Carrier Transicold’s ComfortPro diesel-powered auxiliary power units have been upgraded to help improve reliability, reduce maintenance and double the length of the service interval. Enhancements include an automotive-style multi-V drive belt and a tensioner engineered to automatically adjust the belt to help maintain full voltage output of the generator when the APU is running, eliminating manual belt tensioning. The system also now uses high-performance CK-4 heavy-duty engine oil formulated to enable the maintenance interval to be extended from 1,000 to 2,000 hours.
