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VARIABLE FREQUENCY DRIVE REPLACEMENT AT LIBRARY
The work consists of replacing the existing variable speed drives with new high efficiency
variable speed drives. In addition, the supply and return fan motors shall be replaced
with premium efficiency motors. The existing pneumatic control system controlling the
variable speed drives shall be replaced with electronic pressure sensors and related
wiring. The work includes but is not limited to:
1. New variable speed drives
2. New premium efficiency motors
3. Demolition of existing drives and motors
4. New electrical connectors to new components
5. New direct digital controls for variable speed drives
