I have an Ingersoll Rand single stage 60 gallon 230 volt 3 hp single phase single stage air compressor.

We bought a CNC table that requires 95psi min to run. I had to tweak the pressure switch to make the compressor maintain a minimum of 95 psi. We blew a start capacitor within a month, and now a second one within 2 months of that.

I am trying to figure out my options.

Guessing in order of return
keep replacing capacitors $
reduce motor pulley diameter $
get a 5 hp motor $$
replace capacitor, sell compressor and get a 2 stage $$$$.

Suggestions or other options? If the only realistic option is a 2 stage, any recommendations on brands, and things to look for?

Thanks in advance

Supposedly it is supposed to take 100 PSI @ 5cfm. If the psi drops below 90 ~ 95 the table shuts down. I had to adjust the switch to keep the tank above 95.

The compressor says it has 11.3 @ 90 PSI. I did adjust the cut in setting and it works for about 2 months and then blows the start capacitor because it is starting the motor so often. When the table is running it is a continuous drain.

I am thinking that with a 2 stage and the higher PSI it can pump up to the motor won't be starting so often.