Mounting The Front Bracket - Allstar CHALLENGER AC9300 Installation And Owner's Manual

C:
INSTALLING THE OPERATOR
FRONT MOUNTING BRACKET MUST BE INSTALLED TO A STRUCTURAL SUPPORT
(STUD) ON THE HEADER WALL. FAILURE TO DO SO COULD CAUSE SENSING
SYSTEM TO MALFUNCTION, RESULTING IN ENTRAPMENT, INJURY OR DEATH.
WARNING WARNING
WARNING WARNING
REINFORCE HEADER USING 2 x 6 WOOD STUDS AND LAG SCREW OR ANGLE
10437
Door
HIGH ARC RISE
4 INCHES
4 TO 8 INCHES
8 TO 12 INCHES
STEP 2:
Raise the front of the Rail/Chain assembly so that the Front Rail Bracket and Wall Mounting Bracket align. Insert the
1/4" x 4" bolt and tighten nut loosely for now. Later in the installation, this nut must be tightened securely.
STEP 3
— Sectional Doors and One Piece Doors with Track: Raise the Opener and rest the Power Unit on a ladder or other
sturdy support. Open the door the full open position.
Allow 2" of space between the Tee Rail and the top
section of the door (as shown in the illustration on page
9).
STEP 3A
— One Piece Doors without Track: Raise
the opener and rest the power unit on a ladder or other
sturdy support. Open the door to the high arc position.
Allow 2" of space between the tee rail and the door (at the
high arc position) as shown in the illustration on page 9.
The opener will be angled as shown. This is necessary for
proper operation.
NOTE:
Since the Opener will be secured permanently
in this position, open and close the door a few times to be
sure the door does not rub on the Tee Rail and that you
have allowed the proper clearances before proceeding.
IRON AND LAG SCREWS AS NECESSARY (NOT PROVIDED).
Header Bracket
Bracket Distance Above Floor
(See Chart)
Highest Point
of Travel
Measure
Distance
to Floor
Garage
Floor
HIGH ARC RISE
HORIZONTAL LINE
8 INCHES
13 INCHES
18 INCHES
STEP 1A:
Mounting the Front Bracket — One
Piece Doors Without Track:
centerline on the header above the door. Manually raise
the door to its high arc position and temporarily clamp
in that position. With the door in this high arc position,
measure the distance from the top of the door to the
floor (see figure at left). Subtract the actual door height
from the high arc distance to the floor. This is the high
arc rise of the door.
Using the table below, draw a horizontal line at the
appropriate height above the door to intersect with the
vertical centerline.
1/2" Above
High Arc Mark
High Arc Mark
Mount the Front Mounting Bracket securely with lag
screws as shown in figure above.
reinforce the header with steel angle iron or wood to
ensure a secure mount.
Wall
Mounting
Bracket
Wall Mounting Bracket
1/4" x 4"
Hex Head Bolt
Cardboard or Cloth to
protect the Housing
8
Mark a vertical
Unclamp and close the door.
110049
Front Wall
Bracket
Center of
Door
If necessary,
Nut
110050-1