Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE User Manual
Page 36
Operating Instruction
36
8.4 Single Pump – System Curve Compensation
The Technovar can automatically compensate for system friction losses due to increased flow.
Tables are available in most pump catalogs, indicating the amount of friction losses that can
be expected in various sizes of pipes at different flow rates. Use these tables to determine the
friction losses for the pipe size you are using at maximum flow rate.
This Diagram shows a typical system curve. The system pressure set point is shown at shutoff
and pressure increase is shown for increasing flow.
Calculate the pressure required to overcome friction losses at maximum flow.
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