Kaeser Compressors DHS 4.0 air-main charging system

Kaeser Compressors has announced the DHS 4.0 series air-main charging system featuring enhanced control and function capabilities, including the ability to connect to the Sigma Air Manager 4.0.

DHS 4.0 series electronic air-main charging systems provide protection for the compressed air treatment components within a compressed air system, and also help ensure reliable compressed air quality, including after shutdown of a compressed air supply system.

A compressed air network is often depressurised following periods of downtime. As a result there is no flow resistance from the network pressure when the compressors are started. The compressed air treatment components in a compressed air supply system, however, are designed to accommodate the flow rates and speeds that occur in the distribution network when the system is in load operation.

Therefore, without back-pressure present, there is the risk that filter and dryer components may become ‘overwhelmed’ by the sudden surge in airflow that occurs when the system restarts. This can lead to filter element damage and to a raised pressure dewpoint in the refrigeration dryer. As a result, contaminants such as oil, particulate matter and humidity are introduced into the pipe distribution network and the process air.

DHS 4.0 series electronic air-main charging systems provide necessary minimum pressure, which consequently ensures smooth network start-up and safe operation of the compressed air station.

If, for example, a fault occurs with a dryer or a filter, the air-main charging system is able to shut down and isolate the affected treatment line.