Thaum xaiv ib qho dej chiller, nws yog ib qho tseem ceeb los xyuas kom meej tias lub peev xwm txias ntawm lub chiller ua raws li qhov yuav tsum tau ua kom txias txias ntawm cov khoom siv ua haujlwm. Tsis tas li ntawd, qhov ntsuas kub tswj kev ruaj ntseg ntawm lub chiller yuav tsum tau txiav txim siab, nrog rau qhov xav tau ntawm chav tsev sib xyaw. Koj yuav tsum tau them sai sai rau cov dej twj tso kua mis siab ntawm lub chiller.