Replace or repair as required depending on existing conditions. Provide VFDs on all new main pump systems. Provide variable flow systems and replace 3-way valves with 2-way valves on equipment where required by the energy code.
New main pumps are to include new or modify existing housekeeping pads and provide new vibration isolation and inertia base. Inertia base required on all pumps located above the lowest level or not mounted on grade level.