a. CHILLER - WINTER MAINTENANCE shall include 1) Inspecting, cleaning and changing oil in purge systems. 2) Inspecting and servicing vacuum systems. 3) Lubricating, cleaning, inspecting and adjusting equipment as recommended by the manufacturer. 4) Maintenance of Condenser Tubes shall include: ● Tube brushing shall be performed one (1) time with nylon brushes between November 1 st and February 1 st for Winter Maintenance. ● Brushing must be performed prior to all acid treatments. ● Both end bells must be removed completely from the condenser before brushing the tubes; thus allowing for a straight through visual inspection of the tubes within 48 hours of cleaning or documented with pictures for Building Services designee. If required, the contractor must remove the associated piping, etc., from the end bells to the first flange to allow for removal of the end bells. If necessary, the end bells must be left off to allow for a visual inspection by the BOARD OF EDUCATION'S authorized representative to inspect the tubes. The contractor is responsible for placing the end bells back into position after inspection. ● Clean scale and foreign matter from end bells and tube sheets. ● Replace gaskets where necessary. ● Scheduling of the condenser tube brushing and/or acid cleaning shall be coordinated with the BOARD OF EDUCATION'S authorized representative. A minimum of 24 hours' notice must be given to the BOARD OF EDUCATION as to when the condenser will be open for inspection; the tubes shall have been brushed. 5) Clean equipment as required to protect from deterioration...
