Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener
Hi, Check the optical sensors located on each side of the garage door opening, near the floor. Clean both of the lens and check to make sure that the indicators are both lit (left and right).
Now, with the door down, (you might have to unlatch the emergency release cord to do this) slowly open (raise) the door up and pay attention to any roller wheels that might be hanging up on the tracks or the joints in the door tracks, as you raise the door all the way open.
Now lower the door to the closed position and reset the emergency release lever back to the latch postion. With a aeresol spray can of dry silicone lubricant (WD40 will work in a pinch, but won't last nearly as long), spray ALL the wheel rollers and spindles/axles/shafts on the garage door AND all the hinges in the middle of the door too.
Check to see that all of the door tracks are fastened tightly against the walls around the garage door opening, as loose tracks can cause binding of the door as it goes up and down, causing the opener to malfunction.
Now you'll need to adjust the UP and DOWN limit controls to get the door working properly again.
Set the door UP and DOWN limit switches to the middle adjustment postions on the opener control and then, using the remote door opener and likely standing on a step ladder, out of the way of the garage door when opening and closing the door. You'll make small adjustments to the UP limit adjustment knob, using a small, flat bladed screwdriver, or by turning the knob, as the door is opening. When the door stops going up and reverses, let it go till it stops running and turn the UP limit up (one turn equals approximately 2" of door travel) and try the door again.
Keep doing this until you get the door to open all the way without stopping part way or reversing. Once you got this taken care of, you can then adjust the DOWN limit control doing the same procedure as described above. The difference here is that you want the door to close with the lowest force possible, so that any obstruction (bike, toy, foot, kid, etc.) causes the door to open up rather than continue closing when something is in the doorway opening.
Here's a link to your owners manual for your garage door opener, so you can print and review all safety issues and review the complete detailed instructions for adjusting your specific door opener, properly.
You should allow for a good 30-40 minutes to properly check all aspects of the door and track, and the lubrication of the guides, rollers, and hinges, etc., and the adjustment of the opener itself.
I hope you find this Very Helpful and best regards!
Posted on Nov 12, 2009
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Posted on Jan 02, 2017
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