Thread Number: 44447  /  Tag: 80s/90s Vacuum Cleaners
Converting a vintage Eureka 2090A ESP into (basically) a two-speed Sanitaire QuietClean SC889-help! 		[Down to Last]

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Post# 462488   4/22/2023 at 02:21 (364 days old) by superocd (PNW US)        

I came across a 2090A ESP in wonderful condition, except for the motor, of which the bearings were pretty shot. I know that there is a two-speed Sanitaire upright (SC889), but for the life of me, cannot find a detailed wiring diagram for this machine. I'm only able to find exploded parts diagrams.

The only thing that stands out between the "regular" one-speed Sanitaires and the Quiet Clean (which is a two-speed) is the fact that there is a "motor speed PCB" (Sanitaire part # 82509), yet no other details or schematics with this part.

There is a blue wire and a yellow wire on the 82509 speed control PCB. On my 2090A, the OEM motor wasn't connected to a speed control PCB, it was indeed a true two-speed motor, with three wires coming off the motor (blue, white, black), corresponding with the wires coming down from the handle from the ESP switch.

On the Sanitaire Quiet Clean, the motor is just a generic 54352-16 or 54352-17 motor, with the standard yellow and white wires. This leads me to believe that the blue wire on the PCB connects to the blue wire coming down from the speed switch, and the yellow wire connects to the yellow wire coming from the motor and the black wire coming from the speed switch. ***PLEASE CORRECT ME IF I'M WRONG***

I drew a diagram of how I think the Quiet Clean two-speed is wired up...could anyone verify this before I order the parts to rebuild my 2090A, which will essentially be, internally, a Sanitaire Quiet Clean SC889 in a vintage body? I don't want to buy the wrong parts and blow it all up.

The second and third pictures are of the 82509 PCB and the 54352-17 motor.

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