Chamberlain 2265 Manuale Utente

Safety Reversing Sensor

Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 20 for details.

 — — —        — — —        — —

Door
Center

Header Wall

Safety
Reversing
Sensor

Gap between floor and bottom of door
 must not exceed 1/4"

Extension Spring

Torsion Spring

Access Door

OR

Slack in chain tension
is normal when
garage door is closed.

Wall-
mounted
Door 
Control

Motor Unit

FINISHED CEILING
Support bracket & 
fastening hardware
is required.
See page 13.

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.

FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13.

Slack in chain tension
is normal when
garage door is closed.

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

Access
Door

Safety
Reversing Sensor

Safety
Reversing 
Sensor

Slack in chain tension is normal when 
garage door is closed

Gap between floor 
and bottom of door 
must not exceed 1/4"