Using Airflow control & Replay assist

This article covers the workflow for Cropster's Airflow control/replay feature. 

Note: On Giesen roast machines the airflow is controlled by the drum pressure. Drum pressure control, and Airflow control are used interchangeably in the following article.

If Airflow control is currently in beta for your specific roast machine, and you haven't been invited to participate in the beta program for this integration, but you are interested in participating and testing the feature, please sign up here.

Beta means that the features are being tested with a select group of users to help us identify minor flaws under everyday conditions that we cannot reproduce internally. Therefore, it will be necessary that you share feedback with us and let us know whenever you come across some unexpected behavior.

Setting up the Airflow control measurement

If the Airflow control measurement is not shown from the RI's Machine preferences, the control measurement must be added before it can be set up.

Note: The following applies, if the roaster has already been successfully connected to the computer you have set up. If not, find more information about your machine's respective setup manual from our Connect your roast machine page, or our Helpdesk.

Cropster's Airflow control allows you to regulate the airflow directly within the RI. To learn more about how to set up Airflow control for your roast machine, please see below:
  1. Open the Roasting Intelligence (RI).
  2. Go to Account > Preferences > Machine tab. 
  3. Scroll down to the Airflow control (or Drum pressure control) measurement and select the option representing your machine. Examples are included below for your reference:
  4.  Save your changes and restart the RI. 

Once you have set up a profile with a reference using Airflow control, the profile can also be replayed. This means Cropster automatically reproduces the airflow settings applied during the creation of the profile based on bean temperature. 

The Airflow control bar 

The Airflow control bar is in the bottom-right corner next to the machine's measurements, and can be hidden by clicking the Hide () button, and shown by clicking the All button.

Roasting with Airflow control

Start your roast as you usually would in the RI. Now, instead of manually adjusting the air supply at the roast control board, use the Airflow control bars at the right-hand side of the RI.

  • For small adjustments, use the + and - button.
  • For big adjustments, use the Control bar by dragging and dropping the slider.
  • For instant adjustments, click the percentage values shown on the Airflow control bar to instantly adjust the air value accordingly.

Replaying a roast 

As soon as you have recorded one roast with the Airflow control bar, set this roast as the reference to enable Replay assist. Learn about roasting with Cropster's Control & Replay assist features.

Never leave the roast machine unattended while replaying a roast. Cropster replays the roast and captures the details, but you are always responsible for monitoring the roast machine to ensure it is operating safely.

Congratulations! You are now ready to use the Airflow control assistant!

Thanks for being a Cropster customer! If you have feedback, questions, or concerns, please feel free to send it to your representative or directly to

We design and make alterations to our software based on user feedback, so we look forward to seeing what you have to say!