Planning - Chamberlain Security+ 3245M Owner's Manual

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
SECTIONAL DOOR INSTALLATION
Horizontal and vertical reinforcement
is needed for light weight garage doors
(fi berglass, steel, aluminum,
door with glass panels, etc.).
See page 20 for details.
Safety Reversing Sensor
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
Safety Reversing
Sensor
Header Wall
Vertical
Centerline of
Garage Door
Gap between fl oor and bottom of door
must not exceed 1/4" (6 mm).
Slack in chain tension
is normal when
garage door is closed.
Wall-Mounted
Door Control
Safety
Reversing Sensor
Gap between fl oor
and bottom of door
must not exceed 1/4" (6 mm).
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.
FINISHED CEILING
Support bracket &
fastening hardware
is required.
Slack in chain tension
See page 12.
is normal when
garage door is closed.
Extension Spring
OR
Torsion Spring
Safety
Reversing
Sensor
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 12.
ONE-PIECE DOOR WITH TRACK
Access
Door
4
Motor Unit
Wall-Mounted
Door Control
Access
Door
Slack in chain tension is
normal when garage door
is closed.
Gap between fl oor and
Safety
bottom of door must
Reversing
not exceed 1/4" (6 mm).
Sensor
Motor Unit
Access
Door
Safety
Reversing
Sensor