Rogier Donker on thu 31 mar 05
Brad et al!
Before the advent of computer controls, the Dawson kiln sitter with limit
timer was/is one of the most reliable kiln shut off devices known to man.
The usual reason the little button won't stay put is that there is no time
on the timer....be sure there is, or else you can push the button all you
want , but nothing is gonna keep it where it belongs. OK! So that's not it
,in your case....
As you know during firing, moisture escapes from the kiln....sometimes
that moisture escapes around the KSTA because that big green, grey,yellow or
black washer has deteriorated and moisture goes straight into the "innards"
of the kiln sitter. One of the first things that gets attacked is that tiny
little "v" spring" that keeps the timer shut-off plate in position when the
little button is pushed. Any kind of rust on that little spring will
weaken it to the point that it will no longer do it's job....replace it! WD
40 once in a while wouldn't hurt, but don't use too much because WD40 will
attract dust and the resulting "goo" sometimes make things worse...
I have been "lurking" here for quite a few months now and have noticed that
there are a lot of basic and elementary questions being asked. This might be
an appropriate place to tell all of you about the manual that I wrote
especially for aspiring potters and class room teachers. You can read about
it on my web site.
Rogier Donker
See us on the web at http://www.donkerstudio.org
Louis Katz on thu 31 mar 05
When the contact block on the kiln sitter gets old or dust settles on
the contacts and creates arching the contact block heats up. This seems
to be enough to promote rust on the little spring as well.
Louis
On Mar 31, 2005, at 8:07 AM, Rogier Donker wrote:
> of the kiln sitter. One of the first things that gets attacked is that
> tiny
> little "v" spring" that keeps the timer shut-off plate in position
> when the
> little button is pushed. Any kind of rust on that little spring will
> weaken it to the point that it will no longer do it's job....replace
> it!
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