The SmartLung 2000 enables various compliance values to be set (simulation of lung stiffness). The smallest (at the same time also the hardest) compliance setting is 25 mL/mbar at a volume of 1000 mL.

The silicone bag of the SmartLung 2000 has a production tolerance which can lead to the bag popping out a little at the side at a volume of 1000 mL. This can lead to the compliance value deviating from 25 mL/mbar and becoming larger.

Remedy:
Use a smaller volume of approx. 500 - 600 mL to achieve a compliance of 25 mL/mbar.