Planning - Chamberlain 1355CM-1/2HP 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 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.
SECTIONAL DOOR INSTALLATION
Horizontal and vertical reinforcement
is needed for lightweight garage
doors (fi berglass, steel, aluminum,
door with glass panels, etc.).
See page 19 for details.
Safety Reversing Sensor
ONE-PIECE DOOR WITHOUT TRACK
Header Wall
Gap between fl oor and
Safety
bottom of door must
Reversing
not exceed 1/4" (6 mm).
Sensor
Header Wall
Vertical
Centerline
of Garage
Door
Gap between fl oor
and bottom of door
must not exceed 1/4" (6 mm)
FINISHED CEILING
Support bracket &
fastening hardware
is required.
Slack in chain
See page 11.
tension is normal
when garage door
is closed.
Access
Door
Safety
Reversing
Sensor
Slack in chain tension
is normal when garage
door is closed
Extension
Spring
Torsion
OR
Spring
Wall-Mounted
Door Control
Access
Door
Safety Reversing
Sensor
ONE-PIECE DOOR WITH TRACK
Wall-mounted
Door Control
Safety Reversing
Sensor
4
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 11.
Motor Unit
Slack in chain tension is normal when
garage door is closed.
Gap between fl oor and
bottom of door must not
exceed 1/4" (6 mm).
Motor unit
Access
Door
Safety
Reversing
Sensor