Carpenter's Level
Shim operator to a horizontal position,
using the door as a support
Middle Support Brace
Operator Support Brace
Straight Arm
Curved Arm
Door Bracket
LDT, LDTB
5
INSTALLATION
Hang the Operator
1. The illustration shows a typical method of
hanging the operator from the ceiling. Each
installation may vary, but in all cases side
braces should be used for additional strength.
2. Clearance holes are provided on both
sides of the operator for mounting the support
braces.
3. With the rail in line with the wall mount,
install the appropriate support bracing. (If
the track is longer than 15' a middle support
brace is recommended). (Figure 6)
Door Attachment
1. Fully close the door.
2. Install the door bracket to the top section of the door and in-line with the rail using suitable hard-
ware. Many installations, except solid wood doors, will require additional support for the door. Refer to
illustration. (Figure 6)
3. Install the bottom hole of the curved arm to the door bracket using a 3/8-16 bolt, 3/8 lock nut, and
two 3/8 washers (tighten only enough to still allow arm to pivot.) The pivot bolt should be closely in-
line with the top rollers.
4. Slide the trolley so that the straight arm and curved arms holes line up. Use 5/16 bolts and nuts to
fasten the two arms tightly together. (The straight arm should angle away from the door 15-45 de-
grees)
NOTE: At this time, ensure all bolts and lags are properly secured.
FIGURE 6
FIGURE 5
