Since i have a 9′ garage ceiling plus two 7′ door openings, when installing the doors i opted since an 8′ track to increase the tracks closer to the ceiling plus out of the work area. This channel the door has to go upright a foot before it starts back, so traditional openers won’t work. For 20 yrs. I’ve been manually operating the door while now and then looking since an opener solution. The Liftmaster 3800 was the door answer, plus the “laser parking assist” the spotting answer. (3″ bumper to door plus 3″ grille to workbench, no more court tennis ball from the ceiling)
It’s been in service a week plus works flawlessly. The quality of the operating unit, cable tension monitor, plus barrier appears very high. The resistance unit, remote, plus light a little fewer so but seem adequate since the job.(few moving parts). The instructions are obious plus complete. And it comes with sufficiently fasteners since most installations.
My installation was a little lengthly because i’m so picky. (ran a new outlet through the ceiling to get 4″ from the power unit, the square aid comes with 8′ of bell wire, needed 20′ – besides through the ceiling, the tension monitor needed a spacer block, cut one to fit plus painted to match the finished plus textured wall, plus so on) the barrier only needs a 1/2″ hole instead of 3/4″ if you can practice accurately. If i did it besides i wouldn’t install the barrier. The door is insulated plus very heavy, i don’t think schwarzenegger could raise it without the spring aid.
The only riddle i had ended upright being a broadcasting issue of my own making. After setting the open travel limit to the top of the chance – 7′, the door would open but not close. The guidance troubleshooting section indicated the trouble was the cable tension monitor. I outlook the one not the riddle since it’s roller was 2″ from the drum as recommended plus it was under tension with the door open plus closed. After 20 mins. Of reprogramming, checking connections plus rereading instructions, staring at the monitor when closing diagnosed the riddle. When the door starts down there is a jerk which slackens the cable since a fraction of a second allowing the tension monitor to close if the door is close to the top but not fully open. Reprogramming to 8′ pulls the cable away from the resistance a couple of inches so during the jerk the monitor movement is not sufficiently to close. An extra foot of door travel, but it works great!
For related article, please visit A significant solution because of a modified door installation.
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