Chamberlain B2212T Installation Manual - English - Page 35

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Adjustments 3 - 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" (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 but does not reverse: 1. Repeat Program the Travel (see Adjustment Step 1); 2. Repeat the Safety Reversal test. If the test continues to fail, call a trained door systems technician. 4 - 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 Open the door. Place an obstruction in the path of the door. 2 Press the remote control push button to close the door. The door will not move more than an inch (2.5 cm). 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. 35

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35
Adjustments
3
- 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"
(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 but does not reverse:
1.
Repeat Program the Travel (see Adjustment Step 1);
2.
Repeat the Safety Reversal test.
If the test continues to fail, call a trained door systems technician.
4
- 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
Open the door. Place an obstruction in the path of the door.
2
Press
the
remote
control
push
button
to
close
the
door.
The
door
will
not
move
more
than
an
inch
(2.5
cm)
.
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.