Instructions / Assembly

25
17. ALIGN AND TEST PHOTO EYE SENSORS
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 operator’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. 57.
AFTER THE SENSORS HAVE BEEN PROPERLY ALIGNED.
MAKE SURE THAT THE SYSTEM OPERATION AND
SAFETY TESTS OUTLINED BY THE GARAGE DOOR
OPENER MANUFACTURER HAVE BEEN VERIFIED.
PHOTO EYE SENSORS ALIGNMENT:
The photo eye sensors maintain an invisible, unbroken beam
between each other. See Fig. 56.
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 the photo eye system is connected to the operator
and the power is on, the green light on the transmitter sensor
flashes, if the sensors are not aligned. When the sensors are
aligned, the green light on the transmitter sensor will turn
steady. See Fig. 55.
 Sensors must be installed parallel to the door plane and make
sure the sensors are facing each other.
Fig. 56
Fig. 57
Object directly in Path between Photo Eye Sensors
Obstruction
Breaking
Infrared Beam
Photo Eye Receiver (RX)
(Red Indicator LED Light “On”)
Clear Path between Photo Eye Sensors
Infrared Beam
Photo Eye Receiver (RX)
(Red Indicator LED Light “On”)
Fig. 55
Photo Eye Transmitter (TX)
(Green Indicator LED Light On)
Photo Eye Transmitter (TX)
(Green Indicator LED Light “Flashes”)
To Terminal 2
To Terminal 1
Receiver red
indicator
Transmitter
green indicator
16. TEST SAFETY REVERSAL
The safety reversal function of your operator is an extremely
important feature of your operator. Testing this function ensures
the correct operation of your operator and door.
The reversal system test should be performed:
 Once per month.
 Anytime the travel or force limits are reset or changed.
Once the adjustments have been set and the door has been run
up and down twice to “learn” the new settings, you must test
the reversal system for proper operation.
 Place a 1-1/2" (40mm) high rigid object (or a 2x4 board laid flat)
on the floor directly in the path of the door. See Fig. 54.
 Start the door in the downward direction and watch what happens.
 When door contacts the object (or 2x4), it should stop,
reverse, and automatically return to the fully opened position.
 If the door does not reverse, reset the down travel limit
so that the door travels slightly further down in the closed
direction. Then, retest the unit as described above.
 If the door still does not reverse, disconnect your operator
and call a service person.
Fig. 54
1-1/2” (40mm) high rigid object
 Press and release the wall control button. The door should
not move in the down direction.
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.