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Adjustments
2 Test the Safety Reversal System
Without a properly installed safety reversal system, persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage door.
Safety reversal system MUST be tested every month.
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After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST
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reverse on contact with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on the floor.
1. With the door fully open, place a 1-1/2 inch (3.8 cm) board (or a 2x4 laid flat) on the floor,
centered under the garage door.
2. Press the remote control push button to close the door. The door MUST reverse when it
makes contact with the board.
If the door stops and does not reverse on the obstruction, increase the down travel (refer to Adjustment
Step 1). Repeat the test. When the door reverses upon contact with the 1-1/2 inch board, remove the
board and open/close the door 3 or 4 times to test the adjustment. If the garage door opener continues
to fail the safety reversal test, call a trained door systems technician.
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3 Test the Protector System
Without a properly installed safety reversing sensor, persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage door.
1. Press the remote control push button to open the door.
2. Place the opener carton in the path of the door.
3. Press the remote control push button to close the door. The door will not move more than an
inch (2.5 cm), and the opener lights will flash.
The garage door opener will not close from a remote control if the LED in either safety reversing sensor
is off (alerting you to the fact that the sensor is misaligned or obstructed). If the garage door opener
closes the door when the safety reversing sensor is obstructed (and the sensors are no more than
6 inches [15 cm] above the floor), call for a trained door systems technician.
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