Test The Safety Reversal System; Test The Protector System - LiftMaster 8155W Guide De L'utilisateur

Adjustment
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.
• After ANY adjustments are made, the safety reversal
system MUST be tested. Door MUST reverse on
contact with 1-1/2" high (3.8 cm) object (or 2x4 laid
fl at) on the fl oor.
2.1
With the door fully open, place a 1-1/2 inch
(3.8 cm) board (or a 2x4 laid fl at) on the fl oor,
centered under the garage door.
2.2
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 (see 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 test continues to fail, call a trained door systems
technician.
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.
3.1
Open the door. Place the garage door opener
carton in the path of the door.
3.2
Press the remote control push button to close
the door. The door will not move more than
an inch (2.5 cm), and the garage door opener
lights will fl ash 10 times.
2
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 fl oor), call
for a trained door systems technician.
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