MAGGIOLINO 100-400 gram roaster

[wongie]

Hi Wongie,

I'm too have the MAGGIOLINO.
I'm really interesting about mounting a probe for bean mass temp but I could not find the place to drill the hole for the probe in such a way that it will be place into the bean and will not be damaged from the inside metal pieces inside the drum. Did you put it in the front or in the back of the machine? I will appreciate if you can take couple of photos and upload them to share it with us. Another issue that I find myself struggling with is the ventilation issue. I noticed that when I pull the cooling tray away so there is a little gap it cause a ventilation path and enable to outside air to enter to the drum and hot air to exit from the bean loading entrance. This cause to immediate ET raising but I'm not sure for the long run how it effect the drum temp and the bean temp. Did anybody experienced with ventilation and how it effect roasting in general and in specific in the Maggiolino

Thnaks

Hi Notato,

I have placed separate bean mass temp probe by drilling another hole in the front. Probe is exactly 42.5mm from centre axle of the drum. I have also placed temp readout on top of machine and use USB webcam to do datalogging of my roasts with Roastlogger app.
I have also added a heat control to control the heater output. This is a variac type device which controls voltage output to the heating element.

Hope this helps

Andrew

[Aaron4820]

Yes I should rephrase the last bit - the machine's coffee roasting abilities are usually very good. As for the zapping thing...

[MrJack]

Re: MAGGIOLINO 100-400 gram roaster

** Danger lurks within ** 240V Kills the unwary.

BUT

If your a bit handy then a few dozen electronic components based around a 555 timer to set up a PWM (Pulse width modulator) feeding into a relay like device called an SSR (Solid State Relay) will get you what you need. There is a heap of circuits around on the net for controlling of various heater elements and other similar loads but without sound knowledge this place without a very complete how to is not the place for it.

Surely, for that kind of money, the manufacturer could include/fit a ramp soak PID?

[Hildy]

] weirdly it gives him electric zaps. But it works well .

I would never touch a non-plugpack device that did this.

(you can get zaps from transformer-isolated device as they ground themselves through you but they shouldn't have enough energy to actually do damage. an unisolated device like a roaster, otoh, should never zap you and is intrinsically unsafe if it does.)

[Aaron4820]

Hi...newish to this forum but have used this roaster many times before. About 4 years ago, one of my mates sent me an email stating that he had bought a Coffee Tech Maggiolino from an online company in NZ. So we got together for a roasting session and we hang out fairly regularly for roasting sessions.

It's an excellent machine. Essentially the heating is binary - either ON 100% or OFF 100%. i.e. if you set say 170 degrees on the Omron control panel, it will get to that temp then switch off, then climb back up (on) reach that temp then switch off again.

My mate and I have found it lends itself to experimentation too. One day, we were talking about something or other and hadn't noticed that the beans had been "soaking" in 70 degree not 170 degree for some 4 or 5 minutes. We thought this would be a disaster but interestingly four days later, what emerged was a wonderfully balanced coffee (its variety alludes me) with lovely fruitiness.

As notato alluded to above, if you want to slow the roast down having already downed the temp on the panel, simply pull the cooling tray out a distance for a certain time period. Be careful though. It is very effective at slowing the roast down and you may stall a roast if you pull it out for too long (only about 30 seconds was enough to stall a roast I did on this).

My mate (the crazy bloke who bought the machine ($4200+postage+GST=$4700) goes through 1kg per week with his wife. It's an awkward design weighing about 35kg and weirdly it gives him electric zaps. But it works well and the end results are usually very good.

Cheers.

[notato]

Hi Wongie,

I'm too have the MAGGIOLINO.
I'm really interesting about mounting a probe for bean mass temp but I could not find the place to drill the hole for the probe in such a way that it will be place into the bean and will not be damaged from the inside metal pieces inside the drum. Did you put it in the front or in the back of the machine? I will appreciate if you can take couple of photos and upload them to share it with us. Another issue that I find myself struggling with is the ventilation issue. I noticed that when I pull the cooling tray away so there is a little gap it cause a ventilation path and enable to outside air to enter to the drum and hot air to exit from the bean loading entrance. This cause to immediate ET raising but I'm not sure for the long run how it effect the drum temp and the bean temp. Did anybody experienced with ventilation and how it effect roasting in general and in specific in the Maggiolino

Thnaks

[beanflying]

** Danger lurks within ** 240V Kills the unwary.

BUT

If your a bit handy then a few dozen electronic components based around a 555 timer to set up a PWM (Pulse width modulator) feeding into a relay like device called an SSR (Solid State Relay) will get you what you need. There is a heap of circuits around on the net for controlling of various heater elements and other similar loads but without sound knowledge this place without a very complete how to is not the place for it.

[wongie]

Hi Logga,

I have recently purchased a Maggiolino roaster. Having done a few roasts I feel the need to control the heater element rather than simply on/off. Did you manage to fit a control of some sort to the heating element?
I think it would be a very useful to control the heat a little, maybe back it off a bit as it nears first crack to lengthen the roast a bit. Even with 300gm batches the roast can run away a bit if the heat is not turned off early enough. With heating element on continuously from the start I find that the initial ramp up in temp is a bit steep so having control of the heating element may flatten it a bit. Problem with turning element on and off is that the hysteresis of the whole system seems too long.
I have been monitoring bean temp with another probe placed into the rotating bean mass.
What are your thoughts?
If you have managed to put a control on the heater element I would be interested to see how you have achieved this.

Thanks

[Logga]

Re: MAGGIOLINO 100-400 gram roaster

Hi Razzo, I have bought one as well and yes they are a great roaster. I find the temperature controller a bit hard to use because it only gives you a set degree to reach then turns off and then you have to push the degree up again and away it goes. I try to let it coast along when it turns the element off using the heat in the drum and then turn it up so it comes on so the temperature doesn’t drop but its to hard and some times the temperature drops. Im going to put a new control on it some thing like an element control on a stove then I will be able to slow things down and it won’t turn off. Some thing like that, see what happens.

[Razzo]

Re: MAGGIOLINO 100-400 gram roaster

I bought one of these secondhand about 9mths ago. They are a great machine for a serious user and can easily replicate a great roast similar to a production roaster. A bit of and overkill for the home roaster mainly because of the cost and setup but perfect in a roastery for sample roasting. Best results are for about 250-300g of green beans, more than that it tends to loose too much heat in the drum. They retail for NZ$5000 here but I managed to fine one for NZ$1600. Will never sell it.

[Logga]

Re: MAGGIOLINO 100-400 gram roaster

Thanks for that.
What would be the next step from a hottop?

[beanflying]

Re: MAGGIOLINO 100-400 gram roaster

Some details here http://www.coffeeroasters.com.au/pdf...ility%20Mo.pdf

Price will be exe at $4-6k most likely

[Logga]

Hi there, I was wondering if any one has one of these roasters and if they are any good or just any thing about it.

Cheers

Grant