Sanitaire sc684 question?

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dustin

dustin

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Jan 12, 2010
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ok. so we finally got a new vacuum at church, a Sanitaire sc684. It works great and is very powerful, but I have already replaced the belt twice. I would guess that i have used it for maybe 3-4 hours max on mostly flat carpet and rubber backed door mats. It will work fine on the flat carpet after the belt warms up, but when I go onto the door mats, the brush starts stalling out immediately. If i replace the belt, it will work on the door mats for about 20 seconds and the brush stalls out again. After that, it only gets worse. The vacuum was bought brand new last week, it has the 7 amp motor, shakeout bag and vibra groomer 2 brushroll. The belts are genuine eureka sanitaire belts. Could I use a belt for a Hoover Convertible since it would be tighter? Any info would be greatly appreciated!
 
Yep, use a Hoover Convertible belt instead, especially of it's a Pancake motor Sanitaire, the tighter belt means less slip and more grip... :)

I put a Hoover Senior belt(same thing) on my ZC-880 a few months ago and it's still working great, the Eureka RD belts I was sent burned off terribly fast causing the symptoms you describe... :)

I still have two spare waiting to be put into use hanging on the 'taire's bag spring... :D
 
THANK YOU! I put a convertible/ senior belt on it yesterday and its working absolutely perfect. the brushroll doesnt slow down at all now.
 
Hoover Belts...

You may want to be careful with using the Hoover belts. They are significantly tighter as the design of the Hoover uprights have the roller in closer proximity to the pulley. Having the excessive tension on the motor can and most likely will eventually kill the bearings, especially if its the 5 AMP motor. That is alot of strain on the motor all together honestly. It is to your discretion as to what belt you choose to use but be careful. You may find yourself rebuilding your motor. Sanitaires are notorious for going through belts more often than bags. Thats just the nature of them so it seems. I have heard that the Koblens brand (transparent looking) belts fit more properly and are made of a different type of rubber allowing much longer use. Perhaps that would be a better alternative?
 
Oops

I just now noticed that you stated you in fact have the 7 AMP motor. But nonetheless I still recommend that you reconsider the Hoover belt option. ;)
 
7 amp motors

Sanitaires with the 7 amp motor are just too powerfull. I had a s670 and it would stall the brush roll with a new belt. You need to adjust the height setting up which will help some. I had a 7 amp motor put in my vintage twin power automatic and it works fine. Back then their was no height adjustment setting, go figure......


Bud
 
"Sanitaires are notorious for going through belts more o

That's cos for whatever reason, the distance between the motor and brushroll has either changed, or the diameter of the Brushroll or puley has changed since the RD belt was conceived, so, the belts are slacker than they would be on say a Eureka 260, and therefore the more powerful motor burns through the inadequately tensioned belts... :)

The Hoover belts are perfect to redress the balance of tension and performance, I didn't believe it when I was told to use them, but now I do, I haven't even burnt through the first Senior belt I bought yet, and still have two spare, and no signs of any bearing troubles, and my Sanitaire's motor is the 240v equivalent to the 5 Amp pancake motor... :)

I really wouldn't recommend using Hoover belts on the Blender motor models though, but they're weak enough that the RD belts are fine, apparently... :)
 
I tried moving the height adjustment up from 1 to 2 but the brushroll was just throwing everything out behind the cleaner. the hoover belt seems to have stretched a bit because it will slip a little now on heavy door mats, so im really not too concerned. I just ordered new brushroll bristle strips for my 6.5 amp eureka with vg2 and when they come, i will try the hoover belt on that as well because it has the same problem.
 
I think that if the carpeting is too shallow, then it'll end up flicking things out the back, on our carpet (Hotel stuff, so commercial grade), I have the Dial-a-nap set to 3 (out of 8 positions), and that does fine, anything lower and it bogs down, and anything above 4 and I need to wear steel-toed shoes... :S

I have noticed that on rugs and some mats, the brushroll (VGII) will slow down significantly, but it still spins fast enough without any slippage, it just sounds like one long fart though... :P

Not sure what else to suggest really, aside from changing the carpets to something a little deeper... :)
 
I wonder if changing the brush roll to a 4 row brush roll might help. I've included a link for one below. We were having a similar problem with the Sanitaire at work, and I replaced the VG II brush roll with this aftermarket. It helped a lot. When you stop and think about it, glued down carpet really doesn't need agitation. You just need a vacuum to sweep up surface debris. I suspect that the nubs on the VGII brush roll will easily bog down on flat glued down carpeting. Though I don't that for sure. But it is true that a round belt won't last as long as a flat belt. That's just what you get with a Sanitaire, or a Hoover Convertible, etc. [this post was last edited: 2/27/2011-16:01]

http://vacpartsplusstore.com/catalog/index.php?main_page=product_info&cPath=2_41&products_id=788
 
I would have to agree about the all bristle brush rolls for the Sanitaires. You can even get a Vibra Groomer I helix brush roll completely with bristles.

It makes sense that the beater bars would just be hitting the low pile carpet too harshly since it is glued down in most institutional and commercial settings, and since there really is no deep pile from which to "beat out" the dirt. All you need are the bristles to sweep dirt into the suction path. The beater bars only seem to do their job on thick wall to wall carpet that is only stapled down at the baseboards, or not affixed to a floor at all. Glued down carpeting seems to present a completely different vacuuming challenge for vacs - the physics of dirt removal is somewhat different.

Do we have more people with experience using all bristle brush rolls in Sanitaires? Would be great to get a consensus on this....

We are thinking of buying a Sanitaire Contractor SC883 for our synagogue where I work. Our carpeting is mostly glued down low pile wall to wall, with a few hall mats here and there. Will we have the same belt burn-out problem if we order the 7amp SC883 with an all-bristle brush roll?

http://www.thinkvacuums.com/sanitaire-vacuum/sanitaire-sc883.htm
 
That Sanitaire SC883 looks like a real work horse. But I cant imagine using a machine like that on a carpet that is glued down. I recently used my Ultimate G to clean my Mom's office suite as the cleaning crew that the building has hired is horrific. The rug is a commercial style berber carpet that is glued to the floor and it was very dirty. I havent seen what the cleaning crew uses but my mother says their machines look like they are about to fall apart. I had told my mom to take the Lux Epic 6000 to the office since it doesnt weigh much, but she said asked if I would just clean it for her. I have never used a Kirby on a glued down carpet and I don't think I will be using it there again any time soon, I should have just used the Electrolux. Ive never seen the Ultimate G skip across the carpet so badly or have a brand new belt slip like it did on this carpet. The Sanitaire seems to work on the same principle as a Kirby, as it seals to the carpet and lifts the rug to beat and sweep away the dirt. It would be impossible for a machine to "lift" a glued down carpet so maybe something like a commercial WindTunnel would be a better choice?
 
4 Row...

I have one of those black w/orange strip 4 row rollers. Works really well but I ended up burning belts even quicker with it. It might act different with commercial carpeting perhaps, idk. There is a CWP wooden 4-row made for the F&G uprights (I have one of them as well) and it seems to be the best I've found so far for belt life. It doesn't look all that aggressive but surprisingly it agitates and grooms just fine. They go for peanuts on e-bay too, like $15-20 if I can remember.
 
I think the black & orange 4-row BR burns belts faster as there is more resistance from the bristles sweeping the floor, and with the slack RD belts, then they'll just burn out faster, not sure about with Hoover belts though... :)

Just don't put VGIII strips in one if you intend to put it into a Sanitaire, it'll burn all belts off in no time... :P
 
For the price, I think the black & orange VGII being $20 is more affordable, compared to a VGI at almost $50... :S
 
But David, I think the Vibra Groomer III with the black and orange brush strip stiffeners is still too harsh for low pile glued on carpeting... the stiffeners make the bristles very harsh. The only Vibra Groomer you should use is the VG One with regular flexible normal bristles only.

If you want to save money, you can then just get a regular bristle-only, wooden Eureka "Disturbulator" brush roll. I think these cost less than $50. :-)
 

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