2014年2月13日星期四

How to Properly Inspect the Auto Reverse on Garage Doors

o    1
Open the garage door. Stand near the edge of the garage door, where the optical sensors are located. Do block the optical sensors.
o    2
Close the garage door, and step between the optical sensors to break the sensor connection as the door lowers. The garage door should immediately reverse when you walk under the garage door. If the garage door does not auto reverse, refer to your owner's manual and verify that the sensors are correctly connected to the power head. Contact the garage door manufacturer if the sensors are connected properly and do not function.
o    3
Open the garage door. Place the 2-by-4 on the garage floor, directly below the garage door, with the 4-inch-wide side of the board resting flat on the floor. Make sure the board does not interfere with the optical sensors that you checked in step 2.

o    4
Close the garage door. Begin counting seconds when the garage door touches the 2-by-4. If the garage door opener does not auto reverse within 2 seconds, open the garage door. Adjust the applied force sensor per the garage door manufacturer's instructions, reducing the amount of pressure required to reverse the door. Re-test the garage door. Continue the process until the garage door opener auto reverses within 2 seconds.
o    5
Remove the board from beneath the garage door. Close the garage door. While the garage door is closing, hold on to one of the door's braces. Try to keep the electric door from closing--this will test the applied-force sensor at a point other than closed. If you cannot make the door auto reverse before you lose your grip, lower the adjustment on the applied-force sensor.
o    6
Re-test the garage door. If the applied force sensor is set to low, the garage door will not seat properly. Adjust the applied force sensor as needed. Repeat steps 4 and 5, ensuring the sensor operates at a safe level.




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