Genie 38416A.S Use and care manual

1. Pull emergency release cord on carriage to disengage opener to close door if
necessary. (If unable to lower door using opener, use
extreme caution manually closing door. Before pulling
emergency release cord, make certain people and
objects are clear of door opening.)
2. Unplug opener power cord from power receptacle.
3. Open lens cover by pressing outer tabs on both sides
of motor and swing down to remove light bulbs. FIG. 1.
4. Remove wall control and Safe-T-Beam wires from
terminal block located on rear of opener FIG. 1A. Use
small common screwdriver to press in on orange tabs
while gently pulling wires from block. Mark wires to
help facilitate replacement.
5. Remove the cotter pin & clevis from door arm to
separate door from opener. FIG. 2.
6. Remove motor head and rail assembly from mounting
brackets/hardware and set on a clean work surface or oor.
7. Remove the 3-5/16”bolts from rail to motor mount to remove rail. FIG. 3.
Drive Sprocket Replacement
is repair will require removal of the unit from it’s mounting hardware and repairs made on a bench or oor. Refer to the
Owners Manual and/or Installation Poster for proper assembly and carefully read and understand all warnings and cautions
pertaining to the unit.
FIG. 1.
39187502683 11/2014
WARNING
WARNING
BE SURE ELECTRICAL POWER HAS BEEN DISCONNECTED FROM THE INPUT POWER LINES PRIOR TO REMOVING THE
MOTOR COVER.
!
ANY AND ALL REPAIRS MADE TO THIS UNIT MUST BE PERFORMED WITH THE DOOR DISCONNECTED FROM THE OPENER
AND IN THE CLOSED POSITION.
!
Lens Cover Tabs
FIG. 2. FIG. 3.
6 5 4 3 2 1
Wall Control 1-2
PhotoCells 3-6
Wire Tabs
FIG. 1A.

8. Loosen 1/2”tension nut at header end of rail to create slack in the
chain/belt. FIG. 4.
9. Place scrap block of wood under the sprocket assembly and drill
out the rivets holding the sprocket bracket to the rail with a #7
(.201) drill bit.
10. Remove screws from upper and lower brackets to separate the
sprocket bracket assembly and remove old sprocket.
11. Install replacement sprocket, with bushing to lower bracket.
12. Wrap chain/belt around sprocket.
13. Install sprocket guard and reinstall lower bracket screws.
14. Align bushing into upper bracket and assemble over sprocket.
15. Reinstall screws into sprocket guard through upper bracket.
16. Use the supplied nuts and bolts to fasten bracket assembly to the
rail.
17. Tension the chain/belt with the 1/2” tension nut. FIG. 4.
NOTE: Refer to manual for proper tension. (1/8” gap between chain/belt
and rail)
18. Assemble rail to motor head. FIG. 3.
19. Install operator to mounting hardware. Refer to owners manual
for reassembly if necessary.
20. Reinstall wall control and photocell wires. FIG. 1.
21. Reinstall Light Bulbs and close lens cover(s) and rear cover. FIG. 1.
22. Reattach door arm to carriage with clevis and hairpin. FIG. 2.
23. Move door up or down to reengage carriage into chain/belt.
24. Refer to owners manual to reset up and down limits.
25. Perform complete safety check per owners manual.
FIG. 4 .
FIG. 5.
Chain model
shown
Belt Model
Similar
Chain/belt
removed for
clarity
Chain model shown
Belt Model Similar
FIG. 6.
Upper Bracket
Lower Bracket
Sprocket
Bushing
Bushing
Sprocket Guard