just bought this for use in the workshop

[flying haggis]

used central vac system motor and hoses

cost me the grand sum of £10

 

[Bingy man]

Bargain of the year .

 

[TRITON]

Well im sure you'll find a use .. but tbh isn't this for household cleaning, might not be suitable for masses of wood dust or chippings.

 

[Morag Jones]

But if you build a cyclone can inline… maybe?

 

[flying haggis]

Well it is a bagless model with just a filter twixt motor and bucket and the other good thing is that as they were designed to start up when the hose was plugged into the wall socket it already has a built in relay and low voltage transformer for a start switch.
And it came with over 50ft of hose!

 

[Sideways]

Central vac systems are powerful and crazily expensive.
2 and 3 stage turbines not uncommon. It's one of the uses for them like in HVLP sprayers.

That was an great score.

Just put a cyclone on the front of it.

 

[Hypnotic Chimera]

I recently bought a Evolution R15VAC and added one of these:


Dust Commander (Amazon link)


It is absolutely fantastic. Needs to be fitted centrally to a *circular* bucket for best effect - but I'm getting ZERO dust into the vac. Game changer.

 

[flying haggis]

That cyclone looks good and seems to do the job as you say. I got the manual with the vac and it states max suction power 480w, max air flow 55L/s and max vacuum 25kPA. Is that good or bad?

 

[Hypnotic Chimera]

That cyclone looks good and seems to do the job as you say. I got the manual with the vac and it states max suction power 480w, max air flow 55L/s and max vacuum 25kPA. Is that good or bad?

I've no idea where those numbers lie, relatively speaking, compared to other vacs, although mine is specified at 42L/s flow rate, even though it's a 1000W motor... So on that single metric your bargain vac outflows mine by circa 25%.

I liked the Evolution one for it's power pass-through function and also since it can be used as a wet vac and can also be used as a blower... still, I'm impressed that you only paid £10. Can't be beaten at that price.

 

[Katomi woodsmith]

I finally decided to get a “proper” vac for the workshop, my leaf vac conversion is ok for the wood thicknesses but sanding dust from lathe work ....
So I got something that goes down to half micron, it’s made a huge difference in the workshop

 

[TomGW]

Excellent buy. Definitely use a cyclone.

 

[Katomi woodsmith]

Cyclone... would be a nice addition however, space is somewhat limited the new vac is bigger than I thought.
But never mind it’s a hobby not a job.

 

[Sideways]

That cyclone looks good and seems to do the job as you say. I got the manual with the vac and it states max suction power 480w, max air flow 55L/s and max vacuum 25kPA. Is that good or bad?

Some advertising copy about the cv20 includes :

"
HEPA Exhaust Muffler: The integrated HEPA exhaust muffler ensures clean air expulsion, contributing to a healthier indoor environment.

Commercial Duty European Motors: Designed for durability and powerful suction, the unit's motors deliver reliable performance.

Triac Soft Start: The Triac soft start feature enhances the longevity of the unit by minimizing power surges during startup.

German-Made Printed Circuit Panels: Benefit from high-quality engineering and advanced technology for consistent, dependable operation.

Swedish-Made High Efficiency Filters: The unit is equipped with top-notch filters, ensuring efficient dust and particle capture for cleaner air."

These central vacuum units seem to be popular in Canada where one online seller says this :
"Central vacuum motor: Designed to last 1000 to 1500 hours the Italian central vacuum motor gives you the power you need for constant vacuuming."

The big name brand in vacuum motors based in Italy are Ametek Lamb. Many vacuums and other devices use their motors, including Fuji HVLP spray turbines.

480 air watts if that is what they mean is good.
Back at the start of the year I posted up some performance figures for a 1200W (electrical power in) Ametek turbine and the corresponding max numbers for that were just under 200 airWatts and 48L/s down a 50mm hose. Your new gizmo should perform better than a premium powertool dust extractor.

 

[BC'er]

That's a very good option and what will make it even better is getting one of the "Dust Deputy" cyclonic separators and mounting that on air tight bin upstream from the vacuum itself. I use a retired built-in my shop vac and have it mounted on the wall. The inflow goes through the conical separator first and almost everything drops out into that bin, which means I hardly ever have to mess with emptying the bin on the vacuum itself. The vacuum bag occasionally needs to be removed and blown or washed out, but far less often than it would otherwise. It's much easier to empty the much larger bin with the separator on it, it needs doing less often and best of all, the suction declines only a little and that slowly due to the bag not filling up with dust etc. I've had the cyclones made in the PRC with rounded tops and they are very poor performers compared to the admittedly over-priced "Dust Deputy" model. As for the hose, price that out by itself! Amazing what people throw away isn't it?

I see on reading the rest of the thread that this is not the first mention by any means, but I'll add my vote for cyclonic separator.

Flexible rubber plumbing adapters with pipe clamps on them are handy for securely attaching odds and ends of brushes, nozzles etc. which might not fit otherwise. Just keep a 5/16 nut driver handy for that purpose.

As for the vacuum exhaust, I vent mine outside to eliminate dust issues, though ideally one would want an inline heat exchanger to recover at least some what would be otherwise lost. Depends on the heating arrangements too of course.: might not be necessary and some fresh air inflow is a good thing usually.

 

[flying haggis]

Found this about my vac on a site based in the states

• Can be used with or without a bag
• Dust container with cyclone system
• Low working sound
• The central unit is equipped with start/stop function
• Build in soft start system
• The build in sack filter is self-cleaning through the movement, when the central units starts / stops