Genie 38644R.S Guide

WARNING
BE SURE ELECTRICAL POWER HAS BEEN DISCONNECTED FROM THE INPUT POWER LINES PRIOR TO REMOVING ANY ELECTRICAL COMPONENT COVER.
!
WARNING
ANY AND ALL REPAIRS MADE TO THIS UNIT MUST BE PERFORMED WITH THE DOOR DISCONNECTED FROM THE UNIT AND IN THE CLOSED POSITION.
!
38650502881 04/2015
1. Remove power from operator.
2. Press down on tabs to remove lens. FIG-1
3. Remove light bulb.
4. Note locations and remove BWC (Basic Wall Control) and STB (Safe-T-Beam®) wires. Use small screwdriver to press in on orange
tabs to remove wires. FIG-2
5. Disconnect rail assembly and mounting hardware from the opener assembly and move to suitable bench or clean oor.
6. Using a 1/4” nut driver or common screw driver, remove the 3 opener cover screws and remove opener cover. FIG-2
7. Note the locations and disconnect lights, transformer primary, AC power, red & black motor wires, transformer secondary, and
encoder harnesses. FIG-3
Tools Required: 1/4” nut driver, small common screwdriver, 10mm wrench/socket.
Approximate Time Required: 60 Minutes.
Parts Included in this kit: Motor Assembly, 3 Self Tapping Mounting Screws.
This repair will require removal of the unit from its mounting hardware and repair made on a bench or oor. Refer to your owners manual and
assembly poster for proper assembly and carefully read and understand all warnings and cautions pertaining to your unit. Manuals/instructions
can be downloaded from our websites. Refer to your unit label for website information.
NOTE: Rail not shown, rail removal is necessary for this repair.
DC Motor Assembly Replacement Instructions
FIG. 1
FIG. 2
Tabs
Cover Screws
Lens

8. Using a 1/4” nut driver or common screwdriver, remove 2 control board mounting screws and remove control board. FIG-3
9. Carefully remove all harnesses from harness keepers. FIG-3
10. Using a 10mm socket/wrench, remove 3 self tapping bolts from top of operator to remove motor. FIG-4
11. Install replacement motor in reverse order. TIP: Motor Bolts (3) are self tapping screws. Extra eort will be required to start
these screws.
12. Carefully slide all harnesses back into harness keepers.
13. Reinstall the control board, harnesses, and opener cover in reverse order. Ensure that harnesses are plugged in the correct
positions. FIG-3
14. Reinstall rail assembly to operator motor head assembly and reconnect to mounting hardware and door.
15. Reinstall BWC & STB wires, light bulb and lens.
16. Reapply power to operator.
NOTE: Limit settings will require reprogramming. Refer to your owners manual for detailed instructions.
IMPORTANT: Test opener functions. The door MUST reverse on contact with a 1-1/2” high object (or a 2 x 4 board laid at) at the
center of doorway on the oor. After adjusting either the force or limit of travel, retest door opener. Failure to adjust the opener
properly may cause severe injury or death.
FIG. 4
FIG. 3
Encoder
Mounting
Screws
Transformer
Secondary Black Motor Wire
Red Motor Wire
Harness Keeper
Light
Transformer
Primary
AC Power
WhiteYellowRed
Harness Keeper
{
{
{
{ {
Motor
Bolts (Self Tapping)
Connector
Detail
Black
White
Black
Black
White
Blue