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Oneida Pro 2000 Question

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Forum topic by BoardSMITH posted 05-10-2012 03:17 PM 1381 views 0 times favorited 13 replies Add to Favorites Watch
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BoardSMITH

104 posts in 1012 days


05-10-2012 03:17 PM

I purchased this DC from Oneida last year. I only had it set up in the previous shop before I was forced to move so I had no real experience with it.

Now that I am in a new shop, the DC works fine, plenty of suction and power but the filter continues to clog so much as to be almost completely caked inside. I use it as much as three to four hours straight at a time and at the end of a long run I have to take the filter outside and blow it out. On top of the inside clog, there seems to be an unusual amount of dust on the outside of the filter.

Three weeks ago I pulled the DC apart, cleaned off all the old gasket material, cleaned all the surfaces the gasket would be mounted to, installed new gasket, caulked the seam where the barrel meets the motor housing with silicone, caulked the motor mount bolt heads, reattached the hose from the cone to the collection barrel, removed the wire from the hose where it contacted the cone and barrel, installed some thin gasket material between the cone and hose as well as the barrel fitting and hose and spread silicone around the motor mount where it mounts to the DC. In short, I have done everything I can think of to stop the caking which Oneida says is cause by a pin hole leak.

In short, I am out of options. Can’t afford another brand, hate to have to stop to blow the filter out constantly, dislike all the dust migrating through the HEPA filter ($400 worth of replacement filter) and want to find an answer. Any opinions or suggestions out there?

-- David www.TheBoardSMITH.com


13 replies so far

View killerb's profile

killerb

150 posts in 1147 days


#1 posted 05-10-2012 03:20 PM

Have you called and asked Oneida? I have a bigger one and have no issues at all. I would try Oneida and see what they say. I use mine for long periods of time and never have touched the filter. Good luck. bob

-- Bob www.bobkloes.com

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BoardSMITH

104 posts in 1012 days


#2 posted 05-10-2012 03:27 PM

Yes, I have been on the phone with Oneida three or four times about this and all they can suggest is to burn an incense stick near the joints when the DC is running to find the leak. Done that. No leaks!

-- David www.TheBoardSMITH.com

View rustynails's profile

rustynails

488 posts in 1277 days


#3 posted 05-10-2012 03:31 PM

What kind of equipment are you running? A large sander with a lot of fine dust?

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BoardSMITH

104 posts in 1012 days


#4 posted 05-10-2012 03:51 PM

2 cabinet saws, 8” jointer, 15” planer and a 27” dual drum sander.

-- David www.TheBoardSMITH.com

View crashn's profile

crashn

519 posts in 1214 days


#5 posted 05-10-2012 04:00 PM

how about a pre-separator like a thien baffle or top hat?

-- Crashn - the only thing I make more of than sawdust is mistakes

View crank49's profile

crank49

3522 posts in 1719 days


#6 posted 05-10-2012 04:10 PM

I assume when the system was originally installed you did not have these problems? Or did you literally not get to use it at all before the move?

If I accept that the system did work correctly at some point in time I would next ask what has changed?

If this line of questions is going down the wrong trail, then what could make this type of system bypass a bunch of fine dust into the second stage HEPA filter? The answer to that is air leakage in the base of the cyclone. This can be into the cyclone itself, into the connection between the cyclone and the dust container, or into the dust container itself.

If the bottom end of the system is absolutely air tight, the only other malfunction I can think of is the inlet tube, attached to the inlet of the fan is not extending down below the tangential dust duct inlet in the side of the cyclone far enough; or has dropped loose from the fan housing.

Note: I do not have, and never have personally seen, an Oneida collector, I am speaking as an engineer who has over 30 years experience designing and building systems like this. Therefore, I can only speak in generalities.

Edit: I just now saw your post about the equipment you run. The Drum Sander is most likely your main culprit if everything at the collector is functioning correctly. May just be too much dust loading to start with. A drop-out-box in the line near the sander might help this case.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View Fred Hargis's profile

Fred Hargis

2039 posts in 1242 days


#7 posted 05-10-2012 04:22 PM

I’ve had a Oneida SDG for over 5 years and have never been happy with the separation it has. I’m cleaning my filter about twice per 35 gallon can of chips…if I’m using the drum sander it gets a lot worse. Oneida also worked with me, asking for a sketch of my layout, photos, a sample of dust in the filter, what grit was I using. As an experiment I tried to measure the separation I was getting…it turned out to be 98.6%, right on at their spec of 99%. After all this communication with them they quit talking to me….and offered no suggestions. It’s my opinion that the basic design of their stuff just doesn’t do the job as well as a Pentz design cyclone (which they poo-pooed in a phone conversation with me. I’ve resigned myself to the frequent cleaning until I move to a different cyclone. On thing I did do was mount a magnehelic to check the filter. When it starts to climb above 2”, I clean it out….much better than guessing. I got this from e-bay for about $30.

-- Our village hasn't lost it's idiot, he was elected to congress.

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BoardSMITH

104 posts in 1012 days


#8 posted 05-10-2012 05:25 PM

I appreciate all the replies and suggestions. I believe I will try a thein seperator between the main duct and the double drum sander to see if that reduces the filter clog.

-- David www.TheBoardSMITH.com

View Scot's profile

Scot

344 posts in 2145 days


#9 posted 05-10-2012 05:27 PM

I think you are on the right track, the drum sander seems like the culprit here.

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

View pintodeluxe's profile

pintodeluxe

3559 posts in 1562 days


#10 posted 05-10-2012 05:43 PM

That is surprising to hear that a two stage cone type DC would clog the filter that quickly. That is exactly the type of problem it is supposed to prevent.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View crank49's profile

crank49

3522 posts in 1719 days


#11 posted 05-11-2012 06:47 PM

The Thein separator at the sander will most likely work, but a simple drop-out -box would be nearly as effective and a lot simpler to build.

Which ever way you go, good luck.
And a follow up evaluation would be most appreciated.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View BoardSMITH's profile

BoardSMITH

104 posts in 1012 days


#12 posted 05-11-2012 08:07 PM

crank49 – I know what a thein seperator is but please explain what a drop-out-box is, how it works and how to build one.

-- David www.TheBoardSMITH.com

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crank49

3522 posts in 1719 days


#13 posted 05-13-2012 02:05 AM

In its simplest form a drop-out-box is just a drum, with a lid and two duct connections. One inlet and one outlet.Heavy dust enters the drum at high speed and as the area of the drum is much larger than the duct the velocity drops very low. This causes the heavy particles to be overcome by gravity and fall to the bottom of the drum. The lighter, very fine dust and the air then re- accelerates into the outlet duct, leaving the heavy stuff behind. Not as effecient at dust removal as a cyclone, but does not create as much pressure loss. It takes energy to spin the flow into a vortex in a true cyclone.

Here is a link to another jock who built one based on plans in ShopNotes Magazine.
http://lumberjocks.com/projects/61326

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

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