The contractor who put this stuff in may be out of business, but according to their web site Delaware elevator is in business and still selling to the general public...(Non-Proprietary)

Here's some specs for their submersiable unit.

http://delawareelevator.com/manufacturing/power-units/submersible.cfm

And their contact page for manufactureing for technical assistance.

http://delawareelevator.com/manufacturing/contact.cfm

Suggestion...Check amperes on each phase in Wye and Delta configurations. GreenPants may be on to something.

It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx