Chamberlain 459950 Manual De Usuario

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.

ADJUSTMENT STEP 3

Test the Safety Reversal System

TEST

• With the door fully open, place a 1-1/2" (3.8 cm) board

(or a 2x4 laid ﬂ at) on the ﬂ oor, centered under the
garage door.

• Operate the door in the down direction. The door must

reverse on striking the obstruction.

ADJUST

• If the door stops on the obstruction, it is not traveling

far enough in the down direction. Complete Adjustment
Steps 1 and 2 Program the Travel Limits and Set the
Force.

NOTE:

On a sectional door, make sure limit adjustments

do not force the door arm beyond a straight up and
down position. See Figure 3, page 26.

• Repeat the test.

• When the door reverses on the 1-1/2" (3.8 cm) board

(or 2x4 laid ﬂ at), remove the obstruction and run the
opener through 3 or 4 complete travel cycles to test
adjustment.

• If the unit continues to fail the Safety Reverse Test, call

for a trained door systems technician.

IMPORTANT SAFETY CHECK:

Test the Safety Reverse System after:

• Each adjustment of door arm length, limits, or force

controls.

• Any repair to or adjustment of the garage door

(including springs and hardware).

• Any repair to or buckling of the garage ﬂ oor.

• Any repair to or adjustment of the opener.

ADJUSTMENT STEP 4

Test The Protector System

• Press the remote control push button to open the door.

• Place the opener carton in the path of the door.

• Press the remote control push button to close the door.

The door will not move more than 1" (2.5 cm), and the
opener lights will ﬂ ash.

The garage door opener will not close from a remote if the
indicator light in either sensor is off (alerting you to the
fact that the sensor is misaligned or obstructed).

If the opener closes the door when the safety reversing
sensor is obstructed (and the sensors are no more
than 6" (15 cm) above the ﬂ oor), call for a trained door
systems technician.

Without a properly installed safety reversing sensor,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.

1-1/2" (3.8 cm) board
(or a 2x4 laid ﬂ at)

Safety Reversing Sensor