor
One-Piece Door Installation
One-Piece Door without Track
Header
Wall
Gap between floor
Safety
and bottom of door
must not exceed 1/4".
Reversing
Sensor
You may find it helpful to refer back to this page as
you proceed with the installation of your opener.
Slack in chain tension
is normal when
garage door is closed.
Torsion Spring
Door Center
Safety
Reversing
Sensor
Floor must be level
Model 1702LMC Outside Quick Release
across width of door
is required if there is no access door.
Access Door
Safety
Reversing
Sensor
4
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 13.
Extension Spring
OR
Access Door
One-Piece Door with Track
Slack in chain tension
is normal when
garage door is closed.
Floor must be level
Safety
across width of door
Reversing Sensor
Access
Door
Safety
Reversing Sensor
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