HomeRoast Digest


Topic: Thanks to Chris (5 msgs / 167 lines)
1) From: Gary Zimmerman
Thanks to the gracious help of EuropaChris Beck, tonight I had my first 
successful roast from my parents' old Wearever Popcorn Pumper (1400 watt 
version).
Yesterday I tried to bypass the thermostat, since two previous attempts 
ended badly when the thermostat shut off the popper just as the beans 
entered first crack.  After doing the bypass, I tried again 
yesterday...with the same horrible result, ruining a batch of Harrar.
I described to Chris exactly what I did, and he informed me that I hadn't 
bypassed the thermostat at all - I likely bypassed the thermal cutoff for 
the motor!  Oops.  This is why naive newbies like me probably shouldn't try 
this at home without knowing what we're doing.  I'm glad I didn't mess up 
the machine or myself.
After bypassing the RIGHT component today, I tried again with some Ugandan 
Budariri, and it worked great!  I poured in enough beans so they were just 
barely moving in the air stream.  I used a wooden spoon handle to agitate 
the beans for about a minute, until the water-weight loss alowed them to 
dance in the air by themselves. (It was a little less than a cup volume of 
beans.)  Then I replaced the clear hood that came with the popper.
I could hear first crack well (started at around 7 minutes, and got going 
pretty well around 8), then a pause, and I even heard hints of second crack 
at around 11 minutes.  The beans look good and smell good, and I'll try 
them tomorrow.
I'm anxious to compare results from the air popper versus my usual 
WhirleyPopper.  Maybe I can get my parents to let me borrow the thing for 
awhile, since I believe they usually make microwave popcorn these days.
Anyway, a long note to say thanks again to Chris.  Can't wait to try the 
coffee tomorrow morning!
-- garyZ
Whirley-drip(paper)-black
& PopcornPumper?
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2) From: europachris
Glad it works well for you, Gary!  You may want to try preheating the popper for a few minutes first, too.  It sounds like you have one with the 0.8 amp motor as they roast pretty slow due to the huge airflow.  I'll have to try mine with the 0.68 amp motor and see if it roasts faster.  It should as same heat input with less air = hotter air = faster roast.  I'll bet they went to the smaller motor after they found out it took too long to get a batch of popcorn popping.
Chris
Gary Zimmerman  wrote:
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3) From: Chris Peters
Gary or Chris:
I also have my parents' old 1400 watt Wearever Popcorn Pumper (0.68 amp
motor).  I'm preparing for my first roast this weekend.  It sounds like I'll
need to bypass the thermostat to make this unit work and I'd like to avoid
Gary's bypass problems.  Could you explain what I need to do to bypass the
thermostat in layman's terms.  I'm not an accomplished electrician by any
means.
Thanks,
Another Chris

4) From: europachris
Basically, you pull out the roasting guts from the white top half.  Look on top of the roast chamber and you'll see a black cylindrical thermostat.  It will have two wires running into it.  Unplug those two wires, cut the terminals off, strip each back about 3/8", and twist together with a proper sized (fairly small) wire nut.  Reassemble popper.  Done.
Also, plug the hole in the butter dish area with a small wad of alu. foil.  It blows hot air into the butter dish while it's running.  Don't need that to roast coffee, so plug it up.  Just be careful not to stick the foil too far in there or you'll hit the heating element (bad).
Chris
"Chris Peters"  wrote:
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5) From: Tom & Maria
I too have used MY mother's very old first-generation Popcorn Pumper 
(this one has the cast aluminum butter dish and on-off switch on the 
front. Its a great roaster, and lucky for me I didnt have to mess 
with bypassing the thermostat -the heat stays on through second crack 
and beyond that to places I never go!
Tom
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                   "Great coffee comes from tiny roasters"
            Sweet Maria's Home Coffee Roasting  -  Tom & Maria
                   9 E. 2nd Avenue Columbus OH 43201
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