TJ-067 1kg electric drum roaster.

[Pavoniboy]

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.

[Lukemc]

Pavoni did you buy from Juan or self import?

[Pavoniboy]

The drum is 25cm long on the inside dimension and 24cm internal diameter.

I bought mine from Juan.

[saoye]

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.

[Pavoniboy]

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.

[mohanshen]

Toper 1 kg electric

Hi guys,

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.

Thanks
Mo

[saoye]

I removed the left bolt on the sight glass and found a thermocouple with the same thread and so used the existing hole.

[Pavoniboy]

Hi Mo,
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.

[chokkidog]

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.

[mohanshen]

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 .

[Pavoniboy]

Hey Chokkidog,
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.

[Kevo]

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.
Any thoughts/opinions?

[Dimal]

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...

Mal.

[Kevo]

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...

Mal.

Yep, that will be happening Mal (thorough inspection) when the replacement is sourced.

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.

Kev.

[brettreaby]

Kevo

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.