[Homeroast] Puzzled by Quest

g paris p pchforever at gmail.com
Sun Apr 10 16:53:34 CDT 2011


just read thi post and all I could think of was flicking the gauge...

having an old jeep around or any other car with a temp/oil gauge
they need a flick of the fingers.

bet the gauge is gone by the wayside.

let us know,

ginny

On Sun, Mar 13, 2011 at 2:23 PM, Robert Bedwell <rlb at triad.rr.com> wrote:

> 10.4 amps,  1160 watts
>
>
> On Mar 13, 2011, at 4:32 PM, Edward Bourgeois wrote:
>
> > If you have  a Kill-A-Watt meter you can set it on watts and see
> > what's being drawn
> >
> > On Sun, Mar 13, 2011 at 4:05 PM, ricky carter <rickylc99 at gmail.com>
> wrote:
> >> pop the original dial gauge back in and see if it confirms temps.
> >>
> >>
> >>
> >> On Sun, Mar 13, 2011 at 3:16 PM, Josh Schwartz <veganjosh at gmail.com>
> wrote:
> >>
> >>> I think it must be that your temperature measurement is off somehow ---
> as
> >>> far as I understand, it's physically impossible that your coffee is
> >>> cracking
> >>> at anything near 290.
> >>>
> >>> On Sun, Mar 13, 2011 at 2:54 PM, Robert Bedwell <rlb at triad.rr.com>
> wrote:
> >>>
> >>>> I have had my Quest for about three months and have done about 30
> roasts
> >>> on
> >>>> it.  It has worked like a charm until the last three sessions and I
> have
> >>> no
> >>>> clue what is going on.
> >>>>
> >>>> I have Eric's thermocouple installed in two places and attached to an
> >>> Omega
> >>>> 806.  Plans are to connect it to my Mac for data logging after I
> become
> >>>> consistent with using it.
> >>>>
> >>>> The first indication of a problem was when it took so long to preheat
> >>> with
> >>>> the amps set at 10 and the fan at 4.5.  The ambient temperature was
> >>> around
> >>>> 55F in the garage so I assumed
> >>>> it was due the cooler temp.  Incidentally my Quest has an insulation
> >>>> blanket installed over the drum.   The last three sessions have
> required
> >>>> around 45 minutes to reach 400F which is the temp
> >>>> that I use to load the beans.  Prior to these roasts it has taken no
> more
> >>>> than 15-20 minutes.
> >>>>
> >>>> Today I roasted Quatemala Zumay Santa Elena del Jumay......thinking it
> >>> was
> >>>> the Ethiopian Sidama Bonka that was the source of the problem in the
> >>>> previous 5 roasts.   However the Quatemala mirrored
> >>>> the Bonko roasts.....only faster.
> >>>>
> >>>>
> >>>> After loading the beans at 400F the temperature drops to around 210
> and a
> >>>> minute later is back up to 220 with a environmental (ET) temp of
> around
> >>> 580.
> >>>>   With the AMP set at 8.5 and the Fan at 4.5 it is taking 9.5 minutes
> to
> >>>> reach 300F.  Unfortunately, and this is where I am stumped, the first
> >>> sign
> >>>> of first crack is at around 290 (not 390) and first crack is over by
> 11.5
> >>>> minutes at 320F.  The low point of ET is 534 and the high is 583.
> >>>>
> >>>> The above has occurred for the last five batches I have roasted.   I
> have
> >>>> checked the temperature recordings of the Omega to my Fluke using the
> >>>> thermocouples use on the Quest and compared them to temp readings
> >>>> I am getting on the Fluke.  They all read within a degree of each
> other.
> >>>>  Both the Fluke and the Omega are set for K type thermocouples and
> there
> >>> is
> >>>> not an offset on either one.  Both are set for fahrenheit recording.
> >>>>
> >>>> So, to say that I am puzzled is an understatement.
> >>>>
> >>>> I removed the drum about 15-20 roasts ago and cleaned it but it there
> was
> >>>> hardly anything that came off.  I have cleaned the thermocouples to
> make
> >>>> sure they weren't affecting the temps.
> >>>>
> >>>> To sum up;
> >>>>
> >>>> Last five roasts have required at least 45 minutes to heat up to the
> 400F
> >>>> bean load temperature with amps set at 10 and fan at 4.5
> >>>> Taking 9-1/2  minutes to hit 300F and 1C  has already started at
> around
> >>>> 290F
> >>>> !C is over at around 11-3/4 minutes at 325F
> >>>> Both probes used in the Quest have been checked with the FLuke I have
> and
> >>>> are very close to the same readings
> >>>> Probes have been cleaned
> >>>>
> >>>> _______________________________________________
> >>>> Homeroast mailing list
> >>>> Homeroast at lists.sweetmariascoffee.com
> >>>>
> >>>>
> >>>
> http://lists.sweetmariascoffee.com/mailman/listinfo/homeroast_lists.sweetmariascoffee.com
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> >>>>
> >>> _______________________________________________
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> >>>
> >>>
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> >>>
> >> _______________________________________________
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> >>
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> >>
> >
> >
> >
> > --
> > Ed Bourgeois aka farmroast
> > Amherst MA.
> > http://coffee-roasting.blogspot.com/
> >
> > _______________________________________________
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> >
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>
>
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