Reddit mentions of NIDEC MOTOR CORPORATION (Emerson / US Motors) 5470 3/4 Multi HP Direct Drive Fan & Blower Rescue Moto

You either told the parts desk the wrong info or it was the parts desk guy's first day on the job. You cannot use a 230 volt motor in place of a 115 volt motor. You need a single phase motor.

Any universal blower motor should work for you as long as you match up the horse power and rpm rating. Many universal blowers have a horsepower range, so make sure to match up the capacitor to the correct horsepower rating.

Here's an example of a common universal motor we carry on our trucks:

NIDEC MOTOR CORPORATION (Emerson / US Motors) 5470 3/4 Multi HP Direct Drive Fan & Blower Rescue Moto https://www.amazon.com/dp/B00QW26R20/ref=cm_sw_r_cp_apa_jlxQBb4DKHXJW