Since i have a 9′ garage ceiling then two 7′ door openings, when installing the doors i opted because of an 8′ track to grow the tracks closer to the ceiling then out of the work area. This medium the door has to go increase a foot before it starts back, so traditional openers won’t work. For 20 yrs. I’ve been manually operating the door while occasionally looking because of an opener solution. The Liftmaster 3800 was the door answer, then the “laser parking assist” the spotting answer. (3″ bumper to door then 3″ grate to workbench, no more tennis ball from the ceiling)
It’s been in service a week then works flawlessly. The quality of the operating unit, cable tension monitor, then fasten appears very high. The wall unit, remote, then light a little fewer so but seem adequate because of the job.(few moving parts). The instructions are unclouded then complete. And it comes with sufficient fasteners because of 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 lot aid comes with 8′ of bell wire, needed 20′ – once more through the ceiling, the tension monitor needed a spacer block, cut one to fit then painted to match the finished then textured wall, then so on) the fasten sole needs a 1/2″ hole instead of 3/4″ if you can rehearsal accurately. If i did it once more i wouldn’t install the fasten. The door is insulated then very heavy, i don’t think schwarzenegger could elevator it without the spring aid.
The sole riddle i had ended increase being a programming issue of my own making. After setting the open travel limit to the top of the beginning – 7′, the door would open but no, non- close. The advice troubleshooting section indicated the trouble was the cable tension monitor. I philosophy this no, non- the riddle since it’s roller was 2″ from the drum as recommended then it was under tension with the door open then closed. After 20 mins. Of reprogramming, checking connections then rereading instructions, staring at the monitor when closing diagnosed the riddle. When the door starts down there is a jerk which slackens the cable because of a fraction of a second allowing the tension monitor to close if the door is close to the top but no, non- fully open. Reprogramming to 8′ pulls the cable away from the wall a couple of inches so during the jerk the monitor movement is no, non- sufficient to close. An extra foot of door travel, but it works great!
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