Safety
Reversing Sensor
Slack in Chain Tension
is Normal When
Garage Door is Closed
Header
Wall
Safety
Reversing
Sensor
Access Door
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 17.
Gap between floor and bottom
of door must not exceed 1/4".
5
Cable
Pulley
Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Manual
Release
Rope & Handle
Door
Bracket
Curved
Door
Arm
Header
Wall
Cable
T-rail
Garage
Door
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.
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 5, page 17 - 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 21 - Depending on
garage construction, extension brackets (see
Accessories) or wood blocks may be needed to
fasten to mounting locations.
• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware that is not
provided.
• Step 11, 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 11, 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 7702C 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
One-Piece Door without Track
Header
Bracket
Cable
Pulley Bracket
Door
Bracket
Straight
Door
Arm
Curved
Door Arm
Trolley
Chain
Manual Release
Rope & Handle
Header
Wall
T-rail
Garage
Door
Cable
One-Piece Door With Track
Closed Position
Access
Door
Floor must be level
across width of door
Safety
Reversing
Sensor
Safety
Reversing
Sensor
Closed Position
