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Author Topic: immersion oil smoke coming out of the miner ...  (Read 360 times)
lucifsg
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October 15, 2019, 11:34:50 PM
Last edit: October 16, 2019, 03:08:49 PM by lucifsg
 #1

Hi ,
i immersed my T3 50T in mineral oil and it didnt work . I had about 7 days an A9 , borrowed from a friend and everything worked fine in oil . So after that passing the test i used the same oil on my T3.

I split the main unit from the psu (it comes as one unit ) and immersed the unit in oil , same as i did with the A9 . 30 seconds after powering it up smoke came out , 15 secs later again the same and then there were small bubbles with smoke coming out  out of the fans, poping once they came to surface so i powered it off.

Any ideas about what went wrong  ?

Video https://youtu.be/cMz9V0C5Yik

link of the miner :
https://www.innosilicon.com/html/t3-50t-miner/index.html

Thanks in advance
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Pyrojason
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October 16, 2019, 04:48:50 AM
Last edit: October 16, 2019, 10:31:37 AM by frodocooper
 #2

Can you explain in more detail how you have the oil cooling set up?

Something sounds seriously wrong to have smoke bubbles.

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October 16, 2019, 05:24:48 AM
 #3

First I thought this might be because it sounds like you still have your fan hooked up and spinning. Not sure if that's the case, but the only setups I've seen the fans are disconnected if I'm not mistaken. Either cheated at the control board or using immersion firmware. Then i had this thought.
Just looked up what the A9 is. Is this the grin miner GPU Looking thing? If so that says it draws 500w you are now using a machine that draws  3100w +. I would guess you are not circulating and cooling your oil well enough to remove heat.

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October 16, 2019, 06:35:15 AM
Last edit: October 16, 2019, 10:32:25 AM by frodocooper
 #4

First I thought this might be because it sounds like you still have your fan hooked up and spinning. Not sure if that's the case, but the only setups I've seen the fans are disconnected if I'm not mistaken. Either cheated at the control board or using immersion firmware. Then i had this thought.
Just looked up what the A9 is. Is this the grin miner GPU Looking thing? If so that says it draws 500w you are now using a machine that draws  3100w +. I would guess you are not circulating and cooling your oil well enough to remove heat.

Hi, it doesn't have to do with heat, cause the miner was broken in under one minute since powering it in oil. The oil was still cold.

Can you explain in more detail how you have the oil cooling set up?

Something sounds seriously wrong to have smoke bubbles.

I didn't get to the point I had to cool the oil. It all happen in 30 seconds. Funny thing is the miner was still on, though never connected to mine.
For the record I had a radiator with 9 fans on it but the oil was still cold.
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October 16, 2019, 06:46:09 AM
Last edit: October 16, 2019, 10:33:22 AM by frodocooper
Merited by OgNasty (1)
 #5

Hi, it doesn't have to do with heat, cause the miner was broken in under one minute since powering it in oil. The oil was still cold.

What kind of oil was used? If it isn't heat, its conductivity. As Steamtyme said - most of the setups have the fans removed and bypass chips are used on the fan pin jacks. You'd need a way to circulate the oil or use a bubbler in the way myself and others have designed.

If you had an immediate failure, find out what happened because it sounds like something seriously shorted out and if your oil is non-conductive as it should be, this short is likely to have been caused by something else.

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October 16, 2019, 11:31:53 AM
Last edit: October 16, 2019, 11:14:57 PM by frodocooper
Merited by OgNasty (1)
 #6

Can't be heat because the miner didn't had tha chance to sync and start mining.
I used paraffin oil pharmaceutical / cosmetic grade.
Fans were and are working even now if I power it up as does the entire machine. It does power up and just won't sync or do anything other than staying idle
I ll try upload a video in an hour or two.



Here is the video

https://youtu.be/cMz9V0C5Yik

By watching it over and over again I noticed the bubbles coming from the center of the fan. I also noticed that just one seems to be working. So can it be that the fans burned due to the liquid resistance?
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October 16, 2019, 04:30:43 PM
Merited by OgNasty (1)
 #7

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October 16, 2019, 05:08:42 PM
 #8

So can it be that the fans burned due to the liquid resistance?
Makes sense I wasn't positive but using a fan designed for moving air to operate in liquid is way outside it's design. Especially when these fans tend to try and ramp up to 100% on startup before slowing down while the unit goes through it's start-up procedure. Hopefully that's the only thing that 's  the only thing messed up, you won't get warranty but should be able to source a new fan.

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October 16, 2019, 06:07:07 PM
Last edit: October 16, 2019, 11:16:08 PM by frodocooper
Merited by OgNasty (1)
 #9

or buy a fan spoof chip

https://www.ebay.com/itm/New-PRO-Miner-fan-simulator-Antminer-Bitmain-for-oil-immersion-asic-cooling/264261506973

note:  I just went to ebay  and posted the first one I could find.

I do not know the seller.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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October 16, 2019, 06:14:40 PM
Last edit: October 16, 2019, 11:16:31 PM by frodocooper
 #10

That's pretty much a must if they continue with the immersion cooling. I'm still not convinced they have the appropriate cooling setup, for 3100W minus the fan draw. In the meantime that unit is losing money by the day being down. So I would order both, unless they are positive this will work with the cooling setup they have.

In the meantime if you have 2 S9's you could try them as a test for tour cooling setup. Or any older miners just for a stress test. Would hate to see you get up and running again only to hit another wall.

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October 16, 2019, 09:13:44 PM
Last edit: October 16, 2019, 11:17:03 PM by frodocooper
 #11

[...]

Can you still access to the configuration for the miner?

lucifsg
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October 16, 2019, 10:09:49 PM
Last edit: October 18, 2019, 01:59:51 AM by frodocooper
 #12

Can you still access to the configuration for the miner?

Yes i can . But it shows the initial "syncing" screen of innosilicon . I can navigate through the tabs as far as i remember .

Is there any chance i could access it by ssh and bypass the fans from there?
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October 17, 2019, 10:29:05 PM
 #13

By watching it over and over again I noticed the bubbles coming from the center of the fan. I also noticed that just one seems to be working. So can it be that the fans burned due to the liquid resistance?

The moral of the story: Never submerge air blowing fans into liquids lol.

As others have said, you need either a "solid state" (chip) fan simulator, or a firmware that lets you start without fans. Some lazy people just place the fans outside the liquid, extending the wires if needed. Too bad you already burnt yours...

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October 18, 2019, 05:41:03 AM
 #14

Is there any chance i could access it by ssh and bypass the fans from there?
For best pool compatibility and reliability I would purchase some of the fan-bypass chips mentioned by several members and leave the firmware stock.
For now you could indeed try leaving the fans connected and hang them out of the oil- however, if they're already burnt it might be an issue. It sounds like something you'll have to experiment with. I wouldn't get any hacked firmware to begin with but so far there aren't very many reliable ways to bypass the fans other than a hardware solution. Hopefully you find a way to make it work.

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October 18, 2019, 09:13:34 PM
Last edit: October 19, 2019, 03:07:12 AM by frodocooper
 #15

I tried to search in google to any terms to get SSH code to bypass fans but the result is different it seems no one still sharing or posting if how to bypass fan to any silicon through SSH.

The only solution for this is faking the fan sensor try to find working signal generator "555 timer" this is mostly used on faking fan signal on antminer s9.

Check these two signal generators below.

- DROK LCD Display PWM Frequency Meter 1Hz-150kHz Adjustable Duty Ratio 0-100 Percentage Square Wave Rectangular Wave Signal Generator
- NE555 Signal Generator Square Wave Pulse Frequency Adjustable Module 1~500KHz

If not, better replace the burned fan with a new one.

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October 21, 2019, 06:10:05 PM
Last edit: October 24, 2019, 01:04:14 AM by frodocooper
 #16

Thanks a lot guys. I bought this from ebay and atm waiting to see if thats what went wrong. I can access the web interface menu when powering up so fingers crossed.

https://www.ebay.com/itm/12X-Fan-Simulator-Emulator-Spoofer-Fan-Delete-All-miners-with-PWM-fans/303299288752

By the way for those who asked i used pharmaceutical/cosmetic grade light paraffin oil which belongs to mineral oils (actually its the purest , clearest mineral oil i had access to )
It has 2 point something conductivity index while water has 80+ , its cheap and you dont buy something worth 4€/lt for more just by naming it "special ultra super mining oil"

Used a 9x12cm fan radiator (up to 18fans total if u put 9 more one the other side) and a fish tank pump . Will it work ? I dont know , waiting those fan spoofers to try .

I saw guys doing it with just a 3 fan radiator on youtube , but then again their miners were not 3100+ kw .
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October 21, 2019, 06:19:06 PM
 #17

Fine and dandy but be aware that mineral oil attacks many plastics such as Nylon (used for connectors) and PVC (wire insulation). It makes them rock hard and brittle which is why a silicon oil is the preferred fluid.

For bitcoin to succeed the community must police itself - Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats
How a miner mfgr SHOULD operate: HaggsFIN trip to Canaan My info useful? Donations welcome! 1Fuzzyk398kDWVjuC5qPX5v6CjSkvbgAbd
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October 25, 2019, 06:27:41 AM
Last edit: October 26, 2019, 11:06:13 AM by frodocooper
 #18

Had not even thought about this - I wonder how long it would take to make the plastics hard and brittle...

Apparently Novec oil by 3M is a superior solution to mineral oil, based solely on their advertisements. Have not tried this but am curious.

https://www.3m.co.uk/3M/en_GB/novec-uk/applications/immersion-cooling/

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October 25, 2019, 01:06:38 PM
Last edit: October 25, 2019, 03:49:31 PM by NotFuzzyWarm
Merited by OgNasty (1), Pyrojason (1)
 #19

3M's Novec is NOT an oil and it removes heat differently than oil does or other fluids do. Novec is a Fluorocarbon fluid that uses phase-change to absorb and release heat (it boils/condenses). It is a much more efficient way of moving heat (Bitfury uses it for their farms) than simply heat xfr to/from a fluid. It is also very very expensive.

For oil cooling look at using silicon-based oils such as from Clearco. They are inert to most materials. I've posted about them before so just search for immersion cooling.

edit: for a start, ref https://bitcointalk.org/index.php?topic=3075413.msg36500201#msg36500201

For bitcoin to succeed the community must police itself - Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats
How a miner mfgr SHOULD operate: HaggsFIN trip to Canaan My info useful? Donations welcome! 1Fuzzyk398kDWVjuC5qPX5v6CjSkvbgAbd
-Support Sidehacks miner development. Donations to:   1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
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October 26, 2019, 06:57:42 AM
Last edit: October 26, 2019, 11:06:41 AM by frodocooper
 #20

Interesting. It sounds like a really good product.

"3M Novec Engineered Fluids have a number of significant advantages versus other classes of dielectric fluids, including mineral oil. In addition to being non-flammable and non-combustible, Novec fluids have the boiling points and thermal stability needed for two-phase immersion cooling operations. Servicing and maintenance are made easy, since the electronics come out of Novec fluid clean and dry."

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