Block ice makina amatanthauza makina opangidwa kuti apange midadada yayikulu ya ayezi. Makina otere nthawi zambiri amagwiritsidwa ntchito pazamalonda ndi mafakitale, monga m'mafakitale asodzi, opanga zakudya ndi zakumwa. Makina oundana oundana amatha kupanga midadada yayikulu ya ayezi kuti apereke zoyendera zozizira, zosungirako komanso zoziziritsa. Makinawa nthawi zambiri amagwiritsa ntchito condenser ndi kompresa kuti aziundana ndikuundana madzi, kupanga ayezi wolimba.
Makina oundana a Shanghai Jingyao ali ndi makina opangira anzeru, omwe ndi osavuta komanso osavuta kugwiritsa ntchito. Kupyolera mu mabatani owongolera pagawo la opareshoni, ogwiritsa ntchito amatha kukhazikitsa magawo monga nthawi yopangira ayezi, njira yopangira ayezi, ndi kukula kwa ayezi. Zidazi zilinso ndi chitetezo choteteza chitetezo chomwe chimatha kuyang'anira momwe zida zimagwirira ntchito ndikusiya kugwira ntchito kuti zitsimikizire kuti zikugwiritsidwa ntchito bwino.