12
TEST THE SAFETY REVERSE SYSTEM
Procedure:
With door opened place a 40 mm high obstacle (1) laid flat on the floor under the garage door. Operate
the door in the down direction. The door must reverse off the obstacle after contact. If the door stops on the obstacle,
remove obstacle and repeat Program the Limits and Force Steps, then repeat safety reverse test.
When the door reverses off the 40 mm high obstacle, remove the obstacle and run the opener through a complete
travel cycle. Door must not reverse in closed position. If it does, repeat Program the Limits and Force then repeat
safety reverse test. If continuous reversals occur, contact Chamberlain Customer Service.
1
40mm
The safety reverse system test is important. Garage door must reverse on contact with a 40 mm high
obstacle laid flat on the floor. Failure to properly adjust opener may result in serious personal injury from
a closing garage door. Repeat test once a month and adjust as needed.
20
