Clean.....or much cleaner

[vacu-finder]

The deal with amperage. I know that is just a sales pitch. When you work on Vacuums and take a look at a lot of motors you will see those tiny single stage motors that pull 12 amps. They scream like a banshee..but they do not have the airflow. Cental Vacs accomplish this by having multiple stages and huge motors. I.E. 550 Airwatts should be good for about 3500q.ft. but yes depending on how many inlets and feet of pipe, elbows etc...
Like Kirbys for there great strenght, durability and will outlast my lifetime no prob!

 

[tolivac]

The NSS M1 motor is LARGE-and can draw 11-12A it runs COOL and at a lower speed.It turns a fan that is close to 8" in diameter.-and it has large, thick, blades.But keep in mind when someone says "12A motor" that means the max power the motor draws during tests in a lab before the motor overheats or flies apart.12A is the max cont power the motor can draw.In a vacuum it is considerbly less.Esp if the motor only turns suction fans.If it turns the brushroll-that loads it more.

 

[gsheen]

dyson filters

"Dyson filters can CLOG causing loss of suction or airflow.why do they have you clean or replace it?"

Dyson filters clog when the users don't follow the instructions. If you over fill the machine past the max mark the filter will get dirty,

As I sell & serviice them in our shop I always like to test them, I have emptied my machine everytime it gets to the max mark no later and on purpose havn't washed my filter in over 3 years , it hardly has any dust on it.

Most customers don't even know they have a filter
I had a customer move to SA from the Uk and brought her dc04 to us complaining of poor suction, when I asked her when last she cleaned the filter she looked suprised and said she didn; know it had one, the machine was 10 years old



The industrial cyclones used in woodshops are positive cyclones , if you read dysons book this is what took hime so long to develope , the cyclone in a dyson is a positive and negitave cyclone , nothing at all like the industrial ones.

 

[blackheart]

Dysons

They don't lose suction they do lose airflow though, when everything is fully clean it can pull a 1.5 on the baird guage and when it's dirty it doesn't pull anything. I feel that the air path is too complex for air to flow freely. I have the DC-17 which has the root separators. I typically empty it after each use or two but i still have this feeling that fine dust may be coating the insides of the cyclones. Just my two cents on it.

 

[tolivac]

In dustrial cyclones can be either positive-fan blows into the cyclone system-the old high school woodshop-which meant EVERYTHING went thru the suction fan BEFORE the cyclone.We loved to toss woodblocks into the unused suction openings on the system-you blocked them when the other machines in use-anyway loved the CLANG as the wood peices went thru the fan turned by a 5Hp 3Ph motor.You then heard the PEICES rattling around and around in the cyclone before dropping into the waste bin.Now for the NEW high school woodshop-the cyclone in that one could be NEGATIVE-the cyclone was BEFORE the suction fan.the discharge of the fan blew into a baghouse type filter.another 5Hp fan.so a woodblock would rattle down that cyclone INTACT and fall into the bin.In both systems the fine dust-like from sanders,bandsaws and scrollsaws-would go into the baghouse filter on both.Never saw the fan in the direct air system-would have to imagine it would be pretty massive to withstand the inpact of the wood blocks.and would think the fan would get loaded from fine dust.I was one of the folks that emptied and tended these units.Was interesting and dusty duty-emptied after each shop class-for fire safety.and no metal or rags allowed in those systems-those could react with the sawdust and cause a fire.Torit,I vaguely beleive was the maker of one of them.New unit)old one-unknown.and for the Dyson vacuums-many users just don't understand it is a dump bin vacuum-like a dump bag vacuum,it has to be emptied after each use.That prolongs filter and dump bag life.Many users treat the Dyson and other dump bin,bag vacuums like a paper bag vacuum.they dump it when it is packed.I have looked into the cyclones of my Dyson vacs-yes they get coated with fine dust.Probably static attraction of the plastic-don't have this with grounded metal cyclones.

 

[gsheen]

the cyclones do get a fine coat of dust on them , when we service them we strip the cyclones down and wash them out, on some of the older model dc08's and o7's the cylone can actually clog when they are over filled to many times .we clean them out and they are as good as new again. the newer 14,and other models have a better cylone system that is very difficult to clog , though some customers do manage it but then they are very special

 

[vacu-finder]

Just quoting you here Blackheart...
You wrote...

They don't lose suction they do lose airflow. I feel that the air path is too complex for air to flow freely. I have the DC-17 which has the root separators. I typically empty it after each use or two but i still have this feeling that fine dust may be coating the insides of the cyclones. Just my two cents on it.
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Tell me what fun is it when you Empty the dirt bin after every cleaning, does not make sense. And how many people actually do that.?
You also mention that the Air flow thru the Dyson is to complex to flow Freely.
I wondered about that when i first laid my eyes on the Dyson.
Every thing is coming together now..

 

[blackheart]

I doubt the typical user does, i do it cause while i do like to watch the dirt collect i do not like to look at it sitting there so i empty it out, i'm not a fan of the baffles in the dust cup though i prefer to watch it spin...i never really understood the point of those

 

[gsheen]

The baffels in the dust cup are to stop the dirt spinning up the side and cloging the cyclone especially on the smaller capacity machines.

 

[gsheen]

air flow

The cyclones on a dyson increase the air flow by making the air spin faster.

when checked it on the airflow meter these machine measure allot more that their competitors.wit or with out bags.
Only the dirty air ( I hate that word makes it sound bad )have more air flow at the cleaner head

 

[blackheart]

Strange you and i get completely different results, in terms of airflow the Dyson is one of my weaker machines it pulls a 1.5 on a Baird airflow meter. the only machines that i have that pull less are my tristar MG2 and my compact saniataire thingy. I've tested some of my other machine and if i recall my Electrolux Silverado pulled about a 3 with a dirty bag and about 4.5 with a clean one. what was really surprising was my little Riccar canister, which is no longer mine, had the most airflow at about a 6 maybe even 7. My kirby G6 at the end of the hose pulls about a 6.5 and at the motor housing on low speed pulls a 10, I"m going to do some re-testing as i lost my chart.

 

[gsheen]

yes but I am compairing it to normal vacuums not Kirby's.

I am also not testing it at the end of the hose but at the brush bar , I have a huge test rig that we use to measure the air flow and lift of a vacuum on the carpet.

Also remember I'm 220volt , I have noticed that thier is a slight suction differance between the 220 volt motors and the 110volt.( we get 110 volt in for conversions from people moving to SA)

what is also dirfferant is the noise level, the 110v machines are much noiser.

I have a little aeg( what you guys now call electrolux ) that has huge suction its unreal but it almost cracks its top every time you close up suction.

I'll find my charts awell to give you the right figures.