Safety Re
v
ersing Sensor
S
u
pport
b
racket &
fastening hard
w
are
is re
qu
ired.
See page 11.
— — — — — — — —
Header
W
all
FI
N
ISHED CEILI
N
G
Torsion
Spring
Extension
Spring
OR
Safety
Re
v
ersing
Sensor
Gap
b
et
w
een floor
and
b
ottom of door
m
u
st not exceed 1/4" (6 mm)
Access
Door
W
all-
mo
u
nted
Door
Control
Horizontal and
v
ertical reinforcement
is needed for light
w
eight garage doors
(fi
b
erglass, steel, al
u
min
u
m, door
w
ith
glass panels, etc.). See page 1
8
for details.
Motor Unit
Slack in chain tension
is normal
w
hen
garage door is closed.
Vertical
Centerline of
Garage Door
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.
Without a properly working safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• The gap between the bottom of the garage door and
the floor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
WARNING
CAUTION
WARNING
WARNING