WHAT TYPE OF DOOR DO YOU HAVE?
Look at the photos on the right. Door type determines
which of the remaining installation steps apply to you.
NOTE: Will Not Operate twice as fast on a one-piece
door.
1. Determine type of garage door (Fig. 1-17).
Type One
Track-guided doors–May be sectional or
one-piece (rare) with wheels attached which
ride within a metal “track.”
Type Two
Trackless–One piece doors only, normally
uses a system of very heavy framework for
bracing, and has no “track” but swings on
large spring loaded hinges or pivots at
either side of the door.
FOR TRACK GUIDED DOORS
2. Find center of door and header* (Fig. 1-18).
• Close door.
• Measure door width.
– Mark a vertical line (“C”) in the center on
inside of door and header.
3. Find header bracket position.
• Raise door, watching top edge of door.
• Stop door when edge reaches highest point
of travel.
• Measure distance from top edge of door to
floor (distance “H”) (Fig.1-19).
– add 2-1/2 inches to “H” (Fig. 20).
• Draw horizontal line across line “C” at
this height on header.
NOTE: If spring is in the way, place header
bracket above spring. Do Not Move Door Spring.
* The header is a heavily reinforced section of the
wall just above the top of the garage door
opening. Usually consisting of an engineered
lumber beam or layers of 2" x 12" lumber and
particle board sandwiched together.
OPERATOR INSTALLATION
Fig. 1-17 Type of door
TRACK GUIDED
TRACKLESS
Centerline (“C”)
Track
Sectional
Fig. 1-18 Find center of door
Centerline (“C”)
Fig. 1-20 Find header bracket position
Top of door
Highest point of travel
+ 2 1/2
"
(horizontal line)
Header bracket
goes here
“H”
Track
“H”
One-piece
HIGHEST POINT OF
TRAVEL
HIGHEST POINT OF
TRAVEL
Track guided doors
Fig. 1-19 Find distance “H”
12
Header
