B&D Controll-A-Door 4 Instructions Manual page 5

ONE-PIECE DOOR INSTALLATIONS
• Generally, a one-piece door does not require
reinforcement. If your door is lightweight, you can
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
Header
Wall
Safety Reversing Sensor
One-Piece Door with Track
Gap between floor
and bottom of door
Safety must not exceed 6mm.
Reversing Sensor
114A2558F
Access Door
Gap between floor and bottom
of door must not exceed 6mm.
Access
Door
Safety
Reversing Sensor
• The gap between the bottom of the garage door
and the floor cannot exceed 6mm. Otherwise, the
safety reverse system may not work properly. See
Adjustment Step 3. The floor or the door should be
repaired.
Chain
Pulley Bracket
Door Bracket
Safety
Reversing
Sensor
Header
Wall
CLOSED POSITION
Chain Pulley Bracket
Header
Wall
Header
Curved
Bracket
Door Arm
Door
Garage
Bracket
Door
5
CLOSED POSITION
Trolley
Header
Bracket
Rail
Straight Curved
Door Door
Arm Arm
Garage
Door
Trolley
Chain
Rail
Emergency
Release
Straight
Rope & Handle
Door
Arm
Chain
Emergency
Release
Rope &
Handle