Planning - Chamberlain 8500C Manual

Introduction

Planning

Survey your garage area to see if any of the conditions below apply to your installation.
Depending on your requirements, additional materials may be required.
THIS GARAGE DOOR OPENER IS COMPATIBLE WITH:
• Doors that use a torsion bar and springs. The torsion bar must be 1 inch (2.5 cm)
diameter.
• 4-6 inch (10-15 cm) drums, not to be used on tapered drums over 6 inches (15 cm).
• 3 to 3.9 inch (7.6cm to 9.9cm) drums may be used on doors up to 430lbs.
(195.4Kgs)
• High lift (up to 54 inches (137.2 cm) high) and standard lift sectional doors up to
14 feet (4.3 m) high.
• Doors up to 18 feet (5.5 m) wide.
• Doors up to 180 sq. ft. (16.7 sq. m).
Review or inspect proposed installation
area. The garage door opener can be
installed on the left or right side of door.
Select the side that meets the requirements
listed below.
a. Must have minimum of 2-1/2 inches
(6.4 cm) between the garage wall and
the center of the torsion bar.
b. Must have minimum of 3 inches
(7.6 cm) between the ceiling and the
center of torsion bar.
c. Must have minimum of 8.5 inches
(21.6 cm) between the side garage
wall (or obstruction) and the end of
torsion bar.
d. The torsion bar must extend at least
1-1/2 inches (3.81 cm) past the
bearing. This may vary depending on
your installation requirements.
e. An electric outlet is required within
6 feet (1.83 m) of the installation
area. If outlet does not exist, contact
a qualified electrician or use a low
voltage power supply (model 580LM).
f. Depending upon garage construction,
extension brackets or wood blocks
may be needed to install safety
reversing sensors.
g. Alternate floor mounting of the
safety reversing sensors will require
hardware (not provided).
h. Any gap between the floor and the
bottom of the door must not exceed
1/4 inch (6 mm). Otherwise, the
safety reversal system may not work
properly.
i. A model 475LM Battery Backup is
strongly recommended if there is
no access door to the garage, as
this garage door opener cannot be
used in conjunction with an external
emergency release mechanism.
c
8.5 inches
(21.6 cm)
d
Torsion bar
Wall or
obstruction
e
Safety
reversing
sensor
3
NOTE: Inspect the torsion bar while the
door is raised and lowered. It is important
that there is no noticeable movement up
and down or left and right. If the movement
is not corrected, the life of the garage door
opener will be greatly reduced.
b
3 inches
(7.6 cm)
a
2-1/2
inches
(6.4 cm)
g
f
h
i
475LM Battery Backup
Torsion
bar
Remote light