- Typical batch capacity
- For this class of equipment, a '3' designation often indicates a nominal batch capacity of 3kg, though actual throughput can vary.
- Power supply
- Typically requires a single-phase or three-phase electrical supply, commonly 230V or 400V, for motors and controls, plus a gas supply for the burner.
- Heating method
- Units of this type commonly utilise atmospheric gas burners for heat generation.
- Chaff collection
- External cyclones are typically included for efficient chaff separation and collection.
- Control system
- Modern units often integrate with profiling software for manual or semi-automatic roast control.
- Cooling system
- Independent cooling trays and fans are standard, allowing simultaneous roasting and cooling.
- Motor configuration
- Direct drive motors are commonly found on units of this type for drum, cooling tray, and fan operation, contributing to quieter running.