FCX Systems' 30 ton PCA unit offers: '#8729; Versatility - common parts; the same unit is used in bridge and mobile designs '#8729; Diesel/electric combination unit the 60Hz diesel generator can be used for emergency power '#8729; Unit frame is manufactured from stainless steel and aluminum material thus preventing rusting and increasing the longevity of the unit '#8729; Entire unit is powder coated to further protect the unit from the environment '#8729; High efficiency design to conserve power '#8729; No damper is used on the outlet the blower is driven by a VFD thus conserving energy '#8729; All units are designed for low operating noise levels 75 to 85 dBA without the diesel engine '#8729; Sizes from 15 to 150 tons '#8729; Refrigerant R22, R407c or R134a '#8729; Designed for long reliable service in the severe airport environment