12
Garage Door Operator Maintenance
Weather conditions may affect the door operation which could require some re-setting of the operator’s adjustments. Doors may swell and become
heavier during wet periods, door hinges and rollers might bind during cold periods. To insure safe operation of the door, perform the following tests,
including any additional test steps described.
Aligning the Infrared Safety Beam
The safety beam has two components, a sender and a receiver. The sender produces a narrow infrared beam that travels across the bottom
of the door opening to the infrared receiver. If an object blocks the infrared beam while the door is closing, the door will stop, then reverse and
fully open (the operator’s light will ash three times). As a safety feature, the operator will not attempt to close if the door is open and the
infrared safety beam is blocked or out of alignment. In this case, the door can be forced closed by pressing and holding the wall station
pushbutton (be sure the door area is in clear view).
WARNING
With the door closed, disengage the trolley from the
chain or belt during these alignment tests by pulling
the red release handle.
WARNING
Serious injury or death from a closing garage door may result because of
failure to test and adjust safety reverse system. Repeat this test monthly and
adjust as needed.
Safety Beam
a) Check that the operator has power. The green lights on the sender and receiver
should be lit.
RED LIGHT
GREEN LIGHT
b) If the receiver’s green light is on (but the red light is off) the receiver has power,
but it’s not detecting the infrared beam from the sender. The red light might
ash when the beam is partially detected. This can be caused by misalignment
or something blocking the beam. Adjust the safety beam sender and receiver
while watching the receiver’s red light (stay out of the beam while aligning it).
c) When the red light stays on, rotate the sender towards the ceiling and stop when
the red light on the receiver begins to icker.
d) Rotate the sender back towards a horizontal position with the oor and stop
as soon as the red light on the receiver lights solid. The beam is now properly
aligned.
SAFETY BEAM INDICATOR TABLE
GREEN ON POWER ON
GREEN OFF POWER OFF
RED ON BEAM OK - NO BLOCKAGE
RED OFF
BEAM BLOCKED OR MIS-
ALIGNED
RED FLASHING BEAM ALIGNED POORLY
NOTE: If the receiver’s red light remains off, check for: 1) Dirt on the
receiver’s lens, 2) Sunlight shining into the receiver’s lens, 3) A short in
the safety beam wiring (from staples or at the operator terminals).
d
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