Campbel Hausfeld VT pump change advice

[interlinkm74]

Hi,

I think i'm needing a bit more cfm for my plasma cutter. The plasma needs a continuous 70 psi. Its not too bad but at MAX my 150 lire campbel Hausfeld compressor is probably only putting out about 8cmf @ 90psi, which means the pump is running for long periods of time. The compressor has the standard 3.2hp motor.

3.2 Hp
* 3450 pump RPM
* 60 Hz
* 15 Amp
* 230/240V

My question's are what is the max pump upgrade I can do using that motor? Although i'd like to reuse the motor to keep costs down should I upgrade both the pump and motor to give me more than 14cfm, although i'd like to stick to using 240v rather than 3ph.

Thanks

 

[rtbcomp]

To be honest if you look at the price of pumps and compare that to the price of a 2hp compressor and the hassle of swapping the pump you may be better off running two comps. together.