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5
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 WITHOUT TRACK
ONE-PIECE DOOR WITH TRACK
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 fl oor MUST NOT exceed 1/4" (6 mm). Otherwise,
the safety reversal system may NOT work properly.
• The fl oor or the garage door MUST be repaired to
eliminate the gap.
FINISHED CEILING
CLOSED POSITION
Trolley Stop Bolt
Cable
Chain
Rail
Emergency
Release
Rope &
Handle
Curved
Door Arm
Straight
Door
Arm
Door
Bracket
Garage
Door
Header
Bracket
Header
Wall
CLOSED POSITION
Trolley Stop Bolt
Cable
Trolley
Rail
Header
Bracket
Door Bracket
Straight
Door Arm
Garage Door
Header
Wall
Curved
Door Arm
Emergency
Release
Rope &
Handle
Slack in chain tension
is normal when garage
door is closed.
Wall-Mounted
Door Control
Motor Unit
Rail
Access
Door
Access
Door
Header Wall
Safety
Reversing
Sensor
Safety
Reversing
Sensor
Safety
Reversing
Sensor
Safety
Reversing
Sensor
Gap between fl oor and
bottom of door must not
exceed 1/4" (6 mm).
Gap between fl oor and
bottom of door must
not exceed 1/4" (6 mm).
Support bracket &
fastening hardware
is required.
See page 15.