re: Why can't S&WB get the pumps to run?

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Not sure they are VFDs. They just convert from 60 to 25 for the older pumps.

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The difference between those two possibilities is pretty much exclusive to programming.

Either way, you need a rectifier (a series of diodes + capacitors that convert AC to DC) followed by an inverter (transistors controlled by low voltage programming to convert DC to AC). I don't see the benefit in equipment that converts 60hz to exclusively 25hz given that it's fairly easy to include 1-24hz, but I'm not familiar with how these old arse pump motors work.

Sex Rooms

Payroll fraud and a ‘secret sex room’: Troubling allegations at New Orleans S&WB

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In 2021, a filter gallery employee filed a public whistleblower complaint that accused managers of using taxpayer dollars to build a “secret room” inside the Carrollton plant where a select number of employees would bring people to sleep with both on and off their shift. Verite interviewed two current employees and one former worker from the Carrollton Plant, who spoke on the condition of anonymity for fear of retaliation. In their interviews with Verite, they confirmed the existence of what one employee described as a “secret sex room.” One employee provided a video of it, showing couches, a refrigerator, a microwave, a TV and a shelf full of framed photos of nude women. The anonymous workers said that more baffling than the allegations is the lack of a strong response from the Sewerage & Water Board. “Ain't nothing being done about it,” one current employee said. “And if you do report anything, they tell you that you need to worry about yourself, don't worry about nobody else.” All the employees who spoke to Verite said the problems in their office got worse as Ware was promoted to higher positions, and said he was one of the central people driving the troubling workplace culture.

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Next on the list after they fix the pot holes in the street.

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The multi pump allows for cycling the pumps so 1 pump is not always run. You can also use more or less pumps depending on the demand along with varying each pumps speed.

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That's sounds way too complicated for the average Latavius to master.

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Is there anything in New Orleans city government run on a first world level?

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Racketeering.

13%

I used to work in a turbomachinery shop.
We got a centrifugal oil pump from swb to overhaul. We’re the oem, the original bom was from the 1920’s. Westinghouse. Every part on that thing was broken.

If an oil pump is in that condition, I’d hate to see the rest of their equipment.

LINK

mchias, that's a lot of good information but as fightin tigers mentioned, S&WB have some old pumps that actually run on 25 hz power. They have a dedicated 25 hz power grid that runs from their power complex to older pump stations throughout the city. They have/had five 25 hz generators but parts for those are not available so not sure how many are actually operational. Because the old generators are becoming less and less reliable, they've had to build frequency changers to convert standard 60 hz to be used on the 25 hz grid.
They convert the 60 hz power to 24 hz using a motor/alternator machine that has a 10 pole motor powering a 4 pole alternator (720 RPM).

Thought that you and THRILLHO might find that interesting.

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A water Board on the take.

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This guy gets it.