Drain motor for Whirlpool WDF750SAYW0.

** That is normal.

The rotor is a magnet, deliberately used in an asymmetric arrangement with the stator.

** But does it turn ?

I found a rubber band stuck inside one that stopped it turning under its on power. You need to take a look.

..... Phil

The motor does turn but it vibrates above and beyond any motor I've ever encountered. (It would be great if you installed in one of those chairs that give you a back massage.) The explanation in this video,

says the motor should have a DC input resistance of 200 ohms. Though I can understand there will be variances between every motor, this motor measures 20 ohms between the input terminals. The line draw as registered by my Sencore PR57 is just under 100 watts at 120VAC. The sticker on the motor says 40W.

Thanks for your reply.

--
David Farber 
Los Osos, CA

** That is normal - for the reason I just gave you.

The explanation in this video,

** The video id from the UK where the AC power is 240V.

** That is also normal.

** Your Sencore does not measure true watts as it does not take account of power factor which could easily be 0.5

All the numbers you quote are OK.

.... Phil

What Phil does not understand is how label requirements work in the US. If the motor is labeled "40W", then the maximum free turning running (not star ting) load should not exceed 40W, full stop. That part will have a UR label and manufacturers use the nameplate rating to calculate, in turn the entir e draw of the appliance for its label. Imagine if any random part might pul l a constant 2.2 x its rating on a whim?

If it is pulling 100 watts, and if it is vibrating, then it is clearly dama ged and should be replaced. Even low-quality appliances such as most Whirlp ool products are, typically, would not tolerate a vibrating motor in that a pplication. I suspect that a motor bearing has gone oval. So the shaft is v ibrating against the housing when it spins and starting is very hard, if at all

Again, replace it.

Peter Wieck Melrose Park, PA

Hi Peter,

This morning I hooked it up via a Kill A Watt meter.whose reading adjusts for power factor. It read between 23-32 watts. When I gently put my finger on the center of the spinning impeller to see how it would be affected, it became even more erratic. I will replace it.

Thanks for your reply.

--
David Farber 
Los Osos, CA

If the motor is labeled "40W", then the maximum free turning running (not s tarting) load should not exceed 40W, full stop. That part will have a UR la bel and manufacturers use the nameplate rating to calculate, in turn the en tire draw of the appliance for its label. Imagine if any random part might pull a constant 2.2 x its rating on a whim?

** WRONG!!

** Completely normal.

The Wieck f****it has never seen a modern washing machine pump.

Or even read my post that explains it all. What a nasty old s*****ad.

..... Phil

Off your meds, again?

I have seen several dozen, as it happens. This is a dishwasher. A properly installed pump dishwasher pump will barely vibrate. Your explanations are not much short of idiotic, but are certainly dead-wrong.

Peter Wieck Melrose Park, PA