Illustration Of One-Piece Door Installation - master mechanic Security+ 642-2MM Owner's Manual

Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.
You may find it helpful to refer back to this page as you proceed with the installation of your opener.
Header
Wall
Gap between floor and bottom of
door must not exceed 1/4".
Safety Reversing Sensor
Based on your particular requirements, there are several
installation steps which might call for materials and/or
hardware not included in the carton.
• Step 1, page 13 – Look at the wall or ceiling above the
garage door. The header bracket must be securely
fastened to structural supports.
• Step 6, page 20 – Do you have a finished ceiling in your
garage? If so, a support bracket and additional fastening
hardware (not supplied) may be required.
• Safety reversing sensor, page 16 – Depending on garage
construction, extension brackets (see Accessories) or
wood blocks may be needed to fasten sensors to
mounting locations.
• Step 14, page 17 – Floor mounting of the safety reversing
sensor will require hardware that is not provided.
• Step 12, page 25 – Generally, a one-piece door does not
require reinforcement. If your door is lightweight, you
can refer to the information relating to sectional doors
on page 24.
• Step 12, page 25 – Depending on your door's
construction, you might need additional mounting
hardware for the door bracket.
• Do you have an access door in addition to the garage
door? If not, Model 7702CB Outside Quick Release is
required. See page 38.
• The gap between the bottom of the garage door and
the floor cannot exceed 1/4". Otherwise, the safety
reverse system may not work properly. See page 30.
The floor or the door should be repaired.
ONE-PIECE Door Installation
Access Door
Safety Reversing Sensor
One-Piece Door without Track
Rail
Bracket
Header
Bracket
Door
Bracket
Garage
Door
Header
Wall
One-Piece Door With Track
Floor must be level
Safety
across width of door
Reversing Sensor
Closed Position
Rail
Header
Bracket
Wall
Header
Bracket
Door
Bracket
Garage
Door
7
Closed Position
Rail Assembly
Trolley
Manual
Release
Rope & Handle
Straight Curved
Door Door
Arm Arm
Access
Door
Safety
Reversing
Sensor
Trolley
Curved
Door Arm
Rail Assembly
Straight
Manual Release
Door
Rope & Handle
Arm