Chamberlain HD920EV Garage Door Opener User Manual


 
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Attach the warning labels
3
3.1 Attach the entrapment warning label on the wall near the door control with tacks or
staples.
3.2 Attach the manual release/safety reverse test label in a visible location on the inside
of the garage door.
Install the Protector System
®
Introduction
Be sure power is NOT connected to the
garage door opener BEFORE installing
the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH
from a 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 fl oor.
IMPORTANT INFORMATION ABOUT THE SAFETY REVERSING SENSOR
The safety reversing sensors must be connected and aligned correctly before the garage
door opener will move in the down direction.
The sending sensor (with an amber LED) transmits an invisible light beam to the receiving
sensor (with a green LED). If an obstruction breaks the light beam while the door is closing,
the door will stop and reverse to the full open position, and the garage door opener lights will
fl ash 10 times.
NOTE: For energy effi ciency the garage door opener will enter sleep mode when the door is
fully closed. The sleep mode shuts the garage door opener down until activated. The sleep
mode is sequenced with the garage door opener light bulb; as the light bulb turns off the
sensor LEDs will turn off and whenever the garage door opener lights turn on the sensor
LEDs will light. The garage door opener will not go into the sleep mode until the garage door
opener has completed 5 cycles upon power up.
When installing the safety reversing sensors check the following:
Sensors are installed inside the garage, one on either side of the door.
Sensors are facing each other with the lenses aligned and the receiving sensor lens does
not receive direct sunlight.
Sensors are no more than 6 inches (15 cm) above the fl oor and the light beam is
unobstructed.
Safety Reversing Sensor
6" (15 cm) max. above floor
Invisible Light Beam
Protection Area