Access
Door
Floor must be level
across width of door
Safety
Reversing Sensor
Safety
Reversing
Sensor
Door
Bracket
Straight
Door
Arm
Garage
Door
CLOSED POSITION
Header
Bracket
Curved
Door Arm
Chain
Emergency
Release
Rope &
Handle
Cable
Header
Wall
Rail
Trolley Stop Bolt
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 17.
Safety Reversing
Sensor
Header Wall
Gap between floor
and bottom of door must not exceed 1/4".
Motor unit
Wall-mounted
Door Control
Rail
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
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 floor MUST NOT exceed 1/4". Otherwise, the safety
reversal system may not work properly.
• The floor or the garage door MUST be repaired to
eliminate the gap.
WARNING
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