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4
Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 18 for details.
Support bracket &
fastening hardware
is required.
See page 11.
— — — — — — — —
Header Wall
Safety
Reversing
Sensor
Gap between floor and bottom
of door must not exceed 1/4"
FINISHED CEILING
Extension Spring
Torsion Spring
Access Door
OR
Slack in chain tension
is normal when
garage door is closed.
Vertical Centerline
of Garage Door
Wall-
mounted
Door
Control
SECTIONAL DOOR INSTALLATION
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 as you proceed with the installation of your opener.
Chain Pulley
Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Chain
CLOSED POSITION
Rail
Without a properly working safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
The gap between the bottom of the garage door and the •
floor MUST NOT exceed 1/4" (6 mm). Otherwise, the safety
reversal system may not work properly.
The floor or the garage door MUST be repaired to eliminate •
the gap.