Allstar Products Group 3500 - Manual (Page 8)

8
HIGH ARC RISE HIGH ARC RISE HORIZONTAL LINE
4 INCHES 6 INCHES
4 TO 8 INCHES 11 INCHES
8 TO 12 INCHES 16 INCHES
STEP 1A: Mounting the Front Bracket — One
Piece Doors Without Track: Mark a vertical
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. Unclamp and close the door.
Using the table below, draw a horizontal line at the
appropriate height above the door to intersect with the
vertical centerline.
Mount the Front Mounting Bracket securely with lag
screws as shown in figure below. If necessary,
reinforce the header with steel angle iron or wood to
ensure a secure mount.
C: INSTALLING THE OPERATOR
Header Bracket
Bracket Distance Above Floor
(See Chart)
Highest Point
of Travel
Measure
Distance
to Floor
Garage
Floor
Door
104370
LAG SCREWS
5/16” X 1-7/8”
HIGH ARC (RISE)
HORIZONTAL LINE
VERTICAL
CENTERLINE
104371