Chamberlain 3130M 1/3 HP - Manual (Page 4)

4
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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 fi nd it helpful to refer back to this page and the
accompanying illustrations as you proceed with the installation of your opener.
ONE-PIECE DOOR WITHOUT TRACK
ONE-PIECE DOOR WITH TRACK
Header Wall
Header Wall
FINISHED CEILING
FINISHED CEILING
Horizontal and vertical reinforcement is
needed for lightweight garage doors
(fi berglass, steel, aluminum, door with
glass panels, etc.). See page 19 for details.
Support bracket &
fastening hardware
is required.
See page 15.
Support bracket &
fastening hardware
is required.
See page 15.
Motor unit
Motor unit
Extension
Spring
Vertical
Centerline
of Garage
Door
Wall-
mounted
Door
Control
Wall-mounted
Door Control
Wall-mounted
Door Control
Gap between fl oor and bottom of
door must not exceed 1/4" (6 mm).
Gap between fl oor and bottom of
door must not exceed 1/4" (6 mm).
Gap between fl oor and bottom of
door must not exceed 1/4" (6 mm).
Torsion
Spring
OR
Access
Door
Access
Door
Access
Door
Safety Reversing Sensor
Safety Reversing Sensor
Safety Reversing Sensor
Rail
Rail
Safety Reversing Sensor
Safety Reversing Sensor
Safety Reversing
Sensor