GabatarwaAna sanya kwalabe marasa komai da hannu a cikin kwandon, kuma ana ciyar da magungunan da ke cikin silo ta hanyar girgiza. Tsarin yana ba da magungunan zuwa ƙofar tashar dubawa daidai da tsari (ba tare da haɗuwa ba). Ta hanyar ganowa da ƙididdigewa na infrared photoelectric, an katange adadin adadin da aka saita ta hanyar ƙaramin tashar tashar kuma an ɗora shi a cikin kwalban.