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The draft hood and the down-flow bench are both equipped with Lindinvents 2-mode air flow controller FLL.

The set work flow is maintained with high accuracy via damper throttle control. FLL continuously measures the air flow via the internal flow meter which is connected via hoses to the measuring flange.

Electric interlock contactor EFK can be connected to the controller. EFK breaks the voltage to electrical outlets after adjustable time in case of insufficient flow. This is a safety measure to avoid explosions, for example when handling flammable substances.

FLOCHECK F is used as user panel (AP). FLOCHECK F displays status messages in plain text and indicates alarms and the current operating mode.

The airflow can be temporarily set to a specified reduced airflow via the drawbar monitor.

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