[Homeroast] Using a Variac to control a GeneCafe

Edward Bourgeois edbourgeois at gmail.com
Wed Aug 17 09:25:20 CDT 2011

Be sure your variac is rated for enough amps watts for the Gene's rating.

On Wed, Aug 17, 2011 at 10:15 AM, Edward Bourgeois
<edbourgeois at gmail.com> wrote:
> If you set it on 120v 100% you will get the full line voltage. If your
> variac doesn't have a meter you will need a Kill-A-Watt meter($20+-)
> to plug into the variac output and the Gene into the KAW.  If your
> line plus demand pulls your voltage down below 120v you will need to
> set on 140v and adjust. up until you get to your desired voltage.  A
> varic doesn't hold the voltage steady. Line or demand  fluctuations
> will require adjustments along the roast. Be aware that the display on
> a KAW meter will not light up when the voltage applied is below around
> 93 or so volts. Start low and adjust up and once you hit above that
> your display will appear and continue til you get where you want.
> On Wed, Aug 17, 2011 at 8:30 AM, Ken Knott <esprcorn at hotmail.com> wrote:
>> I have access to Variac's so I thought I might give them a shot to control my Gene CAfe.  I understand that power fluctuations at the outlet are common and can make a significant difference in controlling your roast profile's conistency.
>> So...  My Variac's can be set to 120V or 140V.  I imagine I would want to use 120V.
>> Second questions.  From there, I can set my Variac from 0 to 100%.  As wall outlet are supposed to provide 120V, am I correct in that I would set it to 100% and then plug in the old GeneCafe?  I'd rather not fry my GeneCafe if possible...  :)
>> Thanks in advance,
>> Ken
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> --
> Ed Bourgeois aka farmroast
> Amherst MA.
> http://coffee-roasting.blogspot.com/

Ed Bourgeois aka farmroast
Amherst MA.

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