Great stuff Pb. Nice roaster and an excellent looking result.
What were the batch sizes and times for your roasts?
Great stuff Pb. Nice roaster and an excellent looking result.
What were the batch sizes and times for your roasts?
Gotta love a new toy!
Java "" phile
Toys! I must have new toys!!!
I put a 1kg green batch of Peru Ceja de Selva in first go. I backed off the heat too early and too much and ran to 20 mins.
The 2nd batch was 1kg green Columbian roasted to about 10 secs past beginning of 2nd crack at 16 mins.
I dropped at 190C.
What are your tips Saoye? I've only just begun so what I'm doing isn't very useful to anyone yet.
Especially tips for going up to around 1.25 green so as to yield full kilo brown batches.
1.25kg don't be afraid to charge up to 240deg especially for hard beans. Your roaster will take a few more roasts to season I'd say after 10 roasts your roaster will be fully seasoned so until then nothing is really as it seems in terms of profiling.
Never just turn the machine off without allowing it to cool down under 100 deg or you will warp the barrel. I use the pid reading for my charge temp not bean temp. Hope that helps.
Sigh I had one of these sitting in sydney waiting to be picked up after a long wait from order day.........but had to let it be I sold as we have had to move to a rental property due to unforeseen circumstances....... I was really looking forward to using mine. Good luck pavoniboy subscribed to watch and learn as you go
Pavoni congratulations on your new roaster, impressive looking unit!! I'm sure you will have many hours of happy roasting and experimentation--enjoy!!!!
Sorry for your disappointment LukeMC.
I'm beginning to get the hang of the roaster and how it responds. Roasts are already improving. Getting good results in the cup already too. Today's roasts smelt amazing, the best yet.
I'm overcoming my fear of backing off too much too early that happened in the very first roast. With good momentum I can still back off a lot, quite a bit before 1st crack.
I've been too involved with learning, to be taking photos but will try to remember next weekend.
Thanks for the help Saoye. It's good to know about cooling the drum. I had been anyway as felt it would be good but didn't know how cool I needed to get it. I had been coming down to 60 to be safe.
I still haven't increased my batch sizes but am really starting to nail the profile I'm after on the 1kg green batches.
Just out of curiosity Saoye , what is your minimum recommended green bean batch the TJ067 can handle comfortably?
I'll try to remember to measure the drum tomorrow. With 1kg green it looks less than 1/4 full.
More roasting today. Loving it. Still improving every batch so far. Getting great results in the cup.
Pavoni did you buy from Juan or self import?
The drum is 25cm long on the inside dimension and 24cm internal diameter.
I bought mine from Juan.
Yup that's the same as my dimensions. 1.25 kg will be achievable. Bare in mind if you don't start with the right temp you will over stretch the roast.
Yeah still not ready for 1.25 as I realise there will be no leeway. I'll keep at 1kg until I feel I really understand my roaster and achieving the desired profile before I start pushing it.
I can see you have attached your data logger with your Tj 067 roaster . where did you put the probe and did you drill a hole or removed a screw to insert the probe. where can i get the data logger and can you give me an idea about the software you are using.
Any assistance will be helpful.
I removed the left bolt on the sight glass and found a thermocouple with the same thread and so used the existing hole.
I put my thermocouple through the thread of the left side of the sight glass - it's an M5 thread by memory.
The multimeter that the thermocouple connects to is available from Beanbay on this site.
The software is a free download from coffeesnobs. Search roast monitor software and you should find it. If not someone will point you to the link.
My roaster came pre-drilled with a thread in what appears to be the optimum place for a thermocouple, just above and slightly left of sight glass, then closed with a bolt in it. I just have to work out what the thread is though. I already had a M5 thermocouple which fits sight glass thread, but the other hole is bigger so it doesn't fit there.
The bigger hole could be for a 3/8" compression fitting.
Cooling your drum to 60° C is good, I wouldn't go higher. I've used 2 different
types of commercial roaster; a 20 kg cast iron drum and a 5 kg carbon steel drum.
Both manufacturers recommend cooling to <60°C.
Why do you feel the need to overload your drum? It's a 1kg roaster, loading it 25% more will make it
sluggish and /or force a high turn temp which may create other roast quality issues, as well as upset airflow parameters.
Most roasters have a sweet spot for load/performance relationship which is 75-90% of the rated capacity.
Chester's modded HGSR5 might prove to be an exception.
In a 1kg roaster there shouldn't be any reason why you couldn't go as low as 100gm but you will have to try it
and see what happens.
Last edited by chokkidog; 10th August 2014 at 11:42 PM.
Thanks for your everyone. I'm removing a screw from the left side on slight glass and inserting the probe in the toper 1 kg which is an M5 thread . Yes I can see multimeter from bean bay website. Thanks for your help let me see how I go with that .
The going higher is just to get 1kg brown out of her for convenience sake when roasting for others. I had read prior to buying that most 1kg roasters are really only 800g roasters, however this one is easily a true 1kg and even larger loads can work fine.
I'm having no problems getting a good profile with 1kg in winter.
To all the CCR/TJ-67 owners here in Oz.
I have been having issues with power in running mine in the garage for the past 3 years, roasting 2 lots on average once a fortnight.
Without going into too much detail, it has been tripping out initially on the odd occasions, slowly increasing over the last 12 months.
I have been using a 15amp plug (that my sparky said should be okay as it is on a separate supply to the house and the plug has shown no sign of overheating during use).
About 8 months ago the variable speed on the drum stopped working, but as the set speed was suitable to my requirements, I didn't pursue the fault.
Six weeks ago it tripped out (roaster and the garage) within a minute of turning on the "Bake" button.
On investigation I saw that the speed control unit was looking heat affected, ordered a replacement and after installing, the power immediately tripped when I switched on at the control panel. I reset all the power and this time it tripped just turning on at the power point with a louder bang!
Rang the sparky.
Sorry, this has got a bit long winded.
Why I am posting this is because my electrician discovered that there was no earth connection to the roaster at all!
First discovered that the earth wire was not connected at the plug, then on further inspection also not on the body of the roaster. (Wire cut short and not visible).
So, to the above listed owners; have you, or can you check your roaster's earth connections, both for my info and yours?
I am well out of the warranty period and am now sourcing a new relay to replace the one (possibly) burnt out because of the no earth sitution.
Your Sparky should be able to source a replacement item and fit it for you without problems...
I am really surprised that in the first instance, your sparky didn't fully inspect and test your new roaster before it was connected to the Mains - Required by law for significant safety reasons. Also, having no Earth connected and the peculiar tripping regime you've been experiencing, would warrant a thorough inspection and test before it is connected to the Mains again. There is likely to be other wiring issues that caused this pretty weird carry-on...
Unfortunately, or fortunately for me now, I was just recently recommended this "sparky" by a fellow commercial roaster friend that uses him to do the trouble-shooting.
This guy was very thorough in the fault-finding so far and yes, he did pick up a few less than 'optimal' wiring connections.
"In the first instance" though, the roaster was delivered and plugged in by the seller, with the assurance that the environment (garage) supply should be suffice.
It has taken just over 3 years of low usage for the tripping issue to escalate. It all worked fine for the first 18 months or so.
I am just curios to know how the other buyers of the CCR have faired, because it appears to me now that this (no earth) is a deliberate factory set up because when the seller fitted the 15amp plug on install, he didn't connect the earth pin wire.
BTW, I have given feedback on this to the seller because he is chasing the replacement parts.
How has this gone? Any further developments?
Did you source this roaster from John - enerpat in NSW as he says he no longer supplies electric 1kg roasters, just the gas type.
Still "under construction" mate.
My electrician is dropping in tomorrow to get the details for him to source a replacement relay.
Yes, John's the supplier whom I have chased up spares, but a lot of water has run under the bridge since and on Mal's advice here, I'm using my local sparky to chase one up.
It seems now with the age of the TJ that John's "factory" no longer use some components fitted to this roaster and now use a different supplier components, hence the delay?
Apparently John is in China at the moment and has apologised for his lack of communication due to poor internet where he is??
So it's a waiting game ATM, coping with the frustrations of not being able to roast and surviving on browns from a local roaster here in the Hunter area.
I posted this to find out if anyone else that has bought one of these has had their wiring (earth) checked, because I am now reading that this could be, or is common for these roasters from China.
I know way back beanflying bought the first oz landed one from John and posted a well-detailed review that has since been removed from the forum, but there must be others (perhaps not on or less frequenting this forum)!
My JYR (CCR) is well out of any implied warranty, so this is just another 'buyer beware' message I suppose.
Actually after carefully considering the Aillio Bullet i have ordered a 1kg gas version from him and its due very soon.
Re your electric one ( these are just thoughts btw i am an Elec Eng not an electrician):
- is the supply Circuit breaker an earth leakage type? ( because if it is the trip could be an earth path from the machine to the ground ( ie floor) - that would be enough to trip it and might indicate the body of the machine could be live
- this may also explain why the earth was removed, that would prevent it tripping unless there is an alternative path to earth rather than the lead.
- thermal elements can have an imperfect isolation to the outer casing and leak more than the 30mA. You may be able to upgade the leakage circuit breaker to 100mA type for 15A circuits.
- thermal elements can break down internally but still work- i.e. they are on the way out. As they break down they can draw excessive current/power
- maybe one of the elements is causing a leakage current. Get the sparky to do an insulation test. A proper test is done at 500V and is a special tester ( not a regular multimeter on Ohms)
- there is a mob in Melbourne Hotco who can make custom elements to suit, I have dealt with them and they are OK.
Thanks for your thoughts mate.
I will run them by the electrician tomorrow (if he remembers to turn up) ;-)
Okay, an update on the roaster situation.
Electrician purchased a new relay off the shelf from the local electrical supplier 4 blocks away!
Fitted it this morning, checked all around and turned the roaster on. Everything ran okay with no tripping except the drum wasn't rolling as we hadn't yet plugged in the replacement speed controller.
Turned on the elements and watched temp rise and then the electrician noticed the exhaust fan under the drum wasn't working. Power going to it but not functioning.
Now as far as I know this may have never worked or stopped working a considerable time ago and would explain the heat affected speed controller and a few other signs of excessive heat.
With my minimal use of one or two roasts per month, it has deteriorated the "electrics" to a stage of tripping the unit more often than the once in a blue moon I was previously getting.
The sparky agreed that you wouldn't know if it was working because of other operating noise.
Now sourcing a new fan. (On the way).
Hence why I removed the stock fan on mine and added two 150mm fans. It now keeps the electrical compartment at a low operating temperature. Early days of having my roaster I blew a SSR and couldn't figure out why until I realized that it was just too hot and overheating components.
After I did that modification I was able to do 10+ back to back roasts no problem.