Chamberlain SL 1000-X3 - Manual (Page 7)

Rev J Doc 01-20098 Page 7 of 44
B. PAD AND MOUNT
Figure 4. Pad and Track Ribbon
Figure 5. Bolt Down Pattern Figure 6. Conduit Entrance Areas
1. The concrete pad must be sufficient to support the gate operator and the forces
created by the moving gate. LiftMaster recommends a pad 20” wide by 30“ long by
24” deep (Figure 4).
2. The operator must be level and parallel to the gate, so the pad should be level and
about 4” above ground level to prevent water entrance.
3. Four anchor bolts are required to secure the gate operator to the pad. The mounting
holes in the gate operator are 5/8” in diameter. ½” x 3½ ” Red Head bolts are
recommended (Figure 5).
4. Be sure to provide access for wiring conduits (Figure 6).
5. Track installation should be on concrete, not asphalt, and should be at least 10” wide
and 6” deep.
6. A 6” gate overlap at the open end of the gate when closed should be provided.
7. A 30” gate overlap at closed end of the gate when closed should be provided.
NOTE: Shading indicates acceptable areas for conduit stub access.