Dyson blocked cyclones

[dennis]

Not all vacs have the motor cooled by the air with the dirt in it. That's the cheap option.

[Mike Clarke]

Things may well be different for the OPs DC54 but fine powder like plaster dust can seriously clog the cyclones on our DC08. And I don't mean raw plaster getting wet and setting. Sucking up lots of brick and plaster dust after bashing out bits of walls is a sure way to end up with blockages. I suspect it's some sort of electrostatic effect causing the fine particles to stick to the cyclone surface. The fluffy powdery coating on the bores of the cyclones builds up and appears to reduce the spinning effect on the airflow with the result that much of the fine dust doesn't get centrifuged out and passes straight through to block the filter.

After some building work our DC08 got to the state that the filter needed washing after every use. Completely stripping down and cleaning the cyclone following the instructions in

restored the performance back to new condition.

[Reentrant]

HCl should dissolve CaSO4. It's a matter of solubility, not acid strength.

[DerbyBorn]

Dyson and Henry are aimed at different users. A Henry is a utility suction machine - a Dyson is a convenient carpet cleaning tool.

I wonder if Static Electricity is a factor with blocking?

[Chris Hogg]

I am not convinced. Merely writing a chemical equation doesn't mean it will happen. If the product of the concentration of calcium ions and sulphate ions in solution exceeds the solubility product for calcium sulphate, it will precipitate.

[Richard]

Henry is a vacuum cleaner. Dyson is a fashion statement.

[tabbypurr]

Partly - they are also vacs that are good in some ways. None are perfect.

So what would be perfect? Maybe a Henry with an added cyclone before the bag filter.

NT

[AJH]

Tim

I blew the cyclones out to back flush them and clouds of fine dust came out of each of the cyclones I could see. Some of the silicone rubber nozzles folded inside from the pressure. This enabled the vacuum cleaner to run without triggering the internal baffle.

When I took the canister off to empty it I noticed a piece of wood had been sucked into view, I must have missed this when I rodded the final bent section of tube.

Anyway it is working fine now.

AJH

[Richard]

I really don't get that into vacuum cleaners. Ours is a Miele cylinder (not actually cylindrical) cat and dog hair thingy. It sucks, but in a good way. For the workshop (shed) I have a Titan - Screwfix wet & dry. It sucks, in a good way, but very noisy which doesn't matter in the environment where it's used.

[DerbyBorn]

Remember "Hoover beats as it sweeps as it cleans" The beater bar was a good feature - the brushes on a Dyson do a similar role - I like the way the carpet pile stands up if the cleaner is drawn backwards in the right way to lift the pile. Makes the carpet like new!

[T i m]

<snip>

Nor did I until I was looking for a very quiet one because of my Tinitus.

Yup ... and what we ended up with, thanks to a friendly local appliance shop and my sound level meter. We generally use it on less than 'Max' power, simply because it's quieter still on the lower settings and still works well (demonstrating we don't generally need

3kW cleaners if they are designed properly).

I have an old Henry down there, have just given a Dyson multi-cyclone [1] to the charity shop and may do the same with our little used bought-from-new DC01.

Daughter has (temporarily?) nicked back the Dyson V6 Animal she bought us a while back (and loves it for it's convenience and manoeuvrability) and Mum seems happy with her Gtech 2 combo (apart from at 88 years old she finds pulling the canister off and putting it back on the handheld bit quite challenging!).

Cheers, T i m

[1] Picked up from Freecycle years ago for my step daughter and it was being given away because it was 'faulty'. It was actually just blocked up (everywhere) and a good clean then wash in the batch seemed to fix it and it carried on working ever since.

[RJH]

FWIW I bought a Bosch Arriva (I think) 1400W cylinder hoover from a charity shop for £4. OK, new filters and bags £15, but a marvellous thing. Much stronger suction that the Sebo (lifts the carpet), light, compact, and pretty quiet - especially on the lower settings.

[DerbyBorn]

T i m [e-mail]> wrote in news: [e-mail]:

I sometimes feel inadequate as I have only had one vacuum for the last

20 years. I threw away my Hoover Constellation - why didn't I sell it on EBay?

[tabbypurr]

it really was, it enabled a 175-300w machine to do a satisfactory job, and cleaned deeper than others.

neither of mine do. The Hoover beater bar smacks the whole carpet back down after the suction lifts it up, it's very effective.

NT