Chamberlain 2580 1/2 HP - Manual (Page 4)

Safety Reversing Sensor
Support bracket &
fastening hardware
is required.
See page 13.
— — — — — — — —
Door
Center
Header Wall
FINISHED CEILING
Torsion
Spring
Extension
Spring
OR
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4"
Access
Door
Wall-
mounted
Door
Control
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 20 for details.
Motor Unit
OR
One-Piece Door-Extension Spring
Header Wall
Door
Track
4
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.
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13.
Safety
Reversing Sensor
Header
Wall
Access
Door
Safety
Reversing Sensor
Gap between floor and bottom of
door must not exceed 1/4"
Wall-
mounted
Door
Control
Motor Unit
ONE-PIECE DOOR WITHOUT TRACK
Access
Door
Safety Reversing Sensor
Gap between floor and bottom of door
must not exceed 1/4"
Safety Reversing Sensor
ONE-PIECE DOOR WITH TRACK