rotary screw compressor system oil flooded, fixed speed design contained in soundproof cabinet, compressor with (1) ingersoll rand "thermal mass" TMS250 cycling refrigerated air dryer, SR # TMS250-503/3862, max allowable pressure 16 bar, refrigerant 5.8kg of R134A electric's 3/50/380-420 volt, min ambient temp 0/143 degrees c, max inlet temp 55 degrees c, (2) ingersoll rand IGRP/IRHE 706 high efficiency pre-filters, (1) domnick hunter CP375 activated carbon tower filter (oil vapor removal > 0.003ppm),