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Just installed Liftmaster 3800

Chris Adams

Well-known member
Joined
Oct 21, 2007
Messages
2,117
Just installed my Liftmaster 3800. Finally. I wasn't really in a hurry till my wife announced today that it was time to find a different automatic door opener. I had been using her...

It is an easy install for anyone contemplating putting one in.
I made it twice as much work by having mounted a tall heavy nuts and bolts rack too close to the rail to fit the electronic lock. So I had to take an hour to reposition the rack.
The directions are a bit goofy in that 1. They expect you to have an assistant, or to install it out of series. They want you to press a button on the opener itself, and almost simultaneously press a button on the wall mounted switch, in my case 15 feet away.
Or you could have jumped ahead and programed a remote, which they tell you not to do in advance. In my case I borrowed some assistance for about thirty seconds. If you don't have any help, program a remote as soon as you have the wiring all in.

2. If you have never wired a door eye you may not know that the wires on each side join together before going on into the opener. They left that out of the instructions so you have four wires going to two wires with no mention of joining them. Not a problem if you have ever installed an eye system for a garage door, but a big problem if you haven't.
I have installed a couple, but in reading the instructions I noticed that omission.

3. In installing the wire tension device, the picture shows it being installed on one side of the rail. To do that you would have to cut the rail, not a good idea. No problem installing it on the other side of the rail, easier in fact, but just different from the directions.

4. The instructions said the tension device was 'pre-set' for left side. Maybe my left and right are confused but it wasn't. Sealed box. Not a problem. I switched, then switched it back. Ten second job.


After getting it installed my first impression is that it is great. Quiet, smooth, not super fast but very adequate.
An easy installation with no need for any special tools or even an assistant (except for the silly switching thing).
I've had tape openers, chain openers and screw openers. Hated the tape, it broke, slipped, had problems. Chains like to drip oil on your floor, head, car. Screw is the smoothest of those three, and by far the most reliable.
The jackshaft is smoother than the screw type, and hopefully will be as reliable.

I really like the electronic lock, the main reason I went with the 3800. Easy to install, works like a charm.

Only thing I am a little concerned about is the bracket to hold the opener body is only on one side. I would really prefer two sides bracketed.
 
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kvom

Well-known member
Joined
Feb 1, 2008
Messages
820
Location
*******, GA
I installed two of them myself. I found it much easier/faster to string all the wires (door control, electric eyes, lock, tension sensor) first so that I could make all of the connections on one trip up the ladder. For me, the remote worked right out of the box for the adjustments.
 

larryv

Well-known member
Joined
May 1, 2005
Messages
456
Location
Ca.
Chris Adams, thanks for the writeup. I hope to install mine in about 3 weeks, just waiting for the new home to close. Again, Great info.
 
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ovilla

Well-known member
Joined
Dec 18, 2005
Messages
2,342
Location
Plainfield, IL
Just installed my Liftmaster 3800. Finally. I wasn't really in a hurry till my wife announced today that it was time to find a different automatic door opener. I had been using her...

It is an easy install for anyone contemplating putting one in.
I made it twice as much work by having mounted a tall heavy nuts and bolts rack too close to the rail to fit the electronic lock. So I had to take an hour to reposition the rack.
The directions are a bit goofy in that 1. They expect you to have an assistant, or to install it out of series. They want you to press a button on the opener itself, and almost simultaneously press a button on the wall mounted switch, in my case 15 feet away.
Or you could have jumped ahead and programed a remote, which they tell you not to do in advance. In my case I borrowed some assistance for about thirty seconds. If you don't have any help, program a remote as soon as you have the wiring all in.

2. If you have never wired a door eye you may not know that the wires on each side join together before going on into the opener. They left that out of the instructions so you have four wires going to two wires with no mention of joining them. Not a problem if you have ever installed an eye system for a garage door, but a big problem if you haven't.
I have installed a couple, but in reading the instructions I noticed that omission.

3. In installing the wire tension device, the picture shows it being installed on one side of the rail. To do that you would have to cut the rail, not a good idea. No problem installing it on the other side of the rail, easier in fact, but just different from the directions.

4. The instructions said the tension device was 'pre-set' for left side. Maybe my left and right are confused but it wasn't. Sealed box. Not a problem. I switched, then switched it back. Ten second job.


After getting it installed my first impression is that it is great. Quiet, smooth, not super fast but very adequate.
An easy installation with no need for any special tools or even an assistant (except for the silly switching thing).
I've had tape openers, chain openers and screw openers. Hated the tape, it broke, slipped, had problems. Chains like to drip oil on your floor, head, car. Screw is the smoothest of those three, and by far the most reliable.
The jackshaft is smoother than the screw type, and hopefully will be as reliable.

I really like the electronic lock, the main reason I went with the 3800. Easy to install, works like a charm.

Only thing I am a little concerned about is the bracket to hold the opener body is only on one side. I would really prefer two sides bracketed.

I'd highly recommend ordering a 10 key pad for outside as well as a back up battery too. The 10 key pad allows for temp codes for friends, and also allows you to close the door by just hitting the enter key. You will of course need a code to open the door. By the way, it has a cool red color when it's lit up. Finally, the back up battery comes with two flanges so all you need is a couple of lag screws to fasten it to the wall. Depending on how often you open/close your door, you should be able to go a few days on just the power from your battery.

NOTE: For those that have a car with homelink. The only way I've been able to get them programmed to operate the Liftmaster 3800 is to program the homelink to a remote and not directly to the opener.
 
OP
C

Chris Adams

Well-known member
Joined
Oct 21, 2007
Messages
2,117
Where did you get your's?

E bay.

Cheaper than local by about 75 bucks. That's 75 bucks difference after I mentioned I was going to buy it on E-bay. He wanted 125 more at first.
He wanted 150 to install it.
It took a couple hours, and that's for a guy working on a cane with one hand. And taking my time, it was late at night.
 
OP
C

Chris Adams

Well-known member
Joined
Oct 21, 2007
Messages
2,117
I'd highly recommend ordering a 10 key pad for outside as well as a back up battery too. The 10 key pad allows for temp codes for friends, and also allows you to close the door by just hitting the enter key. You will of course need a code to open the door. By the way, it has a cool red color when it's lit up. Finally, the back up battery comes with two flanges so all you need is a couple of lag screws to fasten it to the wall. Depending on how often you open/close your door, you should be able to go a few days on just the power from your battery.

NOTE: For those that have a car with homelink. The only way I've been able to get them programmed to operate the Liftmaster 3800 is to program the homelink to a remote and not directly to the opener.


Keypad doesn't really make sense for my application. This one is in my back shop.
You have to open two power gates and drive past the house to get to it.

Can't imagine letting anyone have three remotes (I use Homelinks in all the cars) to get into my shop.

With insurance and California law the way it is, I would NEVER let anyone have access to my shop without me being there. Period.
Still, if you live other places sounds like a good idea.
And I admit wanting the keyless pad just for the cool factor...

Don't quite know what you mean on the Homelink. You normally program a Homelink by using a working remote, not directly to the device. First you train it to the remote, then you train the opener. Or am I missing something?
 

momswgn

Well-known member
Joined
Sep 14, 2009
Messages
65
Location
El Paso, TX
Installed mine with the battery back-up as I do not have access to the garage in the event of a power failure. Installed the remote power point as I did not want to put an outlet close to the motor. Also installed the finger print remote pad. Had no problems with the light either. They have a lot of nifty options with the 3800.
 
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