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New dust collector not working very well

13K views 30 replies 16 participants last post by  old55 
#1 ·
Hey guys I just bought a 1250 cfm dust collector and canister filter from Rockler. It sucks great but dust seems to come out of the filter when its on. You can watch the dust in the clear bag strapped at the bottom start swirling and make its way out of the filter. It is not coming out of the bag it's literally through the canister it self. Any thoughts ? Thanks !!
 
#2 ·
welcome to the forums N/A...
what's the make/model of the DC and micron rating of the canister???
 
#5 · (Edited)
#19 ·
Stick,

I have the exact same Jet DC (Model DC-1200VX, with Canister Kit), Vortex Cone, 2 HP, 230 volt, that you have I believe? Do you have 4" or 5" metal main duct running to your unit? I have been using the plastic, flexible, corrugated 4" line as a "temporary" measure (which has become a permanent set up) until I get a metal duct set up layed out and run. I will be running the metal main line for ~25 feet with the usual drops for TS, BS, Jointer, Miter Saw and lathe. I just roll my planer to a door and let it exhaust outside. Just wondered if a 4" trunk line would do the job. Would have metal blast gates for each machine.

Don
 
#7 · (Edited)
is this more like your set up???
how new is the unit???
what size input lines do you have installed???
are you using the 30 micron collection bag or a clear plastic one???
 
#14 ·
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#10 ·
Lyle (just guessing at the name) if you are referring to a cloth bag as the filter then you should know that these bags are rated to a certain micron size. Some as large as 5-7 microns which won't stop fine sawdust at all, chips yes but not so much the finer particles. Cut something like MDF and you'll have plenty of dust floating in the shop. Check the rating of the bag/filter. My CV1800 is rated to .5 micron and captures almost all of the sawdust. Filter Efficiency: 99.999% at .5 micron (MERV 15)
 
#12 ·
Here is what I have that may answer your comments:

I installed a dust monitor in my shop so I know the amount of dust that I am breathing. Sometimes I don't see dust, but the monitor tells me I have a problem.

Someone pointed out about the rubber gasket. I just got a new Laguna filter for my dust collector. There was no gasket at either end of the filter. I put it on as-is and attached the hose to the thickness planer. The dust monitor read over 5,500 whereas it is generally under 100. I knew what the problem was because of no rubber gasket. I sent Laguna a message that they should put a warning on their filters that the customer should buy a dust monitor and they should buy a gasket. The gasket that Laguna sells doesn't go all the way around their filters. It takes at least two gaskets to go around it.

Hope this helps!

Malcolm / Kentucky / USA
 
#13 ·
I don't think we have a response on what type of unit we're talking about. Being Rockler, I think it is the one with the blower on top, plastic bag on the bottom and the canister in the middle. So it's hard to guess what the problem is. A defective filter (it would leak more in one place more than any other). Or it could be the ring that holds the bag in plce in which case there would be dust accumulation on the filter just above the retaining ring. Or one of the rings around around other connectors which would deposit leaking sawdust near the connector.

It would certainly help to have a chip separator between the machine and dust intake on the side of the blower. Hopefully Lylevegas will come back and let us know which one, but the areas I mentioned is where I'd be looking. On my DC system, the retaining ring holding the bag in place wasn't tight enouth and the high pressure coated the leaking area with a fine layer of sawdust.
 
#16 ·
Make sure all connections are tight. If the bag is the source of the dust you may need to modify your set up. I have a Jet DC1100. It has a cannister filter and not a Cloth bag. At the bottom is a clear plastic bag. The collector worked fine but the filter would clog up and the efficiency would go way down. I bought an Onieda Dust Depty 4" with a 30 gallon collection can. Since I put that on I have no dust in the bag and no fine dust in the canister filter. This is an added expense but really works. Personally if it is not very old then take it back and buy a dust cyclone extractor. If you already have a collector then add the dust deputy 4" and it will work very well. Onieda makes a 6", 5" and 4". I bought the 4" at Wood craft for $215.00 because I use 4" hoses and did not have to make a bunch of adapters. The collector has a 6" intake but I already had an adapter from 6" to 4" and existing hoses. Dont confuse the Dust Deputy with 2.5" with the Super Dust Deputy.

If I were to have to buy a new collector I would buy a cyclonic type to start with. The filter stays clean and cfm stays high. Some of the cyclones when the collection bin is over half full will start to sipon the chips and dust into the main bag. If you see chips in the main bag dump the cyclone bin. Also if there are any air leaks you may bet dust in the main bag so check for leaks in your hoses, clamps and so on.
 

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#22 ·
Onieda 4" Cyclone Works Well



The Jet DC1100 has a 6 inch inlet. But I use all 4 inch hoses. If I am losing any efficiency I cannot detect it. The Onieda made my dC1100 more efficient because my canister is not clogged up with fine dust. I have emptied the barrel on the onieda twice since I have had it and so far there is no dust in the bag or the canister filter. I am quite happy with the cyclonic add on.
 
#25 ·
Since I have 1100 CFM (therotically) a small loss of efficiency is not detected. The Jet DC1100 has always worked well but now it is really working. If I would change over to smooth wall pipes it would be better but like it is is good enough. I dont want to chase my tail on making it the absolutely best efficiency because it is working fine the way it is. I could spend a lot of time and money on improvements but I believe in the old saying "If it aint broke dont fixit". I only run one tool at a time so 1100 CFM is adequate for one tool with one hose attached to it.
 
#27 ·
Is there any possibility the dust you are seeing is just dust blowing off the outer surface of the cartridge?

I have three dust collectors. One with two one micron bags with two plastic bags under them, another with two one micron cartridges and a Harbor Freight unit with an after market 1 micron bag. Once in a while, dust that settled on a bag will blow off, if I haven't fired up the collector since running the miter or firing up a belt sander.

Even the garbage bag the HF collector came with didn't kick out visible dust. It's hard to imagine a cartridge doing that. It it is, is sounds like others might be right about a defect or missing gasket.

I found some incense left behind by the former occupant. I keep it to test the seal of my cyclone on one of the big collectors. I move around the edge, slowly, looking for spots where the air would be drawn in. In your case, the same thing could be done, but looking for spots where the smoke is pushed away.

If worse comes to worse, borrow a cig from someone and use it the same way.
 
#29 ·
I have a Dylos DC1100 dust monitor that I have sitting near where I work most of the time. It is between the dust collector and my work bench and it runs all the time. I can see it from my work bench.

I also have two Jet air filtration units (AFS-1000B) suspended from the ceiling. The one furtherest away from the work area runs all the time. The one near the work area I turn it on when the monitor indicates a dust problem or when I am resewing on the bandsaw.

Malcolm / Kentucky USA
 
#30 ·
How you could possibly mess up your dust collector cleaning HVAC duct? They are two unrelated systems at least in the normal sense. With my shop in my basement I do have the central return for that area covered to protect the HVAC duct and coils. I use 4" pleated MERV16 filters on my HVAC system and a ceiling hung Jet air filtration unit along with CV1800 dust collector which is using 6" PVC.
 
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