19
WARNING
Contact Obstruction Test
IF OPENER DOES NOT RESPOND PROPERLY TO THESE TESTS (Sections 19 AND 20), HAVE A QUALIFIED
SERVICE PERSON MAKE NECESSARY ADJUSTMENTS/REPAIRS, OR SEVERE OR FATAL INJURY COULD
RESULT FROM OPERATING THE DOOR/OPENER.
Tool needed - 2 x 4 board
After installing the opener, the door must
reverse when it contacts a 1 1/2 inch high
object (or a 2 x 4 board laid flat) on the
garage floor.
Using the wall station, activate the door to
the fully open position. Place a 2 x 4 flat on
the garage floor, under the door path.
Activate the door to the closed position with the wall station.
Upon contacting the 2 x 4 board, the door should reverse.
If door stops on the 2 x 4 board, adjust the close limit as per Section 18 until door reverses upon
contact with 2 x 4 board.
When the door reverses, remove the 2 x 4 board and run the full cycle of open and
close of the door. Door should not reverse when it comes to the fully closed position
on the floor.
NOTE:
If opener fails to pass this test, adjust the force as per page 33 (Opening and Closing Force
Adjustment) and repeat Section 19 test.
2 x 4 laid flat
On the Floor
23
