Municipalities are replacing the traditional lift station emergency back-up system – a generator and switch gear – with a Critically Silenced diesel Dri-Prime and automatic control panel. This alternative avoids pump station problems including primary power, switch gear, and sewage pump failures. The main benefits include the availability of a back-up pump at the station instead of only back-up power and the elimination of expensive transfer switch gear.

Critically Silenced enclosures have been popular in this application because some units achieve sound levels as low as 63 dBA at 30 feet. This is an advantage for lift stations located in residential areas. Hinged, lockable doors on the sound-attenuated enclosure provide convenient access to operating controls and service locations. Also, the skid-mounted unit can be unbolted and removed from the DOT highway trailer for job site convenience.