Test The Safety Reversal System; Test The Protector System - Chamberlain Power Drive Assembly & Installation Manual

ADJUSTMENT STEP 3

TEST THE SAFETY REVERSAL SYSTEM

Test
• With the door fully open, place a 1-1/2
(or a 2 x 4 laid flat) on the floor, 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. Increase the down travel
by turning the DOWN limit adjustment screw
counterclockwise 1/4 turn.
NOTE: On a sectional door, make sure limit adjustments
do not force the door arm beyond a straight up and
down position. See page 14.
• Repeat the test.
• When the door reverses on the 1-1/2
laid flat) board, remove the obstruction and run the
opener through 3 or 4 complete travel cycles to test
adjustment.

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 an inch, and the
opener lights will flash.
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" (25 mm) above the floor), call for a trained door
systems technician.
"
(3.8 cm) board
"
(3.8cm) (or a 2x4
®
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.
• If one control (force or travel limits) is adjusted, the other
control may also need adjustment.
• 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 2 x 4 laid flat) on the floor.
1-1/2" (3.8 cm) board (or a 2x4 laid flat)
Without a properly installed safety reversing sensor, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.
Safety Reversing Sensor
22
WARNING
CAUTION
WARNING
CAUTION
Safety Reversing Sensor