CLOSED POSITION
Access
Door
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm)
Safety Reversing
Sensor
Wall-
Mounted
Door
Control
Cable
Pulley Bracket
Door
Bracket
Straight
Door
Arm
Trolley
Header
Wall
Rail
Garage
Door
Emergency Release
Rope & Handle
Chain
Header
Bracket
Curved
Door Arm
Safety Reversing
Sensor
5
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
Planning (Continued)
ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, refer to
the information relating to sectional doors in
Installation Step 11.
• Depending on your door’s construction, you may
need additional mounting hardware for the door
bracket (Step 11).
ONE-PIECE DOOR WITH TRACK
Motor Unit
Safety
Re
v
ersing Sensor
FI
N
ISHED CEILI
N
G
S
u
pport
b
racket
& fastening
hard
w
are is re
qu
ired.
See page 17.
Slack in Chain Tension
is
N
ormal
W
hen
Garage Door is Closed
Safety
Re
v
ersing Sensor
Header
W
all
Access
Door
Gap
b
et
w
een floor and
b
ottom
of door m
u
st not exceed 1/4" (6 mm).
W
all-mo
u
nted
Door
Control
ONE-PIECE DOOR WITHOUT TRACK
Idler
P
u
lley Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope
& Handle
Door
Bracket
C
u
r
v
ed
Door
Arm
Header
W
all
Rail
Garage
Door
CLOSED POSITION
