G45 RETRO

G45 RETRO

The G45 retro holds a special place in the KIRSCH + MAUSSER product range. Manufactured in the classic retro design of the UG retro and equipped with the key technical features of the G roasters, the G45 retro combines an elegant design with enhanced functionality even in its standard version. Furthermore, additional options such as pneumatic operated opening flaps on the bean container, roasting drum and cooling sieve outlet, ensure that green and roasted coffee beans are processed reliably. These functions are controlled by either simply pressing a button on the control panel or fully automatic.

If you are reaching the capacity limits with your UG retro but still want to process smaller batches, the G45 retro – with its flexible drum volume between 20 and 55 kilograms – is the ideal choice.

BENEFITS FOR YOUR COFFEE

Special vanes inside the roasting drum that were specially developed for the G45 retro ensure that the coffee beans are mixed evenly during the roasting process, producing a homogeneous final product. In addition, the G45 retro offers the following benefits:

  • Frequency converter to adjust roasting air volume
  • Precise airflow thanks to the traditional “flavor wheel”
  • Intensive cooling
  • Powerful fans
  • Reproducible product quality
  • Independent drives for the drum, mixer, and roasting and cooling fans
  • Additional separate cooling sieve outlet
  • Easy to clean thanks to large maintenance openings
  • Reduced dust emissions thanks to additional cooling exhaust air cyclone
  • Frequency converter to adjust drum rotation speed (optional)

VERSION

G45 retro
Batch size (kg)
20 - 55
Roasting times (min)
10 - 20
Roasting capacity (kg/h)
100 - 150

CONTROL

All of the G45 retro roasters are equipped with thermocouples as standard to document the roasting supply air, product, and exhaust air temperatures. The basic version is controlled manually. Alternatively, the G45 retro roasters can be equipped with semi- or fully automatic controls via a touch panel.

  • Recipe management with up to 20 user-definable recipes; saved settings can be reproduced safely and automatically (semi- and fully automatic control solution)
  • six temperature levels can be defined in advance for each recipe (semi- and fully automatic control solution)
  • Visualization of the roasting curve on the touch screen (semi- and fully automatic control solution)
  • Burner output can be selected manually or automatically from a recipe (semi- and fully automatic control solution)
  • two additional potentiometers allow for a mechanical regulation of the air volume and burner capacity in steps of 1% (semi-automatic control solution)
  • Interfaces for external software systems from Artisan and Cropster (semi- and fully automatic control solution)
  • Process reliability guaranteed via pneumatically controlled opening flaps on the bean container, roasting drum, and cooling sieve outlet (semi- and fully automatic control solution)
  • automatic heat shutoff when the desired final temperature is reached
  • automatic safety shutdown of the burner when the temperature limit is reached

FEATURES

BURNER
The burner used in the G45 retro can be configured for use with natural gas or propane, depending on the specific requirements. In addition, it stands out due to the following features:

  • Higher capacity
  • Continuously adjustable for a more flexible roasting process
  • State-of-the-art safety technology, including gas and flame monitoring

ROASTING CYCLONE
The UG retro’s roasting cyclone features a large, wheeled chaff collection container made of aluminum, making it light and easy to empty. In addition, the roasting cyclone stands out due to the following features:

  • Individually adjustable
  • Roasting fan above the cyclone enables particularly high separation efficiency
  • Additional water intake on the cyclone collecting containers (optional)

COOLING EXHAUST CYCLONE
The G45 retro comes as standard with an additional cyclone for the cooling exhaust air. This additional exhaust air treatment keeps the amount of dust particles that enter the environment to a minimum.

ROASTING FAN
Even in the basic version, the G45 retro’s roasting fan is equipped with a frequency converter. In addition, it stands out due to its particularly high performance and can be connected to an exhaust air treatment system.

EQUIPMENT

GREEN COFFEE CONVEYOR
KIRSCH + MAUSSER green coffee conveyors make it extremely easy to feed green coffee into the G45 retro’s feed hopper.

AFTERBURNER
To further treat the visible exhaust gases released during roasting, the G45 retro can be equipped with an afterburner specially designed for this process.

DESTONER
KIRSCH + MAUSSER destoners reliably remove foreign objects with a higher specific weight than roasted coffee.