Operators can also adjust the column shutter for airflow control. It is recommended to note the settings during each run for future reference when processing the same commodity.
2. Vacuum Control
The vacuum control adjusts suction pressure based on the type of seed being processed. Vacuum strength is proportional to fan speed—higher speed generates more vacuum.
Vacuum regulation is managed via a VFD (Variable Frequency Drive) located on the panel, which adjusts the frequency of the fan motor to control its speed and thus the vacuum pressure. The VFD reading should be recorded for repeatability when running the same commodity in the future.