5
Access
Door
Safety
Re
v
ersing Sensor
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).
Door
Bracket
Straight
Door
Arm
Garage
Door
CLOSED POSITION
Header
Bracket
C
u
r
v
ed
Door Arm
Chain
Emergency
Release
Rope &
Handle
Ca
b
le
Rail
Trolley Stop Bolt
Header
W
all
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).
Safety Reversing Sensor
Access
Door
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 16.
Safety Reversing
Sensor
Header Wall
Gap between floor
and bottom of door must not exceed 1/4" (6 mm).
Wall-mounted
Door Control
Rail
Motor Unit
Slack in chain tension
is normal when garage
door is closed.
ONE-PIECE DOOR WITHOUT TRACK
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Curved
Door
Arm
Header
Wall
Cable
Rail
Garage Door
Trolley Stop Bolt
CLOSED POSITION
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
ONE-PIECE DOOR WITH TRACK
