Chamberlain 2280-267 ユーザーズマニュアル

4

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.

Safety Reversing Sensor

Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 19 for details.

 — — —        — — —        — —

Header Wall

Safety
Reversing
Sensor

Gap between floor and bottom of door
 must not exceed 1/4" (6 mm)

Extension Spring

Torsion Spring

Access Door

OR

Wall-
mounted
Door 
Control

Motor Unit

FINISHED CEILING

Support bracket & 
fastening hardware
is required.
See page 12.

Vertical
Centerline
of Door

FINISHED CEILING

Support bracket
& fastening
hardware is required.
See page 12.

Safety
Reversing Sensor

Header
Wall

Access 
Door

Safety 
Reversing Sensor

Wall-
mounted
Door 
Control

Motor Unit

Gap between floor and bottom of door
 must not exceed 1/4" (6 mm)

Access
Door

Safety 
Reversing Sensor

Safety
Reversing
Sensor

Gap between floor 
and bottom of door 
must not exceed 1/4" (6 mm).