A light commercial package rooftop unit should be serviced regularly. Both quarterly and semiannual services are common, although monthly service, while extreme, also has a place, especially in critical applications. Regular maintenance should take place at the start of the heating season and again at the start of the cooling season. Filter maintenance, depending on the equipment application and filter type, may need to be performed on a more frequent monthly basis.
USING A CHECKLISTMany items that are part of a routine HVAC system maintenance inspection have remained constants over the years. However, evolving technology designs and changing environmental laws have resulted in adjustments and additions to the inspection process. The checklist that follows is a blend of previously established procedures and the new methods employed in maintenance inspections.
Remember that replacing a contactor is easier and much less expensive than replacing a compressor.
Walt Jacobe is the commercial marketing manager at York, a Johnson Controls Co. He can be contacted at 405-419-6546 or at email@example.com.
Publication date: 06/19/2006