1 of 4
39343504195
03/2019
Transformer Replacement
(PRO MODELS)
WARNING
BE SURE ELECTRICAL POWER HAS BEEN DISCONNECTED FROM THE OPENER PRIOR TO REMOVING THE MOTOR COVER.
!
WARNING
ANY AND ALL REPAIRS MADE TO THIS UNIT MUST BE PERFORMED WITH THE DOOR DISCONNECTED FROM THE OPENER AND IN THE
CLOSED POSITION.
!
These instructions are written assuming that you will have ample room around Opener to perform this repair. Some rare instances
will require removal of the unit from it’s mounting hardware and repair made on a bench or floor. Refer to your Owners Manual or
Installation Poster for proper assembly and carefully read and understand all warnings and cautions pertaining to your unit.
FIG.1
FIG. 2
1. Close Door. (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.) Pull
emergency release cord on carriage to disengage opener.
2. Unplug opener power cord from power receptacle. or shut down breaker.
3. Remove Battery Backup (BBU) from powerhead, if equipped: FIG. 1.
•
Unplug harness from top of powerhead.
4. Remove lens cover by pressing top tabs down and slide lens cover out. Remove light bulbs.
5. Remove 3 screws securing cover to chassis. FIG.2.
6. Remove wall control and Safe-T-Beam® wires from terminal block located on the front of powerhead.
FIG. 2.
•
Use small common screwdriver to press in on orange tabs while gently pulling wires from block. Mark
wires to help facilitate replacement.
Parts removed for clarity
Battery Back-up
