Important Test: Opener Obstruction
Sensing Feature for Doors (both
Sectional and One Piece)
A. Activate door to the Open position.
B. Place 2 x 4 board laid flat on garage floor under
path of the door. See Figure at right.
C. Activate door to close position; upon contacting
solid object, the door should stop, then reverse
direction within 2 seconds and travel to the full open
position.
Note: If the fails to pass this test, see Adjustment 3
and move the Close Limit Stop one increment
towards the door to increase down travel. Also
review Steps 8 and 9, Page 8 for Sectional Doors or
Step 10, Page 8 for One Piece Doors.
REPEAT THIS TEST MONTHLY!
Solid Test Object
110055-3
Adjustment #4: Obstruction Sensing
(Closing Direction)
Your opener is designed to automatically reverse the
door during closing travel whenever it comes into
contact with an object up to the last 1-1/2 inch of travel
above the floor. An object on the floor with a height of
less than 1-1/2 inch will cause the door to stop. (Test
according to the instructions below.)
If the opener reverses properly with a 2 x 4 board laid
flat on the garage floor (as the test below) and stops in
the fully closed position, proceed to Adjustment #6.
If the door reverses when it comes into contact with the
floor, move the close limit stop, located on the left side
(inside looking out, see figure Adjustment #1), towards
the power head unit. It is advised that you move the
close limit stop one link at a time and run opener
through another close cycle, until the door stops when
it comes into contact with the floor.
If the door comes into contact with a 2 x 4 board laid
flat on the garage floor and stops instead of reversing,
move the close limit stop away from the power head
unit. It is advised that you move the close limit stop
one link at a time and run opener through another close
cycle, until the door reverses when it comes into
contact with the 2 x 4 board.
E: OPERATION AND ADJUSTMENT INSTRUCTIONS
W A R N I N G
IMPROPER ADJUSTMENT OF
SENSITIVITY SYSTEM FORCE COULD
CAUSE ENTRAPMENT, INJURY OR
DEATH. SET ADJUSTMENTS FOR JUST
ENOUGH FORCE TO OPERATE THE
DOOR RELIABLY, BUT NO STRONGER.
Contact a service professional to
correct any binding, sticking or other
door problems. DO NOT OVER-ADJUST
SENSITIVITY SYSTEM TO
COMPENSATE FOR A POORLY
WORKING DOOR.
THE SENSITIVITY SYSTEM REVERSING TEST SHOULD
BE PERFORMED MONTHLY TO ENSURE THAT THIS
IMPORTANT SYSTEM REMAINS IN PROPER
ADJUSTMENT.
W A R N I N G
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