Mwinamwake mwakhala mukugwiritsa ntchito firiji kwa zaka zambiri ndipo simukudziwa momwe mungagwiritsire ntchito bwino, lero mukhoza kuphunzira momwe mungagwiritsire ntchito firiji molondola kuchokera m'nkhaniyi yomwe ikuphatikiza malingaliro a akatswiri angapo.
1.Ngakhale mafiriji ambiri amakhala ndi mawonekedwe a kutentha, ndi bwino kusunga choyezera kutentha kwa digito kuti mudziwe bwino kutentha kwamkati.
2. Kutentha koyenera kwa chipinda chozizira cha firiji ndi 0-4 digiri Celsius. Kutentha kwambiri kungathe kukhala ndi mabakiteriya omwe amawononga chakudya, pamene kutentha kochepa kwambiri kungapangitse madzi a m'chakudya kuzizira.