- Typical capacity
- For this model, a 3kg batch capacity is standard, suitable for small to medium production volumes.
- Power supply
- Units of this class commonly require a single-phase electrical supply for controls and motors, alongside a gas connection (LPG or Natural Gas) for the burner.
- Heating method
- Gas-fired burners are typical for achieving the necessary heat for coffee roasting.
- Drum type
- Double-walled drums are commonly featured, offering improved thermal stability and even heat distribution.
- Control systems
- Many roasters in this category are equipped with manual and/or digital controls for drum speed, fan speed, and burner output. Integration with roast profiling software like Cropster is often possible.
- Chaff collection
- An external cyclone for chaff collection is a common safety and operational feature.
- Temperature probes
- Multiple temperature probes (e.g., for Bean Temperature (BT), Exhaust Temperature (ET), and Ambient Temperature (AT)) are typically present for precise roast monitoring.
- Footprint
- While specific dimensions vary, 3kg roasters are generally compact, requiring a dedicated but relatively small operational space with adequate ventilation.