Test The Safety Reversal System; Test The Protector System - Chamberlain 8500W Installation Manual

Adjustment
2

Test the Safety Reversal System

TEST
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.
ADJUST
If the door stops but does not reverse:
1. Review the installation instructions provided to insure all steps were followed;
2. Repeat Program the Travel (see Adjustment Step 1);
3. Repeat the Safety Reversal test.
If the test continues to fail, call a trained door systems technician.
IMPORTANT SAFETY CHECK:
Test the Safety Reverse System after:
• Each adjustment of limits.
• Any repair to or adjustment of the door (including springs and hardware).
• Any repair to or buckling of the floor.
• Any repair to or adjustment of the garage door opener.
3

Test the Protector System

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), and the garage door opener lights will flash 10 times.
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.
Safety Reversing Sensor
®
Safety Reversing Sensor
21
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.
1-1/2" (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.