Model 2000.05, from maybe 1984.

I push the button on the wall or the remote and the motor starts 
opening or closing but stops dead in about a second.

I know, I know, the safety/reverse switch. Turned the adjustment all
the way to "insensitive", no help. I removed and cleaned the "safety"
switch, no help. Also tried removing one or both of the elec.
connectors to switch: same result.

I can't figger how the door-stop mechanism works. Push the button, 
it starts: what stops it and how (when it's working correctly)?

Anybody familiar with these things? If it's the safety switch, I
need to disable it or similar.

  Thanks,
  Willie

Willie The Wimp wrote:
...

> I can't figger how the door-stop mechanism works. Push the button, 
> it starts: what stops it and how (when it's working correctly)?
...

Limit switches -- there's a contact on each direction; probably on a 
threaded rod that rotates as opens/closes to move the actuator.

--

JIC it's not the opener... You didn't mention the type of door it opens, but 
you have checked all points to eliminate the possibility of the door 
binding, right?

Unc 

Willie The Wimp wrote:

> Model 2000.05, from maybe 1984.
> 
> I push the button on the wall or the remote and the motor starts 
> opening or closing but stops dead in about a second.
> 
> I know, I know, the safety/reverse switch. Turned the adjustment all
> the way to "insensitive", no help. I removed and cleaned the "safety"
> switch, no help. Also tried removing one or both of the elec.
> connectors to switch: same result.
> 
> I can't figger how the door-stop mechanism works. Push the button, 
> it starts: what stops it and how (when it's working correctly)?
> 
> Anybody familiar with these things? If it's the safety switch, I
> need to disable it or similar.

Does it have an overload/overheat switch? Perhaps the door is not moving 
freely enough and puts a heavy load on the mechanism.

Disabling the safety switch would not be the smart thing to do.

Perce

"Willie The Wimp" <C...@screwmail.com> wrote in message 
news:6...@4ax.com...
>
> Model 2000.05, from maybe 1984.
>
> I push the button on the wall or the remote and the motor starts
> opening or closing but stops dead in about a second.
>
> I know, I know, the safety/reverse switch. Turned the adjustment all
> the way to "insensitive", no help. I removed and cleaned the "safety"
> switch, no help. Also tried removing one or both of the elec.
> connectors to switch: same result.
>
> I can't figger how the door-stop mechanism works. Push the button,
> it starts: what stops it and how (when it's working correctly)?
>
> Anybody familiar with these things? If it's the safety switch, I
> need to disable it or similar.
>
>  Thanks,
>  Willie 

"Willie The Wimp" <C...@screwmail.com> wrote in message 
news:6...@4ax.com...
>
> Model 2000.05, from maybe 1984.
>
> I push the button on the wall or the remote and the motor starts
> opening or closing but stops dead in about a second.
>
> I know, I know, the safety/reverse switch. Turned the adjustment all
> the way to "insensitive", no help. I removed and cleaned the "safety"
> switch, no help. Also tried removing one or both of the elec.
> connectors to switch: same result.
>
> I can't figger how the door-stop mechanism works. Push the button,
> it starts: what stops it and how (when it's working correctly)?
>
> Anybody familiar with these things? If it's the safety switch, I
> need to disable it or similar.
>
>  Thanks,
>  Willie

If it's a chain drive, it has stops attached to the chain, one for open, one 
for close. Is it possible that the door is locked or otherwise stuck? 

On Sun, 22 Nov 2009 17:38:53 -0600, dpb <n...@non.net> wrote:

>Willie The Wimp wrote:
>...
>
>> I can't figger how the door-stop mechanism works. Push the button, 
>> it starts: what stops it and how (when it's working correctly)?
>...
>
>Limit switches -- there's a contact on each direction; probably on a 
>threaded rod that rotates as opens/closes to move the actuator.

You may well be right, but limits were properly set a long time ago,
so if that's it, it almost has to be a malfunction.

I will tinker.

  Thx,
  Willie

On Sun, 22 Nov 2009 15:38:55 -0800, "uncle K" <n...@all.com> wrote:

>JIC it's not the opener... You didn't mention the type of door it opens, but 
>you have checked all points to eliminate the possibility of the door 
>binding, right?
>
>Unc 

Pretty much. It's a standard steel door (1 bay wide), chain drive.
No serious binding, bowing, etc.

On Sun, 22 Nov 2009 19:01:28 -0500, "RBM" <r...@live.com> wrote:

>
>If it's a chain drive, it has stops attached to the chain, one for open, one 
>for close. Is it possible that the door is locked or otherwise stuck? 

No. Opener has been working fine for long, long time. Nothing visable
changed.

Willie The Wimp wrote:
> On Sun, 22 Nov 2009 17:38:53 -0600, dpb <n...@non.net> wrote:
> 
>> Willie The Wimp wrote:
>> ...
>>
>>> I can't figger how the door-stop mechanism works. Push the button, 
>>> it starts: what stops it and how (when it's working correctly)?
>> ...
>>
>> Limit switches -- there's a contact on each direction; probably on a 
>> threaded rod that rotates as opens/closes to move the actuator.
> 
> You may well be right, but limits were properly set a long time ago,
> so if that's it, it almost has to be a malfunction.
...

Well, you asked what stops up and down travel--I answered the ???

Clearly there's a malfunction of some sort; whether it's related to the 
limit switches or not I can't tell from here.

--