Originally Posted by
Malcolm McLeod
+1 on the long run-time. Anybody looking at rotary screws needs to consider it. The oil has to heat up, so longer run times are required - longer than in the average small shop (commercial or hobby). Low usage just ruins them.
For our distributed instrument air needs we use a lot of paired Atlas-Copco GX5 (5Hp) units, but in addition to the OEM receivers, we use 2 additional receivers (800 gal ea.), and we deep cycle the pressure (250psi OFF / 80psi ON) , all to get decently long run times. ...in the desert, so space is not an issue.