Siv lub chiller nyob rau hauv ib qho chaw tsim nyog tuaj yeem txo cov nqi ua haujlwm, txhim kho kev ua haujlwm thiab ua kom ntev lub neej kev pabcuam laser. Thiab dab tsi yuav tsum tau them sai sai rau thaum siv cov dej chillers? Tsib lub ntsiab lus tseem ceeb: kev ua haujlwm ib puag ncig; kev xav tau dej zoo; muab qhov voltage thiab lub zog zaus; kev siv tub yees; kev saib xyuas tsis tu ncua.