Attachment_3-_Drawings.pdf

This document is a mechanical information sheet and drawing index for a federal contract involving hot water and chilled water pump replacement at the National Historic Trails Interpretive Center located at 1501 N. Poplar Street in Casper, Wyoming. The project is managed by the United States Department of the Interior, Bureau of Land Management.

The scope of work requires removal and replacement of four pump and motor combinations: two hot water pumps and two chiller water pumps. The specified equipment is Armstrong model 3X2X8 4030 pumps with 140 GPM capacity at 45 feet of head and 7.08-inch impeller diameter, paired with 3HP, 3-phase motors operating at 208-230/460V and 1800 RPM. Motors must be either Baldor (part number M3211T) or Dayton (part number 2NKY8B) manufactured units. Additional requirements include replacement of variable frequency drives (VFDs) for both hot water and chiller pump systems with units 100 percent compatible with the new motors, removal of the motor starter on chiller water pumps and installation of new VFDs, reprogramming of the Johnson Controls Building Solutions Metasys graphic interface for newly installed hardware, verification and analysis of chemical composition in both water systems with maintenance recommendations, replacement of the air handling unit VFD drive, and verification of shaft alignment following installation. All four pumps, motors, and VFDs must be from the same manufacturer.