LiftMaster ATSW Manual Del Usuario página 13

Installation
5 Hang the operator
To avoid possible SERIOUS INJURY from a falling door operator, fasten it SECURELY to structural supports of
the building. Concrete anchors MUST be used if installing ANY brackets into masonry.
Hanging your door operator will vary depending on your building. Two representative installations are shown. Yours
may be different. Hanging brackets should be angled (Figure 1) to provide rigid support. On finished ceilings (Figure
2), attach a sturdy metal bracket to structural supports before installing the operator. This bracket and fastening
hardware are not provided.
1. Measure the distance from each side of the motor unit to the structural support.
2. Cut both pieces of the hanging bracket to required lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with 5/16"-18 x 1-7/8" lag screws (not provided).
5. Fasten the operator to the hanging brackets with 5/16"-18 x 7/8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the door (or in line with the header bracket if the bracket is not
centered above the door).
7. Remove the 2x4. Operate the door manually. If the door hits the rail, raise the header bracket.
NOTE: DO NOT connect power to operator at this time.
Lock Washer 5/16"
FIGURE 1
Unfinished Ceiling
FIGURE 3
Measure
Distance
Hex Bolt 5/16"- 18x7/8", Lock Washer 5/16", Nut 5/16"-18
13
HARDWARE
Hex Bolt 5/16"- 18x7/8"
FIGURE 2
Finished Ceiling
Not Provided
(Not Provided)
Lag Screws
5/16"- 18x1-7/8"
Nut 5/16"-18