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 Fig. 4.5: Correlation between FAD and absorbed power when using infinite
output control. | In addition to the ARS control unit, BOGE offers an optional infinite output control for screw compressors with oil injection cooling. This control intervenes in the processes of the suction control and operates according to the suction throttle principle.
The infinite output control from BOGE is set at the factory to a production rate of between 50 and 100 % of FAD. If FAD drops below 50 %, the compressor is working uneconomically. Depending on the switching cycle the compressor either switches off or continues on idle mode. |