8. Permanently attach bracket to headplate in the location
determined in Step 6. Welding is recommended for this
procedure.
9. Attach operator to bracket using 3/8 x 1-1/2 mounting
screws and hardware. Do not tighten.
10. Insert key in driven sprocket and align driven sprocket with
drive sprocket. Tighten set screws. Do not place key in
drive sprocket at this time.
11. Wrap #50 chain around drive and driven sprocket and
connect ends using #50 master link.
12. Remove slack from chain by moving operator and mounting
screws in bracket slots. Tighten mounting screws.
NOTE:
Keyway in operator output shaft may not be aligned
with keyway in drive sprocket. Complete electrical
connections to operator (refer to manual) then operate unit
with 3 button control until keyways align. Insert key in drive
sprocket and tighten set screws. Complete the installation
according to the owner’s manual.
© 2006, The Chamberlain Group, Inc.
114A1545B
All Rights Reserved
114A1545C
