Chamberlain SL600 Installation Manual page 9

INSTALLATION
2. Prepare a trench and install the electrical
conduit. All conduit should be 3/4" diameter
maximum.
NOTE: The number of conduits will depend on
your site and the accessories to be installed.
3. Prepare a form box larger than the mounting
plate and insert the form box in the hole
(Figure 2). The form box should be 1-3/4" (50
mm) above the ground (Figure 2).
4. Insert an iron grid inside the form to reinforce
the concrete (Figure 2).
5. Fill the form box with concrete and wait for at
least 24 hours to allow the concrete to cure
(Figure 3).
6. Remove the form box (Figure 4).
7. Fill the hole around the concrete form with soil
(Figure 4).
Figure 2
Figure 3
Figure 4
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