The Protector System (Safety Reversing Sensors) - Chamberlain 8165W User Manual

Operation
The Protector System
Be sure power is NOT connected to the garage door
opener BEFORE installing the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH from closing
garage door:
• Correctly connect and align the safety reversing
sensor. This required safety device MUST NOT be
disabled.
• Install the safety reversing sensor so beam is NO
HIGHER than 6" (15 cm) above garage floor.
Wing
Nut
Safety Reversing Sensor
6" (15 cm) max. above floor
IF THE AMBER LED ON THE SENDING SENSOR IS NOT GLOWING:
1. Make sure there is power to the garage door opener.
2. Make sure the sensor wire is not shorted/broken.
3. Make sure the sensor has been wired correctly: White wires to white terminal and white/black wires to gray terminal.
IF THE GREEN LED ON THE RECEIVING SENSOR IS NOT GLOWING:
1. Make sure the sensor wire is not shorted/broken.
2. Make sure the senors are aligned.
10
(Safety Reversing Sensors)
®
(invisible light beam)
Amber LED
SENDING SENSOR
The door will not close if the sensors have not been
installed and aligned correctly.
When the light beam is obstructed or misaligned while the
door is closing, the door will reverse and the garage door
opener lights will flash ten times. If the door is already
open, it will not close.
The sensors can be aligned by loosening the wing nuts,
aligning the sensors, and tightening the wing nuts. Check
to make sure the LEDs in both sensors are glowing
steadily. The LEDs in both sensors will glow steadily if they
are aligned and wired correctly.
Green LED
RECEIVING SENSOR
For the complete manual visit LiftMaster.com/Customer-Support
Wing
Nut
Safety Reversing Sensor
6" (15 cm) max. above floor