So having done the 3PH to 1Ph conversion, and the drop in CFM. I could scavenge a 15hp 1ph motor if they exist, but not sure we have the ampacity to do that. Ma be stuck with 15HP 3ph. Consider we need a minimum of about 35CFM @ 90psi. The low limit on the machine is 78psi, but not sure I want to count on that to offset the lower CFM. Please advise on the following:
1. Twistair, 15HP (upgraded), 3ph, Maybe 35-40CFM: $1400 + 15hp motor.
2. Ingersol-Rand Variable speed, 15HP 60CFM, 3ph, (460V, needs a stepdown transformer), rebuild bad motor seal, $2600.
3. Compair, 10HP rotary vane, 41CFM, very low hours, $2850.
Which door would you chose? Keep in mind I would prefer this to be the last compressor I ever buy, and trying to reduce my energy cost as much as possible.
1. Twistair, 15HP (upgraded), 3ph, Maybe 35-40CFM: $1400 + 15hp motor.
2. Ingersol-Rand Variable speed, 15HP 60CFM, 3ph, (460V, needs a stepdown transformer), rebuild bad motor seal, $2600.
3. Compair, 10HP rotary vane, 41CFM, very low hours, $2850.
Which door would you chose? Keep in mind I would prefer this to be the last compressor I ever buy, and trying to reduce my energy cost as much as possible.