Once again, did you read the thread? It was figured out already that the device is using switching power supplies which support both AC voltage and frequency variants on the input.
yes, I read, the topic starter mentioned that his equipment consume 20 A from 115V mains, this is about 2300 Watt power.
He also mentioned example of 2 PSU which is used in his system: Meanwell HRP-150-24 and HRP-600-36. This is 150W and 600W SMPS power supplies which already have universal AC input with 47 - 63 Hz frequency range.
These PSU can be used directly. But this is just 750W power consumption.
But what about power supply for the rest 1550 Watt power consumption?
There is also another possible issue, even if he using PSU which all are compatible with all mains standards, it still needs to be tested with both mains frequency. Note that the mains frequency has leakage through PSU in a form of a ripple and/or interferences and can affect equipment functions, especially if this is device which uses sensitive measurements.
For example precise ADC can have configurable rejection filter which can be software configured for 50 or 60 Hz depends on user environment. And it needs to be taken into account very carefully especially for medical devices (which is the case for topic starter question).