Allstar Products Group LT 50 - Manual (Page 8)

8
STEP 3 — 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, below on the right).
Mount the Front Mounting Bracket securely with lag screws as
shown in figure at right. If necessary, reinforce the header with
steel angle iron or wood to ensure a secure mount.
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.
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.
REINFORCE HEADER USING 2 x 6 WOOD STUDS AND LAG SCREW OR ANGLE
IRON AND LAG SCREWS AS NECESSARY (NOT PROVIDED).
WARNING
STEP 1: Mounting the Front Bracket: Mark a vertical centerline on the
header above the door. By manually raising the door, determine the high arc
of the door’s travel (see illustration, top of previous page) and using a level,
transfer this measurement to the header (see illustration at left). Draw a
horizontal line, crossing the previously drawn centerline, at this point. Install
the Front Mounting Bracket securely wit lag screws as shown below. If
necessary, reinforce the header with steel angle iron or wood to ensure a
secure mount.
HORIZONTAL
LINE
VERTICAL
CENTERLINE
104369 110049
Center of
Door
Front Wall
Bracket
1/2” Above
High Arc Mark
High Arc Mark
110050-1
1/4” x 4”
Hex Head Bolt
Wall Mounting Bracket
Nut
Cardboard or Cloth to
protect the Housing
Wall
Mounting
Bracket
SECTIONAL DOORS AND ONE-PIECE DOORS
WITH TRACK
ALLOW 2” BETWEEN
TOP OF DOOR AND RAIL
DOOR FULLY
OPEN
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.