Determine the number of liters per minute or motor power

A rotary screw compressor functions best when the capacity and compressed air output align with the compressed air consumption.

It is best to replace an old compressor with a rotary screw compressor of the same capacity.

Determine the minimum working pressure.

A rotary screw compressor delivers compressed air between 5 and 13 bar. Most compressed air consumers, tools, or production machines operate at 7 bar.

Determine the consumption profile

If the compressed air consumption is erratic with many peaks and troughs, a variable speed (frequency-controlled) rotary screw compressor is the correct choice. For more continuous consumption, a conventional on-off controlled compressor is the best solution.