anyone know if this pump can be used with the OC20?
http://www.pumpagents.com/cgi-bin/store.pl

i tried to get more info on it from Oberdorfer, but i couldnt find it.

will any carbonator motor fit it, do they all have the same size keyed type shaft?

oops, link didnt work, hang on.

it wont allow a link. lets try this page, then enter "N95060GLC-80" (Oberdorfer part number) in the "store search" box.

http://www.pumpagents.com/OberdorferPumps.html

quote:

danalinscott
member
Posted 30 September 2006 04:20 PM Hide Post


My previous testing of the spinner type oil filter showed me it did not provide adequate suspended water removal. I did not heat the wvo to the temperatures you have though and the results you are getting indicate that this may be the key to attaining this.

I must admit that I feel a bit foolish...

Dana
दान

Assuming that the manufacturer has already done so, has anyone else ever done any testing to verify safe maximum fluid temps & pressures for any of the major brands of fluid driven CFs?

[/QUOTE]Assuming that the manufacturer has already done so, has anyone else ever done any testing to verify safe maximum fluid temps & pressures for any of the major brands of fluid driven CFs?[/QUOTE]

Hi Welder,

I trust someone that accidently popped an o-ring or bent a rotor will have some idea what pressure that was at. However, I can't imagine anyone has done it on purpose to test it.

I've never had any problem and know I've spiked it to at least 95 psi and 185 degrees F. My standard run temp is 160-170 at 90 psi.

And as for water, isn't an issue, the water is gone long before the particles are.

Hope things are going well for you up there.

Sam

quote:

Hope things are going well for you up there.

We've had an insane dump of snow this winter.

I live in the Pacific Northwest, about 4-6 hours drive due north of Seattle, so we don't usually get much snow.

This year was natures revenge for all the previous mild winters.

How was your winter this year?

quote:

Originally posted by welder:
How was your winter this year?

It's been brutal, record cold and snow. Last week I high centered my truck in the driveway, and that after shoveling! My old truck, that I use every few weeks for collecting oil, is stuck behind a snow bank, something I'll have to deal with this week.

Collecting oil has been a chore, to understate it. But the good news is my truck runs great, even in the very cold, we just got back from my in-laws this evening, 150 miles north, and the warmest it was all day was -4 F. (I've had so much coffee I can't sleep)

This too will pass, spring is only a few months away.

Regards,

Sam

after searching the forum for suspended water removal with centerfuge and not really getting a final answer of its effectiveness in passiing hpt post centerfuge-does anyones more recent experience support centerfuges ability to adequately remove suspended water and how many are adding mistwash as part of the process

I regularly fuge 250 gallon batches, they go in so wet it is dangerous to do a hpt, in abpout ten hours it comes out with zero bubbles, just convection squiggles, as far as I am concerned mist washing is an unnecessary waste of time.

I mist wash for the hell of it. There's no downside except longer processing times, but I only get a 1/8 inch deposits from a barrel in my cf, so I'm not concerned. I think it helps, but that's just anecdotal.

My oil is pretty dirty to start with, I must say, so mist washing is probably efficacious for me.

I also mistwash, for several reasons. I've found it does clean the oil, and I've seen enough things put in the oil that it appears to be a risk assuming there isn't some cleaning agent used at some point.

I've lab tested enough oil samples that I know the centrifuge takes all the water out.

Sam

It seems that a lot of people like the result their Dieselcraft centrifuge delivers. I happen to be rather unhappy with my results although I am not using a brandname Dieselcraft unit so let me explain.

I have scored something equivalent to an OC 200 unit. I have it set up over a 60 gallon domestic hot water tank (which sits upside down and has it's bottom, now top, cut out). My average batch is 40 gallons. Some batches get mist washed before processing, others don't.
I use a 3 phase motor on my pump and set up for approximately 100 PSI. The motor speed gets adjusted as the oil heats up to maintain the pressure.
I run my batches about 2 hours with at least 1 hour between 160F to 180F. The end product is tapped off while the centrifuge runs to avoid contamination of the cleaned product from the crud in the centrifuge.

I have been having weird issues with a stationary engine which I run on straight vegetable oil and I narrowed the problems down to fuel quality. In an effort to quantify the problem, I ran one batch of oil through a 2 micron filter. The outcome was a completely plugged filter! The filtering unit I used was a Racor 1000 series - a fairly large filter.

I am about to invest in a motor driven centrifuge but thought I would post and see if someone has run into similar issues.

I am under the impression that the OC 200 has a 10 GPM flow rate but it seems that it might be only 5 GPM. I don't know the actual flow rate of my unit. Nevertheless, I should still be ok with the processing time based on the ballpark rule of 5 - 10 passes for complete cleaning.

The unit I have is an older unit, taken off a commercial engine (with new o rings). It seems to rotate freely and it does collect crud in the spinner. The oil 'appears' clean but obviously isn't.

Should 2 hours of processing be sufficient time for a final product of 1 micron or less? The centrifuge is a fairly simple device and providing it spins (which it does) I can't really see how anything could be malfunctioning. The only issue I can see is the length of the processing time. I am reluctant to run the system unattended for a number of reasons including that my high pressure gear pump leaks (this is the second new pump that has developed this problem). I have to empty the 1 gallon catch bucket about every hour. It is also a very noisy and power intensive process.

I wonder if I could get some comments from people on this issue ... maybe there is a fundamental problem here that I don't see for some reason.

Jens

quote:

Originally posted by Jens:
It seems that a lot of people like the result their Dieselcraft centrifuge delivers. I happen to be rather unhappy with my results although I am not using a brandname Dieselcraft unit so let me explain.

Should 2 hours of processing be sufficient time for a final product of 1 micron or less? The centrifuge is a fairly simple device and providing it spins (which it does) I can't really see how anything could be malfunctioning.

It has to spin at a very high speed, 8000rpm on mine. If you don't know the flow and pressure and rpm specs yours is designed for, you may never get it spinning fast enough to work quickly. Its probably very different from a dieselcraft, we can't tell from your description. Best to start a new thread and copy this post to it and you may get more responses if anyone has tried one similar.

You must be using the wrong kind of pumps, mine is very quiet and hasn't leaked any after 3 years of use. Mine doesn't draw much power, its only 1/3 hp, drawing <300 watts. If the noise is coming from the CF, it could mean the bearings have too much wear or slop, or its out of balance, and both can prevent it from spinning fast.

The OC200 look alike can only spin at 5,000 RPM max and gives 25% less G force compared to the Dieselcraft OC50.

Try running oil at 200F and run more passes or sell it on ebay and buy a Dieselcraft OC50.

Sun Wizard, I use a Bronze gear pump from Princess Auto and it leaks at the shaft. The centrifuge itself makes minimal noise - most noise is generated in the motor and pump - I estimate that I supply about 2 Hp into the pump to get full spinner speed. I also have a 3500 Watt heater element going to heat the oil.

Mr Dieselcraft, my hoses are only spec'd for 180F so running at 200F is not an option. What would you consider to be a reasonable number of passes to get to 1 micron at the end ?

Thanks !

Jens

quote:

Originally posted by Jens:
What would you consider to be a reasonable number of passes to get to 1 micron at the end ?

No way for anyone to guess unless you know how fast its spinning, and your flowrate. Yours must have a huge flowrate if its taking 2hp to run the pump. This gives the VO less time in the CF which means you need more passes.

One way to get a very rough idea of how fast its spinning, how long does it take to stop spinning after you shut off the pump?

I never timed the spin-down but I would say around 30 seconds as a WAG.

Jens

I did a cleanout of the spinner from my last run today. There was considerable crud although it was only a thin coating over the entire inside of the spinner. The interesting bit was the fact that the troughs leading to the jets had considerable crud in them as well. This is where the 'cleaned' oil flows down and into the jets to power the spinner.
It was a bit shocking/disappointing to see how much crud was there after the spinner.
Since other people have talked about their jets plugging up, I am assuming this is normal ?

Jens

PS.: I got out-bid 3 seconds before closing on the Raw Power Centrifuge that was on ebay. Looks like I will try my hand at building my own from scratch.

jens: if you have acces to princess auto, which is looks like u do, return the "teel" bronze gear pump for a refund, and get a hydraulic pump. if u are using a furnace fan motor, return it as well and use a fan cooled sealed motor, check my utube video http://www.youtube.com/watch?v=AC3_VIak5Lo

now before everyone says that a hydraulic pump will make to much pressure just remember that pressure is restriction to flow, if there is not enough restriction it cannot build enough pressure, been using my setup for quite some time with excellent results.

check out the pumps on page 12ish in the hydraulic section: http://downloads.princessauto.com/?Lid=E

couple it to a motor, i got a 1/2 hp but i do believe a 1/3hp would do, but for me the 1/2 hp was on sale that day so..
you will save the power and it wont leak as the seals are designed for much higher pressure

Nice setup !
I am at a stage where I have pretty much given up on this particular oil cleaning method. I have sufficient pressure with my current setup even with a leaky pump but I do not trust this setup enough to let it run unattended. At 10 gpm flow rate, it only takes 4 minutes to dump the entire batch all over the shop.
I have run the setup for 2 hours at a time and the output quality was not satisfactory. The issue is either the cleaning method, the cleaning time or the spinner I am using. Since the cleaning time is limited by the cleaning method, I don't want to use this method. I am happy to babysit for two hours but that is pretty much my limit of patience. A low flow no pressure type setup would, in my mind, be more suitable to leave run unattended.
The cleaning method may be suspect but since lots of people are happy it is more likely the spinner I am using isn't working as well as it should. I am not willing to buy a new spinner for this system and hope that things improve (there is still the issue of high pressure oil running un-supervised).
The result is that I am going to abandon this method of cleaning.
I had anticipated buying either a Raw Power or a Absolute centrifuge (or similar) but was out-bid on the last two ebay auctions that I participated in and I am not able to pay full price. My next option is to build a centrifuge from scratch.
I have also looked at cost of filters vs cost of the centrifuge and it appears that with the amount of oil I use, filters are quite cost effective. The issue there is process speed because settling time will be involved and I have limited space.
At this point I am not clear what my next step will be.

Jens