Safety Reversing Sensor
Support bracket &
fastening hardware
is required.
See page 21.
— — — — — — — —
Header Wall
FINISHED CEILING
Torsion
Spring
Extension
Spring
OR
Safety Reversing Sensor
Gap between floor
and bottom of door
must not exceed 6 mm.
Access
Door
Wall-
mounted
Door
Control
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 25 for details.
Motor unit
Slack in chain tension
is normal when
garage door is closed
(Optional Accessory)
(Optional Accessory)
Vertical
Centerline of
Garage Door
4
SECTIONAL DOOR INSTALLATION
Planning
Identify the type and height of your garage door. Survey
your garage area to see if any of the conditions below
apply to your installation. Additional materials may be
required. You may find it helpful to refer back to this page
and the accompanying illustrations as you proceed with
the installation of your opener.
Depending on your requirements, there are several
installation steps which may call for materials or hardware
not included in the carton.
•
Installation Step 1 –
L
ook at the wall or ceiling above
the garage door. The header bracket must be securely
fastened to structural supports.
•
Installation Step 5 – Do you have a finished ceiling in
your garage? If so, a support bracket and additional
fastening hardware may be required.
•
Do you have an access door in addition to the garage
door? If not,
M
odel 7702C
B
Outside Quick Release is
required. See Accessories page.
Cable Pulley
Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Emergency
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
CLOSED POSITION
Rail
Chain
•
L
ook at the garage door where it meets the floor. Any
gap between the floor and the bottom of the door must
not exceed 6 mm. Otherwise, the safety reversal system
may not work properly. See Adjustment Step 3. Floor or
door should be repaired.
SECTIONAL DOOR INSTALLATIONS
•
Do you have a steel, aluminum, fiberglass or glass panel
door? If so, horizontal and vertical reinforce ment is
required
(
Installation Step 10
)
.
•
The opener should be installed above the center of the
door. If there is a torsion spring or center bearing plate in
the way of the header bracket, it may be installed within
1.2 m to the left or right of the door center. See
Installation Steps 1 and 10.
