[Homeroast] Rebooting for roasting

Rich rich-mail at octoxol.com
Sat May 1 12:54:30 CDT 2010


Its not the heating lamps thats the problem.  Its the drum motor and the 
electronics board.  The early motors died from having the gearbox 
lubricant baked out of it.

Yakster wrote:
> I guess I like to error on the side of caution.  I've rebuilt many heat guns
> years ago from people not running the cooling cycle in them and looked at a
> lot of failure analysis reports on electronic equipment where heat is the
> contributing factor for early failures.
> 
> The roaster wasn't built for continuous duty cycle so the decision is up to
> the user.
> 
> -Chris
> 
> On Sat, May 1, 2010 at 5:49 AM, Jim Gundlach <pecanjim at bellsouth.net> wrote:
> 
>> Actually, you don't have to take the Behmor apart to see how hot the
>> heating elements are.  The the heat resistant transparent covering is
>> reachable.  If you hold a finger close to it you can tell if it is cool
>> enough to touch and then you can go ahead and touch it knowing it is not hot
>> enough to burn your finger.  After a cooling cycle the heating elements
>> might be just a little warmer than their shields but not enough to have an
>> impact on the life expectancy of the heating elements.  If you can stand
>> touching the heating element shields, I can see no way that the residual
>> heat would have an impact on the life expectancy of the heating elements.
>>  The residual heat might have a slight effect on the roasting process but
>> given that a thermostat shuts off the heat producing electricity at a set
>> temperature, it should be an effect that is no larger than the difference
>> between summer and winter roasting.
>>     In short, I am not going to spend any of my scarce remaining life time
>> waiting between roasts for the temperature of the heating elements to cool
>> an extra degree or two.
>>
>>    pecan jim
>>
>>
>>
>> On May 1, 2010, at 2:58 AM, Ira wrote:
>>
>>  At 12:52 AM 5/1/2010, you wrote:
>>>> As an engineering type with many years field computer experience if the
>>>> Behmor electronic cooling was designed to be "adequate" when cooled
>>>> between
>>>> roasts than yes indeed circumventing stated cooling between roasts could
>>>> cause spec'd circuit over heating and hence shorten it's electronic's
>>>> life
>>>> expectancy.
>>>>
>>> Yes, but have you ever taken apart the machine in question?  What you say
>>> would only be true if the electronics somehow retained the heat of the roast
>>> between roasts?  Maybe it does, but It doesn't look that way to me.
>>>
>>> Ira
>>>
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