Only when the glass tempering furnace has been completely cooled before you can change the ceramic rollers in the tempering furnace. While changing the ceramic rollers, engage at least three people (each on one side and one to two person(s) in the center). During the dismantling process, remove the fixed screws on the bearings first. Engage in joint efforts to lift up the ceramic rollers on the glass tempering machine and place them on the conveyor rack. Thereafter, pull out the ceramic rollers. It should be noted that the action should be light and slow while pulling out the ceramic rollers in the glass tempering furnace. Do not knock against or scratch the roller at any time.