What -
Buy a used Nederman S1000 10Hp 5000 cfm baghouse style Dust Collector. Used – Target Cost $11,000 – New is $13,500 or more.
Note: Tom Treer and Dave Velzy are tracking multiple used units – We hope to beat this cost.
The used DCs come with a starter and inlet ductwork. Costs range from $3,800 to $10,500 delivered.
https://www.nederman.com/en-us/pws-catalog/p/s-filters/s-series-dust-collector
Why – The Laguna X-Plus 5 installed in January 2024 performed well on installation, but has become a maintenance nightmare. The filter clogs quickly and defies cleaning. When clogged, suction drops significantly. Replacement filters cost $550 and do not last long. There is no practical fix.
Dust Collection Background – Small DC’s (like what we have now) need blast gates in the ducts because they don’t have enough cfm suction to operate all of the machines at the same time. Downside – You need to open and close blast gates – Too many open – It doesn’t clear the chips. When all the blast gates are closed, you can collapse the ducts. So this kind of operation often has very strong ducts. (Hive13 doesn’t and yes, we have collapsed the ducts.)
Industrial sized DC’s have enough suction to clear chips from all of the machines at the same time.
The S1000 10Hp unit pulls 5000 cfm through a 15.75” duct. This should collect the dust from up to eight machines simultaneously. Most machines will not have a blast gate. Because the ducts are open, there won’t be as much static pressure and we can continue to use HVAC gauge ducting. (what we already have) Note: We should install a 12” Static Pressure Regulating Damper ( doggy door )
If we go with a smaller capacity DC that requires blast gates, we probably will need stronger ducts to resist the suction when all blast gates are closed. Estimate $6000 for that stronger ductwork. The crazy thing is that an industrial capacity DC allows us to get away with weaker ducts.
The Nederman S1000 uses plastic bags similar to the shop fox DC. We can make bins to replace the bags.
Why did we buy Laguna? Price and performance specifications – And we were happy with the other Laguna equipment in the shop. At the time, we only had 220V 1 Ph power.
What are the alternatives? Obviously Laguna is out of the question.
Considered Alternatives -
Oneida:
Oneida was contacted for an analysis and quote. The Oneida Analysis Costs $400, but you don’t get their plan unless you buy the DC and duct work from Onieda.
The Oneida quote at $18.6K requires two separate 7.5hp cyclones for equal cfm to the Nederman S1000. The Oneida cyclones require frequent cleaning with compressed air from the outside of the filter. There are four filters in the pair of Oneida units.
Donaldson:
In 2023 we got a quote from Advanced Air before buying the Laguna. That quote was for a Donaldson size 24 Cyclone with 7.5 HP motor - 2,460 CFM @ 10.25” w.g. - Cyclone discharge to 55 gal. drum
Cost for the cyclone $8,400. Design work for ducting was $2920. – It was too tall to fit in our space.
Oneida Filter Maintenance – Weekly – Minimum
Use a hand-held, compressed air nozzle at < 90 PSI to blast air along the filter’s exterior pleats. Hold the air nozzle at least 2" away from the filter. Closer blasts will damage the filter material.
Wait a few minutes for dust to settle then remove the Fine Dust Bin at the bottom of the Filter by loosening the eight 5/16"-18 Thumb Nuts (H5) and eight 5/16"-18 J-Bolts (H4). Dispose of dust carefully and then reconnect the Fine Dust Bin. Note each 7.5 hp unit has TWO filters = 16 bolts
The four Replacement Filters 18" x 62" Stacking Spunbond Filters #FCK186200 $465 each Plus shipping. = $ 1,860 – Replacement? – No one knows
Recommended cleaning of the Nederman unit is:
During normal operation and even after cleaning, a small dust layer remaining on the inside of the bags assists in the collection.
Fine dust that cannot be blown out will become deposited/trapped in the filter fabric. Therefore, the filter bag will lose its efficiency over time due to these deposits in the fabric. In applications with a high fine dust concentration, the filter bags should be cleaned mechanically through “beating”, “shaking” or via optional shaker systems. Replacement bags $42 each x 24 = $1008 – Bags are expected to last a long time – 3-5 Years per manufacturer.