The chiller of the glass tempering furnace consists of a roller table and two chillers. One chiller is on the top and the other one is at the bottom of bed. Once there is an explosion in the chiller, the glass debris could damage the aramid kevlar ropes over the roller table, affecting smooth transporting of glass to the unloading table, resulting in interruptions in the entire glass tempering process. Therefore, the regular inspection on the working condition of chiller and also the kevlar ropes on the rollers is very necessary for endure the good condition of the overall furnace.