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8-19. ALIGN AND TEST PHOTO EYE SENSORS
PHOTO EYE SENSORS ALIGNMENT:
Photo eye sensors maintain an invisible, unbroken beam between each
other. When the photo eye sensors are connected to the power head
and the power is on, the green light on the transmitter sensor will
illuminate. When the sensors are aligned, the red light on the receiver
sensor will illuminate.
NOTE:
Sensor alignment must be done with the door in the closed position
in order to ensure proper visibility of the sensor indicator LED.
• When photo eye system is connected to the powerhead and the power
is on, the green light on the transmitter sensor will illuminate. When the
sensors are aligned, the red light on the receiver eye will illuminate.
• If necessary loosen the fastening wheel on each photo eye sensor.
Rotate the eye sensor in the sensor cap or slide it inside the adjustment
area of the bracket until eyes are aligned and the red light on the receiver
eye illuminates (see Fig. 33).
• Tighten the fastening wheels firmly by hand to secure each photo eye
sensor in position.
• If further protection against severe sun light exposure is required, place
the lens sunshield extension on the Receiver Sensor ONLY (see Fig. 33A).
NOTE:
Identify which side of the garage door opening is exposed to the
most sunlight. Mount the transmitter (TX) sensor on the side which is
exposed to the most sun. Sunlight may affect the Safety Sensors, and this
orientation will help reduce the effect.
SAFETY TEST:
Photo eye sensors installed on opposite sides of your door opening are
intended to detect a person or object in the path of the door and prevent
the door from moving downward. The following steps will determine if the
system is functioning properly:
• Open door using the opener’s transmitter or wall control.
• Place a box or other object in the path of the door so it breaks the photo
eye beam (see Fig. 34A). Red indicator light on receiver should go out.
• Press and release the wall control button. The door should not move in the
down direction. LED’s # 7 and #8 on the operator will flash. If this does
not happen, disconnect operator and call for service.
• To reset operator, remove the obstruction and operate the door normally.
• If photo eye sensors are not aligned or are damaged, door can only be
closed by pressing and holding wall control button until door is
fully closed.
Fastening Wheel
Bracket
Rotation Adjustment
Fig. 33
Receiver Sensor
Sunshield Extension
Fig. 33A
Clear Path between Photo Eye Sensors
Infrared Beam
Photo Eye Receiver
(Red Indicator Light on)
Photo Eye Transmitter
(Green Indicator Light on)
Fig. 34
Object directly in Path between Photo Eye Sensors
Obstruction
Breaking
Infrared Beam
Photo Eye Receiver
(Red Indicator Light Off)
Photo Eye Transmitter
(Green Indicator Light On)
Fig. 34A
Summary of Contents for CarGO 500
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