Thread subject: Homeroasters - Home Roasting Coffee Community :: air roaster
Posted by dja on 11/28/2011 9:05 AM
#1
gonna have to drag the roaster out here is a day or two sure hope it warms up some, been kinda cool here in OKC with it being only 28 degrees this morning. Makes a guy wish he'd built himself a toy shed you know what I mean.
Well its getting pretty close to time to roast some beans for the swap, I sure hope my roaster don't let me down in this cold weather.
David
Posted by seedlings on 11/28/2011 4:58 PM
#2
When it's super cold I start the roast in the (one car basement) garage with the door closed until I get close to 300F bean temp... then open the door. If the temp is too much of a problem I'll shoot a heatgun at the inlet.
CHAD
Posted by dja on 11/28/2011 7:08 PM
#3
dang Chad it must be nice to have a nice warm garage to park in, I guess I could put in an overhead door on the slab then I could pretend like I got a garage, open the door and pull up onto the slab, but then I would have to go buy a heat gun.
Why you have to add the gun heat, I got the same coils as you and I can get hot enough to roast in cold weather.
Edited by dja on 11/28/2011 7:09 PM
Posted by seedlings on 11/29/2011 10:14 AM
#4
Quote
dja wrote:
Why you have to add the gun heat, I got the same coils as you and I can get hot enough to roast in cold weather.
Yeah, it will roast, but when it's cold it won't let me go as fast as I want during some segments of the roast so I throw in some extra heat (this is also the advantage of Kirby's all metal construction with heatslinger for keeping the motor cool). Hey... I thought you were complaining about roasting in cold weather? So it must be YOU that's cold and not the roaster! Having a little fun David!
CHAD
Posted by dja on 11/29/2011 10:41 AM
#5
Naw, I got cloths keep me warm. I just wanted to know why you had to add the extra heat.
not the cold that I mind roasting in, its standing out there in the darnn SNOW.
Yahoo! I think you're ready to start building! Let me know if u need a bigger blower. -Scott
Posted by dja on 11/29/2011 12:08 PM
#9
what we gonna build?
Posted by JETROASTER on 11/29/2011 12:53 PM
#10
I think you need a nice #2 propane, all season bean-blaster.
Let me know when you're ready! -Scott
Posted by dja on 11/29/2011 2:16 PM
#11
let me see what you got, I got lots of time on my hands, with only one major project between me and insanity
Posted by dja on 02/23/2012 9:13 PM
#12
well I knew it would happen just never knew when. Roasted up some of the
rawanda that I had received from Chad in the last buy, well when I pulled the beans I removed the thermal couple from the bean hopper and turned off the blower and guess what, I left the heating elements on and had a total melt down like a reactor on steroids. So now I get to find a relay that will handle the load of the coils and wire it in so that when the fan is off the coils are dead.
Posted by oldgearhead on 02/24/2012 8:14 AM
#13
...and that would be a rather large contactor..Instead of a large relay,
you might be able to do what I did: Power the temp controller, that supplies the DC voltage to the SSR from the fan circuit. . .
Posted by dja on 02/24/2012 11:45 AM
#14
yea I can do that or run the SSR controling voltage thru the fan circuit somohow
Posted by greencardigan on 02/26/2012 5:15 AM
#15
Quote
dja wrote:
yea I can do that or run the SSR controling voltage thru the fan circuit somohow
In the roaster I'm currently building I will use a DPDT switch to cut off the power to the element circuit whenever I cut power to the blower.
Posted by dja on 03/14/2012 10:02 AM
#16
Ok I finally was able to take the time and fix my roaster after melting the heating coils out of it, on my first roast of the Rawanda that I got from Chad on the last group buy.
anyway heres a picture of what I pulled out of the roaster
Not very pretty, the other side is worse, but only have the one photo.
but thankfully the roaster lives to roast again and hopefully I'll remember to turn the coils off, price of coils has went up some since I bought the last two when building the monster(roaster)
Edited by dja on 03/14/2012 10:04 AM
Posted by Lawnmowerman on 03/15/2012 12:57 AM
#17
A relay to handle the power to the heaters? Have you considered an electric toaster? I was cleaning mine a few months ago and i discovered all kinds of neat little safety interlocks built into it. They all have to be engaged to keep the heater on. There is a small relay,2 chips, 5 transistors if i remember correctly, the relay is actuated when you depress the lever and it energizes a solenoid whlch holds the toast down. This solenoid also holds closed the 2 contacts which deliver power to the heater.
Posted by seedlings on 03/15/2012 1:29 PM
#18
David! I had to idiot-proof mine in order to accommodate my hap-hazard-ness. I can't turn the heat on unless the blower is on. Should be a pretty easy fix no matter how yours is wired.
CHAD
Posted by dja on 03/15/2012 3:58 PM
#19
yea I know, my stupidity is what did it, that and old age guess I could take one of the old pressure switches that I have off an asphalt plant and plumb it in so that they coils won't work unless the switch is made, but then things are so big. guess I'll have to find an easier way
Edited by dja on 03/15/2012 4:01 PM
Posted by oldgearhead on 03/16/2012 11:45 AM
#20
..as an extra precaution I don't plug it in unless I'm roasting,
but the SSR receives no switch power unless the blow circuit is on.
Of course a pressure switch is the very best protection and all commercial
grain dryer application have them.
Having a little fun David!
guess I could take one of the old pressure switches that I have off an asphalt plant and plumb it in so that they coils won't work unless the switch is made, but then things are so big. guess I'll have to find an easier way