Recently acquired a 2spd Eureka 2090A. Motor is dead. Want to use Sanitaire 2 spd

[superocd]

I knew the original motor was toast based on the grinding sound and extreme difficulty in spinning the fan (bearings were shot beyond repair, and Eureka/Sanitaire bearings aren't the easiest to service), however, the bag, base, hood and handle were in excellent condition and I knew that 2spd Sanitaires exist, and thus my plan was to throw a 2spd Sanitaire motor into this machine and make it a sleeper.

However, it seems like the 2spd Sanitaire (QuietClean SC889) has the same part # for the motor as the single speed 7A Sanitaires -- 5435217, which means that the motor is being stepped down by some other means (maybe a stepdown board), and not thru the windings as was the case with the old OE motor. What gives? Is this an error (wrong part #) or am I missing something here?

How are modern two speed Sanitaires put together? What do I REALLY need to make this 2090A run again, which has everything but a motor?

 

[kirbyklekter]

Hmmm

I have 5 sanitaires and wasn't aware there was a 2-speed model. I'm wondering if the two speed is a Eureka made Sanitaire or a newer made by Bissell or other. I'm guessing that this two speed is really an ESP Eureka motor that adds a half amp when you slide the button on the handle forward or backward. It's a good strong motor if it is an ESP motor.

 

[superocd]

Yeah, Sanitaire actually has a 2-speed for sale

It's called the Quiet Clean SC899. It has a switch on the loop handle to bump it down to a lower speed. Probably for hotels, hospitals, etc so they can clean hallways and common areas without disturbing anyone.

However, the Eureka ESP had a true 2-speed motor as it had the additional wire coming from the field coil. The Sanitaire Quiet Kleen seems to have the exact same motor in the SC886 and other non-5A Sanitaires, which is a 7A 1-speed motor, as the part # for the Quiet Kleen motor is the same for a standard 1-speed 7A unit such as the SC886--only two wires are coming out of the field coil in the 7A motor rather than the three in the ESP 2-speed.

I can't find a wiring diagram for the SC899 to confirm what's going on under the hood. I almost think that the part # listed for the SC899 motor is an error.

 

[paul]

Does this help you at all?

From thinkvacuums.com

 

[kirbyklekter]

It can get confusing

I've got an SC888 Quick Clean red single speed 7amp Eureka motor. It's at least 15 years old. They still make these and I see them listed as classics. The red line were always the SC Sanitaire Commercial cleaners and the blue line used to be for domestic home use. It was a little dressier than the reds were. That's changed since Eureka sold. Now I see black models and blue models called Sanitaire and are made by different companies.

Quiet Clean/Quick Clean, different machines and I could see the confusion getting parts mixed up. Have you tried Hesko Inc. for a schematic of your model?