Thread Number: 10846
How do Electrolux Automatics work?
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Post# 117252   12/6/2010 at 10:59 (3,236 days old) by Klectrolux ()        

I am pretty mechanically inclined, but I can't figure out how the automatic part of Lux vacuums work. I see three hoses (at least in the Super J style machines) coming off of the dial (It seems as if there is a switch in there that is activated by bellows that expands?), the three hoses goto the bag compartment, the inlet right before the bag, and then one for regular pressure/outside pressure. How does this system work?

Post# 117254 , Reply# 1   12/6/2010 at 11:34 (3,236 days old) by suckolux (Yuba City, CA)        

suckolux's profile picture
It is pretty tricky, having just had a very good look at my Silverado a month or so ago, with advice from here, got it working.There was a post somewhere that sent me to description somewhere.

Post# 117256 , Reply# 2   12/6/2010 at 11:52 (3,236 days old) by scvacuumguy (SC)        

scvacuumguy's profile picture
You are close- I may be slightly off as well, but this is what I have been told and what I have seen.

The dial regulates the pressure on the membrane in the automatic control. One hose goes to the bag chamber, one to the hose inlet, and the third hose goes over to the bellows that opens the chamber.

Post# 117257 , Reply# 3   12/6/2010 at 11:53 (3,236 days old) by scvacuumguy (SC)        

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When the pressure changes in the automatic control, it sucks down the plunger that opens the bag chamber. You will notice there is a plastic piece surrounding the little plunger...more on that in the next post....

Post# 117258 , Reply# 4   12/6/2010 at 11:55 (3,236 days old) by scvacuumguy (SC)        

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The plastic bag latch terminates around the plunger and is able to be pulled down by the plunger (my thumb is on the bag latch), and the bag chamber opens. At that point, everyone is happy and takes some hits from the hookah in the background. Don't judge...

Post# 117262 , Reply# 5   12/6/2010 at 12:27 (3,236 days old) by joe22 ()        

its magic. . . .electrolux magic

Post# 117264 , Reply# 6   12/6/2010 at 12:40 (3,236 days old) by Collector2 (Moose Jaw, Sk)        

collector2's profile picture
Its actually a very simple system. It works on a difference in suction pressure. When the pressure at the back of the bag compartment (aka - right off the motor) is the same as the pressure at the front (aka the hose connection) everything is ballanced. As the bag fills suction drops at the hose end and an imballance is created. When the imballance is sufficient enough it sucks down the bellows which activates, either the latch, releasing the front cover on older models. Which then, in turn, turns the machine off or, in newer models, it simply moves a switch which turns the machine off. The controll dial merely regulates the tension put on a diaphram spring which, in turn makes it harder or easier for the diaphram to operate (eg - requireing more or less of an imballance of suction to activate )

hope that makes sense.


Post# 117266 , Reply# 7   12/6/2010 at 12:47 (3,236 days old) by suckolux (Yuba City, CA)        

suckolux's profile picture
I know I do a little dance every time mine pops open. So happy it works after all this time.

Post# 117270 , Reply# 8   12/6/2010 at 14:05 (3,236 days old) by Klectrolux ()        

Thanks for the replies. What a neat system, I figured as much it would measure the difference in pressure from the front to the back, but I wasn't sure. Too bad the Diplomat LX won't open up when the bag is full lol.

Post# 117284 , Reply# 9   12/6/2010 at 15:53 (3,236 days old) by scvacuumguy (SC)        

scvacuumguy's profile picture
Hi Doug,

What is the tube that terminates at the front of the bag housing for?

Post# 117290 , Reply# 10   12/6/2010 at 16:08 (3,236 days old) by suckolux (Yuba City, CA)        

suckolux's profile picture
Does that maybe connect to the tube inside the suction port?

Post# 117296 , Reply# 11   12/6/2010 at 16:23 (3,236 days old) by Crevicetool (GA )        

Hey kids,

take a look at this thread done well over fifty years ago now......


Post# 117299 , Reply# 12   12/6/2010 at 16:28 (3,236 days old) by Crevicetool (GA )        


Do you mean the tube that is at the most rear-ward part of the bag chamber, that goes from the bag chamber to the cord winder?

If so, that was put in place starting with the model "G" and continued (as far as I know) today - to provide a minimal amount of cooling air to the motor in the event the machine was allowed to operate with a completely clogged hose or bag. They may have (I don't know) eliminated that feature when the heat activated circuit breakers were added years later.

Post# 117304 , Reply# 13   12/6/2010 at 16:35 (3,236 days old) by suckolux (Yuba City, CA)        

suckolux's profile picture
Thanks again Rick, love when the brains bring up the little stuff I might miss. Always thought the little hole in the back was to cool the cord winder area, my bad.Somewhere I also downloaded someones older model owners manual for the Silverado, thanks again to whoever posted that baby.

Post# 117309 , Reply# 14   12/6/2010 at 16:58 (3,236 days old) by beerad (Beautiful Vancouver BC)        
Christopher...You have....

400 vacuums?? Wow...Where do you keep them all? I am very curious. Would it be possible to post some piks of your collection?



Post# 117336 , Reply# 15   12/6/2010 at 19:10 (3,236 days old) by scvacuumguy (SC)        

scvacuumguy's profile picture
I've never had any clue what the cordwinder to bag chamber tube was from. I do know that it really doesn't change anything if you remove it- unless someone knows differently.

Beerad- I'll just send some pictures of the sheds...we are slowly going through all of the crap and trashing bits and pieces. Most of them are random 70s and 80s machines that we rob parts off of. Consider about 100 of those in-stock units for sale as well (I guess those shouldn't be considered "collection" machines)

Crevicetool- Are you my Buckeye rep by any chance?

Post# 117338 , Reply# 16   12/6/2010 at 19:35 (3,236 days old) by kenkart (Mocksville, NC)        
Cordwinder tube..

I was told by an old time Elux guy it was to draw a small stream of air thru the cordwinder to cool it because it was plastic, the model G of course was metal and better shielded from the heat of the motor, it does not look like it would cool much too me!

Post# 117344 , Reply# 17   12/6/2010 at 20:54 (3,236 days old) by scvacuumguy (SC)        

scvacuumguy's profile picture
That makes a lot of sense Hans. I guess it is a tiny, tiny stream of air. When we do a basic service and cleaning on a Lux for a customer, the motor gets blown out, but not removed- so we never re-connect the hose going to the cordwinder seeing as how that would take extra time to remove the motor, etc. I haven't had one come back with a cordwinder melting!

Post# 117351 , Reply# 18   12/6/2010 at 22:21 (3,236 days old) by Collector2 (Moose Jaw, Sk)        

collector2's profile picture
Hey Christopher:

If its the tube I'm thinking of it ends in a flared rubber end that seals against the hole in the cover to which the corresponding tube is connected to. This is the tube that gives the suction connection from the back of the bag housing.


Post# 117363 , Reply# 19   12/7/2010 at 00:17 (3,235 days old) by Klectrolux ()        

Doug and Christopher, I think this is what you are thinking of. I know this is what Doug is at least. This is on the AP280. Funny how its routed this way, and on my Diplomat LX its piped through the bottom of the bag door on the hinge.

Post# 117392 , Reply# 20   12/7/2010 at 08:34 (3,235 days old) by Collector2 (Moose Jaw, Sk)        

collector2's profile picture
Hey Kevin:

Yep thats what I was thinking of. On the Canadian AP and E series it connects the post-bag port to the controll dial as the dial is in the machine and not the door.


Post# 117409 , Reply# 21   12/7/2010 at 10:44 (3,235 days old) by scvacuumguy (SC)        

scvacuumguy's profile picture
That makes perfect sense. I would imagine because of the compact size of the front dover on the Diplomat and for cheaper manufacturing reasons, they decided to disregard the original design. I wonder how much research and development it took to begin this system and perfect it as Electrolux did.

Just a tip for many people- before replacing the whole assembly if you have a door that keeps popping open, take a small wire and clean out the hose that terminates at the vacuum hose inlet. This has saved much time while doing a repair on one that keeps malfunctioning.

Post# 117412 , Reply# 22   12/7/2010 at 11:22 (3,235 days old) by Klectrolux ()        

I've always wondered about Electrolux's R&D in general. Some of the designs, features, and way the machine is built is just pure genius.

Post# 117430 , Reply# 23   12/7/2010 at 14:51 (3,235 days old) by suckolux (Yuba City, CA)        

suckolux's profile picture
I think they designed some of the best ideas into their machines. Of course this may have made them a bit pricey and heavy, my Silverado sure is, but that is what I love about it.29 years, still like new?? Yea, worth the money.

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