When the wind deflector of the air distribution box of the glass tempering machine is in the middle position, the pointer of the indicator points to zero. When the wind deflector moves upward, the pointer points to positive values. When the wind deflector moves downward, the pointer points to negative values.
If the tempered glass bends upward, it indicates that the wind pressure on the upper part of the chiller in the tempering section is lower. You should adjust the wind deflector of the glass tempering furnace downward, making the pointer of the indicator on the furnace body toward negative values. On the contrary, if the tempered glass bends downward, adjust the wind deflector of the glass tempering furnace body upward, making the pointer of the indicator on the furnace body toward positive values.