I have a Geisen 15kg but it would operate a bit differently to others - there have been some changes I made to my roaster. Gas pressure and type of fuel are also a consideration as is the flue design for the exhaust, or if afterburners are used. Geisen, in my opinion, has a bad airflow design just like probats in that it becomes restricted as the chaff buildup occurs between the detailed cleaning events. Of course, Geisen would argue they have compensating pressure systems that help with that problem, but the fact is they don't work so well and the operator needs to be aware of these conditions over time. I don't roast anything below 10kg charge weight on my Geisen for different reasons, but other roasters may go down to 5kg. When you drop to low values of charge weight the dynamics of the design fundamentals of the roaster are at odds with the roast process, e.g. surface are conduction, airflow, air volume, bean agitation, etc. Are you roasting, or planning to roast on a Geisen 15kg in UAE ?
