44 Martin Place, Sydney

Being a Design and Construct (D&C) contract, Masterflow was engaged to help engineer a pumping system to serve the requirements of the new PowerPax magnetic bearing chillers, boilers and condenser water equipment. Bakerflow SW series pumps were chosen for their efficiencies at 2900rpm and less. The chilled water pump efficiencies were over 70%, and all motor efficiencies in excess of 90%. There was sufficient room within the plantroom to allow future servicing of these pumps too. With the pumpsets, Masterflow supplied inertia bases which were filled with concrete on site. Although the pumpsets were installed in a basement plantroom, the addition of inertia bases raised the pumpsets closer to a serviceable height and lowered the centre of gravity. The effect of lowering the centre of gravity significantly reduced the transfer of vibrations at certain frequencies, and lowered acoustics from the motor. A total of 18 pumpsets were supplied and installed. 14 x Bakerflow long coupled pumpsets and 4 x MVM vertical multistage pumps.