Mai kula da zafin jiki na firij na gama gari ya ƙunshi bututu mai gano zafin jiki (kimanin 3mm a diamita), ƙwanƙwasa, da maɓalli. An haɗa bututun gano zafin jiki tare da bellow kuma an rufe shi, kuma an cika shi da matsakaicin yanayin zafin jiki (ruwa ko gas). Lokacin da zafin jiki ya tashi, matsakaicin matsakaicin zafin jiki a cikin ƙwanƙwasa yana faɗaɗa, yana tura ƙwanƙwasa don ƙarawa; lokacin da zafin jiki ya ragu, matsakaicin matsakaicin zafin jiki yana raguwa, ƙwanƙolin kuma yana raguwa. saman bellow yana turawa a kunna ko kashewa.
A zahirin amfani, ƙaramin ma'aunin zafi da sanyio yana haɗe a jere zuwa na'urar wutar lantarki ta firij. Lokacin da zafin jiki a cikin firiji ya tashi zuwa ƙimar da aka saita, ana kunna micro switch a cikin ma'aunin zafi da sanyio, kuma ana kunna ƙarfin kwampreso don fara sanyaya; lokacin da zafin jiki a cikin firiji ya faɗi zuwa ƙimar da aka saita, ana kashe micro switch. Hakanan an katse wutar lantarki na compressor don dakatar da firij...Zai ci gaba da zagayowar, kuma ana kiyaye zafin jiki a cikin firij a cikin ƙaramin yanki.
Alice ƙwararriyar masana'anta ce ta kayan kwalliyar kayan daki, za mu iya samar da gami da zinc, aluminum, jan karfe, tagulla, pvc, da sauransu.